Daikin | CDXS50CVMB | Service manual | Daikin CDXS50CVMB Service manual

SiEBE18-526
Service
Manual
D-Series
[Applied Models]
zSuper Multi Plus: Heat Pump
SiEBE18-526
SUPER MULTI PLUS
D-Series
zHeat Pump
Indoor Unit
FTXS20D(2)VMW(L)(9)
FTXS20DA(3)VMW(L)(7)
FTXS25D(2)VMW(L)(9)
FTXS25DA(3)VMW(L)(7)
FTXS35D(2)VMW(L)(9)
FTXS35DA(3)VMW(L)(7)
CTXS50D(2)VMW(L)
FTXS20CVMB(9)
FTXS20CAVMB
FTXS25CVMB(9)(8)
FTXS25CAVMB
FTXS35CVMB(9)(8)
FTXS35CAVMB
FTXS50BVMB
FTXS60BVMB
FTXS71BVMB
FDXS25CVMB
FDXS25CAVMB
FDXS35CVMB
FDXS35CAVMB
CDXS50CVMB
CDXS60CVMB
FLXS25BVMB
FLXS25BAVMB
FLXS35BVMB
FLXS35BAVMB
FLXS50BVMB
FLXS50BAVMB
FLXS60BVMB
FLXS60BAVMB
FVXS25BVMB
FVXS25BAVMB
FVXS35BVMB
FVXS35BAVMB
FVXS50BVMB
FVXS50BAVMB
FFQ25B7V1B
FFQ35B7V1B
FFQ50B7V1B
FFQ60B7V1B
FHQ35BUV1B9
FHQ50BUV1B9
FHQ60BUV1B9
Outdoor Unit
RMXS112D7V3B
RMXS140D7V3B
RMXS160D7V3B
Table of Contents
BPMKS967A2B
BPMKS967B2B
BPMKS967A3B
BPMKS967B3B
i
SiEBE18-526
1. Introduction ........................................................................................... vii
1.1 Safety Cautions ...................................................................................... vii
Part 1 List of Functions ................................................................ 1
1. List of Functions ......................................................................................2
Part 2 Specifications .................................................................... 7
1. Specifications ..........................................................................................8
1.1 Outdoor Units ...........................................................................................8
1.2 BP Unit .....................................................................................................9
1.3 Indoor Units ............................................................................................10
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 19
1. Printed Circuit Board Connector Wiring Diagram..................................20
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
Outdoor Unit RMXS 112/140/160 D7V3B ..............................................20
Branch Provider Unit BPMKS967A2B, B2B, A3B, B3B .........................24
Wall Mounted Type 20/25/35/50 Class - D Series .................................25
Wall Mounted Type 20/25/35 Class - C Series ......................................27
Wall Mounted Type 50/60/71 Class - B Series.......................................29
Duct Connected Type.............................................................................31
Floor / Ceiling Suspended Dual Type.....................................................32
Floor Standing Type ...............................................................................35
Ceiling Mounted Cassette 600×600 Type ..............................................38
Ceiling Suspended Type ........................................................................40
Part 4 Refrigerant Circuit ........................................................... 43
1. Refrigerant Circuit .................................................................................44
1.1 RMXS 112/140/160 D7V3B....................................................................44
1.2 BPMKS 967 A2B, B2B, A3B, B3B..........................................................46
2. Functional Parts Layout ........................................................................47
2.1 RMXS 112/140/160 D7V3B....................................................................47
3. Refrigerant Flow for Each Operation Mode...........................................48
3.1
3.2
3.3
3.4
Cooling Operation ..................................................................................48
Heating Operation ..................................................................................49
Cooling Oil Return Operation .................................................................50
Heating Oil Return Operation & Defrost Operation ................................51
Part 5 Function............................................................................ 53
1. Operation Mode ....................................................................................54
2. Basic Control.........................................................................................55
2.1
2.2
2.3
2.4
Normal Operation ...................................................................................55
Compressor PI Control...........................................................................56
Electronic Expansion Valve PI Control...................................................59
Cooling Operation Fan Control...............................................................60
3. Special Control......................................................................................61
3.1 Startup Control .......................................................................................61
3.2 Oil Return Operation ..............................................................................62
3.3 Defrosting Operation ..............................................................................64
ii
Table of Contents
SiEBE18-526
3.4
3.5
3.6
3.7
Pump-down Residual Operation ............................................................65
Restart Standby......................................................................................65
Stopping Operation ................................................................................66
Pressure Equalization Prior to Startup ...................................................66
4. Protection Control .................................................................................67
4.1
4.2
4.3
4.4
4.5
4.6
High Pressure Protection Control...........................................................67
Low Pressure Protection Control............................................................69
Discharge Pipe Protection Control .........................................................70
Inverter Protection Control .....................................................................71
Freeze-up Protection Control .................................................................72
Dew Condensation Prevention Control ..................................................73
5. Other Control.........................................................................................74
5.1 Demand Operation .................................................................................74
5.2 Heating Operation Prohibition ................................................................74
6. BP Unit Control .....................................................................................75
6.1
6.2
6.3
6.4
6.5
BP Unit Command Conversion ..............................................................75
BP Unit Electronic Expansion Valve Control ..........................................76
SH Control in Cooling Operation ............................................................78
SC Control in Heating Operation............................................................79
Heat Exchanger Isothermal Control in Heating Operation .....................79
7. Indoor Unit (RA Models)........................................................................80
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..........80
Fan Speed Control for Indoor Units........................................................81
Programme Dry Function .......................................................................82
Automatic Operation...............................................................................83
Thermostat Control.................................................................................84
Night Set Mode.......................................................................................85
ECONO Mode ........................................................................................86
INTELLIGENT EYE ................................................................................87
HOME LEAVE Operation .......................................................................89
Inverter POWERFUL Operation .............................................................90
Other Functions......................................................................................91
8. Indoor Unit (SkyAir Models) ..................................................................93
8.1 Function Outline .....................................................................................93
8.2 Electric Function Parts ...........................................................................94
8.3 Function Details......................................................................................95
Part 6 Test Operation ............................................................... 105
1. Test Operation ....................................................................................106
1.1 Procedure and Outline .........................................................................106
2. Outdoor Unit PCB Layout....................................................................111
3. Field Setting ........................................................................................112
3.1 Field Setting from Outdoor Unit............................................................112
3.2 Detail of Setting Mode ..........................................................................118
4. Field Setting for SkyAir Indoor Unit .....................................................128
4.1
4.2
4.3
4.4
4.5
4.6
Table of Contents
Explanation...........................................................................................128
Field Setting .........................................................................................129
Initial Setting Contents .........................................................................130
Local Setting Mode Number.................................................................131
Detailed Explanation of Setting Modes ................................................132
Centralized Group No. Setting .............................................................136
iii
SiEBE18-526
4.7 Maintenance Mode Setting...................................................................137
5. Test Operation and Field Setting for RA Indoor Unit...........................138
5.1 Test Operation from the Remote Controller .........................................138
5.2 Jumper Settings ...................................................................................139
Part 7 System Configuration..................................................... 141
1. System Configuration..........................................................................142
1.1 Operation Instructions ..........................................................................142
2. Instruction............................................................................................143
2.1
2.2
2.3
2.4
RMXS Series........................................................................................143
Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type .....................144
Ceiling Mounted Cassette Type ...........................................................216
Ceiling Suspended Type ......................................................................227
Part 8 Troubleshooting ............................................................. 239
1. Caution for Diagnosis..........................................................................241
1.1
1.2
1.3
1.4
Troubleshooting with the Operation Lamp (RA Indoor Unit) ................241
Troubleshooting with the LED on the SkyAir Indoor Unit .....................242
Troubleshooting with the LED on the Outdoor Unit..............................243
Troubleshooting with the LED on the BP Unit ......................................244
2. Service Check Function ......................................................................245
2.1
2.2
2.3
2.4
2.5
2.6
RA Indoor Unit Wireless Remote Controller.........................................245
SkyAir Indoor Unit INSPECTION/TEST Button....................................248
SkyAir Indoor Unit Wired Remote Controller........................................249
SkyAir Indoor Unit Wireless Remote Controller ...................................250
Sky Air Indoor Unit Error Codes and LED Indication............................252
Malfunction Code Indication by Outdoor Unit PCB ..............................253
3. List of Malfunction Code......................................................................255
4. Troubleshooting for RA Indoor Unit.....................................................257
4.1
4.2
4.3
4.4
4.5
4.6
Indoor Unit PCB Abnormality ...............................................................257
Freeze-up Protection Control or High Pressure Control.......................258
Fan Motor or Related Abnormality .......................................................260
Thermistor or Related Abnormality (Indoor Unit)..................................263
Shutter Drive Motor / Shutter Limit Switch Abnormality .......................264
Check ...................................................................................................265
5. Troubleshooting for SkyAir Indoor Unit ...............................................268
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
5.12
5.13
5.14
iv
Indoor Unit PCB Abnormality ...............................................................268
Malfunction of Drain Water Level System (Float Type)........................269
Malfunction of Drain System ................................................................271
Indoor Unit Fan Motor Lock..................................................................272
Malfunction of Indoor Unit Fan Motor ...................................................273
Swing Flap Motor Malfunction / Lock ...................................................275
Malfunction of Capacity Setting............................................................277
Malfunction of Heat Exchanger Thermistor (R2T)................................278
Malfunction of Heat Exchanger Thermistor (R3T)................................279
Malfunction of Suction Air Thermistor ..................................................280
Malfunction of Remote Controller Thermistor.......................................281
Transmission Error (between Indoor Unit and Remote Controller) ......282
Transmission Error (between Main and Sub Remote Controller).........283
Malfunction of Field Setting Switch ......................................................284
Table of Contents
SiEBE18-526
5.15 Check ...................................................................................................285
6. Troubleshooting for BP Unit ................................................................287
6.1
6.2
6.3
6.4
6.5
6.6
Malfunction of Electronic Expansion Valve ..........................................287
Faulty BP Unit PCB ..............................................................................288
Faulty BP Liquid or Gas Pipe Thermistor .............................................289
Transmission Error between Indoor Unit and BP Unit..........................290
Transmission Error between Outdoor Unit and BP Unit.......................292
Check ...................................................................................................293
7. Troubleshooting for Outdoor Unit........................................................294
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.18
7.19
7.20
7.21
7.22
7.23
7.24
7.25
7.26
7.27
7.28
Faulty Outdoor Unit PCB......................................................................294
Actuation of High Pressure Switch .......................................................295
Actuation of Low Pressure Switch........................................................296
Compressor Motor Lock .......................................................................297
Malfunction of Outdoor Unit Fan Motor ................................................298
Malfunction of Moving Part of Electronic Expansion Valve ..................299
Abnormal Discharge Pipe Temperature ...............................................300
Malfunction of Thermistor for Outdoor Air (R1T) ..................................301
Malfunction of Discharge Pipe Thermistor (R3T) .................................302
Malfunction of Thermistor (R2T) for Suction Pipe ................................303
Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger .....304
Malfunction of Receiver Gas Pipe Thermistor (R5T)............................305
Outdoor Unit: Malfunction of High Pressure Sensor ............................306
Malfunction of Low Pressure Sensor....................................................307
Malfunction of Inverter Radiating Fin Temperature Rise......................308
Inverter Compressor Abnormal ............................................................309
Inverter Current Abnormal....................................................................310
Inverter Start up Error...........................................................................311
Malfunction of Transmission between Inverter and Control PCB.........312
Malfunction of Inverter Radiating Fin Temperature Rise Sensor .........314
Faulty Combination of Inverter and Fan Driver ....................................315
Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................316
Power Supply Insufficient or Instantaneous Failure .............................317
Check Operation not Executed ............................................................319
Malfunction in other Indoor Unit or other BP Unit.................................320
Mismatching of Indoor Unit, BP Unit and Outdoor Unit ........................321
Refrigerant System not Set, Incompatible Wiring/Piping......................322
Malfunction of System, Refrigerant System Address Undefined..........323
8. Check ..................................................................................................324
9. Thermistor Resistance / Temperature Characteristics........................326
10.Pressure Sensor .................................................................................328
Part 9 Removal Procedure ........................................................ 329
1. Outdoor Unit........................................................................................330
1.1
1.2
1.3
1.4
1.5
Removal of Outer Panels .....................................................................330
Removal of PCB...................................................................................337
Removal of Solenoid Valve, Four Way Valve and Motorized Valve.....348
Removal of Thermistor Assembly ........................................................349
Removal of Fan Motor..........................................................................350
2. BP Unit ................................................................................................353
2.1 Removal of PCB...................................................................................353
Table of Contents
v
SiEBE18-526
2.2 Removal of Solenoid Valve Coil ...........................................................356
Part 10 Appendix......................................................................... 359
1. Piping Diagrams..................................................................................360
1.1 Outdoor Units .......................................................................................360
1.2 BP Units ...............................................................................................361
1.3 Indoor Units ..........................................................................................362
2. Wiring Diagrams..................................................................................367
2.1 Outdoor Units .......................................................................................367
2.2 BP Units ...............................................................................................368
2.3 Indoor Units ..........................................................................................369
vi
Table of Contents
SiEBE18-526
Introduction
1. Introduction
1.1
Safety Cautions
Cautions and
Warnings
„ Be sure to read the following safety cautions before conducting repair work.
„ The caution items are classified into “
Warning” and “
Caution”. The “
Warning”
items are especially important since they can lead to death or serious injury if they are not
followed closely. The “
Caution” items can also lead to serious accidents under some
conditions if they are not followed. Therefore, be sure to observe all the safety caution items
described below.
„ About the pictograms
This symbol indicates an item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates a prohibited action.
The prohibited item or action is shown inside or near the symbol.
This symbol indicates an action that must be taken, or an instruction.
The instruction is shown inside or near the symbol.
„ After the repair work is complete, be sure to conduct a test operation to ensure that the
equipment operates normally, and explain the cautions for operating the product to the
customer.
1.1.1 Caution in Repair
Warning
Be sure to disconnect the power cable plug from the plug socket before
disassembling the equipment for a repair.
Working on the equipment that is connected to a power supply can cause an
electrical shook.
If it is necessary to supply power to the equipment to conduct the repair or
inspecting the circuits, do not touch any electrically charged sections of the
equipment.
If the refrigerant gas discharges during the repair work, do not touch the
discharging refrigerant gas.
The refrigerant gas can cause frostbite.
When disconnecting the suction or discharge pipe of the compressor at the
welded section, release the refrigerant gas completely at a well-ventilated
place first.
If there is a gas remaining inside the compressor, the refrigerant gas or
refrigerating machine oil discharges when the pipe is disconnected, and it can
cause injury.
If the refrigerant gas leaks during the repair work, ventilate the area. The
refrigerant gas can generate toxic gases when it contacts flames.
The step-up capacitor supplies high-voltage electricity to the electrical
components of the outdoor unit.
Be sure to discharge the capacitor completely before conducting repair work.
A charged capacitor can cause an electrical shock.
Do not start or stop the air conditioner operation by plugging or unplugging the
power cable plug.
Plugging or unplugging the power cable plug to operate the equipment can
cause an electrical shock or fire.
vii
Introduction
SiEBE18-526
Caution
Do not repair the electrical components with wet hands.
Working on the equipment with wet hands can cause an electrical shock.
Do not clean the air conditioner by splashing water.
Washing the unit with water can cause an electrical shock.
Be sure to provide the grounding when repairing the equipment in a humid or
wet place, to avoid electrical shocks.
Be sure to turn off the power switch and unplug the power cable when cleaning
the equipment.
The internal fan rotates at a high speed, and cause injury.
Do not tilt the unit when removing it.
The water inside the unit can spill and wet the furniture and floor.
Be sure to check that the refrigerating cycle section has cooled down
sufficiently before conducting repair work.
Working on the unit when the refrigerating cycle section is hot can cause burns.
Use the welder in a well-ventilated place.
Using the welder in an enclosed room can cause oxygen deficiency.
1.1.2 Cautions Regarding Products after Repair
Warning
Be sure to use parts listed in the service parts list of the applicable model and
appropriate tools to conduct repair work. Never attempt to modify the
equipment.
The use of inappropriate parts or tools can cause an electrical shock,
excessive heat generation or fire.
When relocating the equipment, make sure that the new installation site has
sufficient strength to withstand the weight of the equipment.
If the installation site does not have sufficient strength and if the installation
work is not conducted securely, the equipment can fall and cause injury.
Be sure to install the product correctly by using the provided standard
installation frame.
Incorrect use of the installation frame and improper installation can cause the
equipment to fall, resulting in injury.
Be sure to install the product securely in the installation frame mounted on a
window frame.
If the unit is not securely mounted, it can fall and cause injury.
viii
For integral units
only
For integral units
only
SiEBE18-526
Introduction
Warning
Be sure to use an exclusive power circuit for the equipment, and follow the
technical standards related to the electrical equipment, the internal wiring
regulations and the instruction manual for installation when conducting
electrical work.
Insufficient power circuit capacity and improper electrical work can cause an
electrical shock or fire.
Be sure to use the specified cable to connect between the indoor and outdoor
units. Make the connections securely and route the cable properly so that there
is no force pulling the cable at the connection terminals.
Improper connections can cause excessive heat generation or fire.
When connecting the cable between the indoor and outdoor units, make sure
that the terminal cover does not lift off or dismount because of the cable.
If the cover is not mounted properly, the terminal connection section can cause
an electrical shock, excessive heat generation or fire.
Do not damage or modify the power cable.
Damaged or modified power cable can cause an electrical shock or fire.
Placing heavy items on the power cable, and heating or pulling the power cable
can damage the cable.
Do not mix air or gas other than the specified refrigerant (R410A ) in the
refrigerant system.
If air enters the refrigerating system, an excessively high pressure results,
causing equipment damage and injury.
If the refrigerant gas leaks, be sure to locate the leak and repair it before
charging the refrigerant. After charging refrigerant, make sure that there is no
refrigerant leak.
If the leak cannot be located and the repair work must be stopped, be sure to
perform pump-down and close the service valve, to prevent the refrigerant gas
from leaking into the room. The refrigerant gas itself is harmless, but it can
generate toxic gases when it contacts flames, such as fan and other heaters,
stoves and ranges.
When replacing the coin battery in the remote controller, be sure to disposed
of the old battery to prevent children from swallowing it.
If a child swallows the coin battery, see a doctor immediately.
Caution
Installation of a leakage breaker is necessary in some cases depending on the
conditions of the installation site, to prevent electrical shocks.
Do not install the equipment in a place where there is a possibility of
combustible gas leaks.
If a combustible gas leaks and remains around the unit, it can cause a fire.
Be sure to install the packing and seal on the installation frame properly.
For integral units
If the packing and seal are not installed properly, water can enter the room and only
wet the furniture and floor.
1.1.3 Inspection after Repair
Warning
Check to make sure that the power cable plug is not dirty or loose, then insert
the plug into a power outlet all the way.
If the plug has dust or loose connection, it can cause an electrical shock or fire.
If the power cable and lead wires have scratches or deteriorated, be sure to
replace them.
Damaged cable and wires can cause an electrical shock, excessive heat
generation or fire.
ix
Introduction
SiEBE18-526
Warning
Do not use a joined power cable or extension cable, or share the same power
outlet with other electrical appliances, since it can cause an electrical shock,
excessive heat generation or fire.
Caution
Check to see if the parts and wires are mounted and connected properly, and
if the connections at the soldered or crimped terminals are secure.
Improper installation and connections can cause excessive heat generation,
fire or an electrical shock.
If the installation platform or frame has corroded, replace it.
Corroded installation platform or frame can cause the unit to fall, resulting in
injury.
Check the grounding, and repair it if the equipment is not properly grounded.
Improper grounding can cause an electrical shock.
Be sure to measure the insulation resistance after the repair, and make sure
that the resistance is 1 Mohm or higher.
Faulty insulation can cause an electrical shock.
Be sure to check the drainage of the indoor unit after the repair.
Faulty drainage can cause the water to enter the room and wet the furniture
and floor.
1.1.4 Using Icons
Icons are used to attract the attention of the reader to specific information. The meaning of each
icon is described in the table below:
1.1.5 Using Icons List
Icon
Type of
Information
Note
Description
A “note” provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
Note:
Caution
A “caution” is used when there is danger that the reader, through
incorrect manipulation, may damage equipment, loose data, get
an unexpected result or has to restart (part of) a procedure.
Warning
A “warning” is used when there is danger of personal injury.
Reference
A “reference” guides the reader to other places in this binder or
in this manual, where he/she will find additional information on a
specific topic.
Caution
Warning
x
SiEBE18-526
Part 1
List of Functions
1. List of Functions ......................................................................................2
List of Functions
1
List of Functions
SiEBE18-526
Basic Function
Functions
Inverter (with Inverter Power Control)
{
Operation Limit for Cooling (°CDB)
–5
~
46
Operation Limit for Heating (°CWB)
–15
~
15.5
PAM Control
Compressor
Comfortable
Airflow
Comfort Control
Operation
Lifestyle
Convenience
Category
Health & Clean
—
RMXS112·140·160D7V3B
Category
RMXS112·140·160D7V3B
1. List of Functions
Functions
Air Purifying Filter with Bacteriostatic &
Virustatic Functions
—
Photocatalytic Deodorizing Filter
—
Air Purifying Filter with Photocatalytic
Deodorizing Function
—
Titanium Apatite Photocatalytic
Deodorizing Function
—
Oval Scroll Compressor
{
Longlife Filter (Option)
—
Swing Compressor
—
Mould Proof Air Filter
—
Rotary Compressor
—
Wipe-clean Flat Panel
—
Reluctance DC Motor
{
Washable Grille
—
Power-Airflow Flap
—
Filter Cleaning Indicator
—
Power-Airflow Dual Flaps
—
Mold Proof Operation
—
Power-Airflow Diffuser
—
Heating Dry Operation
—
Wide-Angle Louvers
—
Good-Sleep Cooling Operation
—
Vertical Auto-Swing (Up and Down)
—
Horizontal Auto-Swing (Right and Left)
—
3-D Airflow
—
Comfort Airflow Mode
—
3-Step Airflow (H/P Only)
—
Self-Diagnosis (Digital, LED) Display
{
Auto Fan Speed
—
Wiring-Error Check
—
Indoor Unit Silent Operation
—
Anticorrosion Treatment of Outdoor Heat
Exchanger
{
Night Quiet Mode (Automatic)
{
Multi-Split / Split Type Compatible Indoor
Unit
—
Timer
Worry Free
“Reliability &
Durability”
Flexibility
24-Hour On/Off Timer
—
72-Hour On/Off Timer
—
Night Set Mode
—
Auto-Restart (after Power Failure)
—
Outdoor Unit Silent Operation (Manual)
{
Flexible Voltage Correspondence
—
Intelligent Eye
—
High Ceiling Application
—
Quick Warming Function
{
Chargeless
—
Hot-Start Function
—
Either Side Drain (Right or Left)
—
Automatic Defrosting
{
Automatic Operation
—
Remote Control
Power-Selection
—
5-Rooms Centralized Controller (Option)
—
—
Programme Dry Function
—
Remote Control Adaptor
(Normal Open-Pulse Contact)(Option)
Fan Only
—
Remote Control Adaptor
(Normal Open Contact)(Option)
—
New Powerful Operation
(Non-Inverter)
—
Dlll-NET Compatible (Adaptor)(Option)
—
Inverter Powerful Operation
—
Priority-Room Setting
—
Cooling / Heating Mode Lock
{
Home Leave Operation
—
ECONO Mode
—
Indoor Unit On/Off Switch
—
Signal Reception Indicator
—
Temperature Display
—
Another Room Operation
—
Remote
Controller
Wireless
—
Wired
—
Note: { : Holding Functions
— : No Functions
2
List of Functions
List of Functions
CTXS50D(2)VMW(L)
FTXS20-35C(A)VMB(9)(8)
{
{
{
—
—
—
Air Purifying Filter with Bacteriostatic,
Virustatic Functions
—
—
—
Operation Limit for Heating (°CWB)
—
—
—
Photocatalytic Deodorizing Filter
—
—
—
—
Air Purifying Filter with Photocatalytic
Deodorizing Function
—
—
{
Titanium Apatite Photocatalytic
Air-Purifying Filter
{
{
—
Long life Filter (Option)
—
—
—
Mold Proof Air Filter
{
{
{
PAM Control
Compressor
Comfortable
Airflow
Comfort
Control
Operation
FTXS20-35C(A)VMB(9)(8)
FTXS20-35D(2)VMW(L)(9)
FTXS20-35DA(3)VMW(L)(7)
Basic
Function
Inverter (with Inverter Power Control)
Operation Limit for Cooling (°CDB)
Functions
CTXS50D(2)VMW(L)
Category
FTXS20-35D(2)VMW(L)(9)
FTXS20-35DA(3)VMW(L)(7)
SiEBE18-526
—
—
Oval Scroll Compressor
—
—
—
Swing Compressor
—
—
—
Category
— Health &
Clean
Functions
Rotary Compressor
—
—
Reluctance DC Motor
—
—
—
Power-Airflow Flap
—
—
—
Wipe-clean Flat Panel
{
{
{
Power-Airflow Dual Flaps
{
{
{
Washable Grille
—
—
—
Power-Airflow Diffuser
—
—
—
Filter Cleaning Indicator
—
—
—
Wide-Angle Louvers
{
{
{
Mold Proof Operation
—
—
—
Vertical Auto-Swing (Up and Down)
{
{
{
Heating Dry Operation
—
—
—
Horizontal Auto-Swing (Right and Left)
—
—
—
Good-Sleep Cooling Operation
—
—
—
3-D Airflow
—
—
—
24-Hour On/Off Timer
{
{
{
Comfort Airflow Mode
{
{
— Timer
72-Hour On/Off Timer
—
—
—
3-Step Airflow (H/P Only)
—
—
—
Night Set Mode
{
{
{
Auto Fan Speed
{
{
{
Auto-Restart (after Power Failure)
{
{
{
Self-Diagnosis (Digital, LED) Display
{
{
{
Wiring Error Check
—
—
—
Anticorrosion Treatment of Outdoor
Heat Exchanger
—
—
—
Multi-Split / Split Type Compatible
Indoor Unit
{
—
{
Indoor Unit Silent Operation
{
{
Night Quiet Mode (Automatic)
—
—
{
H
H
H
Outdoor Unit Silent Operation (Manual)
—
—
Worry Free
“Reliability &
— Durability”
—
Intelligent Eye
{
{
{
Quick Warming Function
—
—
—
Hot-Start Function
{
{
{
Automatic Defrosting
—
—
—
Flexible Voltage Correspondence
{
{
{
Automatic Operation
{
{
{
High Ceiling Application
—
—
—
Programme Dry Function
{
{
{
Chargeless
—
—
—
Fan Only
{
{
{
Either Side Drain (Right or Left)
{
{
{
New Powerful Operation (NonInverter)
—
—
—
Power Selection
—
—
—
Inverter Powerful Operation
{
{
{
5-Rooms Centralized Controller
(Option)
{
{
{
Priority-Room Setting
—
—
—
Cooling / Heating Mode Lock
—
—
Remote Control Adaptor
(Normal Open-Pulse Contact)(Option)
{
{
{
—
—
— Remote
{ Control
{
{
—
Remote Control Adaptor
(Normal Open Contact)(Option)
{
{
{
{
{
{
DIII-NET Compatible (Adaptor)
(Option)
{
{
{
Wireless
{
{
{
Wired
—
—
—
Lifestyle
Home Leave Operation
Convenience
ECONO Mode
Indoor Unit On/Off Switch
Flexibility
Signal Reception Indicator
{
{
Temperature Display
—
—
{ Remote
— Controller
Another Room Operation
—
—
—
Note: { : Holding Functions
— : No Functions
List of Functions
H : Digital Only
3
List of Functions
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
CDXS50·60CVMB
{
{
Operation Limit for Cooling (°CDB)
—
—
Operation Limit for Heating (°CWB)
—
PAM Control
—
Air Purifying Filter with Bacteriostatic &
Virustatic Functions
—
—
—
—
Photocatalytic Deodorizing Filter
—
—
—
—
—
Air Purifying Filter with Photocatalytic
Deodorizing Function
{
—
—
—
—
Titanium Apatite Photocatalytic
Air-Purifying Filter
—
—
—
—
Category
Health &
Clean
Functions
Oval Scroll Compressor
—
—
—
Long life Filter (Option)
—
—
Swing Compressor
—
—
—
Mold Proof Air Filter
{
{
{
Rotary Compressor
—
—
—
Wipe-clean Flat Panel
{
—
—
—
Reluctance DC Motor
—
—
—
Washable Grille
—
—
Power-Airflow Flap
—
—
—
Filter Cleaning Indicator
—
—
—
Power-Airflow Dual Flaps
{
—
—
Mold Proof Operation
—
—
—
Power-Airflow Diffuser
—
—
—
Heating Dry Operation
—
—
—
Wide-Angle Louvers
{
—
—
Good-Sleep Cooling Operation
—
—
—
Vertical Auto-Swing (Up and Down)
{
—
— Timer
24-Hour On/Off Timer
{
{
{
Horizontal Auto-Swing (Right and Left) {
—
—
72-Hour On/Off Timer
—
—
—
3-D Airflow
{
—
—
Night Set Mode
{
{
{
Comfort Airflow Mode
—
—
Auto-Restart (after Power Failure)
{
{
{
3-Step Airflow (H/P Only)
—
—
— Worry Free
“Reliability &
— Durability”
Self-Diagnosis (Digital, LED) Display
{
{
{
Auto Fan Speed
{
{
{
Wiring-Error Check
—
—
—
Indoor Unit Silent Operation
{
{
{
Anticorrosion Treatment of Outdoor
Heat Exchanger
—
—
—
Night Quiet Mode (Automatic)
—
—
—
Multi-Split / Split Type Compatible
Indoor Unit
{
{
—
Outdoor Unit Silent Operation
(Manual)
—
—
—
Flexible Voltage Correspondence
{
{
{
Flexibility
H
H
H
Intelligent Eye
{
—
—
High Ceiling Application
—
—
—
Quick Warming Function
—
—
—
Chargeless
—
—
—
Hot-Start Function
{
{
{
Either Side Drain (Right or Left)
{
—
—
Automatic Defrosting
—
—
—
Power-Selection
—
—
—
Automatic Operation
{
{
{
5-Rooms Centralized Controller
(Option)
{
{
{
Programme Dry Function
{
{
{
Remote Control Adaptor
(Normal Open-Pulse Contact)(Option)
{
{
{
Fan Only
{
{
{
Remote Control Adaptor
(Normal Open Contact)(Option)
{
{
{
New Powerful Operation
(Non-Inverter)
—
—
—
DIII-NET Compatible (Adaptor)
(Option)
{
{
{
Inverter Powerful Operation
{
{
{
Priority-Room Setting
—
—
—
Cooling / Heating Mode Lock
—
—
—
Home Leave Operation
{
{
{
ECONO Mode
—
—
—
Indoor Unit On/Off Switch
{
{
{
Signal Reception Indicator
{
{
{
Temperature Display
—
—
—
Another Room Operation
—
—
—
Note: { : Holding Functions
— : No Functions
4
CDXS50·60CVMB
Compressor
FDXS25·35C(A)VMB
FDXS25·35C(A)VMB
{
Functions
FTXS50-71BVMB
FTXS50-71BVMB
Inverter (with Inverter Power Control)
Category
Basic
Function
SiEBE18-526
Remote
Control
Remote
Controller
Wireless
{
{
{
Wired
—
—
—
H : Digital Only
List of Functions
List of Functions
Basic Function
{
{
Operation Limit for Cooling (°CDB)
—
—
Photocatalytic Deodorizing Filter
{
{
—
—
Compressor
Comfortable
Airflow
Functions
Air Purifying Filter with Bacteriostatic &
Virustatic Functions
{
{
—
—
PAM Control
—
—
Titanium Apatite Photocatalytic
Air-Purifying Filter
—
—
—
Oval Scroll Compressor
—
—
Long life Filter (Option)
—
Swing Compressor
—
—
Mold Proof Air Filter
{
{
Rotary Compressor
—
—
Wipe-clean Flat Panel
—
—
Reluctance DC Motor
—
—
Washable Grille
—
{
Power-Airflow Flap
—
—
Filter Cleaning Indicator
—
—
Power-Airflow Dual Flaps
—
—
Mold Proof Operation
—
—
Power-Airflow Diffuser
—
—
Heating Dry Operation
—
—
Wide-Angle Louvers
—
{
Good-Sleep Cooling Operation
—
—
Vertical Auto-Swing (Up and Down)
{
{
24-Hour On/Off Timer
{
{
Horizontal Auto-Swing (Right and Left)
—
—
72-Hour On/Off Timer
—
—
3-D Airflow
—
—
Night Set Mode
{
{
Comfort Airflow Mode
—
—
Auto-Restart (after Power Failure)
{
{
Self-Diagnosis (Digital, LED) Display
{
H1
{
H1
Timer
Worry Free
“Reliability &
Durability”
—
{
{
{
Wiring-Error Check
—
—
Anticorrosion Treatment of Outdoor
Heat Exchanger
—
—
Multi-Split / Split Type Compatible
Indoor Unit
{
{
Flexible Voltage Correspondence
{
{
Indoor Unit Silent Operation
{
{
Night Quiet Mode (Automatic)
—
—
Outdoor Unit Silent Operation
(Manual)
—
—
Flexibility
Intelligent Eye
—
—
High Ceiling Application
—
—
Quick Warming Function
—
—
Chargeless
—
—
Hot-Start Function
{
{
Either Side Drain (Right or Left)
—
—
Automatic Defrosting
—
—
Power-Selection
—
—
Automatic Operation
{
{
5-Rooms Centralized Controller
(Option)
{
{
Programme Dry Function
{
{
Remote Control Adaptor
(Normal Open-Pulse Contact)(Option)
{
{
Fan Only
{
{
Remote Control Adaptor
(Normal Open Contact)(Option)
{
{
New Powerful Operation
(Non-Inverter)
—
—
DIII-NET Compatible
(Adaptor)(Option)
{
{
Inverter Powerful Operation
{
{
Priority-Room Setting
—
—
Cooling / Heating Mode Lock
—
—
Home Leave Operation
{
{
ECONO Mode
—
—
Indoor Unit On/Off Switch
{
{
Signal Reception Indicator
{
{
Temperature Display
—
—
Another Room Operation
—
—
Note: { : Holding Functions
— : No Functions
List of Functions
Health & Clean
Operation Limit for Heating (°CWB)
Comfort Control Auto Fan Speed
Lifestyle
Convenience
Functions
Air Purifying Filter with Photocatalytic
Deodorizing Function
3-Step Airflow (H/P Only)
Operation
Category
FVXS25-50B(A)VMB
FVXS25-50B(A)VMB
Inverter (with Inverter Power Control)
Category
FLXS25-60B(A)VMB
FLXS25-60B(A)VMB
SiEBE18-526
Remote Control
Remote
Controller
Wireless
{
{
Wired
—
—
H1 : Digital Only
5
List of Functions
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
{
Operation Limit for Cooling (°CDB)
—
—
Photocatalytic Deodorizing Filter
Air Purifying Filter with Bacteriostatic &
Virustatic Functions
—
—
—
—
—
—
Category
Health &
Clean
Operation Limit for Heating (°CWB)
—
—
Air Purifying Filter with Photocatalytic
Deodorizing Function
PAM Control
—
—
Titanium Apatite Photocatalytic
Deodorizing Function
—
—
Oval Scroll Compressor
—
—
Longlife Filter (Option)
{
{
Swing Compressor
—
—
Mold Proof Air Filter
{
{
Rotary Compressor
—
—
Wipe-clean Flat Panel
—
—
{
Reluctance DC Motor
—
—
Washable Grille
{
Power-Airflow Flap
—
—
Filter Cleaning Indicator
{
{
Power-Airflow Dual Flaps
—
—
Mold Proof Operation
—
—
Power-Airflow Diffuser
—
—
Heating Dry Operation
—
—
Wide-Angle Louvers
—
—
Good-Sleep Cooling Operation
—
—
Vertical Auto-Swing (Up and Down)
{
{
24-Hour On/Off Timer
—
—
Horizontal Auto-Swing (Right and Left)
—
—
72-Hour On/Off Timer
{
{
3-D Airflow
—
—
Night Set Mode
—
—
Comfort Airflow Mode
—
—
Auto-Restart (after Power Failure)
{
{
Self-Diagnosis (Digital, LED) Display
{
H
{
H
Timer
Worry Free
“Reliability &
Durability”
3-Step Airflow (H/P Only)
—
—
Auto Fan Speed
—
—
Wiring-Error Check
—
—
Anticorrosion Treatment of Outdoor
Heat Exchanger
—
—
Multi-Split / Split Type Compatible
Indoor Unit
{
{
—
—
Indoor Unit Silent Operation
—
—
Night Quiet Mode (Automatic)
—
—
Outdoor Unit Silent Operation
(Manual)
—
—
Flexible Voltage Correspondence
Intelligent Eye
—
—
High Ceiling Application
—
{
Quick Warming Function
—
—
Chargeless
—
—
Flexibility
Hot-Start Function
{
{
Either Side Drain (Right or Left)
—
—
Automatic Defrosting
—
—
Power-Selection
—
—
Automatic Operation
{
{
5-Rooms Centralized Controller
(Option)
—
—
Programme Dry Function
{
{
Remote Control Adaptor
(Normal Open-Pulse Contact)(Option)
—
—
Fan Only
{
{
Remote Control Adaptor
(Normal Open Contact)(Option)
—
—
New Powerful Operation
(Non-Inverter)
—
—
Dlll-NET Compatible (Adaptor)(Option)
{
{
Wireless
{
{
Wired
{
{
Inverter Powerful Operation
—
—
Priority-Room Setting
—
—
Cooling / Heating Mode Lock
—
—
Home Leave Operation
—
—
ECONO Mode
—
—
Indoor Unit On/Off Switch
—
—
Signal Reception Indicator
—
—
Temperature Display
—
—
Another Room Operation
—
—
Note: { : Holding Functions
— : No Functions
6
Functions
FHQ35-60BUV1B9
FHQ35-60BUV1B9
{
Functions
FFQ25-60B7V1B
FFQ25-60B7V1B
Inverter (with Inverter Power Control)
Category
Basic
Function
SiEBE18-526
Remote
Control
Remote
Controller
H : Digital Only
List of Functions
SiEBE18-526
Part 2
Specifications
1. Specifications ..........................................................................................8
1.1 Outdoor Units ...........................................................................................8
1.2 BP Unit .....................................................................................................9
1.3 Indoor Units ............................................................................................10
Specifications
7
Specifications
SiEBE18-526
1. Specifications
1.1
Outdoor Units
50Hz 230V
Model
RMXS112D7V3B
RMXS140D7V3B
4HP
5HP
RMXS160D7V3B
6HP
Cooling Capacity
kW
(kcal/h)
11.2 (9,630)
14.0 (12,040)
15.5 (13,330)
Heating Capacity
kW
(kcal/h)
12.5 (10,750)
16.0 (13,760)
17.5 (15,050)
Total Indoor Unit Capacity
kW
5.5~14.5
7.0~18.2
8.0~20.8
Power Consumption
W
Running Current
A
—
—
Casing Color
Ivory White
Type
Compressor
Hermetically Sealed Scroll Type
Model
JT100FCVD
Motor Output
Refrigerant
Oil
Refrigerant
Air Flow Rate
(H)
kW
2.5
3.0
Model
Charge
L
1.6
Type
R410A
Charge
kg
Cooling
m³/min
(cfm)
104 (3,671)
104 (3,671)
5.1
110 (3,883)
Heating
m³/min
(cfm)
107 (3,777)
107 (3,777)
109 (3,848)
Type
Fan
Propeller
Motor Output
W
70+70
Running Current
A
0.4+0.4
Power Consumption
W
Starting Current
88+88
A
17.6
22.6
Dimensions (H×W×D)
mm
1,345×900×320
Package Dimensions (H×W×D)
mm
1,475×980×420
Weight
kg
127
Gross Weight
kg
Operation
Sound
Sound Power
132
dBA
51
52
54
Heating
dBA
53
54
56
Cooling
67
68
70
Heating
—
—
—
mm
φ9.5 (Flare Connection)
Gas
mm
φ19.1 (Brazing Connection)
Drain
mm
φ18
Heat Insulation
Both Liquid and Gas Pipes
No. of Wiring Connection
Max. Interunit
Piping
Length
24.9
Cooling
Liquid
Piping
Connection
3.5
DAPHNE FVC68D
3 For Power Supply (Including Earth Wiring), 2 For Interunit Wiring (Outdoor Unit-BP)
Total main piping and
m
Total main piping
m
Total branch piping
m
Max. length for each
m
115
135
145
55
60
80
90
15
Necessity of Additional Charge H
kg/m
Necessary
Max. Installation Height Difference
m
30 (Between Indoor or BP Unit and Outdoor Unit), 15 (Both between Indoor Units and BP Units)
Note:
1. H Refrigerant charge is required. (Chargeless piping length 0m)
Formula for calculation charge : R (kg)
R = Total length (m) of liquid pipe size at φ9.5×0.054 + Total length (m) of liquid piping size at φ6.4×0.022
2. The data are based on the conditions shown in the table below.
Cooling
Heating
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
Piping Length
Refrigerant Piping length : 7.5m
Level difference:0m
Outdoor Unit
Main Piping
Indoor Unit
BP Unit
Branch Piping
(Q0143)
8
Specifications
Specifications
SiEBE18-526
1.2
BP Unit
50Hz 230V
Model
BPMKS967A2B, BPMKS967B2B
Connectable Indoor Units
BPMKS967A3B, BPMKS967B3B
1~2 Units
Casing Color
1~3 Units
Paintingless
Power Consumption
W
10
10
Running Current
A
0.05
0.05
Refrigerant Type
Dimension
R410A
(H×W×D)
mm
Package Dimension (H×W×D)
180×294(650)*×350
mm
257×738×427
Machine Weight
kg
7.5
8
Gross Weight
kg
11
12
Liquid
mm
Main : φ9.5×1/ Branch : φ6.4×2
Main : φ9.5×1/ Branch : φ6.4×3
Gas
mm
Main : φ19.1×1 / Branch : φ15.9×2
Main : φ19.1×1 / Branch : φ15.9×3
Drain
mm
Number of Wiring Connections
Piping
Connection
(Brazing)
4 for Interunit Wiring
Drain Processingless
Heat Insulation
Both Liquid and Gas Pipes
Max. Piping Length
m
Amount of Additional Charge
Max. Height Difference
—
g/m
—
m
—
Max. Combination
kW
14.2
Min. Combination
kW
2.0
Installation Manual
2.0
pc.
1
For Main
L Shape Reducer
20.8
1 (O.D. φ9.5 to I.D. φ6.4)
Gas
1 (O.D. φ15.9 to I.D. φ12.7)
1 (O.D. φ19.1 to I.D. φ15.9, 19.1)
Gas
pc.
Accessories
Liquid
For Branch
Liquid
2 (O.D. φ15.9 to I.D. φ12.7,
9.5)
3 (O.D. φ15.9 to I.D. φ12.7, 9.5)
1 (O.D. φ6.4 to I.D. φ9.5)
Gas
Hanger Metal
pc.
Screws
pc.
Heat Insulation (2pc. is 1 set)
Binding Band
pc.
Drawing No.
4
8 (M4×8)
3 Set
4 Set
2
4D050058
Note:
1. BP or Indoor Unit Max. Height - BP or Indoor Unit Min. Height → Max. 15m.
Set up BP and indoor unit within 15m height difference.
2. The piping connection must be cut so as to suit the piping sizes of the indoor unit which will be connected.
The same sizes should be used for the piping on the outdoor unit.
3. ( )*: including auxiliary piping length
Specifications
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
9
Specifications
1.3
SiEBE18-526
Indoor Units
Wall Mounted Type
50Hz 230V
Model
Rated Capacity
Front Panel Color
Air Flow Rates
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
dBA
38/25/22
38/28/25
38/25/22
38/28/25
56
56
56
56
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D049110A
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D049111A
FTXS25D(2)VMW(9), FTXS25DA(3)VMW(7)
Cooling
Heating
2.5kW Class
White
8.7 (307)
9.4 (332)
6.7 (237)
7.6 (268)
4.7 (166)
5.8 (205)
3.9 (138)
5.0 (177)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.16
0.16
35
35
95.1
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
FTXS25D(2)VML, FTXS25DA(3)VML
Cooling
Heating
2.5kW Class
Silver Line
8.7 (307)
9.4 (332)
6.7 (237)
7.6 (268)
4.7 (166)
5.8 (205)
3.9 (138)
5.0 (177)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.16
0.16
35
35
95.1
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
mm
mm
mm
Rated Capacity
Front Panel Color
m³/min
(cfm)
FTXS20D(2)VML, FTXS20DA(3)VML
Cooling
Heating
2.0kW Class
Silver Line
8.7 (307)
9.4 (332)
6.7 (237)
7.6 (268)
4.7 (166)
5.8 (205)
3.9 (138)
5.0 (177)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.16
0.16
35
35
95.1
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
dBA
Model
Air Flow Rates
FTXS20D(2)VMW(9), FTXS20DA(3)VMW(7)
Cooling
Heating
2.0kW Class
White
8.7 (307)
9.4 (332)
6.7 (237)
7.6 (268)
4.7 (166)
5.8 (205)
3.9 (138)
5.0 (177)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.16
0.16
35
35
95.1
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
dBA
38/25/22
38/28/25
38/25/22
38/28/25
dBA
56
56
56
56
mm
mm
mm
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D049112A
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D049113A
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
10
Specifications
Specifications
SiEBE18-526
50Hz 230V
Model
Rated Capacity
Front Panel Color
Air Flow Rates
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
FTXS35D(2)VMW(9), FTXS35DA(3)VMW(7)
Cooling
Heating
3.5kW Class
White
8.9 (314)
9.7 (342)
6.9 (244)
7.9 (279)
4.8 (169)
6.0 (212)
4.0 (141)
5.2 (184)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.18
0.18
40
40
96.6
96.6
Microcomputer Control
283×800×195
265×855×340
9
12
dBA
39/26/23
39/29/26
39/26/23
39/29/26
dBA
57
57
57
57
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D048875A
mm
mm
mm
Cooling
Rated Capacity
Front Panel Color
CTXS50D(2)VML
Heating
Cooling
5.0kW Class
White
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D049114A
CTXS50D(2)VMW
Model
Air Flow Rates
FTXS35D(2)VML, FTXS35DA(3)VML
Cooling
Heating
3.5kW Class
Silver Line
8.9 (314)
9.7 (342)
6.9 (244)
7.9 (279)
4.8 (169)
6.0 (212)
4.0 (141)
5.2 (184)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.18
0.18
40
40
96.6
96.6
Microcomputer Control
283×800×195
265×855×340
9
12
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
11.4 (402)
9.3 (328)
7.1 (251)
6.2 (219)
Heating
5.0kW Class
Silver Line
11.4 (402)
9.4 (332)
7.4 (261)
6.3 (222)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.21
0.21
48
48
99.4
99.4
Microcomputer Control
283×800×195
265×855×340
9
12
11.4 (402)
9.3 (328)
7.1 (251)
6.2 (219)
11.4 (402)
9.4 (332)
7.4 (261)
6.3 (222)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.21
0.21
48
48
99.4
99.4
Microcomputer Control
283×800×195
265×855×340
9
12
dBA
46/35/32
44/33/30
46/35/32
44/33/30
dBA
64
62
64
62
mm
mm
mm
Both Liquid and Gas Pipes
φ 6.4
φ12.7
φ18.0
3D049115A
Both Liquid and Gas Pipes
φ 6.4
φ12.7
φ18.0
3D049116A
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
Specifications
11
Specifications
SiEBE18-526
50Hz 230V
Model
Rated Capacity
Front Panel Color
Air Flow Rates
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
38/32/25/22
38/33/28/25
38/32/25/22
38/33/28/25
dBA
56
56
56
56
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D044245B
mm
mm
mm
Rated Capacity
Front Panel Color
m³/min
(cfm)
FTXS25CVMB(9)(8), FTXS25CAVMB
Cooling
Heating
2.5kW Class
White
7.7 (272)
7.8 (275)
5.9 (208)
6.5 (230)
4.2 (148)
5.3 (187)
3.6 (127)
4.6 (162)
Cross Flow Fan
18
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.18
0.18
40
40
96.6
96.6
Microcomputer Control
273×784×195
258×834×325
7.5
11
dBA
Model
Air Flow Rates
FTXS20CVMB(9), FTXS20CAVMB
Cooling
Heating
2.5kW Class
White
7.7 (272)
7.8 (275)
5.9 (208)
6.5 (230)
4.2 (148)
5.3 (187)
3.6 (127)
4.6 (162)
Cross Flow Fan
18
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.18
0.18
40
40
96.6
96.6
Microcomputer Control
273×784×195
258×834×325
7.5
11
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D044246B
FTXS35CVMB(9)(8), FTXS35CAVMB
Cooling
Heating
3.5kW Class
White
7.7 (272)
8.1 (286)
6.0 (212)
6.7 (237)
4.4 (155)
5.3 (187)
3.8 (134)
4.6 (162)
Cross Flow Fan
18
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.18
0.18
40
40
96.6
96.6
Microcomputer Control
273×784×195
258×834×325
7.5
11
FTXS50BVMB
Cooling
Heating
5.0kW Class
White
11.4 (402)
9.7 (342)
8.0 (282)
7.1 (251)
12.6 (445)
10.8 (381)
8.9 (314)
7.7 (272)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.18
0.20
40
45
96.6
97.8
Microcomputer Control
290×795×238
280×840×338
9
13
dBA
39/33/26/23
39/34/29/26
44/40/35/32
42/38/33/30
dBA
57
57
63
60
mm
mm
mm
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D044247B
Both Liquid and Gas Pipes
φ 6.4
φ12.7
φ18.0
3D040778A
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
12
Specifications
Specifications
SiEBE18-526
50Hz 230V
FTXS60BVMB
Model
Cooling
Rated Capacity
Front Panel Color
Air Flow Rates
Cooling
6.0kW Class
White
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
FTXS71BVMB
Heating
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
16.2 (572)
13.6 (480)
11.4 (402)
10.2 (360)
Heating
7.1kW Class
White
17.4 (614)
15.1 (533)
12.7 (448)
11.4 (402)
Cross Flow Fan
43
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.18
0.20
40
45
96.6
97.8
Microcomputer Control
290×1,050×238
337×1,147×366
12
17
16.7 (590)
14.2 (501)
11.6 (409)
10.6 (374)
18.5 (653)
15.1 (533)
13.5 (477)
12.1 (427)
Cross Flow Fan
43
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.20
0.22
45
50
96.4
97.6
Microcomputer Control
290×1,050×238
337×1,147×366
12
17
dBA
45/41/36/33
44/40/35/32
46/42/37/34
46/42/37/34
dBA
63
62
63
63
mm
mm
mm
Both Liquid and Gas Pipes
φ 6.4
φ12.7
φ18.0
3D040779
Both Liquid and Gas Pipes
φ 6.4
φ15.9
φ18.0
3D040780A
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
Specifications
13
Specifications
SiEBE18-526
Duct Connected Type
50Hz 230V
FDXS25CVMB, FDXS25CAVMB
Cooling
Heating
2.5kW Class
Model
Rated Capacity
Front Panel Color
—
m³/min
(cfm)
Air Flow Rates
Fan
Type
Motor Output
Speed
H
M
L
SL
W
Steps
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
External Static Pressure
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
A
W
%
mm
mm
kg
kg
dBA
Pa
mm
mm
mm
9.5 (335)
8.8 (311)
8.0 (282)
6.7 (237)
Sirocco Fan
62
5 Steps, Silent, Auto
Removable-Washable-Mildew Proof
0.47
0.47
100
100
92.5
92.5
Microcomputer Control
200×900×620
266×1,106×751
25
31
35/33/31/29
35/33/31/29
40
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
VP20 (O.D. φ 26 / I.D. φ 20)
3D048945B
Cooling
Rated Capacity
Front Panel Color
10.0 (353)
9.3 (328)
8.5 (300)
7.0 (247)
10.0 (353)
9.3 (328)
8.5 (300)
7.0 (247)
Sirocco Fan
62
5 Steps, Silent, Auto
Removable-Washable-Mildew Proof
0.47
0.47
100
100
92.5
92.5
Microcomputer Control
200×900×620
266×1,106×751
25
31
35/33/31/29
35/33/31/29
40
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
VP20 (O.D. φ 26 / I.D. φ 20)
3D048946B
CDXS60CVMB
Heating
Cooling
5.0kW Class
m³/min
(cfm)
Type
Motor Output
Speed
W
Steps
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
External Static Pressure
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Note:
H
M
L
SL
A
W
%
mm
mm
kg
kg
dBA
Pa
mm
mm
mm
12.0 (424)
11.0 (388)
10.0 (353)
8.4 (297)
—
12.0 (424)
11.0 (388)
10.0 (353)
8.4 (297)
Sirocco Fan
130
5 Steps, Silent, Auto
Removable-Washable-Mildew Proof
0.64
0.64
140
140
95.1
95.1
Microcomputer Control
200×900×620
266×1,106×751
27
34
37/35/33/31
Heating
6.0kW Class
—
Air Flow Rates
14
—
9.5 (335)
8.8 (311)
8.0 (282)
6.7 (237)
CDXS50CVMB
Model
Fan
FDXS35CVMB, FDXS35CAVMB
Cooling
Heating
3.5kW Class
37/35/33/31
40
Both Liquid and Gas Pipes
φ 6.4
φ12.7
VP20 (O.D. φ 26 / I.D. φ 20)
3D046063A
16.0 (565)
14.8 (523)
13.5 (477)
11.2 (395)
16.0 (565)
14.8 (523)
13.5 (477)
11.2 (395)
Sirocco Fan
130
5 Steps, Silent, Auto
Removable-Washable-Mildew Proof
0.74
0.74
160
160
94.0
94.0
Microcomputer Control
200×1,100×620
266×1,306×751
30
37
38/36/34/32
38/36/34/32
40
Both Liquid and Gas Pipes
φ 6.4
φ12.7
VP20 (O.D. φ 26 / I.D. φ 20)
3D046064A
1. The operating sound is based on the rear side suction inlet and the external static pressure 40 Pa.
Operating sound for under side suction inlet:[operating sound for rear side suction inlet ]+5 dB.
However, when installation to which the external static pressure becomes low is carried out,
5 dB or more may go up.
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
Specifications
Specifications
SiEBE18-526
Floor / Ceiling Suspended Dual Type
50Hz 230V
Model
Rated Capacity
Front Panel Color
Air Flow Rates
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
37/34/31/28
37/34/31/29
38/35/32/29
39/36/33/30
dBA
53
—
54
—
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D040174A
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D040175A
FLXS50BVMB, FLXS50BAVMB
Cooling
Heating
5.0kW Class
Almond White
11.4 (402)
12.1 (427)
10.0 (353)
9.8 (346)
8.5 (300)
7.5 (265)
7.5 (265)
6.8 (240)
Sirocco Fan
34
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.45
0.45
96
96
92.8
92.8
Microcomputer Control
490×1,050×200
280×1,100×566
17
24
FLXS60BVMB, FLXS60BAVMB
Cooling
Heating
5.7kW Class
Almond White
12.0 (424)
12.8 (452)
10.7 (378)
10.6 (374)
9.3 (328)
8.4 (297)
8.3 (293)
7.5 (265)
Sirocco Fan
34
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.47
0.45
98
96
90.7
92.8
Microcomputer Control
490×1,050×200
280×1,100×566
17
24
mm
mm
mm
Rated Capacity
Front Panel Color
m³/min
(cfm)
FLXS35BVMB, FLXS35BAVMB
Cooling
Heating
3.5kW Class
Almond White
8.6 (304)
9.8 (346)
7.6 (268)
8.9 (314)
6.6 (233)
8.0 (282)
5.6 (198)
7.2 (254)
Sirocco Fan
34
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.36
0.36
78
78
94.2
94.2
Microcomputer Control
490×1,050×200
280×1,100×566
16
22
dBA
Model
Air Flow Rates
FLXS25BVMB, FLXS25BAVMB
Cooling
Heating
2.5kW Class
Almond White
7.6 (268)
9.2 (325)
6.8 (240)
8.3 (293)
6.0 (212)
7.4 (261)
5.2 (184)
6.6 (233)
Sirocco Fan
34
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
0.32
0.34
70
74
95.1
94.6
Microcomputer Control
490×1,050×200
280×1,100×566
16
22
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
dBA
47/43/39/36
46/41/35/33
48/45/41/39
47/42/37/34
dBA
63
32
64
63
mm
mm
mm
Both Liquid and Gas Pipes
φ 6.4
φ12.7
φ18.0
3D040826
Both Liquid and Gas Pipes
φ 6.4
φ12.7
φ18.0
3D040827A
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
Specifications
15
Specifications
SiEBE18-526
Floor Standing Type
50Hz 230V
Model
Rated Capacity
Front Panel Color
Air Flow Rates
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
FVXS25BVMB, FVXS25BAVMB
Cooling
Heating
2.5kW Class
Almond White
8.1 (286)
9.2 (325)
6.2 (219)
7.0 (247)
4.3 (152)
4.8 (169)
3.4 (120)
3.5 (124)
Cross Flow Fan
14+14
5 Steps, Silent, Auto
Right, Left, Horizontal, Upward
Removable-Washable-Mildew Proof
0.14
0.14
32
32
99.4
99.4
Microcomputer Control
600×650×195
714×770×294
13
19
dBA
38/32/26/23
38/32/26/23
39/33/27/24
39/34/29/26
dBA
54
—
55
—
mm
mm
mm
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D040172A
Cooling
Rated Capacity
Front Panel Color
Heating
5.0kW Class
Almond White
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/M/L/SL
Sound
Sound Power H
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
φ18.0
3D040173A
FVXS50BVMB, FVXS50BAVMB
Model
Air Flow Rates
FVXS35BVMB, FVXS35BAVMB
Cooling
Heating
3.5kW Class
Almond White
8.3 (293)
9.2 (325)
6.3 (222)
7.1 (251)
4.3 (152)
5.0 (177)
3.4 (120)
3.6 (127)
Cross Flow Fan
14+14
5 Steps, Silent, Auto
Right, Left, Horizontal, Upward
Removable-Washable-Mildew Proof
0.14
0.14
32
32
99.4
99.4
Microcomputer Control
600×650×195
714×770×294
13
19
H
M
L
SL
10.8 (381)
9.2 (325)
7.7 (272)
6.7 (237)
Cross Flow Fan
14+14
5 Steps, Silent, Auto
Right, Left, Horizontal, Upward
Removable-Washable-Mildew Proof
W
Steps
A
W
%
0.26
55
92.0
0.32
70
95.1
Microcomputer Control
600×650×195
714×770×294
13
19
mm
mm
kg
kg
dBA
44/40/36/33
dBA
56
mm
mm
mm
13.2 (466)
11.3 (399)
9.4 (332)
8.3 (293)
45/40/36/33
57
Both Liquid and Gas Pipes
φ 6.4
φ12.7
φ20.0
3D040831
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
16
Specifications
Specifications
SiEBE18-526
Ceiling Mounted Cassette Type
50Hz 230V
FFQ25B7V1B
Model
Heating
Rated Capacity
Decoration
Panel
m³/min
(cfm)
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Heating
3.5kW Class
White
55×700×700
H
9.0 (318)
9.0 (318)
10.0 (353)
M
L
—
—
—
—
6.5 (230)
6.5 (230)
6.5 (230)
6.5 (230)
SL
—
—
—
—
Turbo Fan
55
2 Steps
Horizontal, Downward
W
Steps
A
W
%
dBA
Sound Power H
Heat Insulation
dBA
Liquid
Gas
Drain
mm
mm
mm
Drawing No.
—
0.37
73
85.8
0.32
64
87.0
0.40
84
91.3
Microcomputer Control
260(286)×575×575
370×687×674
17.5
21
mm
mm
kg
kg
29.5/24.5
0.36
76
91.8
Microcomputer Control
260(286)×575×575
370×687×674
17.5
21
29.5/24.5
46.5
—
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
VP20 (O.D φ 26 / I.D φ 20)
3D040445
32.0/25.0
FFQ60B7V1B
Cooling
Heating
Rated Capacity
m³/min
(cfm)
Air Flow Rates
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Heating
6.0kW Class
White
55×700×700
H
12.0 (424)
12.0 (424)
15.0 (530)
M
L
—
—
—
—
8.0 (283)
8.0 (283)
10.0 (353)
10.0 (353)
SL
—
—
—
—
Turbo Fan
55
2 Steps
Horizontal, Downward
W
Steps
A
W
%
Drawing No.
H
0.45
89
86.0
0.61
120
85.5
Microcomputer Control
260(286)×575×575
370×687×674
17.5
21
0.56
111
86.2
Microcomputer Control
260(286)×575×575
370×687×674
17.5
21
dBA
36.0/27.0
36.0/27.0
41.0/32.0
41.0/32.0
dBA
53.0
—
58.0
—
Heat Insulation
Liquid
Gas
Drain
—
0.49
97
86.1
mm
mm
kg
kg
15.0 (530)
Turbo Fan
55
2 Steps
Horizontal, Downward
—
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D) H
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Piping Connection
Cooling
5.0kW Class
White
55×700×700
Color
Dimensions (H×W×D)
32.0/25.0
49.0
—
Both Liquid and Gas Pipes
φ 6.4
φ 9.5
VP20 (O.D φ 26 / I.D φ 20)
3D040443
FFQ50B7V1B
Model
10.0 (353)
Turbo Fan
55
2 Steps
Horizontal, Downward
—
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H×W×D) H
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Piping Connection
Cooling
2.5kW Class
White
55×700×700
Color
Dimensions (H×W×D)
Air Flow Rates
Decoration
Panel
FFQ35B7V1B
Cooling
mm
mm
mm
Both Liquid and Gas Pipes
φ 6.4
φ 12.7
VP20 (O.D φ 26 / I.D φ 20)
3D040441
( ) : dimension including control box
Both Liquid and Gas Pipes
φ 6.4
φ 12.7
VP20 (O.D φ 26 / I.D φ 20)
3D040436
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
Specifications
17
Specifications
SiEBE18-526
Ceiling-suspended Type
50Hz 230V
Model
Rated Capacity
Decoration
Panel
Air Flow Rates
Color
Dimensions (H×W×D)
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Temperature Control
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H/L
Heat Insulation
Liquid
Gas
Piping Connection
Drain
Drawing No.
Fan
H
M
L
SL
W
Steps
mm
mm
kg
kg
FHQ35BUV1B9
Cooling
Heating
3.5kW Class
White
—
13.0 (458)
13.0 (458)
—
10.0 (353)
10.0 (353)
—
Sirocco Fan
62
2 Steps
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
Microcomputer Control
195×960×680
279×1,046×818
24
31
FHQ50BUV1B9
Cooling
Heating
5.0kW Class
White
—
13.0 (458)
13.0 (458)
—
10.0 (353)
10.0 (353)
—
Sirocco Fan
62
2 Steps
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
Microcomputer Control
195×960×680
279×1,046×818
25
32
FHQ60BUV1B9
Cooling
Heating
6.0kW Class
White
—
17.0 (600)
16.0 (565)
—
13.0 (459)
13.0 (459)
—
Sirocco Fan
62
2 Steps
Right, Left, Horizontal, Downward
Removable-Washable-Mildew Proof
Microcomputer Control
195×1,160×680
279×1,246×818
27
35
dBA
37/32
38/33
39/33
dBA
53/48
Both Liquid and Gas Pipes
φ 6.4 (Flare)
φ 9.5 (Flare)
VP20 (O.D.φ 26 / I.D.φ 20)
3D037992E
54/49
Both Liquid and Gas Pipes
φ 6.4 (Flare)
φ12.7 (Flare)
VP20 (O.D.φ 26 / I.D.φ 20)
3D037992E
55/49
Both Liquid and Gas Pipes
φ 6.4 (Flare)
φ12.7 (Flare)
VP20 (O.D.φ 26 / I.D.φ 20)
3D037992E
mm
mm
mm
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
18
Specifications
SiEBE18-526
Part 3
Printed Circuit Board
Connector Wiring Diagram
1. Printed Circuit Board Connector Wiring Diagram..................................20
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
Outdoor Unit RMXS 112/140/160 D7V3B ..............................................20
Branch Provider Unit BPMKS967A2B, B2B, A3B, B3B .........................24
Wall Mounted Type 20/25/35/50 Class - D Series .................................25
Wall Mounted Type 20/25/35 Class - C Series ......................................27
Wall Mounted Type 50/60/71 Class - B Series.......................................29
Duct Connected Type.............................................................................31
Floor / Ceiling Suspended Dual Type.....................................................32
Floor Standing Type ...............................................................................35
Ceiling Mounted Cassette 600×600 Type ..............................................38
Ceiling Suspended Type ........................................................................40
Printed Circuit Board Connector Wiring Diagram and Name
19
Printed Circuit Board Connector Wiring Diagram
SiEBE18-526
1. Printed Circuit Board Connector Wiring Diagram
1.1
Outdoor Unit RMXS 112/140/160 D7V3B
1.1.1 Control PCB (A1P)
Connectors
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Note:
20
X1A
X2A
X3A
X5A
X6A
X25A
X26A
X28A
X34A
X37A
11) X44A
12) X45A
13) X46A
Connector to Filter PCB (A3P)
Connector for SVP (Hot Gas Bypass Valve)
Connector for SVG (Receiver Gas Discharging Valve)
Connector for 4 Way Valve
Connector for Crankcase Heater
Connector for Inverter PCB (A2P)
Connector for Electronic Expansion Valve (Main)
Connector for Electronic Expansion Valve (Sub Cool)
Connector for Discharge Pipe Thermistor
Connector for Thermistors
(Suction Pipe, Heat Exchanger and SC Heat Exchanger Gas Pipe)
Connector for Outdoor Air Thermistor
Connector for High Pressure Sensor
Connector for Low Pressure Sensor
Other Designation
1) HAP
2) H1P to H7P
3) BS1 to BS5
4) DS1
5) X1M
Service Monitor LED
Service Monitor LED
Push Button Switch (for Mode Select, Field Setting and Test Operation)
Dip Switch for Cool / Heat Selector
Terminal for Cool / Heat Selector and Transmission to BP unit
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
Printed Circuit Board Connector Wiring Diagram
PCB Detail
X34A
X37A
X44A
X45A
X46A
X25A
X28A
X1M
X26A
DS1
HAP
H1P
to H7P
X6A
BS1
to BS5
X5A
X1A
X2A
X3A
2P119093P
Printed Circuit Board Connector Wiring Diagram and Name
21
Printed Circuit Board Connector Wiring Diagram
SiEBE18-526
1.1.2 Inverter PCB (A2P)
Connectors
1)
2)
3)
4)
5)
X60A
X205A
X206A
X207A
LC, NC
Connector for High Pressure Switch
Connector for Control PCB (A1P)
Connector for Fan Motor (Upper Side)
Connector for Fan Motor (Lower Side)
Terminal for Filter PCB (A3P)
PCB Detail
LC
NC
X206A
X207A
X60A
X205A
2P135876B
22
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
Printed Circuit Board Connector Wiring Diagram
1.1.3 Filter PCB (A3P)
Connectors
1) X1A
2) LA, NA
3) LB, NB
Note:
Connector for Control PCB (A1P)
Terminal for X1M (Power Supply Terminal Strip)
Terminal for Inverter PCB (A2P)
Other Designation
1) F1U
Fuse (250V 6.3A)
2) GND
Earth Terminal
PCB Detail
NB
LB
F1U
X1A
GND
NA
Printed Circuit Board Connector Wiring Diagram and Name
LA
2P135804A
23
Printed Circuit Board Connector Wiring Diagram
1.2
SiEBE18-526
Branch Provider Unit BPMKS967A2B, B2B, A3B, B3B
Connectors
1) X20A
2) X21A to X23A
3) X90A
Note:
Connector for Bypass Electronic Expansion Valve
Connector for Electronic Expansion Valve to Room A, B and C
Connector for Thermistors
Other Designations
1) F2U
2) X3M
3) X4M
4) X5M
5) F1, F2 (on X6M)
6) L1, N1 (on X1M)
7) L2, L2 (on X1M)
8) H1P(LED-A)
9) H2P~H5P (LED 1 to 4)
Fuse (AC250V 3.15A)
Terminal for Inter Connecting Wire to Room A
Terminal for Inter Connecting Wire to Room B
Terminal for Inter Connecting Wire to Room C
Terminal for Transmission to Outdoor Unit or Other BP units
Terminal for Power Supply (230V 50Hz)
Terminal for Power Supply to other BP units
LED for Service Monitor
LED for Fault Indication
X23A and X5M are not used for BPMKS967A2B, B2B.
PCB Detail
X90A
X23A
X22A
X3M
X21A
H1P (LED A)
H2P (LED 1)
H3P (LED 2)
H4P (LED 3)
H5P (LED 4)
X4M
X20A
F2
X6M
F1
N2
L2
N1
N2
L2
X5M
X1M
L1
N1
L1
F2U
3P152439A
24
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
1.3
Printed Circuit Board Connector Wiring Diagram
Wall Mounted Type 20/25/35/50 Class - D Series
Connectors
PCB(1) (Control PCB)
1)
2)
3)
4)
5)
6)
7)
S1
S6
S21
S26
S28
S32
S35
Connector for DC fan motor
Connector for swing motor (horizontal blades)
Connector for centralized control (HA)
Connector for display PCB
Connector for signal receiver PCB
Connector for heat exchanger thermistor
Connector for INTELLIGENT EYE sensor PCB
PCB(2) (Signal Receiver PCB)
1) S29
Connector for control PCB
PCB(3) (Display PCB)
1) S27
Connector for control PCB
PCB(4) (INTELLIGENT EYE sensor PCB)
1) S36
Note:
Connector for control PCB
Other designations
PCB(1) (Control PCB)
1) V1
2) JA
JB
JC
3) LED A
4) FU1
Varistor
Address setting jumper
Fan speed setting when compressor is OFF on thermostat
Power failure recovery function (auto-restart)
∗ Refer to page 139 for detail.
LED for service monitor (green)
Fuse (3.15A)
PCB(3) (Display PCB)
1)
2)
3)
4)
5)
SW1 (S1W)
LED1
LED2
LED3
RTH1 (R1T)
Forced operation ON / OFF switch
LED for operation (green)
LED for timer (yellow)
LED for INTELLIGENT EYE (green)
Room temperature thermistor
Printed Circuit Board Connector Wiring Diagram and Name
25
Printed Circuit Board Connector Wiring Diagram
PCB Detail
SiEBE18-526
PCB(1): Control PCB
V1
S1
Fu1
S6
S21
S35
LED A
JA
JB JC
S32
S28
S26
(R4288)
PCB(2): Signal Receiver PCB
PCB(3): Display PCB
S27
SW1
S29
LED1 LED2
(R4289)
LED3
RTH1
(R4290)
PCB(4): INTELLIGENT EYE sensor PCB
S36
(R4291)
26
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
1.4
Printed Circuit Board Connector Wiring Diagram
Wall Mounted Type 20/25/35 Class - C Series
Connectors
PCB(1) (Control PCB)
1)
2)
3)
4)
5)
6)
7)
S1
S6
S7
S21
S26
S32
S35
Connector for fan motor
Connector for swing motor (Horizontal Flap)
Connector for AC fan motor
Connector for centralized control to 5 rooms
Connector for signal receiver PCB
Connector for heat exchanger thermistor
Connector for INTELLIGENT EYE Sensor PCB
PCB(2) (Signal Receiver PCB)
1) S27
Connector for control PCB
PCB(3) (INTELLIGENT EYE Sensor PCB)
1) S36
Note:
Connector for control PCB
Other designations
PCB(1) (Control PCB)
1) V1
2) JA
JB
JC
3) LED A
4) FU1
Varistor
Address setting jumper
Fan speed setting when compressor is OFF on thermostat
Power failure recovery function
∗ Refer to page 139 for more detail.
LED for service monitor (green)
Fuse (3.15A)
PCB(2) (Signal Receiver PCB)
1)
2)
3)
4)
5)
SW7 (S1W)
LED1
LED2
LED3
RTH1 (R1T)
Forced operation ON/OFF switch
LED for operation (green)
LED for timer (yellow)
LED for HOME LEAVE operation (red)
Room temperature thermistor
Printed Circuit Board Connector Wiring Diagram and Name
27
Printed Circuit Board Connector Wiring Diagram
PCB Detail
SiEBE18-526
PCB(1): Control PCB
PCB(2): Signal Receiver PCB
PCB(3): INTELLIGENT EYE Sensor PCB
PCB (1) Control
FU1
SW7
S1
LED1
LED2
PCB (2) Signal reciever
V1
Pb Free
LED3
S27
RTH1
5V Check
Pb Free
S7
S21
12V Check
S6
PCB (3)
INTELLIGENT EYE
sensor
GND
S36
S35
S32
LED A
28
JA
JB
JC
S26
(R4886)
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
1.5
Printed Circuit Board Connector Wiring Diagram
Wall Mounted Type 50/60/71 Class - B Series
Connectors
PCB(1) (Control PCB)
1)
2)
3)
4)
5)
6)
7)
8)
S1
S6
S8
S21
S26
S28
S32
S35
Connector for DC fan motor
Connector for swing motor (horizontal blades)
Connector for swing motor (vertical blades)
Connector for centralized control (HA)
Connector for buzzer PCB
Connector for signal receiver PCB
Connector for heat exchanger thermistor
Connector for Intelligent Eye sensor PCB
PCB(2) (Signal Receiver PCB)
1) S29
Connector for control PCB
PCB(3) (Buzzer PCB)
1) S27
2) S38
Connector for control PCB
Connector for display PCB
PCB(4) (Display PCB)
1) S37
Connector for buzzer PCB
PCB(5) (INTELLIGENT EYE sensor PCB)
1) S36
Note:
Connector for control PCB
Other designations
PCB(1) (Control PCB)
1) V1
2) JA
JB
JC
3) LED A
4) FU1
Varistor
Address setting jumper
Fan speed setting when compressor is OFF on thermostat
Power failure recovery function
∗ Refer to page 139 for detail.
LED A for service monitor (green)
Fuse (3.15A)
PCB(2) (Signal Receiver PCB)
1) SW1 (S1W)
Forced operation ON/OFF switch
PCB(3) (Buzzer PCB)
1) RTH1 (R1T)
Room temperature thermistor
PCB(4) (Display PCB)
4) LED1
5) LED2
6) LED3
LED for operation (green)
LED for timer (yellow)
LED for HOME LEAVE operation (red)
Printed Circuit Board Connector Wiring Diagram and Name
29
Printed Circuit Board Connector Wiring Diagram
PCB Detail
SiEBE18-526
PCB(1): Control PCB (indoor unit)
S1
V1
FU1
S21
S6
S8
S35
LED A
JA
JB JC
PCB(2): Signal Receiver PCB
S32 S28
S26
(R2860)
PCB(3): Buzzer PCB
S27
SW1
S38
S29
(R2861)
RTH1
PCB(4): Display PCB
LED1
LED2
(R2862)
PCB(5): Intelligent Eye sensor PCB
LED3
S37
(R2863)
S36
(R2864)
30
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
1.6
Printed Circuit Board Connector Wiring Diagram
Duct Connected Type
Connectors
PCB(1) (Control PCB)
1)
2)
3)
4)
5)
S1
S7
S21
S26
S32
Connector for AC fan motor
Connector for AC fan motor
Connector for centralized control to 5 rooms
Connector for display PCB
Connector for heat exchanger thermistor
PCB(2) (Display PCB)
1) S1
Note:
Connector for control PCB
Other designations
PCB(1) (Control PCB)
1) V1
2) JA
JB
JC
3) LED A
4) FU1
Varistor
Address setting jumper
Fan speed setting when compressor is OFF on thermostat
Power failure recovery function
∗ Refer to page 139 for more detail.
LED for service monitor (green)
Fuse (3.15A)
PCB(2) (Display PCB)
1)
2)
3)
4)
5)
SW1 (S1W)
LED1
LED2
LED3
RTH1 (R1T)
Forced operation ON/OFF switch
LED for operation (green)
LED for timer (yellow)
LED for HOME LEAVE operation (red)
Room temperature thermistor
PCB Detail
PCB (1): Control PCB
„ Refer to PCB (1) Control on P28.
PCB Detail
PCB (2): Display PCB
S1
SW1
LED3
LED2
RTH1
LED1
Pb Free
2P084375C
Printed Circuit Board Connector Wiring Diagram and Name
31
Printed Circuit Board Connector Wiring Diagram
1.7
SiEBE18-526
Floor / Ceiling Suspended Dual Type
Connectors
PCB(1) (Control PCB)
1) S6
2) S7
3) S21
4) S24
5) S26
6) S32
7) S37
Connector for swing motor (horizontal swing)
Connector for AC fan motor
Connector for centralized control
Connector for display PCB
Connector for signal receiver PCB
Connector for heat exchanger thermistor
Connector for power supply PCB
PCB(2) (Power Supply PCB)
1) S36
Connector for control PCB
PCB(3) (Display PCB)
1) S25
Connector for control PCB
PCB(4) (Signal Receiver PCB)
1) S27
2) S31
Note:
Connector for control PCB
Connector for room temperature thermistor
Other designations
PCB(1) (Control PCB)
1) JA
JB
JC
2) SW2
3) LED A
Address setting jumper
Fan speed setting when compressor is OFF on thermostat
Power failure recovery function
∗ Refer to page 139 for detail.
Select switch ceiling or floor
LED for service monitor (green)
PCB(2) (Power Supply PCB)
1) V1
1) FU1
Varistor
Fuse (3.15A)
PCB(3) (Display PCB)
1) LED1
2) LED2
3) LED3
LED for operation (green)
LED for timer (yellow)
LED for HOME LEAVE operation (red)
PCB(4) (Signal Receiver PCB)
1) SW1 (S1W)
32
Forced operation ON/OFF switch
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
Printed Circuit Board Connector Wiring Diagram
PCB Detail
PCB (1): Control PCB
Fb Free
S21
LED A
SW2
S26
S7
S6
12V Check
S32
S37
JC
5V Check
JB
S37
GND
JA
PCB Detail
2P084352E
PCB (2): Power Supply PCB
S36
FU1
Pb Free
V1
Printed Circuit Board Connector Wiring Diagram and Name
2P084361E
33
Printed Circuit Board Connector Wiring Diagram
SiEBE18-526
PCB (3): Display PCB
Pb Free
LED3
LED2
LED1
S25
2P084377C
PCB (4): Signal Receiver PCB
Pb Free
SW1
S27
S31
2P084377C
34
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
1.8
Printed Circuit Board Connector Wiring Diagram
Floor Standing Type
Connectors
PCB(1) (Power Supply PCB)
1) S8, S202,
S204
Connector for control PCB
PCB(2) (Control PCB)
1)
2)
3)
4)
5)
S6
S21
S23
S31, S32
S7, S201,
S203
6) S25
7) S301, S302
Connector for swing motor and lower air outlet motor
Connector for centralized control
Connector for display PCB
Connector for room temperature / heat exchanger thermistor
Connector for power supply PCB
Connector for Signal receiver PCB
Connector for DC fan motors
PCB(3) (Signal Receiver PCB)
1) S26
Connector for control PCB
PCB(4) (Display PCB)
1) S24
Note:
Connector for control PCB
Other Designations
PCB(2) (Control PCB)
1) V1
2) JA
JB
JC
3) FU
4) LED A
Varistor
Address setting jumper
Fan speed setting when compressor is OFF on thermostat
Power failure recovery function
∗ Refer to page 139 for detail.
Fuse (3.15A)
LED for service monitor (green)
PCB(3) (Signal Receiver PCB)
1) SW2
2) SW4
Changing upward air flow limit switch
Discharge changeover switch
PCB(4) (Display PCB)
1)
2)
3)
4)
SW1 (S1W)
LED11
LED12
LED14
Forced operation ON/OFF switch
LED for operation (green)
LED for timer (yellow)
LED for HOME LEAVE operation (red)
Printed Circuit Board Connector Wiring Diagram and Name
35
Printed Circuit Board Connector Wiring Diagram
PCB Detail
SiEBE18-526
PCB (1): Power Supply PCB
PCB1
S202
S8
S204
2P044051F
36
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
Printed Circuit Board Connector Wiring Diagram
PCB Detail
PCB (2): Control PCB
PCB (3): Display PCB
PCB (4): Signal Receiver PCB
Pb Free
S25
S302
SW2
S301
S6
Pb Free
S23
PCB 3
S26
JA
SW4
JB
JC
S21
S24
LED 14
PCB 2
PCB 4
S201
LED 12
Pb Free
SW1
LED 11
LED A
S203
S32
S31
S7
V1
FU
2P088265D
Printed Circuit Board Connector Wiring Diagram and Name
37
Printed Circuit Board Connector Wiring Diagram
1.9
SiEBE18-526
Ceiling Mounted Cassette 600×600 Type
Connectors
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
Note:
38
X5A
X15A
X17A
X18A
X19A
X20A
X24A
X25A
X27A
X33A
X35A
X36A
X40A
X60A, X61A
Connector for Terminal Strip (for Wired Remote Controller)
Connector for Float Switch
Connector for Heat Exchanger Thermistor (2)
Connector for Heat Exchanger Thermistor (1)
Connector for Room Temperature Thermistor
Connector for Fan Motor
Connector for Wireless Remote Controller Receiver Unit
Connector for Drain Pump Motor
Connector for Terminal Strip (for Inter Unit Wiring)
Connector for Wring Adaptor PCB (Optional Accessory)
Connector for Group Control Adaptor (Optional Accessory)
Connector for Swing Motor
Connector for ON/OFF Input from Outside (for Optional Accessory)
Connector for Interface Adaptor (Optional Accessory)
Other Designation
1) HAP
Service Monitor LED
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
Printed Circuit Board Connector Wiring Diagram
PCB Detail
X25A
X20A
X27A
X18A
X33A
Capacity
setting
adaptor
X61A
X19A
X36A
X60A
X40A
HAP
(Service
monitor LED)
X17A
X24A
X35A
X15A
X5A
2P095006T
Printed Circuit Board Connector Wiring Diagram and Name
39
Printed Circuit Board Connector Wiring Diagram
SiEBE18-526
1.10 Ceiling Suspended Type
Connectors
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
Note:
40
X5A
X14A
X15A
X17A
X18A
X19A
X20A, X26A
X24A
X25A
X27A
X29A
X33A
X35A
X40A
X60A, X61A
Connector for Terminal Strip (for Wired Remote Controller)
Connector for Limit Switch (for Swing Flap)
Connector for Drain Pump (Optional Accessory)
Connector for Heat Exchanger Thermistor (2)
Connector for Heat Exchanger Thermistor (1)
Connector for Room Temperature Thermistor
Connector for Fan Motor
Connector for Wireless Remote Controller Receiver Unit
Connector for Drain Pump Motor (Optional Accessory)
Connector for Terminal Strip (for Inter Unit Wiring)
Connector for Swing Motor
Connector for Wring Adaptor PCB (Optional Accessory)
Connector for Group Control Adaptor (Optional Accessory)
Connector for ON/OFF Input from Outside (for Optional Accessory)
Connector for Interface Adaptor (Optional Accessory)
Other Designation
1) HAP
Service Monitor LED
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
Printed Circuit Board Connector Wiring Diagram
PCB Detail
X19A
X18A
Capacity setting
adaptor
X40A
X15A
X17A
X14A
X35A
X61A
X60A
X33A
X5A
HAP
(Service
monitor
LED)
X24A
X26A
X27A
X29A
X20A
X25A
2P095007U
Printed Circuit Board Connector Wiring Diagram and Name
41
Printed Circuit Board Connector Wiring Diagram
42
SiEBE18-526
Printed Circuit Board Connector Wiring Diagram and Name
SiEBE18-526
Part 4
Refrigerant Circuit
1. Refrigerant Circuit .................................................................................44
1.1 RMXS 112/140/160 D7V3B....................................................................44
1.2 BPMKS 967 A2B, B2B, A3B, B3B..........................................................46
2. Functional Parts Layout ........................................................................47
2.1 RMXS 112/140/160 D7V3B....................................................................47
3. Refrigerant Flow for Each Operation Mode...........................................48
3.1
3.2
3.3
3.4
Main Functions
Cooling Operation ..................................................................................48
Heating Operation ..................................................................................49
Cooling Oil Return Operation .................................................................50
Heating Oil Return Operation & Defrost Operation ................................51
43
Refrigerant Circuit
SiEBE18-526
1. Refrigerant Circuit
1.1
RMXS 112/140/160 D7V3B
No. in
refrigerant
Symbol
system
diagram
Major Function
A
M1C
Inverter compressor (INV)
Inverter compressor is operated on frequencies between 52 Hz and 190 Hz by using
the inverter.
25 steps
D
M1F
M2F
Inverter fan
Since the system is of air heat exchanging type, the fan is operated at 8-step rotation
speed by using the inverter.
E
Y1E
Electronic expansion valve
(Main: EV1)
While in heating operation, PI control is applied to keep the outlet superheated degree
of air heat exchanger constant.
F
Y2E
Electronic expansion valve
(Subcool: EV2)
Pl control is applied to keep the outlet superheated degree of subcooling heat
exchanger constant.
G
Y1S
Solenoid valve (Hot gas: SVP) Used to prevent the low pressure from transient falling.
Y2S
Solenoid valve (Receiver gas
discharging: SVG)
Used to collect refrigerant to receiver.
Y3S
Four way valve
Used to switch the operation mode between cooling and heating.
J
M
44
Name
N
S1NPH High pressure sensor
Used to detect high pressure.
O
S1NPL Low pressure sensor
Used to detect low pressure.
P
S1PH
S
HP pressure switch (For INV
compressor)
In order to prevent the increase of high pressure when a malfunction occurs, this
switch is activated at high pressure of 4.0 MPa or more to stop the compressor
operation.
—
Fusible plug
In order to prevent the increase of pressure when abnormal heating is caused by fire
or others, the fusible part of the plug is molten at a temperature of 70 to 75°C to
release the pressure into the atmosphere.
T
—
Pressure regulating valve 1
(Receiver to discharge pipe)
This valve opens at a pressure of 2.0 to 2.7 MPa for prevention of pressure increase,
thus resulting in no damage of functional parts due to the increase of pressure in
transportation or storage.
1
R1T
Thermistor (Outdoor air: Ta)
Used to detect outdoor temperature, correct discharge pipe temperature, and others.
2
R2T
Thermistor (Suction pipe: Ts)
Used to detect suction pipe temperature, keep the suction superheated degree
constant in heating operation, and others.
3
R3T
Thermistor (INV discharge
pipe: Tdi)
Used to detect discharge pipe temperature, make the temperature protection control of
compressor, and others.
4
R4T
Thermistor (Heat exchanger
deicer: Tb)
Used to detect liquid pipe temperature of air heat exchanger, determine defrosting
operation, and others.
5
R5T
Thermistor (Subcooling heat
exchanger gas pipe: Tsh)
Used to detect gas pipe temperature on the evaporation side of subcooling heat
exchanger, keep the superheated degree at the outlet of subcooling heat exchanger
constant, and others.
Refrigerant Circuit
Capillary
tube
Filter
Low pressure
sensor
2
Filter
SP
5
Solenoid
valve
Solenoid
valve
Pressure
regulating valve
Oil
separator
3
Filter
Check
valve
Check
valve
Compressor
Filter
Heat
exchanger
pipe
Electronic
expansion valve
Electronic
expansion valve
Check
valve
Check
valve
HPS High pressure
switch
1
Stop valve (With service port on field piping side φ6.4mm flare connection)
Filter
High pressure SP
sensor
SV
Four way
valve
SV
Refrigerant Circuit
Receiver
4
Double pipe
heat exchanger
Filter
Heat exchanger
Service port
SiEBE18-526
Refrigerant Circuit
Refrigerant Circuit Diagram
(Q0371)
45
Refrigerant Circuit
1.2
SiEBE18-526
BPMKS 967 A2B, B2B, A3B, B3B
No. in
refrigerant
Symbol
system
diagram
Name
Major Function
A
EVU
Electronic expansion valve
(for operating room)
Among EVA, EVB and EVC, the electronic expansion valve of operating room is called
EVU.
B
EVT
Electronic expansion valve
(for stopping room)
Among EVA, EVB and EVC, the electronic expansion valve of stopping room is called
EVT.
C
EVH
Electronic expansion valve
(Bypass)
While in oil return operation, used to adjust the refrigerant circulating rate of indoor
unit.
1
DGA
~ DGC Thermistor (Gas pipe)
While in cooling operation, used to carry out the indoor unit SH control and cooling gas
pipe isothermal control.
2
DLA
~ DLC
Thermistor (Liquid pipe)
While in heating operation, used to carry out the indoor unit SC control.
3
R1T
Thermistor (Room temp.)
Used to detect room air temperature and instructs the capacity supply to BP unit.
4
R2T
Thermistor (Heat exchanger)
Used to detect heat exchanger temperature and carry out various protection functions
and controls of capacity.
5
R1T
Thermistor (Room temp.)
Used to detect room air temperature and instructs the capacity supply to BP unit.
6
R2T
Thermistor
(Heat exchanger 1)
Used to detect heat exchanger temperature and carry out various protection functions
and controls of capacity.
7
R3T
Thermistor
(Heat exchanger 2)
Used to detect heat exchanger temperature and carry out various protection functions
and controls of capacity.
3
1
4
2
RA indoor unit
EVH Filter
EVA
Filter
EVB
Filter
5
7
EVC
Filter
To
outdoor
unit
Filter
6
SA indoor unit
(Q0403)
46
Refrigerant Circuit
SiEBE18-526
Functional Parts Layout
2. Functional Parts Layout
2.1
RMXS 112/140/160 D7V3B
Birds-eye view
J
Y2S Solenoid valve
(Connector color : PINK)
N S1NPH
High pressure sensor
S1NPH
High pressure sensor lead wire
(Connector color : RED)
(Connector color : RED)
(Low voltage)
M Y3S Four way valve coil
O S1NPL
Low pressure sensor
(Connector color : BLUE)
R3T
Discharge pipe thermistor
lead wire
E
F
Y1E Electronic expansion valve
Y2E Electronic expansion valve
S1NPL
Low pressure sensor lead wire
(Connector color : BLUE)
(Low voltage)
Y1S Solenoid valve
(Connector color : WHITE)
Y3S Four way valve lead wire
(Connector color : BLUE)
(High voltage)
Y2S Solenoid valve lead wire
(Connector color : PINK)
(High voltage)
Y1S Solenoid valve lead wire
(Connector color : WHITE)
(High voltage)
E1HC Crankcase heater lead wire
(Connector color : GRAY)
(High voltage)
1P152123B
Refrigerant Circuit
47
48
CHECK
VALVE
CHECK
VALVE
FILTER
HEAT
EXCHANGER PIPE
EV2
ELECTRONIC
EXPANSION VALVE
EV1
ELECTRONIC
EXPANSION VALVE
FILTER
CHECK
VALVE
CHECK
VALVE
COMPRESSOR
HIGH PRESSURE
SWITCH
HPS
DISCHARGE
HEAT EXCHANGER PIPE
THERMISTOR
THERMISTOR
SVP
SVG
EV1
EV2
SVP
SVG
2000 pls
PI control
OFF
OFF
FILTER
LOW PRESSURE
SENSOR
SUCTION PIPE
THERMISTOR
CAPILLARY TUBE
FILTER
OIL
SEPARATOR
HIGH PRESSURE
SENSOR
SP
4-WAY VALVE
SUBCOOLING
HEAT EXCHANGER
THERMISTOR
LIQUID SEAL PROTECTION
CHECK VALVE
: High pressure liquid refrigerant
: High pressure high temp. gas refrigerant
: Low pressure low temp. liquid or gas refrigerant
DOUBLE PIPE
HEAT EXCHANGER
FILTER
DISTRIBUTOR
DC FAN
M
MOTOR
PROPELLER
FAN
DC FAN
M
MOTOR
OUTDOOR AIR
THERMISTOR
RECEIVER
LIQUID LINE
STOP VALVE
GAS LINE
STOP VALVE
FILTER
FILTER EVH
EVB : Full close
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM C)
LIQUID SIDE
EVC FILTER THERMISTOR(DLC)
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
ELECTRONIC
EXPANSION VALVE(ROOM A)
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
GAS SIDE
THERMISTOR(DGC)
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
EVA : SH control EVB : SH control EVC : Full close
FILTER
FILTER EVH
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM A)
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE(BYPASS)
EVA : Full close
FILTER
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
ELECTRONIC
EXPANSION VALVE(BYPASS)
FILTER EVH
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
ELECTRONIC
EXPANSION VALVE(ROOM A)
ELECTRONIC
EXPANSION VALVE(BYPASS)
EVA : SH control EVB : Full close
BP UNIT
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"ON"
FIELD PIPING
FIELD PIPING
"ON"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"ON"
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
(Q0406)
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
3.1
SP
OUTDOOR UNIT
Refrigerant Flow for Each Operation Mode
SiEBE18-526
3. Refrigerant Flow for Each Operation Mode
Cooling Operation
Refrigerant Circuit
Refrigerant Circuit
CHECK
VALVE
CHECK
VALVE
FILTER
HEAT
EXCHANGER PIPE
EV2
ELECTRONIC
EXPANSION VALVE
EV1
ELECTRONIC
EXPANSION VALVE
FILTER
CHECK
VALVE
CHECK
VALVE
COMPRESSOR
HIGH PRESSURE
SWITCH
HPS
DISCHARGE
HEAT EXCHANGER PIPE
THERMISTOR
THERMISTOR
SVP
SVG
EV1
EV2
SVP
SVG
PI control
Full close
OFF
OFF
FILTER
LOW PRESSURE
SENSOR
SUCTION PIPE
THERMISTOR
CAPILLARY TUBE
FILTER
OIL
SEPARATOR
HIGH PRESSURE
SENSOR
SP
4-WAY VALVE
SUBCOOLING
HEAT EXCHANGER
THERMISTOR
LIQUID SEAL PROTECTION
CHECK VALVE
: High pressure liquid refrigerant
: High pressure high temp. gas refrigerant
: Low pressure low temp. liquid or gas refrigerant
DOUBLE PIPE
HEAT EXCHANGER
FILTER
DISTRIBUTOR
DC FAN
M
MOTOR
PROPELLER
FAN
DC FAN
M
MOTOR
OUTDOOR AIR
THERMISTOR
RECEIVER
LIQUID LINE
STOP VALVE
GAS LINE
STOP VALVE
FILTER
FILTER EVH
EVB : 80 pls
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM C)
LIQUID SIDE
EVC FILTER THERMISTOR(DLC)
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
ELECTRONIC
EXPANSION VALVE(ROOM A)
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
GAS SIDE
THERMISTOR(DGC)
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
EVA : SC control EVB : SC control EVC : 80 pls
FILTER
FILTER EVH
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM A)
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE(BYPASS)
EVA : 80 pls
FILTER
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
ELECTRONIC
EXPANSION VALVE(BYPASS)
FILTER EVH
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
ELECTRONIC
EXPANSION VALVE(ROOM A)
ELECTRONIC
EXPANSION VALVE(BYPASS)
EVA : SC control EVB : 80 pls
BP UNIT
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"ON"
FIELD PIPING
FIELD PIPING
"ON"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"ON"
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
(Q0407)
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
3.2
SP
OUTDOOR UNIT
SiEBE18-526
Refrigerant Flow for Each Operation Mode
Heating Operation
49
50
CHECK
VALVE
CHECK
VALVE
FILTER
HEAT
EXCHANGER PIPE
EV2
ELECTRONIC
EXPANSION VALVE
EV1
ELECTRONIC
EXPANSION VALVE
FILTER
CHECK
VALVE
CHECK
VALVE
COMPRESSOR
HIGH PRESSURE
SWITCH
HPS
DISCHARGE
HEAT EXCHANGER PIPE
THERMISTOR
THERMISTOR
SVP
SVG
EV1
EV2
SVP
SVG
GAS LINE
STOP VALVE
LIQUID LINE
STOP VALVE
2000 pls
SH control
ON
OFF
FILTER
LOW PRESSURE
SENSOR
SUCTION PIPE
THERMISTOR
CAPILLARY TUBE
FILTER
OIL
SEPARATOR
HIGH PRESSURE
SENSOR
SP
4-WAY VALVE
SUBCOOLING
HEAT EXCHANGER
THERMISTOR
LIQUID SEAL PROTECTION
CHECK VALVE
: High pressure liquid refrigerant
: High pressure high temp. gas refrigerant
: Low pressure low temp. liquid or gas refrigerant
DOUBLE PIPE
HEAT EXCHANGER
FILTER
DISTRIBUTOR
DC FAN
M
MOTOR
PROPELLER
FAN
DC FAN
M
MOTOR
OUTDOOR AIR
THERMISTOR
RECEIVER
FILTER
FILTER EVH
EVB : 56 pls
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM C)
LIQUID SIDE
EVC FILTER THERMISTOR(DLC)
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
ELECTRONIC
EXPANSION VALVE(ROOM A)
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
GAS SIDE
THERMISTOR(DGC)
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
EVH : SH control
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
EVA : SH control EVB : SH control EVC : 56 pls
FILTER
FILTER EVH
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM A)
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE(BYPASS)
EVA : 56 pls
FILTER
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
ELECTRONIC
EXPANSION VALVE(BYPASS)
FILTER EVH
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
ELECTRONIC
EXPANSION VALVE(ROOM A)
ELECTRONIC
EXPANSION VALVE(BYPASS)
EVA : SH control EVB : 56 pls
BP UNIT
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"ON"
FIELD PIPING
FIELD PIPING
"ON"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"ON"
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
(Q0408)
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
3.3
SP
OUTDOOR UNIT
Refrigerant Flow for Each Operation Mode
SiEBE18-526
Cooling Oil Return Operation
Refrigerant Circuit
Refrigerant Circuit
CHECK
VALVE
CHECK
VALVE
FILTER
HEAT
EXCHANGER PIPE
EV2
ELECTRONIC
EXPANSION VALVE
EV1
ELECTRONIC
EXPANSION VALVE
FILTER
CHECK
VALVE
CHECK
VALVE
COMPRESSOR
HIGH PRESSURE
SWITCH
HPS
DISCHARGE
HEAT EXCHANGER PIPE
THERMISTOR
THERMISTOR
SVP
SVG
EV1
EV2
SVP
SVG
LIQUID LINE
STOP VALVE
GAS LINE
STOP VALVE
SH control → 2000 pls → 200~400 pls
Full close
OFF → ON
ON → OFF → ON → OFF
FILTER
LOW PRESSURE
SENSOR
SUCTION PIPE
THERMISTOR
CAPILLARY TUBE
FILTER
OIL
SEPARATOR
HIGH PRESSURE
SENSOR
SP
4-WAY VALVE
SUBCOOLING
HEAT EXCHANGER
THERMISTOR
LIQUID SEAL PROTECTION
CHECK VALVE
: High pressure liquid refrigerant
: High pressure high temp. gas refrigerant
: Low pressure low temp. liquid or gas refrigerant
DOUBLE PIPE
HEAT EXCHANGER
FILTER
DISTRIBUTOR
DC FAN
M
MOTOR
PROPELLER
FAN
DC FAN
M
MOTOR
OUTDOOR AIR
THERMISTOR
RECEIVER
FILTER
FILTER EVH
EVB : 80 pls
EVC : Full close
ELECTRONIC
EXPANSION VALVE(ROOM C)
LIQUID SIDE
EVC FILTER THERMISTOR(DLC)
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
ELECTRONIC
EXPANSION VALVE(ROOM A)
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
GAS SIDE
THERMISTOR(DGC)
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
EVH : SH control
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
EVA : SH control EVH : SH control EVB : 80 pls
FILTER
FILTER EVH
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
EVH : Full close
ELECTRONIC
EXPANSION VALVE(ROOM A)
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE(BYPASS)
EVA : 80 pls
FILTER
LIQUID SIDE
EVA FILTER THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE(ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
ELECTRONIC
EXPANSION VALVE(BYPASS)
FILTER EVH
GAS SIDE
THERMISTOR(DGB)
GAS SIDE
THERMISTOR(DGA)
ELECTRONIC
EXPANSION VALVE(ROOM A)
ELECTRONIC
EXPANSION VALVE(BYPASS)
EVA : SH control EVB : 80 pls
BP UNIT
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"ON"
FIELD PIPING
FIELD PIPING
"ON"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"OFF"
FIELD PIPING
FIELD PIPING
"ON"
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
FAN MOTOR
M
SIRROCO FAN
(Q0409)
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
HEAT
EXCHANGER
THERMISTOR
HEAT EXCHANGER
3.4
SP
OUTDOOR UNIT
SiEBE18-526
Refrigerant Flow for Each Operation Mode
Heating Oil Return Operation & Defrost Operation
51
Refrigerant Flow for Each Operation Mode
52
SiEBE18-526
Refrigerant Circuit
SiEBE18-526
Part 5
Function
1. Operation Mode ....................................................................................54
2. Basic Control.........................................................................................55
2.1
2.2
2.3
2.4
Normal Operation ...................................................................................55
Compressor PI Control...........................................................................56
Electronic Expansion Valve PI Control...................................................59
Cooling Operation Fan Control...............................................................60
3. Special Control......................................................................................61
3.1
3.2
3.3
3.4
3.5
3.6
3.7
Startup Control .......................................................................................61
Oil Return Operation ..............................................................................62
Defrosting Operation ..............................................................................64
Pump-down Residual Operation ............................................................65
Restart Standby......................................................................................65
Stopping Operation ................................................................................66
Pressure Equalization Prior to Startup ...................................................66
4. Protection Control .................................................................................67
4.1
4.2
4.3
4.4
4.5
4.6
High Pressure Protection Control...........................................................67
Low Pressure Protection Control............................................................69
Discharge Pipe Protection Control .........................................................70
Inverter Protection Control .....................................................................71
Freeze-up Protection Control .................................................................72
Dew Condensation Prevention Control ..................................................73
5. Other Control.........................................................................................74
5.1 Demand Operation .................................................................................74
5.2 Heating Operation Prohibition ................................................................74
6. BP Unit Control .....................................................................................75
6.1
6.2
6.3
6.4
6.5
BP Unit Command Conversion ..............................................................75
BP Unit Electronic Expansion Valve Control ..........................................76
SH Control in Cooling Operation ............................................................78
SC Control in Heating Operation............................................................79
Heat Exchanger Isothermal Control in Heating Operation .....................79
7. Indoor Unit (RA Models)........................................................................80
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..........80
Fan Speed Control for Indoor Units........................................................81
Programme Dry Function .......................................................................82
Automatic Operation...............................................................................83
Thermostat Control.................................................................................84
Night Set Mode.......................................................................................85
ECONO Mode ........................................................................................86
INTELLIGENT EYE ................................................................................87
HOME LEAVE Operation .......................................................................89
Inverter POWERFUL Operation .............................................................90
Other Functions......................................................................................91
8. Indoor Unit (SkyAir Models) ..................................................................93
8.1 Function Outline .....................................................................................93
8.2 Electric Function Parts ...........................................................................94
8.3 Function Details......................................................................................95
Function
53
Operation Mode
SiEBE18-526
1. Operation Mode
Operation in
stop mode
Indoor unit stop or
thermostat OFF
Indoor unit thermostat ON
Malfunction/Standby
Restart standby
(Compressor stop)
Pressure
equalization
prior to startup
Malfunction/
Standby
Indoor unit stop or
thermostat OFF
Startup control
• Cooling startup
control
• Heating startup
control
Indoor unit thermostat ON
without mode change
Pump-down
residual
operation
Malfunction/Standby
Indoor unit stop or
thermostat OFF
Normal operation
• Compressor PI control
• Electronic expansion
valve PI control
• Protection control
Cooling or heating
operation
BP unit
cooling: SH control
heating: SC control
Oil return IN
conditions are met.
Malfunction/
Standby
Yes
Oil return operation
No
Defrost IN
conditions are met.
Yes
Defrosting operation
No
Operation
mode change
No
Yes
Note:
In the event indoor unit stops or the thermostat
turns OFF while in oil return operation or
defrosting operation, pump-down residual
operation is performed on completion of the oil
return operation or defrosting operation.
(Q0372)
54
Function
SiEBE18-526
Basic Control
2. Basic Control
2.1
Normal Operation
„ Cooling Operation
Actuator
Operation
Compressor
Compressor PI control
Outdoor unit fan
Four way valve
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV2)
Cooling fan control
OFF
2000 pls
Remarks
Used for high pressure protection control, low
pressure protection control, discharge pipe
temperature protection control, compressor
operating frequency upper limit control with
inverter protection control, dew prevention control,
and freeze-up protection control.
⎯
⎯
⎯
PI control
⎯
Hot gas bypass valve (SVP)
OFF
Receiver gas discharging valve (SVG)
BP unit electronic expansion valve
(operating room)
BP unit electronic expansion valve
(stopping room)
OFF
SH control
This valve turns on with low pressure protection
control.
This valve turns on with dew prevention control.
⎯
0 pls
⎯
„ Heating Operation
Actuator
Operation
SC control
Remarks
Used for high pressure protection control, low
pressure protection control, discharge pipe
temperature protection control, and compressor
operating frequency upper limit control with
inverter protection control.
The fan step changes to STEP1 with high pressure
> 3.2MPa.
⎯
⎯
The opening of this valve changes with high
pressure > 3.2MPa.
This valve turns on with low pressure protection
control.
—
⎯
80 pls
The opening of this valve changes with insufficient
gas control.
Compressor
Compressor PI control
Outdoor unit fan
STEP8
Four way valve
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV2)
ON
PI control
Hot gas bypass valve (SVP)
OFF
Receiver gas discharging valve (SVG)
BP unit electronic expansion valve
(operating room)
BP unit electronic expansion valve
(stopping room)
OFF
0 pls
HHeating operation is not functional at an outdoor air temperature of 30°CDB or more.
Function
55
Basic Control
2.2
SiEBE18-526
Compressor PI Control
Compressor PI Control
Carries out the compressor capacity PI control to maintain Te at constant during cooling
operation and Tc at constant during heating operation to ensure stable unit performance.
[Cooling operation]
Controls compressor capacity to adjust Te to
achieve target value (TeS).
TeS initial value
M (Normal)
Condition
L
H
(factory setting)
∆D up
3
6
9
∆D keep
12
12
12
∆D down
12
12
13
Te : Low pressure equivalent saturation
temperature (°C)
TeS : Target Te value
(Varies depending on Te setting, operating
frequency, etc.)
Te changes corresponding to the capacity which indoor units require the above as the initial
value. (However -7 ≤ Te ≤ 15)
[Heating operation]
Controls compressor capacity to adjust Tc to
achieve target value (TcS).
TcS initial value
L
M (Normal)
H
(factory
setting)
43
46
49
Tc : High pressure equivalent saturation
temperature (°C)
TcS : Target Tc value
(Varies depending on Tc setting, operating
frequency, etc.)
Tc changes corresponding to the capacity which indoor units require the above as the initial
value. (However 42 ≤ Tc ≤ 51)
RMXS112 · 140 · 160D
STEP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
INV
52Hz
57Hz
62Hz
68Hz
74Hz
80Hz
86Hz
92Hz
98Hz
104Hz
111Hz
118Hz
124Hz
129Hz
134Hz
STEP
16
17
18
19
20
21
22
23
24
25
INV
140Hz
146Hz
152Hz
158Hz
164Hz
170Hz
175Hz
180Hz
185Hz
190Hz
∗ Compressors may operate in a pattern other than those listed in above tables subject to the operating conditions.
56
Function
SiEBE18-526
∆D Control
Basic Control
Receiving the capacity request signal from the indoor unit, the outdoor unit corrects its target
pressure for capacity control.
Controls ∆D signal from indoor unit as follows.
UP control :
When the UP command come from more than one indoor unit among
thermostat-ON indoor units.
Down control: When the down command come from all indoor units among thermostat-ON
indoor units.
Keep control: Except for the above
About detail of ∆D signal, refer to P75
Cooling Operation
TeS = TeS initial value + KTe2
KTe2 : Correction value by ∆D signal in cooling.
KTe2 = 0
(without correction)
During compressor frequency PI
control (KTe2 = 0)
Not during compressor frequency PI
control
∆ D control
Keep the current KTe2
KTe2 = KTe2 – 0.5
Up control by ∆ D signal
continues 120 sec.
KTe2 = KTe2 + 0.5
Down control by ∆ D signal
continues 120 sec.
(Q0396)
Function
57
Basic Control
SiEBE18-526
Heating Operation
TcS = TcS initial value + KTc2
KTc2 : Correction value by ∆D signal in heating.
KTc2 = 0
(without correction)
During compressor frequency PI
control (KTc2 = 0)
Not during compressor frequency PI
control
∆ D control
Keep the current KTc2
KTc2 = KTc2 + 0.5
Up control by ∆ D signal
continues 120 sec.
KTc2 = KTc2 - 0.5
Down control by ∆ D signal
continues 120 sec.
(Q0397)
58
Function
SiEBE18-526
2.3
Basic Control
Electronic Expansion Valve PI Control
Main Electronic Expansion Valve EV1 Control
Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet
superheated degree (SH) at constant during heating operation to make maximum use of the
outdoor unit heat exchanger (evaporator).
SH = Ts - Te
SH : Evaporator outlet superheated degree (°C)
Ts : Suction pipe temperature detected by thermistor
R2T (°C)
Te : Low pressure equivalent saturation temperature
(°C)
The optimum initial value of the evaporator outlet superheated degree is 5°C, but varies
depending on the discharge pipe superheated degree of inverter compressor.
Subcooling Electronic Expansion Valve EV2 Control
Makes PI control of the electronic expansion valve (Y2E) to keep the superheated degree (SH)
of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger.
SH = Tsh -Te
Function
SH : Outlet superheated degree of evaporator (°C)
Tsh : Suction pipe temperature detected with the
thermistor R5T (°C)
Te : Low pressure equivalent saturation temperature
(°C)
59
Basic Control
2.4
SiEBE18-526
Cooling Operation Fan Control
In cooling operation with low outdoor air temperature, this control is used to provide the
adequate amount of circulation air with liquid pressure secured by high pressure control using
outdoor unit fan.
Outline
In cooling operation fan control, outdoor unit fans are controlled by PI control to come the
cooling Tc to 34°C.
However in normal operation, the fan control restricts lower limit of the number of rotations
according to outdoor air temperature.
Lower Limit Restriction for Cooling Operation Fan Control
Lower limit
STEP7
Ta≤17ºC
Ta≥20ºC
Lower limit
STEP5
Ta≤15ºC
Ta≥18ºC
Lower limit
STEP1
Ta≤9ºC
Ta≥12ºC
No limitation
Ta: Outdoor air temperature
Fan Steps
Cooling
M1F
M2F
STEP0
0 rpm
0 rpm
STEP1
250 rpm
0 rpm
STEP2
400 rpm
0 rpm
STEP3
285 rpm
250 rpm
STEP4
360 rpm
325 rpm
STEP5
445 rpm
410 rpm
STEP6
580 rpm
545 rpm
STEP7
715 rpm
680 rpm
STEP8
850 rpm
815 rpm
Heating
M1F
M2F
STEP1
250 rpm
0 rpm
STEP8*
850 rpm
815 rpm
Reference
There are 2 steps in heating operation.
* Depends on models
(Q0373)
60
Function
SiEBE18-526
Special Control
3. Special Control
3.1
Startup Control
On activation, following control is performed to lighten load of the compressor by back liquid and
the like. Also, the position of the four way valve is defined.
3.1.1 Startup Control in Cooling Operation
Actuator
Operation
Compressor
Differential pressure control
Outdoor unit fan
High pressure control
Four way valve
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve (SVG)
OFF
2000 pls
Remarks
Compressor operating frequency
increases by 2 step / 20 sec until
Pc - Pe>0.4 MPa.
Initial fan speed is set to STEP 0
(Ta<20°C), or STEP 7 (Ta≥).
⎯
⎯
0 pls
⎯
ON
OFF
⎯
⎯
Ending conditions
or
BP unit electronic expansion valve
(operating room)
BP unit electronic expansion valve
(stopping room)
0 pls
⎯
0 pls
⎯
• 255 sec.
• Pc - Pe>0.4 MPa
&( • 75 sec
3.1.2 Startup Control in Heating Operation
Actuator
Compressor
Differential pressure control
Outdoor unit fan
Four way valve
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve (SVG)
STEP8
ON
180 pls
Remarks
Compressor operating frequency
increases by 2 step / 20 sec until
Pc - Pe>0.4 MPa.
⎯
⎯
⎯
0 pls
⎯
ON
ON
⎯
⎯
Ending conditions
or
BP unit electronic expansion valve
(operating room)
BP unit electronic expansion valve
(stopping room)
0 pls
⎯
0 pls
⎯
Function
Operation
• 225 sec.
• Pc - Pe>0.4 MPa
&( • 40 sec
61
Special Control
3.2
SiEBE18-526
Oil Return Operation
Oil flown from the compressor to the side of system is collected by oil-returning operation, in
case of that oil in the compressor runs down.
3.2.1 Oil Return Operation in Cooling Operation
[Conditions to start]
The cooling oil-returning operation is started referring following conditions.
„ Integrated amount of displaced oil
„ Timer
(After the power is turned on, integrated operating-time is 2 hours and subsequently every 8
hours.)
In addition, integrated amount of displaced oil is derived from Tc, Te, and the compressor
load.
Outdoor unit actuator
Compressor
Outdoor unit fan
Four way valve
Main electronic expansion valve
(EV1)
Subcooling electronic expansion
valve (EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve
(SVG)
Ending conditions
Oil return preparation
operation
Upper limit control
Fan control
OFF
124 Hz
Fan control
OFF
124 Hz
Fan control
OFF
2000 pls
2000 pls
2000 pls
SH control
0 pls
0 pls
OFF
ON
ON
OFF
OFF
OFF
20 sec.
or
Indoor actuator
Thermostat ON unit
Indoor unit fan
Stopping unit
Thermostat OFF unit
Thermostat ON unit
BP unit electronic expansion
Stopping unit
valve
Thermostat OFF unit
62
Oil return operation
• 6 min.
• Ts - Te<5
Post-oil-return operation
3 min.
Cooling oil return operation
Set Air Volume
OFF
Set Air Volume
SH control
56 pls
SH control
Function
SiEBE18-526
Special Control
3.2.2 Oil Return Operation in Heating Operation
[Conditions to start]
The heating oil-returning operation is started referring following conditions.
Š Integrated amount of displaced oil
Š Timer
(After the power is turned on, integrated operating-time is 2 hours and subsequently every 8
hours.)
In addition, integrated amount of displaced oil is derived from Tc, Te, and the compressor
load.
Outdoor Unit Actuator
Oil return preparation
operation
Oil return operation
Post-oil-return operation
Compressor
Upper limit control
124 Hz
Outdoor unit fan
Four way valve
Main electronic expansion valve
(EV1)
Subcooling electronic expansion
valve (EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve
(SVG)
STEP8
ON
High pressure control
OFF
2-step increase from
52 Hz to
(Pc - Pe>0.4 MPa) time
STEP8
ON
SH control
2000 pls
200~400 pls
0 pls
0 pls
0 pls
OFF
ON
ON
ON → OFF
ON → OFF
ON → OFF
130 sec.
or
Ending conditions
• Max. 735 sec.
• Ts - Te<5
or
• 160 sec.
• Pc - Pe>0.4MPa
* From the preparing oil-returning operation to the oil-returning operation, and from the oilreturning operation to the operation after oil-returning, the compressor stops for 1 minute to
reduce noise on changing of the four way valve.
Indoor actuator
Thermostat ON unit
Indoor unit fan
Stopping unit
Thermostat OFF unit
Thermostat ON unit
BP unit electronic expansion
Stopping unit
valve
Thermostat OFF unit
Function
Heating oil return operation
OFF
OFF
OFF
SH control
80 pls
SH control
63
Special Control
3.3
SiEBE18-526
Defrosting Operation
The defrost operation is performed to solve frost on the outdoor unit heat exchanger when
heating, and the heating capacity is recovered.
[Conditions to start]
The defrost operation is started referring following conditions.
Š Outdoor heat exchanger heat transfer co-efficiency
Š Temperature of heat-exchange (Tb)
Š Low pressure equivalent saturation temperature (Te)
Š Timer (2 hours at the minimum)
In addition, outdoor heat-exchange co-efficiency is derived from Tc, Te, and the compressor
load.
Outdoor unit actuator
Defrost preparation
operation
Defrost operation
Post Defrost operation
Compressor
Upper limit control
140 Hz
Outdoor unit fan
Four way valve
Main electronic expansion valve
(EV1)
Subcooling electronic expansion
valve (EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve
(SVG)
STEP8
ON
OFF
OFF
2-step increase from
52 Hz to
(Pc - Pe>0.4 MPa)
every 20 sec.
STEP8
ON
SH control
2000 pls
200~400 pls
0 pls
0 pls
0 pls
OFF
ON
ON
ON → OFF
ON → OFF
ON → OFF
130 sec.
or
Ending conditions
• Max. 18 min.
• Tb >11°C
or
• 160 sec.
• Pc - Pe>0.4MPa
* From the preparing operation to the defrost operation, and from the defrost operation to the
operation after defrost, the compressor stops for 110 sec. to reduce noise on changing of the
four way valve.
Indoor actuator
Thermostat ON unit
Indoor unit fan
Stopping unit
Thermostat OFF unit
Thermostat ON unit
BP unit electronic expansion
Stopping unit
valve
Thermostat OFF unit
64
During defrost
OFF
OFF
OFF
SH control
80 pls
SH control
Function
SiEBE18-526
3.4
Special Control
Pump-down Residual Operation
When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid
enters into the compressor and dilutes oil therein resulting in decrease of lubricity.
Therefore, the pump-down residual operation is performed to collect the refrigerant in the heatexchanger when the compressor is down.
3.4.1 Pump-down Residual Operation in Cooling Operation
Actuator
Outdoor unit operation
Compressor
Outdoor unit fan
Four way valve
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve (SVG)
124 Hz
Fan control
OFF
2000 pls
Ending conditions
or
0 pls
OFF
ON → OFF
• 30 sec.
• Pe<0.5 MPa
• Td>110°C
3.4.2 Pump-down Residual Operation in Heating Operation
Actuator
Outdoor unit operation
Compressor
Outdoor unit fan
Four way valve
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve (SVG)
52 → 124 Hz
STEP8
ON
0 pls
Ending conditions
or
3.5
0 pls
ON → OFF
ON → OFF
• 3 min.
• Pe<0.25 MPa
• Td>110°C
Restart Standby
Restart is stood by force to prevent frequent power-on/off and to equalize pressure in the
refrigerant system.
Actuator
Compressor
Outdoor unit fan
Four way valve
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve (SVG)
Ending conditions
Function
Operation
Remarks
OFF
OFF
Keep former condition.
0 pls
⎯
⎯
⎯
⎯
0 pls
⎯
OFF → ON
OFF
5 min.
⎯
⎯
⎯
65
Special Control
3.6
SiEBE18-526
Stopping Operation
3.6.1 When System is in Stop Mode
Actuator
Operation
Compressor
Outdoor unit fan
Four way valve
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve (EV2)
OFF
OFF
Keep former condition.
0 pls
0 pls
OFF
OFF
Indoor unit thermostat is turned ON.
Hot gas bypass valve (SVP)
Receiver gas discharging valve (SVG)
Ending conditions
3.7
Pressure Equalization Prior to Startup
Before activating the compressor, the activation load is lightened by equalization across the
compressor. In addition, inverters turn on electricity and capacitors are charged.
Actuator
Compressor
Outdoor unit fan
Four way valve
Main electronic expansion valve
(EV1)
Subcooling electronic expansion
valve (EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve
(SVG)
Ending conditions
66
Operation
Remarks
OFF
Cooling: STEP7
Heating: Ta>26°C; STEP8,
Ta≤26°C; OFF
Keep former condition.
—
0 pls
—
0 pls
—
ON
—
OFF
—
or
• • 3 min.
• • Pc-Pe<0.2 MPa
—
—
—
Function
SiEBE18-526
Protection Control
4. Protection Control
4.1
High Pressure Protection Control
This high pressure protection control is used to prevent the activation of protection devices due
to abnormal increase of high pressure and to protect compressors against the transient
increase of high pressure.
In cooling operation
Pc>3.55MPa
High pressure not limited
Pc: HP pressure sensor detection value
& • INV upper limit frequency
• Pc ≤ 3.55MPa
or
• During oil return operation
• After oil return operation
• Stopping operation
• Heating operation
High pressure limited
INV upper limit frequency :
1-step down from current
compressor frequency
Every 10 sec.
Pc>3.6MPa
Keeping the current step
Pc<3.45MPa
Every 60 sec.
3.45MPa<Pc≤3.55MPa
Every
5 min.
INV upper limit frequency:
1-step up from current
compressor frequency
INV upper limit frequency:
1-step up from current
compressor frequency
Pc>3.75MPa
High pressure
standby
Function
When occurring 3 times within 30
minutes, HPS is activated without high
pressure standby, thus outputting the
malfunction code "E3".
(Q0374)
67
Protection Control
SiEBE18-526
In heating operation
High pressure not limited
&
&
• During heating normal operation
• Not during oil return operation
• Not after oil return operation
• Not during defrost operation
• Not after defrost operation
• Pc>3.10MPa
or
• INV upper limit frequency
• Pc≤2.95MPa
• During oil return operation
• After oil return operation
• During defrost operation
• After defrost operation
• Cooling operation
• During pump-down residual operation
&
• Increase the operating room
• Pc<3.00MPa
High pressure limited
INV upper limit frequency:
1-step down from current
compressor frequency
Every 10 sec.
Pc>3.10MPa
Overload control in
heating
Keeping the current step
Pc>3.20MPa
Pc<3.00MPa
Every 60 sec.
INV upper limit frequency:
1-step up from current
compressor frequency
(Q0375)
68
Function
SiEBE18-526
4.2
Protection Control
Low Pressure Protection Control
This low pressure protection control is used to protect compressors against the transient
decrease of low pressure.
In cooling operation
Low pressure not limited
Pe<0.25MPa
Pe: LP pressure sensor detection
value
Pe>0.4MPa
Low pressure
limited
SVP=OFF
Pe<0.15MPa
Pe>0.30MPa
52Hz
SVP=ON
Pe<0.07MPa
Low pressure
standby
When occurring 3 times within 60 min.,
the malfunction code "E4" is output.
(Q0376)
In heating operation
Pe: LP pressure sensor detection
value
• Pe>0.25MPa
& • INV upper limit
frequency
Low pressure not limited
Pe<0.16MPa
Low pressure limited
&
More than 124Hz
Pe<0.16MPa
Upper limit:
124Hz
Pe<0.13MPa
Pe<0.13MPa
Upper limit:
52Hz
Pe>0.19MPa
Upper limit: 1-step up from
current compressor frequency
Pe>0.19MPa (every 20 sec.)
Pe>0.17MPa
SVP = OFF
SVP = ON
Pe<0.10MPa
Pe< 0.07MPa
Low pressure
standby
When occurring 3 times within 60 min.,
the malfunction code "E4" is output.
(V3176)
Function
69
Protection Control
4.3
SiEBE18-526
Discharge Pipe Protection Control
This discharge pipe protection control is used to protect the compressor internal temperature
against a malfunction or transient increase of discharge pipe temperature.
INV compressor
HTdi: Value of INV compressor discharge pipe
temperature (Tdi) compensated with
outdoor air temperature
Tp: Value of compressor port temperature
calculated by Tc and Te, and suction
superheated degree.
Discharge pipe protection control not limited
&
or
• HTdi>105°C
• Tp>130°C
&
• Not during defrost operation
(preparation ~ post operation)
• Not during oil return operation in heating
(preparation ~ post operation)
• Not during oil return operation in cooling
(without preparation and post opeation)
or
• HTdi<95°C
• Tp<100°C
• Defrost operation
(preparation ~ post operation)
• Oil return operation in heating
(preparation ~ post operation)
• Oil return operation in cooling
(without preparation and post operation)
In discharge pipe protection control
INV upper limit frequency:
1-step up from current
compressor frequency
INV frequency 1-step down from
current compressor frequency
(lower limit: 52Hz)
30 sec.
or
• HTdi>110°C
• Tp>130°C
Cooling: 20 sec.
Heating: 60 sec.
&
• HTdi<100°C
• Tp<115°C
Keep the current step
Exclusion of
the right
conditions
or
• HTdi>130°C
• HTdi>115°C for 90sec. or more
• Tp>140°C
Fix INV frequency 52Hz
or
HTdi>135°C
HTdi>115°C for 10 min. or more.
Discharge pipe
temp. control standby
When occurring 3 times within 100 minutes,
the malfunction code "F3" is output.
(V3177)
70
Function
SiEBE18-526
4.4
Protection Control
Inverter Protection Control
Inverter current protection control and inverter fin temperature control are performed to prevent
tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase.
Inverter overcurrent protection control
Not limited
&
Inverter current>23.8A
• Inverter current≤23.8A
• INV upper limit frequency
Limited
INV upper limit frequency:
1-step down from current
compressor frequency
• 10 sec.
& • Matching of frequency
Inverter current>23.8A
Status quo
Inverter current ≤ 23.8A
continues for 3 min.
Without conditions
INV upper limit frequency:
1-step up from current
compressor frequency
Inverter current ≥ 24.9A
• When occurring 3 times within 60 min.,
the malfunction code "L8" is output.
• When occurring 3 times within 30 min.,
the malfunction code ""L9" is output
Inverter current
standby
(V3178)
Inverter fin temperature control
Not limited
&
Tfin≥93°C
• Tfin≤90°C
• INV upper limit frequency
Limited
INV upper limit frequency:
1-step down from current
compressor frequency
&
Tfin≥93°C
• 10 sec.
• Matching of frequency
Status quo
Tfin≤90°C
continues for 3 min.
Without conditions
INV upper limit frequency:
1-step up from current
compressor frequency
Tfin≥99°C
Fin temp. standby
• When occurring 3 times within 60 min.,
the malfunction code "L4" is output.
(Q0377)
Function
71
Protection Control
4.5
SiEBE18-526
Freeze-up Protection Control
Outline
According to the freeze prevention status sent from the BP unit. The compressor output
frequency is regulated to decrease the compressor capacity in order to prevent the indoor heat
exchanger from freezing.
Detail
Zones are produced based on the freeze prevention status signal sent from the BP unit (Indoor
unit), and the freeze prevention control prevents freezing of the indoor unit.
°C
Indoor unit heat exchanger
temperature
13
7
5
3
0
Recovery zone
Increase zone
Keep zone
Decrease zone
Stop zone
Recovery zone: Lift the control
Increase zone: 1 step up/60sec.
Keep zone: Frequency is not controlled
Decrease zone: 1 step down/60sec.
Stop zone: Thermostat-OFF (only the target indoor unit)
The temperature in above figure depends on models. (Reference value)
72
Function
SiEBE18-526
4.6
Protection Control
Dew Condensation Prevention Control
Outline
According to the dew condensation prevention status sent from the BP unit. The compressor
output frequency is regulated to decrease the compressor capacity in order to prevent the
indoor unit from dew condensation.
Detail
Zones are produced based on the dew condensation prevention status signal sent from the BP
unit (Indoor unit), and the dew condensation prevention control prevents dew condensation of
the indoor unit.
Indoor unit heat exchanger
temperature
°C
14.5
13
12.5
12
Recovery zone
Increase zone
Keep zone
Decrease zone
Recovery zone: Lift the control
Increase zone: 1 step up/60sec.
Keep zone: Frequency is not controlled
Decrease zone: 1 step down/60sec. SVG open at 52Hz
The temperature in above figure depends on models and actual room temperature. (Reference
value)
Function
73
Other Control
SiEBE18-526
5. Other Control
5.1
Demand Operation
In order to save the power consumption, the capacity of outdoor unit is saved with control
forcibly by using “Demand 1 Setting” or “Demand 2 Setting”.
To operate the unit with this mode, additional setting of “Continuous Demand Setting” or
external input by external control adaptor is required.
[Demand 1 setting]
Setting
Demand 1 setting 1
Demand 1 setting 2 (factory setting)
Demand 1 setting 3
Standard for upper limit of power consumption
Approx. 60%
Approx. 70%
Approx. 80%
[Demand 2 setting]
Setting
Demand 2 setting 1
Demand 2 setting 2 (factory setting)
Demand 2 setting 3
Standard for upper limit of power consumption
Approx. 30%
Approx. 40%
Approx. 50%
H Other protection control functions have precedence over the above operation.
5.2
Heating Operation Prohibition
Heating operation is prohibited above 30°CDB outdoor air temperature.
74
Function
SiEBE18-526
BP Unit Control
6. BP Unit Control
6.1
BP Unit Command Conversion
1. ∆D (room temperature − temperature setting) signals from BP units are converted to
capacity up / down signal.
∆D signals from BP units are used as the capacity up / down signal in frequency commands
(excludes when Powerful function is in operation).
∆D Signal
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Capacity up / down signal
Thermostat OFF
Down
Keep
Up
2. Processing during Powerful operation mode
(1) When Powerful command is received from indoor units (one or more units)
(2) Thermostats are not OFF in room units from which Powerful commands are issued
When the above conditions are met, the Powerful operation mode is activated, and the
Powerful operation signal is sent to outdoor unit.
Function
75
BP Unit Control
6.2
SiEBE18-526
BP Unit Electronic Expansion Valve Control
Purpose of the
Function
This function provides instructions regarding the absolute flow rate, relative flow rate and fully
closing from the outdoor unit to the BP unit in order to ensure outdoor unit compressor safety
and optimum refrigerating cycle of the system.
With the transmission a permit/prohibit flag for each distribution control in the BP unit, the
distribution control startup timing is controlled by the outdoor unit.
6.2.1 Electronic Expansion Valve Initial Opening Setting
Outline
This function improves stability of the system to set initial opening of electronic expansion valve
at starting operation.
When the EV opening command from outdoor unit is lifted, the following opening setting is
performed.
During Cooling
Operation
Target EV opening = 2.5 × (DA - 14) + P5 - KEVOPC × (DOA - DA) pls
DA: room temperature, DOA: outdoor air temperature
P5:
KEVOPC:
Indoor unit capacity
P5
KEVOPC
2.0 to 3.5 kW class
140
DOA≤DA
0
5.0 kW class
156
DA<DOA
2.5
6.0, 7.1 kW class
170
During Heating
Operation
Target EV opening = 350 pls
6.2.2 Electronic Expansion Valve Flow Rate Restriction
This function prevents the deviation from the electronic expansion valve specification range by
restricting the electronic expansion valve flow rates of the operating and non-operating room
units during compressor operation. It also prevents the generation of abnormal noise such as
refrigerant flowing sound by restricting the circulation of refrigerant according to the operating
conditions (unit ON/OFF) of room units.
Outline
76
Restriction of electronic expansion valve opening degrees of operating room units;
... Restriction of maximum and minimum flow rates based on constant
Restriction of electronic expansion valve opening degrees of non-heating room units;
... Restriction of minimum flow rate based on constant
... Maximum flow rate determined based on flow rates of operating room units
Function
SiEBE18-526
BP Unit Control
6.2.3 Full Closing of Electronic Expansion Valves
Purpose of the
Function
The electronic expansion valves are initialized when the power is turned on.
Details
The following processes are conducted.
1. Conducts P1 pulses close when power is turned on, and sets current opening to 0 pulse
(fully closing process).
2. Sends electronic expansion valve initialization signal to outdoor unit.
3. Closes the electronic expansion valve of each chamber (sets the electronic expansion valve
pulse to 0).
4. Stops transmission of electronic expansion valve initialization signal when EVH retightening
is completed.
Power ON
P1
EVA
0
P1
EVB
0
P1
EVC
0
P1
EVH
0
(M1047)
6.2.4 Control Based on EV Opening Command from Outdoor Unit
Purpose of the
Function
This function operates the electronic expansion valve based on EV opening command sent from
the outdoor unit.
Outline
The electronic expansion valve operation based on EV opening command provides the
following functions.
1) Pressure equalization prior to startup
2) Startup control
3) Restart standby
4) Pump-down residual operation
5) Oil return operation
6) Defrost operation
Function
77
BP Unit Control
6.3
SiEBE18-526
SH Control in Cooling Operation
Purpose of the
Function
This function ensures appropriate refrigerant distribution when many room units are operating in
the cooling mode.
Outline
The heat exchanger temperatures and gas pipe temperatures of operating room units are
detected by the gas pipe thermistors, and the electronic expansion valves' flow rates are
corrected so as to adjust the difference between heat exchanger temperature and gas pipe
temperature of each room unit (hereafter referred to as SH) close to the target values.
When SH is higher than target value → Opens the valve of that room unit
When SH is lower than target value → Closes the valve of that room unit
When the liquid pipe temperature is lower than the heat exchanger temperature, the electronic
expansion valve is opened more than normal opening.
(Protection function to prevent rotor dew condensation)
The gas pipe temperature and indoor heat exchanger temperature are detected at the time of
every sampling time of 40 sec for the cooling SH control.
In order to prevent dew condensation in connection pipe, gas pipe lower-limit temperature is set
as follows.
240
Gas pipe lower-limit temperature =
× DOA - 17 (however 8ºC or lower)
256
DOA:Outdoor air temperature
12
Gas pipe lower-limit temperature
10
8
6
4
2
0
-20
0
20
40
60
Outdoor air temperature
(Q0378)
Outdoor Temperature Gas Pipe Lower-Limit Temperature
-5
0
5
10
15
20
25
30
35
40
45
78
-22
-17
-12
-6
-1
4
8
8
8
8
8
Function
SiEBE18-526
BP Unit Control
Note:
6.4
1. In Sky Air models, the indoor units are equipped with distribution capillary tubes ; therefore,
the heat exchangers may superheat even when the condition is met.
2. In Sky Air models, the heat exchanger intermediate position is provided on the liquid
connection pipe side; as a result, superheated condition is difficult to detect.
SC Control in Heating Operation
Purpose of the
Function
This function ensures appropriate refrigerant distribution when many room units are operating in
the heating mode.
Outline
The heat exchanger temperatures and liquid pipe temperatures of operating room units are
detected by the liquid pipe thermistors, and the electronic expansion valves' flow rates are
corrected so as to adjust the difference between heat exchanger temperature and liquid pipe
temperature of each room unit (hereafter referred to as SC) close to the target values.
When SC is higher than target value → Opens the valve of that room unit
When SC is lower than target value → Closes the valve of that room unit
The liquid pipe temperature and indoor heat exchanger temperature are detected at the time of
every sampling time of 20 sec for the heating SC control.
6.5
Heat Exchanger Isothermal Control in Heating Operation
Purpose of the
Function
This function ensures appropriate refrigerant distribution when room units are operating in the
heating mode.
It prevents abnormal increase of the high pressure and operation with gas shortage due to
uneven refrigerant distribution (Protection function).
Outline
The indoor unit heat exchanger thermistors (of all connected indoor units to the same BP unit
including non-operating room units) in heating operation are detected. Then, the highest heat
exchanger temperature is compared with the heat exchanger temperature of each room unit. If
the temperature difference exceeds the predetermined value, it is judged that that indoor unit
heat exchanger thermistor position in subcooled zone, and the electronic expansion valves of
room units with the temperature difference exceeding the predetermined level is opened to
return to the saturation zone.
Since this is a protection function, it is effective for all connected room units in heating operation
excluding those in defrosting operation. This function is inactive in room units with transmission
problems.
Details
The heat exchanger temperature is detected at every sampling time of 20 sec of the heat
exchanger isothermal control, and maximum value of each heat exchanger temperature is
obtained.
If the temperature difference between the heat exchanger temperature and maximum heat
exchanger temperature value exceeds 8°C, it is judged that the heat exchanger intermediate is
in the subcooled zone, and the electronic expansion valve is opened.
Function
79
Indoor Unit (RA Models)
SiEBE18-526
7. Indoor Unit (RA Models)
7.1
Power-Airflow Dual Flaps, Wide Angle Louvers and
Auto-Swing
Power-airflow
Dual Flaps
The large flaps send a large volume of air downwards to the floor. The flap provides an optimum
control area in cooling, heating and dry mode.
Heating Mode
During heating mode, the large flap enables direct warm air straight downwards. The flap
presses the warm air above the floor to reach the entire room.
Cooling Mode
During cooling mode, the flap retracts into the indoor unit. Then, cool air can be blown far and
pervaded all over the room.
Wide-Angle
Louvers
The louvres, made of elastic synthetic resin, provide a wide range of airflow that guarantees a
comfortable air distribution.
Auto-Swing
In case of FTXS20-35D, CTXS50D
The following table explains the auto swing process for heating, cooling, dry and fan :
Cooling / Dry
Vertical Swing (up and down)
Heating
5°
10°
45 °
50°
30°
°
45
70°
65°
(R4282)
(R4281)
3-D Airflow
Horizontal Swing
(right and left: manual)
Fan
(R4284)
(R4283)
FTXS50-71B
„ Alternative repetition of vertical and horizontal swing motions enables uniform airconditioning of the entire room. This function is effective for starting the air conditioner.
„ When the horizontal swing and vertical swing are both set to auto mode, the airflow become
3-D airflow and the horizontal swing and vertical swing motions are alternated. The order of
swing motion is such that it turns counterclockwise, starting from the right upper point as
viewed to the front side of the indoor unit.
2
1
3
4
(R1024)
COMFORT
AIRFLOW Mode
FTXS20-35D, CTXS50D
The vertical swing flap is controlled not to blow the air directly on the person in the room.
„ The airflow rate is controlled automatically within the following steps.
Cooling: L tap – MH tap (same as AUTOMATIC)
Heating: ML tap – M tap
„ The latest command has the priority between POWERFUL and COMFORT AIRFLOW.
Heating
Cooling
5°
70°
(R4303)
80
(R4302)
Function
SiEBE18-526
7.2
Indoor Unit (RA Models)
Fan Speed Control for Indoor Units
Control Mode
The airflow rate can be automatically controlled depending on the difference between the set
temperature and the room temperature. This is done through phase control and Hall IC control.
For more information about Hall IC, refer to the troubleshooting for fan motor on page 260.
Phase Steps
Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H and HH.
Step
Cooling
LLL
LL
SL (Silent)
L
ML
M
MH
H
HH (Powerful)
Heating
(R2818)
(R2818)
Dry mode
20 · 25 · 35kW class :
670 - 880 rpm
(During powerful operation :
720 - 930 rpm)
50 · 60 · 71kW class :
750 - 1000 rpm
(During powerful operation :
1050 rpm)
= Within this range the airflow rate is automatically controlled when the FAN setting
button is set to automatic.
Note:
Automatic Air
Flow Control for
Heating
1. During powerful operation, fan rotates at H tap + 50 - 90 rpm.
2. Fan stops during defrost operation.
The following drawing explains the principle for fan speed control for heating:
DC motor: Rotation speed control
AC motor: Phase control
Thermostat
setting
temperature
-0.5°C
L
-1°C
-1.5°C
ML
-2°C
Difference between room
and set temperature
M
fan speed
Automatic Air
Flow Control for
Cooling
(R4593)
The following drawing explains the principle of fan speed control for cooling:
fan speed
M
+2°C
ML
+1.5°C
L
Difference between room
and set temperature
+1°C
+0.5°C
Thermostat
setting
temperature
DC motor: Rotation speed control
(R4594)
AC motor: Phase control
Function
81
Indoor Unit (RA Models)
7.3
SiEBE18-526
Programme Dry Function
Programme dry function removes humidity while preventing the room temperature from
lowering.
Since the microcomputer controls both the temperature and air flow volume, the temperature
adjustment and fan adjustment buttons are inoperable in this mode.
In Case of
Inverter Units
The microcomputer automatically sets the temperature and fan settings. The difference
between the room temperature at startup and the temperature set by the microcomputer is
divided into two zones. Then, the unit operates in the dry mode with an appropriate capacity for
each zone to maintain the temperature and humidity at a comfortable level.
Room temperature at
startup
Temperature (ON point) Frequency switching
at which operation starts point
temperature at
24°C Room
startup
18°C
Temperature difference
for operation stop
1.5°C
0.5°C
18°C
1.0°C
17°C
—
ON point
Frequency
switching
point
0.5°C
OFF point
5 min
5 min
Compressor
control
LHz
Stop
*55Hz
Indoor unit fan
Extra-low air flow
Low air flow
LHz
Stop
Extra-low air flow
Stop
LHz
Stop
*55Hz
Stop
Stop
Low air flow
LHz indicates low frequency. Item marked with varies depending on models.
(R1359)
82
Function
SiEBE18-526
7.4
Indoor Unit (RA Models)
Automatic Operation
Automatic Cooling / Heating Function (Heat Pump Only)
When the AUTO mode is selected with the remote controller, the microcomputer automatically
determines the operation mode from cooling and heating according to the room temperature
and setting temperature at the time of the operation startup, and automatically operates in that
mode.
The unit automatically switches the operation mode to cooling or heating to maintain the room
temperature at the main unit setting temperature.
Detailed
Explanation of
the Function
1. Remote controller setting temperature is set as automatic cooling / heating setting
temperature (18 to 30°C).
2. Main unit setting temperature equals remote controller setting temperature plus correction
value (correction value / cooling: 0 deg, heating: 2 deg.).
3. Operation ON / OFF point and mode switching point are as follows.
1 Heating → Cooling switching point:
Room temperature ≥ Main unit setting temperature +2.5 deg.
2 Cooling → Heating switching point:
Room temperature < Main unit setting temperature –2.5 deg.
3 Thermostat ON / OFF point is the same as the ON / OFF point of cooling or heating
operation.
4. During initial operation
Room temperature ≥ Remote controller setting temperature: Cooling operation
Room temperature < Remote controller setting temperature: Heating operation
Heating /
cooling switching point
2.5 deg.
or higher
(Heating thermostat
OFF point)
Main unit setting
temperature
(Cooling thermostat
OFF point)
Cooling /
heating switching point
(1.5 deg.)
or higher
Less than
(1.5 deg.)
Cooling
operation
Heating
operation
Cooling
operation
2.5 deg.
or higher
With compressor capacity supplied
With no compressor capacity supplied
(R1360)
Function
83
Indoor Unit (RA Models)
7.5
SiEBE18-526
Thermostat Control
Thermostat control is based on the difference between the room temperature and the setpoint.
Thermostat OFF Condition
Š The temperature difference is in the zone A.
Thermostat ON Condition
Š The temperature difference is above the zone C after being in the zone A.
Š The system resumes from defrost control in any zones except A.
Š The operation turns on in any zones except A.
Š The monitoring time has passed while the temperature difference is in the zone B.
(Cooling / Dry : 10 minutes, Heating : 10 seconds)
Cooling / Dry
ON
Room temperature - setpoint
Cooling : -0.5°C
Dry : -0.5°C
C
B
Cooling : -2.0°C
Dry : -2.5~-2.0°C
A
OFF
(R4668)
Heating
Room temperature - setpoint
OFF
A
1.5°C
B
C
0°C
ON
(R4669)
84
Function
SiEBE18-526
7.6
Indoor Unit (RA Models)
Night Set Mode
When the OFF timer is set, the Night Set circuit automatically activates.
The Night Set circuit maintains the airflow setting made by users.
The Night Set
Circuit
The Night Set circuit continues heating or cooling the room at the set temperature for the first
one hour, then automatically raises the temperature setting slightly in the case of cooling, or
lowers it slightly in the case of heating, for economical operations. This prevents excessive
heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions,
and also conserves electricity.
Cooling
Operation
Temperature
setting +1°C
Temperature
setting +0.5°C
Temperature
setting
Operation stops
at the set hours
0.5°C
0.5°C
1 hour
Timer operation
Night Set Circuit ON
30 minutes
+0.5°C
temperature shift
+0.5°C temperature shift
Temperature setting remains the same
: • When outside temperature is normal and room
temperature is at set temperature.
: • When outside temperature is high (27°C or higher).
(R1361)
In case of FTXS20-35D and CTXS50D, the temperature rises once.
Temperature
setting +0.5°C
Temperature
setting
Operation stops
at the set hours
0.5°C
Timer operation
Night Set Circuit ON
+0.5°C
temperature shift
(R4421)
Heating
Operation
2°C
Thermostat
setting
Timer operation
Night Set Circuit ON
Function
1 hour later
(R1362)
85
Indoor Unit (RA Models)
7.7
Outline
SiEBE18-526
ECONO Mode
FTXS20-35D, CTXS50D
The "ECONO mode" reduces the maximum operating current and power consumption by
approx. 30% during start up etc..
This mode is particularly convenient for energy-saving-oriented users. It is also a major bonus
for those whose breaker capacities do not allow the use of multiple electrical devices and air
conditioners.
It is easily activated from the wireless remote controller by pushing the ECONO button.
„ When this function is ON, the maximum capacity is also down. (Approx. 20%)
„ This function can only be set when the unit is running. Pressing the operation stop button
causes the settings to be canceled.
„ This function and POWERFUL operation cannot be used at the same time. The latest
command has the priority.
Power
consumption
and current
Approx.
Normal
30%
Econo Mode
Time
(R4607)
Details
86
„ ECONO mode can be activated while the unit is running. The remote controller can send the
ECONO command when the unit is in COOL, HEAT, DRY, or AUTO operation.
„ When the ECONO command is valid, the upper limit of frequency is restricted.
Function
SiEBE18-526
7.8
Indoor Unit (RA Models)
INTELLIGENT EYE
This is the function that detects existence of humans in the room by a human motion sensor
(INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to
save electricity.
Processing
1. Detection method by Intelligent Eye
sampling (20msec)
Sensor output
1sec
If the sensor detects the outputs 10 times/sec.
or more, it judges humans exist.
High
Low
(Human motion)
Human detection ON
signal
OFF
(R2821)
„ This sensor detects human motion by receiving infrared rays and displays the pulse wave
output.
„ A microcomputer in an indoor unit carries out a sampling every 20 msec. and if it detects 10
cycles of the wave in one second in total (corresponding to 20msec.× 10 = 100msec.), it
judges human is in the room as the motion signal is ON.
2. The motions (for example: in cooling)
within 20
minutes.
20 min.
20 min.
40 min.
Human detection ON
signal
OFF
RESET.
Cooling : Set temp. + 2°C
Heating : Set temp. - 2°C
Set temp.
Frequency at set temp. + 2°C
MaxHz
Compressor MinHz
0Hz
speed
The lower limit by detecting
human.
(Prohibition of thermostat-off)
Remote control
Intelligent Eye
button
Operation
in case of
thermostat-off
ON
OFF
ON
OFF
Fan speed (H1)
Set speed
Set speed
Set speed - 50 rpm
OFF
(R2822)
„ When a microcomputer doesn’t have a signal from the sensor in 20 minutes, it judges that
nobody is in the room and operates the unit in temperature sifted 2°C from the set
temperature. (Cooling : 2°C higher, Dry: 1°C higher and Auto : according to the operation
mode at that time.)
H1 In case of Fan mode, the fan speed reduces by 50 rpm.
Function
87
Indoor Unit (RA Models)
SiEBE18-526
„ Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed
becomes low and can realize energy saving operation. But as thermostat is prone to be off
by the fact that the set temperature has been shifted, the thermostat-off action is prohibited
in 40 minutes so as to prevent this phenomena.
After this 40 minutes, the prohibition of the thermostat-off is cancelled and it can realize the
conditions to conduct thermostat-off depending on the room temperature. In or after this forty
minutes, if the sensor detects human motion detection signal, it let the set temperature and
the fan speed return to the original set point, keeping a normal operation.
Others
88
„ The dry operation can’t command the setting temperature with a remote controller, but
internally the set temperature is shifted by 1°C.
Function
SiEBE18-526
7.9
Indoor Unit (RA Models)
HOME LEAVE Operation
Outline
In order to respond to the customer's need for immediate heating and cooling of the room after
returning home or for house care, a measure to switch the temperature and air volume from that
for normal time over to outing time by one touch is provided. (This function responds also to the
need for keeping up with weak cooling or heating.)
This time, we seek for simplicity of operation by providing the special temperature and air
volume control for outing to be set by the exclusive button.
Detail of the
Control
1. Start of Function
The function starts when the [HOME LEAVE] button is pressed in cooling mode or heating
mode (including stopping and powerful operation). If this button is pressed while the operation is
stopped, the function becomes effective when the operation is started. If this button is pressed
in powerful operation, the powerful operation is reset and this function becomes effective.
„ The [HOME LEAVE] button is ineffective in dry mode and fan mode.
2. Details of Function
A mark representing [HOME LEAVE] is indicated on the liquid crystal display of the remote
controller. The indoor unit is operated according to the set temperature and air volume for
HOME LEAVE which were pre-set in the memory of the remote controller.
The LED (Red) of indoor unit representing [HOME LEAVE] lights up. (It goes out when the
operation is stopped.)
3. End of Function
The function ends when the [HOME LEAVE] button is pressed again during [HOME LEAVE]
operation or when the powerful operation button is pressed.
Scene <Cooling>
“Home leave
operation”
set temp.
Set temp.
Home leave operation
Normal operation
Normal operation
Time
Start “Home leave operation”
Stop “Home leave operation”
(R1366)
Scene <Heating>
“Home leave
operation”
set temp.
Set temp.
Home leave operation
Normal operation
Normal operation
Time
Start “Home leave operation”
Others
Function
Stop “Home leave operation”
(R1367)
The set temperature and set air volume are memorized in the remote controller. When the
remote controller is reset due to replacement of battery, it is necessary to set the temperature
and air volume again for [HOME LEAVE].
89
Indoor Unit (RA Models)
SiEBE18-526
7.10 Inverter POWERFUL Operation
Outline
In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by
increasing the indoor fan rotating speed and the compressor frequency.
Details of the
Control
When POWERFUL button is pushed in each operation mode, the fan speed / setting
temperature will be converted to the following states in a period of twenty minutes.
In case of FTXS20-35D, CTXS50D
Operation mode
COOL
DRY
Fan speed
H tap + 50 rpm
Dry rotating speed +
50 rpm
HEAT
FAN
AUTO
H tap + 50 rpm
H tap + 50 rpm
Same as cooling /
heating in Powerful
operation
Target set temperature
18°C
Normally targeted
temperature in dry
operation; Approx. –2°C
30°C
—
The target is kept
unchanged
Ex.) : Powerful operation in cooling mode.
Target temp.
Set temp.
It should be the lower limit of cooling temperature.
18°C
Powerful ON
It counts 20 min. also in the remote control.
Powerful OFF
Fan
50rpm
H tap
Set tap
20min.
Ending condition: "or" in 1 to 3
1. After the lapse of 20 minutes.
2. Stop
3. Powerful operation is OFF.
(R4560)
90
Function
SiEBE18-526
Indoor Unit (RA Models)
7.11 Other Functions
7.11.1 Hot Start Function
Heat Pump Only
In order to prevent the cold air blast that normally comes when heating is started, the
temperature of the heat exchanger of the indoor unit is detected, and either the air flow is
stopped or is made very weak thereby carrying out comfortable heating of the room.
*The cold air blast is also prevented using a similar control when the defrosting operation is
started or when the thermostat gets turned ON.
7.11.2 Signal Receiving Sign
When the indoor unit receives a signal from the remote controller, the unit emits a signal
receiving sound.
7.11.3 ON/OFF Button on Indoor Unit
An ON/OFF button is provided on the front panel of the unit. Use this button when the remote
controller is missing or if its battery has run out.
Every press of the button switches from ON to OFF or from OFF to ON.
In case of FTXS20-35D, CTXS50D
ON/OFF
ON/OFF button
(R4269)
„ Push this button once to start operation. Push once again to stop it.
„ This button is useful when the remote controller is missing.
„ The operation mode refers to the following table.
Cooling Only
Heat Pump
Mode
COOL
AUTO
Temperature setting
22°C
25°C
Air flow rate
AUTO
AUTO
„ In the case of multi system operation, there are times when the unit does not activate with
this button.
7.11.4 Titanium Apatite Photocatalytic Air-Purifying Filter
This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing
Filter in a single highly effective unit. The filter traps microscopic particles, decompose odours
and even deactivates bacteria and viruses. It lasts for three years without replacement if
washed about once every six months.
7.11.5 Photocatalytic Deodorizing Filter
Photocatalytic Deodorizing Filter demonstrates powerful oxidation characteristics when
subjected to harmless ultraviolet light. Photocatalytic deodorizing power is recovered simply by
exposing the filter to the sun for 6 hours once every 6 months.
7.11.6 Air-Purifying Filter
A double structure made up of a bacteriostatic filter and an Air-Purifying Filter traps dust,
mildew, mites, tobacco smoke, and allergy-causing pollen. Replace the Air-Purifying Filter once
every 3 months.
Function
91
Indoor Unit (RA Models)
SiEBE18-526
7.11.7 Air Purifying Filter with Photocatalytic Deodorizing Function
This filter incorporates the benefits the Air Purifying Filter and Photocatalytic Deodorizing Filter
in a single unit. Combining the two filters in this way increases the active surface area of the
new filter. This larger surface area allows the filter to effectively trap microscopic particles,
decompose odours and deactivate bacteria and viruses even for the high volume of air required
to air-condition large living rooms. The filter can be used for approximately 3 years if periodic
maintenance is performed.
7.11.8 Mold Proof Air Filter
The filter net is treated with mold resisting agent TBZ (harmless, colorless, and odorless). Due
to this treatment, the amount of mold growth is much smaller than that of normal filters.
7.11.9 Self-Diagnosis Digital Display
The microcomputer continuously monitors main operating conditions of the indoor unit, outdoor
unit and the entire system. When an abnormality occur, the LCD remote controller displays error
code. These indications allow prompt maintenance operations.
7.11.10Auto-restart Function
Even if a power failure (including one for just a moment) occurs during the operation, the
operation restarts in the condition before power failure automatically when power is restored.
(Note) It takes 3 minutes to restart the operation because the 3 minute stand-by function is
activated
92
Function
SiEBE18-526
Indoor Unit (SkyAir Models)
8. Indoor Unit (SkyAir Models)
8.1
Function Outline
FFQ-B, FHQ-B
(Input)
Indoor Unit
(Output)
Thermostat Control
Suction Sensor(R1T)
Two thermostats used, suction
and remote control.
Fan Motor
Monitoring Function
Heat Exchanger Sensor
(R2T)
Cool/Heat Automatic
Function
Heat Exchanger Sensor
(R3T)
Program Dry
Drain Pump
Optional for FHQ
Flap Motor
Fan Operation
LED Display
Float Switch
Drain Pump Control
Optional for FHQ
Buzzer, LED
Freeze-up Protection
Function
No. of Fan Turns
Wireless units only
Heating Overload Control
Only for FHQ
Limit Switch for Flap
Defrosting
Only for FHQ
Indoor Unit Fan Control
Phase control
Emergency Operation
Switch
Wireless units only
Cold Air Prevention
Function
Flap Control
Remote Control with
Liquid Crystal
ON/OFF
Air flow direction,
Fan speed, etc.
Remote Control
Sensor
(Not provided for infrared
remote control.)
Function
Operation Mode Guard
Function
Malfunction Detection
Function
Ceiling Soiling Prevention
Function
(S2540)
93
Indoor Unit (SkyAir Models)
8.2
SiEBE18-526
Electric Function Parts
FFQ – BV1B
Capacity
25
Wired remote controller
Wireless remote
controller
Heat pump
Cooling only
35
50
BRC1C517
(BRC1C61 for Australia)
60
BRC7E(A)530W
BRC7E(A)531W
[2P095006-2] EC0280
[3P104408-1] 4P 55W
4.0MF 440VAC
MP35HCA
[3P080801-1]
[4P104167-1] FS-0211
[3P103929-1]
PLD-12230 DM-17
Electronic control unit
Fan motor
Fan motor capacitor
Swing flap motor
Float switch
Drain pump
Remarks
Optional
Accessory
Optional
Accessory
FHQ – BUV1B
Capacity
Wired remote controller
Wireless remote
controller
Electronic Control Unit
Fan Motor
Fan Motor Capacitor
Swing Motor
94
Heat pump
Cooling only
35
50
BRC1C517
BRC7E(A)63W
BRC7E(A)66
[2P095007-1]
EC0227
[3PN04213-1] 4P 62W
3.0MF 400V
[3PN04208-1]
60
Remarks
Optional
Accessory
Optional
Accessory
Function
SiEBE18-526
8.3
Indoor Unit (SkyAir Models)
Function Details
Thermostat
Control
Cool/Heat Automatic
Display Setting Display Setting Display
Heating
Cooling
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
25
Initial setting
25
25
25
25
Set temperature
-2.5 -2 -1 0 +1 +2 +2.5
Cooling
thermostat ON
Cooling
thermostat OFF
Heating
thermostat OFF
Heating
thermostat ON
(S1962)
Freeze-up
Protection
Control
The thermostat turns OFF under the following temperature conditions to prevent freezing of the
indoor unit heat exchanger.
„ The motorized valve is controlled to maintain the indoor unit heat exchanger temperature
(Te) above 0°C.
„ The outdoor unit fan speed is reduced to prevent freeze-up protection control from activating
during cooling operation under low outside air temperature. (For details, see the section on
cooling operation under low outside air temperature.)
Outdoor unit heat exchanger temperature
(Te)
Freeze prevention control
7°C
-1°C
-3°C
-5°C
Reset after 10 continuous minutes
Thermostat OFF after
40 cumulative minutes
Thermostat OFF after 1 continuous minutes
from 8 min. after starting (FHQ only)
Thermostat OFF after
1 continuous minutes from 8 min. after starting (FFQ only)
(S1116)
Function
95
Indoor Unit (SkyAir Models)
Condensation
Avoidance
Control (FHQ
Only)
SiEBE18-526
Continuous 30 minutes operation of cooling
After continuous 30 minutes of operation with downward
horizontal blade position, change the blade position to
level, and after one hour, the unit operation can be reset.
One hour drying
The unit operation can be reset with changing operation
mode into "heating" , changing air flow direction or turning
"ON" or "OFF" the unit operation.
(S1117)
Note:
Outdoor Unit
Identification
Function
1. Regardless of thermostat ON or OFF, the control can be functioned with the operation mode
of “ cooling ( automatic cooling ) ” or “ programmed drying ”.
2. The function is not provided for models other than FHQ models.
If the indoor unit is for both a heat pump and cooling only type, this function differentiates
whether the outdoor unit is functioning as a heat pump or cooling only unit, and automatically
decides the which operation modes can be set.
„ Operation modes which can be set
Heat pump : Fan / cool / dry / auto / heat
Drain Pump Control FFQ and FHQ (OPTION)
Time A shown in below diagram
(Period from occurrence of drain water level abnormality to
compressor stop)
FHQ
Other than FHQ
A [sec]
10
0
1 Cooling and dry operation
1-1 Basic operation
For cooling or dry operation mode, drain pump is turned ON on compressor starting while turned OFF
when residual operation for 5 minutes is complete after compressor stopped.
5min
Drain pump
Compressor
96
ON
OFF
ON
OFF
Function
SiEBE18-526
Indoor Unit (SkyAir Models)
1-2 Operations when an occurrence of water level abnormality
1-2-a) Behavior between occurrence and recovery of water level abnormality
After compressor stops due to water level abnormality, drain pump is operated intermittently, i.e. 5 min
ON, 5 sec OFF and 5 min ON. (*1) The intermittent operation is executed regardless of recovery of water
level abnormality during the intermittent operation. (*2) When the water level abnormality can not be
recovered, the latter 5 min ON operation is continued until recovery of the abnormality. (*3)
Occurrence of drain water level abnormality
Intermittent operation (*1)
5
5min
5min
sec
A 10
sec sec
Water level abnormality
Normal
ON
Drain pump
OFF
ON
Compressor
OFF
Error processing Abnormal
Normal
Drain pan
*2
Even though the water level
abnormality could be recovered
during intermittent operation, the
operation shall be carried out
without exception.
*3
If the abnormality could not be recovered
during intermittent operation, the latter 5
min ON operation is continued until
recovery of the abnormality.
1-2-b) Behavior when the unit restarts by remote control after the water level abnormality is recovered
Water level abnormality shall be cancelled simultaneausly when the unit is turned off with remote control
after recovery of the water level abnormality. When the unit is turned on with remote control thereafter,
compressor starts operation 2 minutes later from the remote control ON. (Below diagram shows an
example of the case that the water level abnormality is recovered during the former 5 min intermittent
operation.)
Occurrence of drain water level abnormality
5min
5
sec
A 10
sec sec
Water level abnormality
Normal
ON
Drain pump
OFF
ON
Compressor
OFF
Abnormal
Error processing
Normal
ON
Remote control
OFF
Drain pan
2 min
Compressor starts operation after 2 minutes from
remote control ON.
(When 3-min standby of compressor is complete.)
Alarm indication will be turned off with the remote control
OFF operation after recovery of drain water level abnormality.
Recovery of drain water level abnormality
Note : (1 On the whole of cooling and dry operation)
Recovery operation for drain water level abnormality does not activate when the water level can
be returned normal within A + 10 seconds.
Function
97
Indoor Unit (SkyAir Models)
SiEBE18-526
2. Heating
2-1 Basic operation
In heating operation of the unit equipped with a humidifier, when "Interlocking of drain pump /
humidifier" (15(25)-3) is set to "yes" (02), the drain pump operates 20-min OFF and 3-min ON
repeatedly during compressor is in operation.
After compressor stops, residual operation will be conducted for 5 minutes.
2-1-1 When compressor stops during drain pump ON after compressor operation started
20 min
Drain pump
Compressor
3
min
20 min
5min
ON
OFF
ON
OFF
2-1-2 When compressor stops during drain pump OFF after compressor operation started
20 min
Drain pump
Compressor
3
min
5min
ON
OFF
ON
OFF
2-2
Operations when an occurrence of drain water level abnormality
2-2-a) Behavior between occurrence and recovery of drain water level abnormality
After compressor stops due to water level abnormality, drain pump is operated intermittenly, i.e. 5 min
ON, 5 sec OFF and 5 min ON. (*1) The intermittent operation is executed regardless of recovery of abn.
Water level during the intermittent operation. (*2) When the abn. water level can not be recovered, the
latter 5 min ON operation is continued until recovery of the abnormality. (*3) On above diagram, the
system operation in the event of a water level abnormality occurrence differs between the drain pump ON
and OFF. The details are as follows.
2-2-a)-1 When a water level abnormality occurs during drain pump ON
1 The same operation as 1-2-a) "Behavior between occurrence and recovery of drain water level
abnormality" in the mode of cooling or dry.
Occurrence of drain water level abnormality
Intermittent operation (*1)
5
5min
5min
sec
A 10
sec sec
Water level abnormality
Normal
ON
Drain pump
OFF
ON
Compressor
OFF
Abnormal
Error processing
Normal
Drain pan
*2
Even though the water level
abnormality could be recovered
during intermittent operation, the
operation shall be carried out
without exception.
*3
If the abnormality could not be recovered
during intermittent operation, the latter 5
min ON operation is continued until
recovery of the abnormality.
Note : ((2-2-a)-1 When a water level abnormality occurs during drain pump ON)
Recovery operation for drain water level abnormality does not activate when the water level can
be returned normal within A + 10 seconds.
98
Function
SiEBE18-526
Indoor Unit (SkyAir Models)
2-2-a)-2 When a water level abnormality occurs during drain pump OFF
The abnormality is determined when 80 seconds elapse from compressor stop. Other than above,
behavior is same as 2-2-a).
Occurrence of drain water level abnormality
Intermittent operation (*1)
5
5min
5min
sec
A
sec 80 sec
Water level abnormality
Normal
ON
Drain pump
OFF
ON
Compressor
OFF
Abnormal
Error processing
Normal
Drain pan
Note : ((2-2-a)-2 When a water level abnormality occurs during drain pump OFF)
Recovery operation for drain water level abnormality does not activate when the water level can be
returned normal within A + 80 seconds.
2-2-b) Behavior when the unit restarts by remote control after the water level abnormality is recovered
Abnormal water level shall be cancelled simultaneausly when the unit is turned off with remote control
after recovery of abnormal water level. When the unit is turned on with remote control thereafter,
compressor starts operation 2 minutes later from the remote control ON. (Below diagram shows an
example of the case that the water level abnormality is recovered during the former 5 min intermittent
operation after the abnormality occurred during drain pump ON.)
Occurrence of drain water level abnormality
Intermittent operation (*1)
5
5min
5min
sec
Basic operation
3
20min
20 min
min
A 10
sec sec
Water level abnormality
Normal
ON
Drain pump
OFF
ON
Compressor
OFF
Abnormal
Error processing Normal
ON
Remote control
OFF
Drain pan
2 min
Compressor starts operation after 2 minutes from
remote control ON.
(When 3-min standby of compressor is complete.)
Alarm indication will be turned off with the remote control OFF
operation after recovery of drain water level abnormality.
Recovery of drain water level abnormality
Function
99
Indoor Unit (SkyAir Models)
Using Conditions
for Remote
Controller
Thermostat
SiEBE18-526
(Applicable models: FHQ & FFQ only)
Remote controller thermostat is equipped only in wired remote controller.
Even when “ use remote controller thermostat ” is selected in service mode, the remote
controller thermostat may not be used.
< Conditions not to use >
1. When the remote controller thermostat malfunctions.
2. When the one remote controller group control is applied.
( Excluding simultaneous ON/OFF operation )
3. When conditions relating set temperature with remote controller and suction air temperature
are out of the operating zone of remote controller thermostat shown in below diagram.
( Excluding when automatic operation mode is selected. Whenever operation is in the
automatic mode, remote controller thermostat can be used. )
ts: Set temp. (°C)
For cooling
35
ts = ts = th + 1
th + 3
ts = th - 1
ts = th - 3
Remote control thermostat
operating zone
Differential zone
23
21
20
21 23
35
Th: Suction air temp. (°C)
20
(S1118)
ts: Set temp. (°C)
For heating
ts = th + 1
ts = th - 1
30
28
Remote control thermostat
operating zone
Differential zone
ts = th - 10
ts = th - 12
18
16
15
27
15
100
30
29
Th: Suction air temp. (°C)
(S2746)
Function
SiEBE18-526
Program Dry
Operation
Function
Indoor Unit (SkyAir Models)
The points of thermostat ON or OFF are determined according to the suction air temperature at
the startup of unit operation.
The set temperature and flow rate are not displayed on remote controller.
Suction air temp. Ts
Operation startup
Thermostat
ON
TdON
TON
(Differential)
Thermostat
OFF
(S1120)
1. Thermostat ON point ( TON ) according to suction air temp. (TS ).
Suction air temp
Ts>24°C
24°C≥ Ts>16°C
16°C≥ Ts
TON(°C)
Ts
Ts
16°C
TdON(°C)
1.5
1.0
1.0
ON
OFF
2. Operation condition
Compressor condition
Setting of flow rate
Angle of flap
Air flow direction set with remote
controller
Auto-restart
Function
Caution
L operation
Set angle
Set angle
OFF
Set angle
Set angle
If there is a power cut when the unit is operating, it will automatically resume the same operating
mode when the power is restored.
When performing maintenance and the power supply is to be shut off, be sure to turn the remote
controller’s ON/OFF switch OFF first.
Shutting the power supply switch off while the ON/OFF switch is still ON is dangerous because
the “power failure automatic reset function” will cause the indoor fan to start turning
immediately, or the outdoor unit fan to automatically start turning three minutes after the power
supply is turned back on.
Function
101
Indoor Unit (SkyAir Models)
SiEBE18-526
Fan and Flap
Operations
Heating
Operation
Cooling
Operation
Hot Start from Defrost In Swing
Operation
In Airflow
Direction Setting
Defrost
In Swing
Operation
In Airflow
Direction Setting
Thermostat OFF
In Swing
Operation
In Airflow
Direction Setting
Hot Start from
In Swing
Thermostat OFF
Operation
(Cold Air Prevention) In Airflow
Direction Setting
Stop (Error)
In Swing
Operation
In Airflow
Direction Setting
Overload Thermostat In Swing
OFF
Operation
In Airflow
Direction Setting
Thermostat ON in
In Swing
Program Dry Mode
Operation
In Airflow
Direction Setting
Thermostat OFF in
In Swing
Program Dry Mode
Operation
In Airflow
Direction Setting
Cooling Thermostat
In Swing
OFF
Operation
In Airflow
Direction Setting
Stop (Error)
In Swing
Operation
In Airflow
Direction Setting
Freeze Prevention in In Swing
Program Dry Mode
Operation
(Including Cooling
In Airflow
Operation)
Direction Setting
Fan
Flap
FHQ & FFQ
OFF
Horizontal
Remote
Controller
Indication
Swing
OFF
Horizontal
Set Position
OFF
Horizontal
Swing
OFF
Horizontal
Set Position
LL
Horizontal
Swing
LL
Horizontal
Set Position
LL
Horizontal
Swing
LL
Horizontal
Set Position
OFF
Horizontal
—
OFF
Horizontal
—
LL
Horizontal
Swing
LL
Horizontal
Set Position
L
Swing
Swing
L
Setting
Set Position
OFF
Swing
Swing
OFF
Setting
Set Position
Setting
Swing
Swing
Setting
Setting
Set Position
OFF
Horizontal
—
OFF
Setting
—
L
H1
L
H1
Swing
Swing
Setting
Set Position
H1: L or LL operation for FFQ-BV1 only.
(L for 4way outlet and LL for 2way or 3way outlet)
102
Function
SiEBE18-526
Indoor Unit (SkyAir Models)
Mode Conflict
[Overview]
While the indoor unit for another room and the outdoor unit are operating, when the indoor unit
for the own room is activated, the operation mode which can be selected in the own room has
some restrictions as mentioned below.
i)
In case an priority for operation mode selection is given to the own room by setting the dip
switch of outdoor unit;
→The own room can be operated in any mode.
ii)
In case an priority for operation mode selection is not given to the own room by setting the
dip switch of outdoor unit;
→The unit can be operated as follows:
Outdoor unit
Operation mode selected in the own room
operation mode
when an operation
mode for the own
Cooling or
Heating or
room is selected.
Dry
Blowing
Automatic heating
(The outdoor unit Automatic cooling
(Note)
(Note)
is operated in the
mode as
mentioned below.)
Cooling
{
{
{
×
Heating
×
×
×
{
Blowing
{
{
{
{∗
{:Operational ∗:The unit for another room is switched into non-operational condition.
× : Non-operational
* Operation of the indoor unit for the own room during non-operation.
• Fan = OFF
• Louver = becomes horizontal position.
• ON LED on the remote controller = blinks.
• Indication of "under central control" on the remote controller = displayed.
Note:
Function
During automatic operation, at the time of changing operation mode to Automatic cooling
or Automatic heating, the unit is operated as the table shown above.
103
Indoor Unit (SkyAir Models)
Non-operating
Room Dew
Prevention Fan
Control
SiEBE18-526
[Overview]
After operating an indoor unit for the own room in the cooling mode or dry mode, stop the unit
using the remote controller. Under the condition, when an unit for another room is started
operation in the heating mode, the fan in the own room may rotate in the LL mode even though
the remote controller of the fan is in stop mode.
[Purpose]
On multiple units, when units of other rooms start heating operation after unit of the own room
starts cooling or dry operation, high-temperature refrigerant flows to the unit of the own room,
thus resulting in evaporation of condensate retained in heat exchanger or drain pan. At this
time, if casing temperature is below dew point, dew gets condensed. In order to prevent the dew
condensation, this control is used to operate the fan for a specified period of time, thus
discharging the moisture from the indoor unit.
[Outline]
• The fan rotates in LL mode even though the unit is turned off by the use of remote controller.
• This control can be reset only by conducting the cooling or dry operation of the unit of the
own room with thermostat ON.
• This control is enabled within 8 hours after the “Outdoor unit operation mode” has changed
from cooling or dry operation to heating operation.
• During the 8 hours, this control is activated for a cumulative period of 40 minutes.
„ Emergency operation is not conducted.
The outdoor unit has no emergency function. Therefore, in the case of connecting to Split or
Split Multi outdoor unit, only the fan operation is conducted even though the dip switch of indoor
unit is set to EMERGENCY.
104
Function
SiEBE18-526
Part 6
Test Operation
1. Test Operation ....................................................................................106
1.1 Procedure and Outline .........................................................................106
2. Outdoor Unit PCB Layout....................................................................111
3. Field Setting ........................................................................................112
3.1 Field Setting from Outdoor Unit............................................................112
3.2 Detail of Setting Mode ..........................................................................118
4. Field Setting for SkyAir Indoor Unit .....................................................128
4.1
4.2
4.3
4.4
4.5
4.6
4.7
Explanation...........................................................................................128
Field Setting .........................................................................................129
Initial Setting Contents .........................................................................130
Local Setting Mode Number.................................................................131
Detailed Explanation of Setting Modes ................................................132
Centralized Group No. Setting .............................................................136
Maintenance Mode Setting...................................................................137
5. Test Operation and Field Setting for RA Indoor Unit...........................138
5.1 Test Operation from the Remote Controller .........................................138
5.2 Jumper Settings ...................................................................................139
Test Operation
105
Test Operation
SiEBE18-526
1. Test Operation
1.1
Procedure and Outline
Follow the following procedure to conduct the initial test operation after installation.
1.1.1 Check work prior to turn power supply on
Check the below items.
2Power wiring
2Control transmission wiring
between units
2Earth wire
Check on refrigerant piping
Check on amount of refrigerant
charge
Is the power supply single-phase 220-230V / 50Hz?
Have you finished a ductwork to drain?
Have you detach transport fitting?
Is the wiring performed as specified?
Are the designated wires used?
Is the grounding work completed?
Use a 500V megger tester to measure the insulation.
• Do not use a megger tester for other circuits than 200-230V circuit.
Are the setscrews of wiring not loose?
Is the electrical component box covered with an insulation cover
completely?
Is pipe size proper? (The design pressure of this product is
4.0MPa.)
Are pipe insulation materials installed securely?
Liquid and gas pipes need to be insulated. (Otherwise causes
water leak.)
Are respective stop valves on liquid and gas line securely open?
Is refrigerant charged up to the specified amount?
If insufficient, charge the refrigerant from the service port of stop
valve on the liquid side with outdoor unit in stop mode after
turning power on.
Has the amount of refrigerant charge been recorded on “Record
Chart of Additional Refrigerant Charge Amount”?
(V3180)
1.1.2 Turn power on
Turn outdoor unit power on.
Be sure to turn the power on 6 hours before starting operation to
protect compressors.
Turn indoor unit power on.
Carry out field setting on
outdoor PC board
(Q0398)
106
Test Operation
SiEBE18-526
Test Operation
1.1.3 Judging and reprogramming in case of redundant BP addresses
The BP unit of this system is provided with specific addresses in its production stage. These
addresses are used to conduct various controls. If by any chance (on 3 out of 260000 units)
these addresses are redundant, the system may get in trouble. When replacing the PCB of the
BP unit too, these addresses may be used repeatedly.
Address redundancy checking flowchart
With the system set up, power on both the
outdoor unit and BP unit.
Give a start command from the indoor unit. Does
the compressor start in 20 minutes? (Test run
cannot be made either.)
No
Yes
Normal
Set the outdoor unit PCB in the monitor mode
and check the number of indoor units being
connected.
Yes
The compressor is in a non-startup
condition.
Example: thermostat control off,
alarm being issued, heating with
high outdoor
air temperature, compressor
failure, etc.
Is the number of connected indoor units correct?
No
BP addresses redundancy.
Reprogram the addresses.
(Q0517)
Reprogramming the PCB addresses of BP unit
DS2
Modify the DIP switch (DS2) settings on the BP unit's PCB in the following way.
OFF ON
DS2-1
DS2-2
DS2-3
DS2-4
H1P (LED A)
H2P (LED 1)
H3P (LED 2)
H4P (LED 3)
H5P (LED 4)
(Q0444)
Test Operation
107
Test Operation
SiEBE18-526
Example of DIP switch (DS2) settings on the BP unit's PCB
BP unit 1
BP unit 2
BP unit 3
DS2-1
OFF
OFF
OFF
DS2-2
OFF
OFF
OFF
DS2-3
ON
OFF
ON
DS2-4
OFF
ON
ON
DS1~4 : Factory setting is OFF.
The BP unit 1 through 3 show the first through third unit, respectively. The order of these units is
flexible.
The above table is just for your reference. The redundancy of addresses can be avoided when
the DIP switch settings are individually specified.
With the DIP switch settings reprogrammed, power on the outdoor unit and BP unit again.
Check for address redundancy.
Note:
If an error display appears on the indoor unit, BP unit or outdoor unit, follow its code and
description.
1.1.4 When Turning On Power First Time
The unit cannot be run for up to 12 minutes to automatically set address (indoor-outdoor
address, etc.).
Status
Outdoor unit
Test lamp H2P .... Blinks
Can also be set during operation described above.
Indoor unit
If ON button is pushed during operation described above, the “UH”
malfunction indicator blinks.
(Returns to normal when automatic setting is complete.)
1.1.5 When Turning On Power the Second Time and Subsequent
Tap the RESET(BS5) button on the outdoor unit PC board. Operation becomes possible for
about 2 minutes. If not, the unit cannot be run for up to 10 minutes.
Status
Outdoor unit
Test lamp H2P .... Blinks
Can also be set during operation described above.
Indoor unit
If ON button is pushed during operation described above, the operation lamp
lights but the compressor does not operate. (Returns to normal when
automatic setting is complete.)
1.1.6 When the No. of Indoor Unit Has Been Changed, or Indoor (BP) or
Outdoor Unit PC Board Has Been Changed, or the System is
transferred
Be sure to push and hold the RESET button for 5 seconds. If not, the addition cannot be
recognized. In this case, the unit cannot be run for up to 12 minutes to automatically set the
address (indoor-outdoor address, etc.)
Status
108
Outdoor unit
Test lamp H2P .... ON
Can also be set during operation described above.
Indoor unit
If ON button is pushed during operation described above, the “UH” or “U4”
malfunction indicator blinks. (Returns to normal when automatic setting is
complete.)
Test Operation
SiEBE18-526
Test Operation
1.1.7 Check Operation
* During check operation, mount front panel to avoid the misjudging.
* Check operation is mandatory for normal unit operation.
(When the check operation is not executed, alarm code "U3" will be displayed.)
Press and hold the TEST
OPERATION button (BS4) on
outdoor unit PC board for 5
seconds.
Check on operation
⎧ The test operation is started automatically.
⎫
⎪ The following judgements are conducted within 15 minutes(about 30 ⎪
at the maximum).
⎪ minutes
⎪
2“Check for wrong wiring”
⎪ 2“Check stop valve for not open”
⎪
⎪ The following indications are conducted while in test operation.
⎪
⎪ 2LED lamp on outdoor unit PC board H2P Blinks (test operation) ⎪
Indicates “
” (during centralized control) on ⎪
⎪ 2Remote control
upper right.
⎪ (Only for SkyAir)
⎪
on
lower
left
Indicates
“
”
(test
operation)
⎪
⎪
⎩
⎭
(Q0379)
On completion of test operation, LED on outdoor unit PC board displays the following.
H3P ON: Normal completion
H2P and H3P ON: Abnormal completion → Check the indoor unit remote controller for
abnormal display and correct it.
Malfunction code
In case of an alarm code displayed on remote controller:
Malfunction
code
E3
E4
F3
U3
U4
UA
UF
UH
Test Operation
Nonconformity during installation
The stop valves in the outdoor unit remain
closed.
The stop valves in the outdoor unit remain
closed.
Remedial action
Open the stop valve on both the gas side and liquid side.
Open the stop valve on both the gas side and liquid side.
The operation mode on the remote controller Set the operating mode on all indoor unit remote controllers to
was changed before the check run.
“cooling”.
The refrigerant is insufficient.
• Check whether additional refrigerant charge has been finished
correctly.
• Calculate again the required quantity of refrigerant to be
charged based on the piping length, then charge additionally
proper quantity of refrigerant.
The check operation is not performed.
The power is not supplied to the outdoor unit.
Improper type of indoor units or BP units are
connected.
The stop valves in the outdoor unit remain
closed.
The piping and wiring of the specified indoor
unit are not connected correctly to the
outdoor unit.
The operation mode on the remote
controller was changed before the check
operation.
The unit-to-unit wirings are not connected
correctly.
Perform the check operation.
Connect correctly the power cable of the outdoor unit.
Check the type of indoor units and BP units currently connected.
If they are not proper, replace them with proper ones.
Open the stop valve on both the gas side and liquid side.
Confirm that the piping and wiring of the specified indoor unit are
connected correctly to the outdoor unit.
Set the operating mode on all indoor unit remote controllers to
“cooling”.
Connect correctly the unit-to-unit wirings to the F1 and F2(TO BP
UNIT) terminals on the PC board (A1P) in the outdoor unit.
109
Test Operation
SiEBE18-526
1.1.8 Confirmation on Normal Operation
•
•
•
•
•
110
Conduct normal unit operation after the check operation has been completed.
(When outdoor air temperature is 30°CDB or higher, the unit can not be operated with
heating mode. See the installation manual attached.)
Confirm that the indoor/outdoor units can be operated normally.
(When an abnormal noise due to liquid compression by the compressor can be heard, stop
the unit immediately, and turn on the crankcase heater to heat up it sufficiently, then start
operation again.)
Operate indoor unit one by one to check that the outdoor unit operates.
Confirm that the indoor unit discharges cold air (or warm air).
Operate the air direction control button and flow rate control button to check the function of
the devices.
Test Operation
SiEBE18-526
Outdoor Unit PCB Layout
2. Outdoor Unit PCB Layout
Outdoor Unit PCB
(2) Set mode display (LED)
(3) Mode setting switch
H1P H2P H3P H4P H5P H6P H7P
BS1
BS2
BS3
BS4
BS5
MODE
SET
RETURN
TEST
RESET
(1) Microcomputer normal monitor
HAP
1 2 3 4 1 2 3 4
DS2
DS1
(4)Local setting switch
Connection terminal for transmission use
A
B
C F1 F2 F1 F2
C/H SELECTOR TO BP UNIT
(Q0404)
(1) Microcomputer normal monitor (LED Green)
This monitor blinks while in normal operation, and turns on or off when a malfunction occurs.
(2) Set mode display (LED Orange)
LEDs display mode according to the setting.
(3) Mode setting switch
Used to change mode.
(4) Local setting switch
Used to make local settings.
Test Operation
111
Field Setting
SiEBE18-526
3. Field Setting
3.1
Field Setting from Outdoor Unit
3.1.1 Setting by dip switches
The following field settings are made by dip switches on PC board.
Dipswitch
Setting
ON
DS1-1
OFF (Factory set)
No.
Description
Cool / Heat
change over
setting
Used to set cool / heat change over setting by
remote controller equipped with outdoor unit.
ON
DS1-2
~DS1-4 OFF (Factory set)
Not used
Do not change the factory settings.
ON
OFF (Factory set)
Not used
Do not change the factory settings.
DS2-1
~4
Caution
Setting item
DIP switch Setting after changing the main P.C.Board(A1P) to spare parts P.C.B.
When you change the main P.C.Board(A1P) to spare parts P.C.B., please carry out the following
setting.
The spare parts P.C.B. is different from the P.C.B. on factory shipment above in a way of setting.
When you exchange to the spare parts P.C.B., make sure that you change setting referring the
following table.
ON
OFF
ON
OFF
1 2 3 4
DS1
1 2 3 4
DS2
DIP Switch Detail
DS No.
Item
DS1-1
Cool/Heat change
over setting
DS1-2
Cooling only/Heatpump setting
DS1-3
DS1-4
Not used
DS2-3
ON
The Cool/Heat change over setting is carried out by COOL/HEAT
changeover remote control fitted to outdoor unit.
OFF
The Cool/Heat change over setting is not carried out by
COOL/HEAT changeover remote control fitted to outdoor unit.
ON
Cooling only
OFF
Heat-pump
Do not change the factory settings.
The following setting is performed according to capability of the outdoor unit.
DS2-1
DS2-2
Contents
HP setting
(Horse power)
4HP
5HP
6HP
DS2-1
ON
OFF
OFF
DS2-2
OFF
ON
OFF
DS2-3
OFF
OFF
ON
DS2-4
OFF
OFF
OFF
DS2-4
112
Test Operation
SiEBE18-526
Field Setting
„ Setting by pushbutton switches
The following settings are made by pushbutton switches on PC board.
LED indication
H1P
H2P
H3P
H4P
H5P
H6P
H7P
7
7
8
7
7
7
7
(Factory setting)
BS1
BS2
BS3
BS4
BS5
MODE
SET
RETURN
TEST
RESET
(V2760)
There are the following three setting modes.
c Setting mode 1 (H1P off)
Initial status (when normal) : Also indicates during “abnormal”.
d Setting mode 2 (H1P on)
Used to modify the operating status and to set program addresses, etc. Usually used in
servicing the system.
e Monitor mode (H1P blinks)
Used to check the program made in Setting mode 2.
„ Mode changing procedure
Using the MODE button, the modes can be changed as follows.
Setting mode 2
(Normal)
Push and hold the BS1
(MODE button) for 5 seconds.
Setting mode 1
Push the BS1(MODE button)
one time.
Monitor mode
Push the BS1(MODE button) one time. MODE
MODE
MODE
Off
On
H1P
Blinking
H1P
H1P
(V2761)
„ Mode changing procedure
(Set): Select mode with BS2 (SET button) in each selection step.
Press BS1 (MODE button) for more than 5 sec.
Setting mode 1
(Initial condition)
Press BS1(MODE button).
Setting mode 2
Monitor mode
Setting item selection (Set)
Check item selection (Set)
Press BS3
(RETURN button).
Setting condition
selection (Set)
Press BS3
(RETURN button).
Press BS3
(RETURN button).
Contents display
Press BS3
(RETURN button).
Setting condition
(Contents) display
Press BS3
(RETURN button).
Press BS1
(MODE button).
Press BS1
(MODE button).
(V2762)
Test Operation
113
Field Setting
SiEBE18-526
a. “Setting mode 1”
“Normally, “Setting mode 1” is set.
In case of other status, push MODE
button (BS1) one time and set to
“Setting mode 1”.
Display for malfunction/preparing/test-run
∗ The current state is displayed.
Setting (displaying) item
Normal
Malfunction
Preparing/Test-run
H1P
7
7
7
LED display example
H2P H3P H4P H5P H6P
7
8
9
8
8
8
7
7
7
7
7
7
7
7
7
H7P
7
7
7
8 : ON
7 : OFF
9 : Blinking
114
Test Operation
SiEBE18-526
Field Setting
b. “Setting mode 2”
No.
Push and hold the MODE button
(BS1) for 5 seconds and set to
“Setting mode 2”.
5
6
8
9
10
<Selection of setting items>
Push the SET button (BS2) and set
the LED display to a setting item
shown in the table on the right.
↓
Push the RETURN button (BS3) and
decide the item. (The present setting
condition is blinked.)
21
22
26
27
<Selection of setting conditions>
Push the SET button (BS2) and set
to the setting condition you want.
↓
Push the RETURN button (BS3) and
decide the condition.
Setting item
Indoor unit forced
fan H
Indoor unit forced
operation
Te setting
Tc setting
Defrost changeover
setting
Refrigerant
collection mode
setting
Description
Allows forced operation of indoor unit fan while unit is
stopped. (H tap)
Allows forced operation of indoor unit.
Target evaporation temperature for cooling
Target condensation temperature for heating
Changes the temperature condition for defrost and sets to
quick defrost or slow defrost.
Sets to refrigerant collection mode.
Night quiet mode
setting
Sets automatic Night quiet operation in a simple way.
The operating time is based on “Starting set” and “Ending
set”.
Night quiet mode
control starting
setting
Night quiet mode
control ending
setting
Sets starting time of Night quiet operation. (Night quiet
mode setting is also required.)
29
Capacity
precedence setting
30
Demand setting 1
31
Demand setting 2
32
Normal demand
setting
Sets ending time of Night quiet operation. (Night quiet
mode setting is also required.)
If the capacity control is required, the low noise control is
automatically released by this setting during carrying out
low noise operation and Night quiet operation.
Changes target value of power consumption when
demand control 1 is input.
Changes target value of power consumption when
demand control 2 is input.
Normally enables demand control 1 without external
input. (Effective to prevent a problem that circuit breaker
of small capacity is shut down due to large load.
Push the RETURN button (BS3) and
set to the initial status of “Setting
mode 2”.
∗ If you become unsure of how to
proceed, push the MODE button
(BS1) and return to setting mode 1.
(V2764)
Test Operation
115
Field Setting
SiEBE18-526
Setting item display
No.
5
6
Setting item
Indoor forced fan H
Indoor forced
operation
MODE
H1P
TEST
H2P
IND
H3P
C/H selection
Master Slave
H4P
H5P
Low
noise
H6P
Setting condition display
Demand
H7P
8
7
7
7
8
7
8
8
7
7
7
8
8
7
Normal operation
Indoor forced fan H
Normal operation
Indoor forced operation
High(H)
8
Te setting
8
7
7
8
7
7
7
Normal (M)
Low(L)
High(H)
9
Tc setting
8
7
7
8
7
7
8
Normal(M)
Low(L)
Quick defrost
10 Defrost setting
8
7
7
8
7
8
7
Normal
Slow defrost
21 Refrigerant recovery
mode setting
8
7
8
7
8
7
8
Refrigerant recovery: OFF
Refrigerant recovery: ON
OFF
Night quiet mode
22 setting
8
7
8
7
8
8
7
Level 1
Level 2
Level 3
About 20:00
26 Night quiet mode
control start setting
8
7
8
8
7
8
7
About 22:00
About 24:00
About 6:00
Night quiet mode
27 control end setting
8
7
8
8
7
8
8
About 7:00
About 8:00
Capacity
29 precedence setting
8
7
8
8
8
7
8
30 Demand setting 1
8
7
8
8
8
8
7
OFF
ON
60 % demand
70 % demand
80 % demand
30 % demand
31 Demand setting 2
8
7
8
8
8
8
8
40 % demand
50 % demand
32 Continuous demand
setting
116
8
8
7
7
7
7
7
OFF
ON
∗ Factory set
8777778 ∗
8777787
8777778 ∗
8777787
8777877
8777787 ∗
8777778
8777877
8777787 ∗
8777778
8777877
8777787 ∗
8777778
8777778 ∗
8777787
8777777 ∗
8777778
8777787
8777788
8777778
8777787 ∗
8777877
8777778
8777787
8777877 ∗
8777778 ∗
8777787
8777778
8777787 ∗
8777877
8777778
8777787 ∗
8777877
8777778 ∗
8777787
Test Operation
SiEBE18-526
Field Setting
c. Monitor mode
No.
To enter the monitor mode, push the
MODE button (BS1) when in “Setting
mode 1”.
Setting item
0
Various settings
5
Number of connected indoor units
14
Contents of malfunction (the
latest)
15
Contents of malfunction
(1 cycle before)
Contents of malfunction
16
(2 cycle before)
20
Contents of retry (the latest)
21
Contents of retry (1 cycle before)
22
Contents of retry (2 cycle before)
<Selection of setting item>
Push the SET button (BS2) and set
the LED display to a setting item.
LED display
H1P
H2P
H3P
H4P
H5P
H6P
Data display
H7P
9 7 7 7 7 7 7
9 7 7 7 8 7 8
9 7 7 8 8 8 7
See below
Lower 6 digits
Malfunction
code table
9 7 7 8 8 8 8
9
9
9
9
7
7
7
7
8
8
8
8
7
7
7
7
7
8
8
8
7
7
7
8
7
7
8
7
Setting item 0 Display contents of “Various settings”
Setting item
Defrost select setting
H1P H2P H3P H4P H5P H6P H7P
Short
Medium
<Confirmation on setting contents>
Long
Push the RETURN button (BS3) to
display different data of set items.
Te setting
H
M
L
Tc setting
H
M
L
9
9
9
9
9
9
9
9
9
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
8
9
7
7
7
7
7
7
7
7
7
7
8
9
7
7
7
7
7
7
7
7
7
7
8
9
7
Push the RETURN button (BS3) and
switches to the initial status of
“Monitor mode”.
∗ Push the MODE button (BS1) and
returns to “Setting mode 1”.
(V2765)
Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and
enter the data for each setting.
H Data such as addresses and number of units is expressed as binary numbers; the two
ways of expressing are as follows:
9 797997
16
32
Test Operation
4
8
The No. 5 cool/heat unified address is expressed as a binary
number consisting of the lower 6 digits. (0 - 63)
1
2
In c the address is 000110 (binary number), which translates to
4 + 2 = 6 (base 10 number). In other words, the address is 6.
117
Field Setting
3.2
SiEBE18-526
Detail of Setting Mode
3.2.1 Cool / Heat Mode Switching
There are the following 2 cool/heat switching modes.
c Set cool/heat separately for each outdoor unit system by indoor unit remote controller.
d Set cool/heat separately for each outdoor unit system by cool/heat switching remote
controller.
c Set Cool/Heat Separately for Each Outdoor System by Indoor Unit Remote Controller
‹ Set outdoor unit PC board DS1-1 to “indoor” (factory set).
‹ Set cool/heat switching to “individual” for “Setting mode 1” (factory set).
C/H SELECT
TEST
MODE
L.N.O.P. DEMAND
IND
MALFNC.
H1P
H2P
H3P
MASTER SLAVE
H4P
H5P
H6P
H7P
C/H SELECT
O
Dip SW.
DS1-1
I
C/H SELECT R.C.
A
B
C
TO BP
F1
F2
F1 • F2
F1 • F2
BP unit
BP unit
F1
F2
(Q0405)
118
Test Operation
SiEBE18-526
Field Setting
d Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Controller
‹ Set outdoor unit PC board DS1-1 to “outdoor” (factory set).
‹ Set cool/heat switching to “individual” for “Setting mode 1” (factory set).
TEST
C/H SELECT
IND MASTER SLAVE
MODE MALFNC.
H1P
H2P
O
H3P
H4P
H5P
L.N.O.P. DEMAND
H6P
H7P
C/H SELECT
Dip SW.
DS1-1
I
C/H SELECT R.C.
A
B
C
C/H select
remote
control
TO BP
F1
F2
F1
F2
F1 • F2
F1 • F2
BP unit
BP unit
(Q0406)
Test Operation
119
Field Setting
SiEBE18-526
3.2.2 Setting of Low Noise Operation and Demand Operation
Setting of Low Noise Operation
By connecting the external contact input to the low noise input of the outdoor unit external
control adaptor (optional), you can lower operating noise by 2-3 dB.
A. When the low noise operation is carried out by external instructions (with the use
of the outdoor unit external control adaptor)
1. Set “External low noise / Demand YES/NO setting” to “External low noise / Demand YES”.
(Set by Setting Mode 2)
2. Set “External low noise level setting” on the outdoor unit PCB, as the need arises.
(Lower noise operation can be carried out by “Mode 2” than by “Mode 1”, and by “Mode 3”
than by “Mode 2”.)
3. Set “Capacity precedence setting” on the outdoor unit PCB, as the need arises.
(If set to “ON”, when air conditioning load gets higher, the low noise instructions are
neglected to switch to normal operation.) (Set by Setting Mode 2)
B. When the low noise operation is carried out automatically at night (The outdoor unit
external control adaptor is not required)
1. Set “Night quiet mode setting” on the outdoor unit PCB. (Set by Setting Mode 2)
(Lower noise operation can be carried out by “Mode 2” than by “Mode 1”, and by “Mode 3”
than by “Mode 2”.)
2. Set “Night quiet mode start setting” on the outdoor unit PCB, as the need arises. (Set by
Setting Mode 2)
(Since the time is presumed in accordance with the outdoor temperature, the starting time is
a target only.)
3. Set “Night quiet mode end setting” on the outdoor unit PCB, as the need arises.
(Set by Setting Mode 2)
(Since the time is presumed in accordance with the outdoor temperature, the ending time is
a target only.)
4. Set “Capacity precedence setting” on the outdoor unit PCB, as the need arises.
(Set by Setting Mode 2)
(If set to “ON”, when air conditioning load gets higher, the status is switched to normal
operation even at night.)
120
Test Operation
SiEBE18-526
Field Setting
Image of operation in the case of A
If capacity precedence is set in
“Capacity precedence setting”,
the fan speed will be increased
according to the load of air
conditioning when load is heavier.
Operation sound
Rated operation
sound
Operation sound of
mode 1
Operation sound of
mode 2
Operation sound of
mode 3
Low noise mode instructing
Low noise of approx. 2 to 3 dB
(The power consumption may
be decreased by about 10%)
Low noise of approx. 3 to 5 dB
(The power consumption may
be decreased by about 20%)
Low noise of approx. 5 to 8 dB
(The power consumption may
be decreased by about 30%)
Operation sound during low
noise mode is instructed can
be set with “External low
noise level setting”
(Factory setting is “Mode 2”.)
Operation sound level set with “External low noise setting”
(V3169)
Image of operation in the case of B
If capacity precedence is set in “Capacity
precedence setting”, the fan speed will be
increased according to the load of air
conditioning when load is heavier.
Operation sound
Time set with “Night quiet mode start setting”
Time set with “Night quiet mode end setting”
Rated operation
sound
Operation sound during
Night quiet mode is
instructed can be set with
“Night quiet mode level
setting”
(Factory setting is “OFF”.)
Night time
Operation sound
of mode 1
Operation sound
of mode 2
Operation sound
of mode 3
Operation sound level set with
“Night quiet mode setting”
PM 8:00
PM 10:00
PM 0:00
AM 6:00 AM 7:00 AM 8:00
Set with “Night quiet mode start setting”.
(Factory setting is “PM 10:00”.)
Set with “Night quiet mode end setting”.
(Factory setting is “AM 8:00”.)
(Q0399)
Image of operation in the case of A, B
Operation sound
Time set with “Night quiet mode start setting”
If capacity precedence is set in “Capacity
precedence setting”, the fan speed will be
increased according to the load of air
Time set with “Night quiet mode end setting”
conditioning when load is heavier.
Rated operation
sound
* Night time
Operation sound
of mode 1
Operation sound
of mode 2
Operation sound
of mode 3
* Operation sound
level set with
“Night quiet mode
setting”
Low noise mode instructing
Operation sound set with
“External low noise setting”
PM 8:00
PM 10:00
PM 0:00
Set with “Night quiet mode start setting”.
(Factory setting is “PM 10:00”.)
Test Operation
* Low noise mode
instructing
* Operation sound set with
“External low noise setting”
AM 6:00 AM 7:00 AM 8:00
Set with “Night quiet mode end setting”.
(Factory setting is “AM 8:00”.)
Operation sound during low noise
mode is instructed can be set with
“External low noise level setting”
(Factory setting is “Mode 2”.)
Operation sound during Night quiet
mode is instructed can be set with
“Night quiet mode level setting”
(Factory setting is “OFF”.)
When external low noise
instruction is receivied during
the operation with night-time
low noise mode.
Mode 2 precedes Mode 1 and
Mode 3 precedes Mode 2.
(Q0400)
121
Field Setting
SiEBE18-526
Setting of Demand Operation
By connecting the external contact input to the demand input of the outdoor unit external control
adaptor (optional), the power consumption of unit operation can be saved suppressing the
compressor operating condition.
A. When the demand operation is carried out by external instructions (with the use of the
outdoor unit external control adaptor).
„ Set the "External low noise / Demand YES / NO setting" switch on the outdoor unit PCB to
the "External low noise / Demand YES".
(Set by Setting Mode 2)
„ Set the "Demand 1 level setting" on the outdoor unit PCB, as the need arises.
(During the demand level 1 instruction, the power consumption can be saved to 80%, 70%
or 60% of the rated value respectively.)
B. When the continuous demand operation is carried out. (Use of the outdoor unit
external control adaptor is not required.)
„ Set the "Continuous demand setting" on the outdoor unit PCB.
„ If the "Continuous demand setting" is set to the "Continuous demand 1 fixing", set the
"Demand 1 setting" on the outdoor unit PCB, as the need arises.
(During the continuous demand level 1 operation, the power consumption can be saved to
80%, 70% or 60% of the rated value respectively.)
122
Test Operation
SiEBE18-526
Field Setting
Image of operation in the case of A
Power consumption
Rated power consumption
80 % of rated power consumption
70 % of rated power consumption
60 % of rated power consumption
Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing
Power consumption set by
"Demand 1 level setting".
40 % of rated power consumption
Forced thermostat OFF
(Fan operation)
The power
consumption during
the demand level 1
instructing can be
set with the
"Demand 1 level
setting".
("70 % of rated
power consumption"
has been set at
factory.)
(V3081)
Image of operation in the case of B
Power consumption
Rated power consumption
80 % of rated power consumption
70 % of rated power consumption
60 % of rated power consumption
40 % of rated power consumption The power consumption set with "Demand 1 level setting".
When the
"Continuous demand
setting" is set to ON
("OFF" has been set
at factory.) , the
power consumption
can be set with the
"Demand 1 level
setting". ("70 % of
rated power
consumption" has
been set at factory.)?
Forced thermostat OFF
(Fan operation)
(V3082)
Image of operation in the case of A and B
The power
consumption can be
set with the
"Demand 1 level
setting". ("70 % of
rated power
consumption" has
been set at factory.)
Power consumption
Rated power consumption
80 % of rated power consumption
70 % of rated power consumption
60 % of rated power consumption
The power consumption set with "Demand 1 level setting".
40 % of rated power consumption
Forced thermostat OFF
(Fan operation)
HDemand level 2 instructing HDemand level 3 instructing
HDuring continuous demand operation,
when the external demand instruction is
received repeatedly, the instruction with
higher demand level has the precedence.
(V3083)
Test Operation
123
Field Setting
SiEBE18-526
Detailed Setting Procedure of Low Noise Operation and Demand Control
1. Setting mode 1 (H1P off)
c In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 2 is entered and
H1P lights.
During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are
displayed.
2. Setting mode 2 (H1P on)
c In setting 1, push and hold the BS1 (MODE button) for more than 5 seconds. → Setting
mode 2 is entered and H1P lights.
d Push the BS2 (SET button) several times and match the LED display with the Setting No.
you want.
e Push the BS3 (RETURN button) one time, and the present setting content is displayed.
→ Push the BS2 (SET button) several times and match the LED display with the setting
content (as shown below) you want.
f Push the BS3 (RETURN button) two times. → Returns to c.
g Push the BS1 (MODE button) one time. → Returns to the setting mode 1 and turns H1P off.
124
Test Operation
SiEBE18-526
Field Setting
d
c
Settin
g No.
Setting
contents
e
Setting No. indication
Setting No. indication
Setting
contents
H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P
22
Night quiet
mode
setting
{
z
z
z
z
z
z
{
z
{
z
{
{
z
H1P H2P H3P H4P H5P H6P H7P
OFF
(Factory
setting)
{
z
z
z
z
z
z
{
{
{
{
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
{
{
z
{
z
{
{
{
z
z
z
z
{
z
{
{
z
z
z
z
z
z
{
z
z
z
z
{
{
z
z
z
z
{
z
{
{
{
z
z
z
z
z
z
z
z
z
{
z
z
z
z
{
z
{
z
AM 8:00
(Factory
setting)
{
z
z
z
{
z
z
Low noise
precedence
(Factory
setting)
{
z
z
z
z
z
{
Capacity
precedence
{
z
z
z
z
{
z
60 % of
rated power
consumptio
n
{
z
z
z
z
z
{
70 % of
rated power
consumptio
n (Factory
setting)
{
z
z
z
z
{
z
80 % of
rated power
consumptio
n
{
z
z
z
{
z
z
30 % of
rated power
consumptio
n
{
z
z
z
z
z
{
40 % of
rated power
consumptio
n (Factory
setting)
{
z
z
z
z
{
z
50 % of
rated power
consumptio
n
{
z
z
z
{
z
z
OFF
(Factory
setting)
{
z
z
z
z
z
{
Continuous
demand 1
fixed
{
z
z
z
z
{
z
NO
(Factory
set)
{
z
z
z
z
z
{
YES
{
z
z
z
z
{
z
Mode 1
Mode 2
Mode 3
25
{
External
low noise
setting
z
{
{
z
z
{
Mode 1
Mode 2
(Factory
setting)
Mode 3
26
Night quiet
mode start
setting
{
Night quiet
mode end
setting
{
z
{
{
z
{
z
PM 8:00
PM 10:00
(Factory
setting)
PM 0:00
27
29
30
31
32
12
{
{
z
{
{
AM 6:00
AM 7:00
Capacity
precedence
setting
{
Demand
setting 1
{
Demand
setting 2
{
Continuous
demand
setting
{
External
low noise /
Demand
setting
{
Setting mode indication section
Test Operation
z
z
z
z
z
z
{
{
{
z
z
{
{
{
z
{
{
{
{
z
{
z
{
{
z
z
Setting No. indication section
{
z
{
z
z
Setting contents indication (Initial setting)
Set contents indication section
125
Field Setting
SiEBE18-526
3.2.3 Setting of Refrigerant Recovery Mode
When carrying out the refrigerant collection on site, fully open the respective expansion valve of
BP and outdoor unit.
Both the outdoor unit and the indoor unit are forbidden to operation.
Operation
Procedure
c In setting mode 2 with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode”
to ON. The respective expansion valve of BP and outdoor units are fully opened. (H2P turns
to display “ ” (test operation) (blinks), “ ” (test operation)” and “ ” (during contralized
control) are displayed on the remote controller (only for SkyAir), and the operation is
prohibited.
d Collect the refrigerant using a refrigerant recovery unit. (See the instruction attached to the
refrigerant recovery unit for more detal.)
e Press Mode button “BS1” once and reset “Setting Mode 2”.
3.2.4 Setting of Vacuuming Mode
In order to perform vacuuming operation at site, fully open the expansion valves of BP and
outdoor units to turn on some solenoid valves.
Both the outdoor unit and the indoor unit are forbidden to operation.
Operating
procedure
c With Setting Mode 2 while the unit stops, set (B) Refrigerant recovery / Vacuuming mode to
ON. The expansion valves of BP and outdoor units fully open and some of solenoid valves
open.
(H2P blinks to indicate the test operation, and the remote controller displays “ ” (test
operation) and “ ” (during contralized control) (only for SkyAir), thus prohibiting operation.)
After setting, do not cancel “Setting Mode 2” until completion of Vacuuming operation.
d Use the vacuum pump to perform vacuuming operation.
e Press Mode button “BS1” once and reset “Setting Mode 2”.
126
Test Operation
SiEBE18-526
Field Setting
3.2.5 Check Operation
To prevent any trouble in the period of installation at site, the system is provided with a test
operation mode enabling check for incorrect wiring, stop valve left in closed, and judgment of
piping length.
CHECK OPERATION FUNCTION
LED display (H1P~H7P) (8:ON
Unit stopping
9:BLINKING 3:OFF)
3383333
Press the TEST button for 5 seconds.
Step 1
Pressure equalizing
10 sec to 10 minutes
Step 2
Cooling start control
3933338
3933383
30 sec to 200 sec
Step 3
Stability waiting operation
3933388
10 minutes
Step4~6
Judgement function
• Stop valve close check
• Wrong wiring check
3933833
3933838
3933883
3 minutes
Step 7
Pump down residual operation
3933888
To 30 seconds
Step 8
Standby for restarting
3938333
5 minutes
Completion
Test Operation
3383333
(Q0383)
127
Field Setting for SkyAir Indoor Unit
SiEBE18-526
4. Field Setting for SkyAir Indoor Unit
4.1
Explanation
Field set is carried out from the remote controller. At time of installation, or after maintenance
inspection/repair, carry out field set according to the explanation below. Incorrect settings will
cause a malfunction to occur. (The indoor unit settings are sometimes changed if optional
accessories are mounted on the indoor unit. Refer to the optional accessory manual.)
128
Test Operation
SiEBE18-526
4.2
Field Setting for SkyAir Indoor Unit
Field Setting
4.2.1 Wired Remote Controller
Note:
(Field setting must be made from the remote controller in accordance with the installation
conditions.)
„ Setting can be made by changing the “Mode number”, “FIRST CODE NO.”, and “SECOND
CODE NO.”.
„ Refer to the following procedures for Field setting.
Procedure
� When in the normal mode, press the “
” button for a minimum of four seconds, and the FIELD
SET MODE is entered.
� Select the desired MODE NO. with the “
” button.
� During group control, when setting by each indoor unit (mode No. 20, 21 and 23 have been
selected), push the “
” button and select the INDOOR UNIT NO to be set. (This operation is
unnecessary when setting by group.)
� Push the “
” upper button and select FIRST CODE NO.
� Push the “
” lower button and select the SECOND CODE NO.
� Push the “
” button once and the present settings are SET.
� Push the “
” button for about one second to return to the NORMAL MODE.
(Example) If during group setting and the time to clean air filter is set to FILTER CONTAMINATION HEAVY, SET MODE NO. to “10,” FIRST CODE NO. to “0,” and SECOND CODE NO. to “02.”
UNIT NO.
MODE NO.
SECOND
CODE NO.
FIELD
SET
MODE
FIRST
CODE NO.
2P068938-1
Test Operation
129
Field Setting for SkyAir Indoor Unit
SiEBE18-526
4.2.2 Wireless Remote Controller
Note:
Procedure
If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be
changed. Refer to the instruction manual (optional hand book) for each optional accessory.
1. When in the normal mode, push the “
” button for a minimum of four seconds,
and the FIELD SET MODE is entered.
2. Select the desired MODE NO. with the “
” button.
3. Push the “
” button and select the FIRST CODE NO.
4. Push the “
” button and select the SECOND CODE NO.
5. Push the “
” button and the present settings are SET.
6. Push the “
” button to return to the NORMAL MODE.
MODE NO.
FIELD SET MODE
3
4
5
SECOND CODE NO.
FIRST CODE NO.
2
1, 6
(S1934)
4.3
Initial Setting Contents
Setting Contents Filter
Sign
Filter Sign
Estimation of
Accumulated
Operating
Hours
High Air
Outlet
Velocity
(for
Application
to Ceiling
Higher
than 2.7m)
{
Selection
of Air
Flow
Direction
F, T, W
Air Flow
Direction
Adjust
Air Flow
Direction
Range
Setting
{
{
{
External
Static
Pressure
Long
Life
Filter
Type
Fan
Speed
Up
Simultaneous
operation
(Twin)
Indoor Models
Ceiling
Suspended
type
(FHQ)
(Heat
Pump)
FHQ
35~60
BUV1B
{
{
Ceiling
Mounted
Cassette
type
(FFQ)
(Heat
Pump)
FFQ
25~60
BV1B
{
{
130
{
Test Operation
SiEBE18-526
4.4
Field Setting for SkyAir Indoor Unit
Local Setting Mode Number
Example
To set the filter sign time to “filter contamination - heavy” for all units in a group:
Set mode No. to “10,” setting switch No. to “0,” and setting position No. to “02.”
Table (FHQ & FFQ)
Mode Setting
Setting Description
No.
Switch
Note 1
No.
10
0
Filter contamination - heavy /
Long-Life
(20)
light (Setting of operating
Type
hours for filter sign indication)
(Change setting when
reducing filter sign indication
time to half due to quick soiling
of filter)
1
Long-life filter type (Setting of filter sign
indication time)
(Change setting when Ultra-long-life filter is
installed)
2
Remote control thermostat
(Set when remote control thermostat sensor
is used.)
3
Estimation of filter operating hour
(Change setting when filter sign indication is
not used)
11
2
Indoor unit fan OFF when thermostat OFF in
(21)
cooling/heating
12
5
Automatic restart after power failure reset
(22)
*Note 4
13
0
High
Ceiling-suspended type(FHQ
(23)
Ceiling only)
1
Air flow direction selection (Change setting
when blocking kit is installed) *Note 3
4
Setting of air flow direction adjustment
range
Note:
Caution
Setting Position No. *Note 2
02
01
Light
Approx.
2,500
hours
Heavy
Approx.
1,250
hours
03
—
Long-Life Filter
—
—
Use
Not use
ON
OFF
—
—
Fan OFF
—
OFF
ON
—
2.7 m or Lower
2.7~3.5 m
—
F
T
W
Upward
Standard
Downward
1. Setting is made in all units in a group. To set for individual indoor units or to check the
setting, use the mode Nos. (with “2” in upper digit) in parentheses ( ).
2. The setting position No. is set to “01” at the factory, except for the following cases in which
“02” is set.
„ Setting of air flow direction adjustment range 13(23)-4
„ Automatic restart after power outage. 12(22)-5
„ Remote control thermostat 10(20)-2
„ Filter sign indication (only for ceiling-mounted duct type) 10(20)-3
3. Since drafts may result, carefully select the installation location.
4. When power returns, units resume the settings made before the power failure.
When “auto restart after power failure reset” is set, be sure to turn off air conditioners, then cut
off the power supply before conducting maintenance, inspection and other work. If the power
supply is cut off with the power switch left ON, air conditioners will automatically start operating
when the power supply is turned on.
5. Do not set any items other than those listed in the above table.
6. Functions that indoor units are not equipped with will not be displayed.
7. When returning to normal mode, “88” may be displayed on the LCD section of the remote
controller due to initialization operation.
Test Operation
131
Field Setting for SkyAir Indoor Unit
4.5
SiEBE18-526
Detailed Explanation of Setting Modes
4.5.1 Air Flow Direction Setting (FFQ)
Set the air flow direction of indoor units as given in the table below. (Set when optional air outlet
blocking pad has been installed.) The second code No. is factory set to “01.”
Setting Table
Mode No.
First Code No.
13 (23)
1
Second Code
No.
01
02
03
Setting
F : 4-direction air flow
T : 3-direction air flow
W : 2-direction air flow
4.5.2 Filter Sign Setting (FHQ & FFQ)
If switching the filter sign ON time, set as given in the table below.
Set Time
Filter Specs.
Setting
Contamination Light
Contamination Heavy
01
02
Long Life
2,500
1,250
4.5.3 Range of Air Flow Direction Setting (FFQ)
Make the following air flow direction setting according to the respective purpose.
Mode No.
13 (23)
First Code No.
4
Second Code No.
01
02
03
Setting
Upward (Draft prevention)
Standard
Downward (Ceiling soiling
prevention)
4.5.4 Fan Speed OFF When Thermostat is OFF (FFQ & FHQ)
When the cool/heat thermostat is OFF, you can stop the indoor unit fan by switching the setting
to “Fan OFF.”
∗ Used as a countermeasure against odor for barber shops and restaurants.
Setting Table
Mode No.
11(21)
132
First Code No.
2
Second Code No.
01
02
Setting
—
Fan OFF
Test Operation
SiEBE18-526
Field Setting for SkyAir Indoor Unit
4.5.5 Fan Speed Changeover When Thermostat is OFF (FFQ & FHQ)
By setting to “Set Fan Speed,” you can switch the fan speed to the set fan speed when the
heating thermostat is OFF.
∗ Since there is concern about draft if using “fan speed up when thermostat is OFF,” you should
take the setup location into consideration.
Setting Table
Mode No.
12(22)
First Code No.
3
Second Code No.
01
02
Setting
LL Fan Speed
Set Fan Speed
4.5.6 Wireless Setting (Address and MAIN/SUB Setting)
Explanation
If several wireless remote controller units are used together in the same room (including the
case where both group control and individual remote controller control are used together), be
sure to set the addresses for the receiver and wireless remote controller. (For group control, see
the attached installation manual for the indoor unit.) If using together with a wired remote
controller, you have to change the main/sub setting or the receiver.
Receiver Setting
Set the wireless address switch (SS2) on the transmitter board according to the table below.
1 2 3
(S1935)
No.2
No.3
1 2 3
No.1
1 2 3
Unit No.
Wireless Address
Switch (SS2)
(S1936)
(S1937)
When using both a wired and a wireless remote controller for 1 indoor unit, the wired controller
should be set to MAIN. Therefore, set the MAIN/SUB switch (SS1) of the transmitter board to
SUB.
MAIN
SUB
MAIN/SUB Switch
(SS1)
S
S
M
M
(S1938)
123
(S1939)
MS
SS2
SS1
(S1940)
After completing setting, seal off the opening of the address switch and the MAIN/SUB switch
with the attached sealing pad.
Test Operation
133
Field Setting for SkyAir Indoor Unit
Address Setting
(It is Factory Set
to “1”)
SiEBE18-526
<Setting from the remote controller>
1. Hold down the “
” button and the “
” button for at least 4 seconds, to get
the FIELD SET MODE. (Indicated in the display area in the figure at below).
2. Press the “
” button and select a multiple setting (A/b). Each time the button is
pressed the display switches between “A” and “b”.
3. Press the “
” button and “
” button to set the address.
1
2
3
4
5
6
(S1941)
Address can be set from 1 to 6, but set it to 1 ~ 3 and to same address as the receiver. (The
receiver does not work with address 4 ~ 6.)
4. Press the “
” button to enter the setting.
5. Hold down the “
” button for at least 1 second to quit the FIELD SET MODE and
return to the normal display.
3
Mode
2
Address
4
Multiple setting
1
5
Multiple Settings
A/b
When the indoor is being operating by outside control (central remote controller, etc.), it
sometimes does not respond to ON/OFF and temperature setting commands from this remote
controller. Check what setting the customer wants and make the multiple setting as shown
below.
Remote Controller
Multiple Setting
Remote Controller
Display
134
(S1942)
A: Standard
All items Displayed.
b: Multiple display
Operations set only is
displayed shortly after
execution.
Indoor Unit
Controlled by other Air For other than on Left
Conditioners and
Devices
Commands other than
ON/OFF and
Temperature Setting
Accepted. (1 LONG
BEEP or 3 SHORT
BEEPS Emitted)
All Commands Accepted (2 SHORT BEEPS)
Test Operation
SiEBE18-526
After Setting
Field Setting for SkyAir Indoor Unit
Stick the Unit No. label at decoration panel air discharge outlet as well as on the back of the
wireless remote controller.
Infrared remote control
1
Unit No. label
Decoration
panel
PRECAUTIONS
Set the Unit No. of the receiver and the wireless remote controller to be equal. If the settings
differ, the signal from the remote controller cannot be transmitted.
Test Operation
135
Field Setting for SkyAir Indoor Unit
4.6
SiEBE18-526
Centralized Group No. Setting
„ If carrying out centralized control with a central remote controller and unified ON/OFF
controller, you have to set the group No. for each group by remote controller.
„ To set the group No., first turn on the power supply of the central remote controller, unified
ON/OFF controller and indoor unit.
Centralized
Group No. Setting
by Remote
Controller
1. If the inspection/test button is pushed for 4 seconds or more when in the normal mode,
operation enters the “field set mode.”
2. Using the temperature control buttons, set the mode No. to “00.”
3. Push the inspection/test button to inspect the group No. display.
4. Using the programming time button, set the group No. for each group. (Group No. rises in
the order of 1-00, 1-01, ...1-15, 2-00 ...4-15, etc. The unified ON/OFF controller however
displays only the range of group numbers selected by the switch for setting each address.)
5. Push the timer ON/OFF button and enter the selected group No.
6. Push the inspection/test button and return to the normal mode.
MODE NO.
FIELD
SET
MODE
Group No.
(S1095)
∗ If the address has to be set individually for each unit for power consumption counting, etc., set
the mode No. to “30.”
Group No. Setting
Example
Indoor unit
F1 F2
P1·P2
F1 F2
P1·P2
F1 F2
P1·P2
1-01
1-02
Central remote control
Unified ON/OFF controller
F1
F2
Group No. for
centralized
1-00
control
F1 F2
P1·P2
F1 F2
P1·P2
P1·P2
P1·P2
No remote control
Remote control centralized control
(automatic address)
1-03
Note:
136
1-04
(S1946)
1. “F1,F2” indicates interface adaptor for SkyAir series.
2. If not using remote controllers, temporarily connect a remote controller to set the group No.,
set the group No. for centralized control, and then disconnect the controller.
Test Operation
SiEBE18-526
4.7
Field Setting for SkyAir Indoor Unit
Maintenance Mode Setting
Procedure
1. Enter the field set mode.
Continue to push the inspection / test operation button for a minimum of 4 seconds.
2. Enter the maintenance mode.
After having entered the field set mode, continue to push the inspection / test operation
button for a minimum of 4 seconds.
3. Select the mode No.
Set the desired mode No. with the up/down temperature setting button.
4. Select the unit No.
Select the indoor unit No. set with the time mode START/STOP button.
5. Carry out the necessary settings for each mode. (Modes 41, 44 and 45)
See the table below for details.
6. Enter the setting contents. (Modes 44 and 45)
Enter by pushing the timer ON/OFF button.
7. Return to the normal operation mode.
Tap the inspection / test operation button one time.
Table
Mode
No.
40
Function
Content and Operation Method Example of Remote Controller Display
Malfunction
Hysteresis
You can change the history
with the programming time updown button.
Past malfunction
code
UNIT No.
CODE
SETTING
1: Newest
~
Malfunction
hysteresis
3: Oldest
* “00” displayed for 4 and subsequent.
(S1958)
41
43
44
Sensor Data
Display
Forced Fan
ON
Individual
Setting
Select the display sensor with
the programming time updown button
Display sensor
00 Remote control sensor
01 Suction (R1T)
02 Heat exchange(R2T)
03 Heat exchange(R3T)
Turns the fan ON for each unit
individually.
Sets fan speed and air flow
direction for each unit
individually when using group
control.
Settings are made using the
“air flow direction adjust” and
“fan speed adjust” buttons.
Sensor type
Temperature
UNIT No.
Unit No.
Change
(S1954)
SETTING
(S1955)
UNIT No.
Fan 1: Low
speed 3: High
0: Upper
Air flow direction
4: Lowest
UNIT No.
CODE
45
SETTING
Changes unit No.
Set the unit No. after changing
with the programming time updown button.
SETTING
(S1956)
Field set No.
No. after change
UNIT No.
CODE
SETTING
(S1957)
Operation is not reset by malfunction code reset for inspection.
(Cannot be reset because the count is updated each time a malfunction occurs.)
Test Operation
137
Test Operation and Field Setting for RA Indoor Unit
SiEBE18-526
5. Test Operation and Field Setting for RA Indoor
Unit
5.1
Test Operation from the Remote Controller
For Heat pump
In cooling mode, select the lowest programmable temperature; in heating mode, select the
highest programmable temperature.
„ Trial operation may be disabled in either mode depending on the room temperature.
„ After trial operation is complete, set the temperature to a normal level.
(26°C to 28°C in cooling mode, 20°C to 24°C in heating mode)
„ For protection, the system disables restart operation for 3 minutes after it is turned off.
For Cooling Only
Select the lowest programmable temperature.
„ Trial operation in cooling mode may be disabled depending on the room temperature.
Use the remote control for trial operation as described below.
„ After trial operation is complete, set the temperature to a normal level (26°C to 28°C).
„ For protection, the machine disables restart operation for 3 minutes after it is turned off.
Trial Operation and Testing
1. Measure the supply voltage and make sure that it falls in the specified range.
2. Trial operation should be carried out in either cooling or heating mode.
3. Carry out the test operation in accordance with the Operation Manual to ensure that all
functions and parts, such as louver movement, are working properly.
„ The air conditioner requires a small amount of power in its standby mode. If the system is
not to be used for some time after installation, shut off the circuit breaker to eliminate
unnecessary power consumption.
„ If the circuit breaker trips to shut off the power to the air conditioner, the system will restore
the original operation mode when the circuit breaker is opened again.
Trial operation from Remote Controller
(1) Press ON/OFF button to turn on the system.
(2) Simultaneously press center of TEMP button and MODE buttons.
(3) Press MODE button twice.
(“T” will appear on the display to indicate that Trial Operation mode is selected.)
(4) Trial run mode terminates in approx. 30 minutes and switches into normal mode. To quit a
trial operation, press ON/OFF button.
(3)
(2)
ON/OFF
TEMP
(3)
138
MODE
(1) (4)
(R4294)
Test Operation
SiEBE18-526
5.2
Test Operation and Field Setting for RA Indoor Unit
Jumper Settings
5.2.1 When Two Units are Installed in One Room
When two indoor units are installed in one room, the two wireless remote controllers can be set
for different addresses.
How to set the different addresses
„ Control PCB of the indoor unit
(1) Remove the electrical box.
(2) Cut the address jumper JA on the control PCB.
„ Wireless remote controller
(1) Slide the front cover and take it off.
(2) Cut the address jumper J4.
JA
ADDRESS
J4
JA ADDRESS
J4 ADDRESS
EXIST
CUT
EXIST
CUT
1
2
1
2
(R4417)
(R4418)
5.2.2 Jumper Setting
Jumper
(On indoor PCB)
JC
JB
Test Operation
Function
Power failure
recovery function
When connected
(factory set)
Auto start
When cut
Unit does not resume operation
after recovering from a power
failure. Timer ON-OFF settings
are cleared.
Fan speed setting
Fan speed setting ; Fan rpm is set to “0”
when compressor is Remote controller
<Fan stop>
OFF on thermostat. setting
139
Test Operation and Field Setting for RA Indoor Unit
SiEBE18-526
5.2.3 Adjusting the Angle of the Intelligent Eye Sensor
FTXS20-35C
„ Once installation of the indoor unit is complete, adjust the angle of the Intelligent eye sensor
to ensure the detection area properly covers the room.
(Adjustable angle : 15° to right and left of center)
15° 15°
Intelligent-eye
sensor (R1729)
„ Gently push and slide the sensor to adjust the angle. Aim so that the sensor is pointing to the
center of the room, or to the part of the room that is most frequently used.
Moving the sensor to the left
Moving the sensor to the right
(R1730)
„ After adjusting the angle, gently wipe the sensor with a clean cloth, being careful not to
scratch the sensor.
Caution
140
„ Do not hit or violently push the Intelligent eye sensor. This can lead to damage and
malfunction.
„ Do not place large objects near the sensor. Also keep heating units or humidifiers outside
the sensor’s detection area.
Test Operation
SiEBE18-526
Part 7
System Configuration
1. System Configuration..........................................................................142
1.1 Operation Instructions ..........................................................................142
2. Instruction............................................................................................143
2.1
2.2
2.3
2.4
System Configuration
RMXS Series........................................................................................143
Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type .....................144
Ceiling Mounted Cassette Type ...........................................................216
Ceiling Suspended Type ......................................................................227
141
System Configuration
SiEBE18-526
1. System Configuration
1.1
Operation Instructions
After the installation and test operation of the room air conditioner have been completed, it
should be operated and handled as described below. Every user would like to know the correct
method of operation of the room air conditioner, to check if it is capable of cooling (or heating)
well, and to know a clever method of using it.
In order to meet this expectation of the users, giving sufficient explanations taking enough time
can be said to reduce about 80% of the requests for servicing. However good the installation
work is and however good the functions are, the customer may blame either the room air
conditioner or its installation work because of improper handling. The installation work and
handing over of the unit can only be considered to have been completed when its handling has
been explained to the user without using technical terms but giving full knowledge of the
equipment.
142
System Configuration
SiEBE18-526
Instruction
2. Instruction
2.1
RMXS Series
REGARDING USE
Super Multi Plus System air conditioner
POINTS THE CUSTOMER SHOULD BE AWARE OF
COMFORT
At startup
• After the power is initially turned on, it will take approx. 10 minutes until startup. Usually the unit will start
in 5 minutes.
At startup of heating operation
• The colder it is outside or the greater the number of indoor units, the longer the time required from the
start of operation until the emission of warm air (around 35°C). When the outside temperature is -5 to
2°C, the inside temperature is 5 to 10°C, and total indoor unit combination is 100% capacity, the first
startup of all indoor units in the morning will take approximately 20 to 30 minutes.
• Oil return operation will be performed once every 8 hours to preserve the lubrication of oil to the
compressor.
Since operation is switched to cooling cycle during heating operation in order to return the oil, heating
operation will not be possible for around 5 to 10 minutes.
Heating operation
• When the outside temperature is 28°C or higher, the unit will be set to the standby mode for protection.
OPERATING NOISE
At startup
• During startup, in order to emit warm or cool air as quickly as possible, the sound of refrigerant flowing
will be heard for a short time (1 to 2 minutes) from the outdoor unit.
At shutdown
• In order to ensure smooth startup the next time this unit is operated, the outdoor unit will continue to
operate for around 2 to 5 minutes after shutdown. (The time of continued operation depends on the
outside temperature, capacity of connected indoor units, and connection pipe length.)
Defrost
• When the outside unit is performing defrosting operation, the fan of the indoor unit will stop temporarily,
and the slight sound of refrigerant flowing will be heard.
Cooling at low outside temperatures
• During cooling operation when the outside temperature is 20°C or less, the fan of the outdoor unit will
operate at low speed to preserve capacity and the outdoor unit valve will be opened depending on the
pressure conditions, making it more likely that the sound of refrigerant flowing will be heard.
Excessive heating load
• During heating operation when the outside temperature is high (15 to 24°C), the fan of the outdoor unit
will be operated at low speed, making it more likely that the sound of refrigerant flowing will be heard from
the outdoor unit.
3PN00286-13U
System Configuration
143
Instruction
2.2
SiEBE18-526
Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type
2.2.1 Manual Contents and Reference Page
Wall Mounted Type
Model Series
FTXS20~35D
CTXS50D
FTXS20~35C
Safety Precautions
145
145
145
Names of Parts
147
150
153
Preparation before Operation H
165
165
165
AUTO, DRY, COOL, HEAT, FAN
Operation H
168
168
168
Adjusting the Air Flow Direction
170
172
174
POWERFUL Operation H
180
180
180
OUTDOOR UNIT SILENT Operation
H
181
181
181
ECONO Operation
182
—
—
—
183
183
INTELLIGENT EYE Operation
185
187
189
TIMER Operation H
191
191
191
Note for Multi System
193
193
193
194
197
200
FTXS50~71B
Read before Operation
Operation
HOME LEAVE Operation H
Care
Care and Cleaning
Trouble Shooting
Trouble Shooting
Drawing No.
211
211
211
3P142629-1B
3P119293-2H
3P098586-1G
Duct Connected Type
Floor/Ceiling
Suspended Dual Type
Floor Standing Type
FDXS25·35C
CDXS50·60C
FLXS25~60B
FVXS25~50B
Safety Precautions
145
145
145
Names of Parts
156
159
162
Preparation before Operation H
165
165
165
168
168
168
Model Series
Read before Operation
Operation
AUTO, DRY, COOL, HEAT, FAN
Operation H
Adjusting the Air Flow Direction
—
176
178
POWERFUL Operation H
180
180
180
OUTDOOR UNIT SILENT Operation
H
181
181
181
ECONO Operation
HOME LEAVE Operation H
INTELLIGENT EYE Operation
—
—
—
183
183
183
—
—
—
TIMER Operation H
191
191
191
Note for Multi System
193
193
193
203
205
208
Care
Care and Cleaning
Trouble Shooting
Trouble Shooting
Drawing No.
211
211
211
3P131999-1E
3P098587-2L
3P098587-1L
H : Illustrations are for wall mounted type FTXS20/25/35C as representative.
144
System Configuration
Instruction
SiEBE18-526
2.2.2 Safety Precautions
Safety precautions
•
•
•
•
Keep this manual where the operator can easily find them.
Read this manual attentively before starting up the unit.
For safety reason the operator must read the following cautions carefully.
This manual classifies precautions into WARNINGS and CAUTIONS. Be sure to follow all precautions below: they are
all important for ensuring safety.
WARNING
CAUTION
If you do not follow these instructions exactly, the unit may If you do not follow these instructions exactly, the unit may
cause property damage, personal injury or loss of life.
cause minor or moderate property damage or personal injury.
Never do.
Be sure to follow the instructions.
Be sure to earth the air conditioner.
Never cause the air conditioner (including the remote
control) to get wet.
Never touch the air conditioner (including the remote
control) with a wet hand.
WARNING
• In order to avoid fire, explosion or injury, do not operate the unit when harmful, among which flammable or
corrosive gases, are detected near the unit.
• It is not good for health to expose your body to the air flow for a long time.
• Do not put a finger, a rod or other objects into the air outlet or inlet. As the fan is rotating at a high speed, it
will cause injury.
• Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric
shocks, fire etc.
For repairs and reinstallation, consult your Daikin dealer for advice and information.
• The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any
refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas
heaters, kerosene heaters or gas range.
• If the air conditioner is not cooling (heating) properly, the refrigerant may be leaking, so call your dealer.
When carrying out repairs accompanying adding refrigerant, check the content of the repairs with our service staff.
• Do not attempt to install the air conditioner by your self. Incorrect work will result in water leakage, electric shocks or
fire. For installation, consult the dealer or a qualified technician.
• In order to avoid electric shock, fire or injury, if you detect any abnormally such as smell of fire, stop the operation and
turn off the breaker. And call your dealer for instructions.
CAUTION
• The air conditioner must be earthed. Incomplete earthing may result in electric shocks. Do not connect the
earth line to a gas pipe, water pipe, lightning rod, or a telephone earth line.
• In order to avoid any quality deterioration, do not use the unit for cooling precision instruments, food, plants,
animals or works of art.
• Never expose little children, plants or animals directly to the air flow.
• Do not place appliances which produce open fire in places exposed to the air flow from the unit or under the
indoor unit. It may cause incomplete combustion or deformation of the unit due to the heat.
• Do not block air inlets nor outlets. Impaired air flow may result in insufficient performance or trouble.
System Configuration
145
Instruction
SiEBE18-526
• Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard.
• Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions,
moisture in the air may condense and drip.
• After a long use, check the unit stand and fittings for damage.
• Do not touch the air inlet and aluminum fins of outdoor unit. It may cause injury.
• The appliance is not intended for use by young children or infirm persons without supervision.
• Young children should be supervised to ensure that they do not play with the appliance.
• To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the
air conditioner.
• Before cleaning, be sure to stop the operation, turn the breaker off or pull out the supply cord.
• Do not connect the air conditioner to a power supply different from the one as specified. It may cause
trouble or fire.
• Depending on the environment, an earth leakage breaker must be installed. Lack of an earth leakage breaker may
result in electric shocks.
• Arrange the drain hose to ensure smooth drainage. Incomplete draining may cause wetting of the building, furniture
etc.
• Do not operate the air conditioner with wet hands.
• Do not wash the indoor unit with excessive water, only use a slightly wet cloth.
• Do not place things such as vessels containing water or anything else on top of the unit. Water may
penetrate into the unit and degrade electrical insulations, resulting in an electric shock.
Installation site
To install the air conditioner in the following types of environments, consult the dealer.
• Places with an oily ambient or where steam or soot occurs.
• Salty environment such as coastal areas.
• Places where sulfide gas occurs such as hot springs.
• Places where snow may block the outdoor unit.
The drain from the outdoor unit must be discharged to a place of good drainage.
Consider nuisance to your neighbours from noises
For installation, choose a place as described below.
• A place solid enough to bear the weight of the unit which does not amplify the operation noise or vibration.
• A place from where the air discharged from the outdoor unit or the operation noise will not annoy your
neighbours.
Electrical work
• For power supply, be sure to use a separate power circuit dedicated to the air conditioner.
System relocation
• Relocating the air conditioner requires specialized knowledge and skills. Please consult the dealer if
relocation is necessary for moving or remodeling.
146
System Configuration
Instruction
SiEBE18-526
2.2.3 Names of Parts
FTXS20/25/35D, CTXS50D
Names of parts
Indoor Unit
1
2
3
4
5
7
11
10
6
9
8
16
14
13
15
ON/OFF
System Configuration
12
147
Instruction
SiEBE18-526
Outdoor Unit
17
22
19
20
18
21
Indoor Unit
1. Air filter
2. Titanium Apatite Photocatalytic
Air-Purifying Filter:
• These filters are attached to the inside of the air
filters.
3. Air inlet
4. Front panel
5. Panel tab
6. Room temperature sensor:
• It senses the air temperature around the unit.
7. INTELLIGENT EYE sensor:
• It detects the movements of people and
automatically switches between normal
operation and energy saving operation.
8. Display
9. Air outlet
10. Flaps (horizontal blades)
11. louvers (vertical blades):
• The louvers are inside of the air outlet.
12. Indoor Unit ON/OFF switch:
• Push this switch once to start operation. Push
once again to stop it.
• The operation mode refers to the following
table.
Temperature Air flow
Mode
rate
setting
F(C)TKS COOL
AUTO
22°C
F(C)TKS AUTO
AUTO
25°C
• This switch is useful when the remote control is
missing.
13. Operation lamp (green)
14. TIMER lamp (yellow)
15. INTELLIGENT EYE lamp (green)
16. Signal receiver:
• It receives signals from the remote control.
• When the unit receives a signal, you will hear a
short beep.
• Operation start...............beep-beep
• Settings changed...........beep
• Operation stop...............beeeeep
Outdoor Unit
17. Air inlet: (Back and side)
18. Air outlet
19. Refrigerant piping and inter-unit cable
20. Drain hose
21. Earth terminal:
• It is inside of this cover.
22. Outside air temperature sensor:
• It senses the ambient temperature around
the unit.
Appearance of the outdoor unit may differ from some models.
148
System Configuration
Instruction
SiEBE18-526
Remote control
1
2
5
ECONO
ON/OFF
3
POWERFUL
TEMP
6
4
7
8
13
MODE
FAN
SWING
SILENT COMFORT SENSOR
ON
CANCEL
9
10
12
11
16
OFF
TIMER
18
17
15
14
<ARC433A50, 43>
1. Signal transmitter:
• It sends signals to the indoor unit.
2. Display:
• It displays the current settings.
(In this illustration, each section is shown with all
its displays ON for the purpose of explanation.)
3. ECONO button:
ECONO operation
4. POWERFUL button:
POWERFUL operation
5. TEMPERATURE adjustment buttons:
• It changes the temperature setting.
6. ON/OFF button:
• Press this button once to start operation.
Press once again to stop it.
7. MODE selector button:
• It selects the operation mode.
(AUTO/DRY/COOL/HEAT/FAN)
System Configuration
8. SILENT button: OUTDOOR UNIT SILENT
operation
9. FAN setting button:
• It selects the air flow rate setting.
10. SWING button:
• Ajusting the Air Flow Direction.
11. COMFORT AIRFLOW button: COMFORT
AIRFLOW operation
12. SENSOR button: INTELLIGENT EYE operation
13. ON TIMER button
14. OFF TIMER button
15. TIMER Setting button:
• It changes the time setting.
16. TIMER CANCEL button:
• It cancels the timer setting.
17. CLOCK button
18. RESET button:
• Restart the unit if it freezes.
• Use a thin object to push.
149
Instruction
SiEBE18-526
FTXS20/25/35C
Names of parts
Indoor Unit
1
2
3
4
5
6
11
10
9
7
8
12
13
14
15
16
ON
OFF
150
System Configuration
Instruction
SiEBE18-526
Outdoor Unit
17
22
19
20
21
18
Indoor Unit
1. Air filter
2. Air purifying filter with photocatalytic
deodorizing function:
• These filters are attached to the inside of the
air filters.
3. Air inlet
4. Front grille
5. Grille tab
6. Room temperature sensor:
• It senses the air temperature around the unit.
7. INTELLIGENT EYE sensor:
• It detects the movements of people and
automatically switches between normal
operation and energy saving operation.
8. Display
9. Air outlet
10. Flaps (horizontal blades)
11. Louvres (vertical blades):
• The louvres are inside of the air outlet.
12. Indoor UnitON/OFF switch:
• Push this switch once to start operation.
Push once again to stop it.
• The operation mode refers to the following
table.
Temperature Air flow
Mode
setting
rate
22°C
FTKS COOL
AUTO
FTXS AUTO
AUTO
25°C
13.
14.
15.
16.
• This switch is useful when the remote control is
missing.
Operation lamp (green)
TIMER lamp (Yellow)
HOME LEAVE lamp (red)
Signal receiver:
• It receives signals from the remote control.
• When the unit receives a signal, you will hear a
short beep.
• Operation start.............. beep-beep
• Settings changed.......... beep
• Operation stop.............. beeeeep
Outdoor Unit
17. Air inlet: (Back and side)
18. Air outlet
19. Refrigerant piping and inter-unit cable
20. Drain hose
21. Earth terminal:
• It is inside of this cover.
22. Outside air temperature sensor:
• It senses the ambient temperature around the
unit.
Appearance of the outdoor unit may differ from some models.
System Configuration
151
Instruction
SiEBE18-526
Remote Control
1
ON
2
C
5
HOME LEAVE
ON/OFF
3
POWERFUL
TEMP
6
4
7
MODE
SILENT
FAN
SWING
SENSOR
8
12
9
10
11
ON
CANCEL
15
16
OFF
TIMER
14
13
<ARC433A1, A2>
1. Signal transmitter:
• It sends signals to the indoor unit.
2. Display:
• It displays the current settings.
(In this illustration, each section is shown
with all its displays ON for the purpose of
explanation.)
3. HOME LEAVE button:
for HOME LEAVE operation
4. POWERFUL button:
for POWERFUL operation
5. TEMPERATURE adjustment buttons:
• It changes the temperature setting.
6. ON/OFF button:
• Press this button once to start operation.
Press once again to stop it.
7. MODE selector button:
• It selects the operation mode.
152
8.
9.
10.
11.
12.
13.
14.
15.
16.
(AUTO/DRY/COOL/HEAT/FAN)
SILENT button: for OUTDOOR UNIT
SILENT operation
FAN setting button:
• It selects the air flow rate setting.
SWING button
SENSOR button: for INTELLIGENT EYE
operation
ON TIMER button
OFF TIMER button
TIMER Setting button:
• It changes the time setting.
TIMER CANCEL button:
• It cancels the timer setting.
CLOCK button
System Configuration
Instruction
SiEBE18-526
FTXS50/60/71B
Names of parts
Indoor Unit
4
The illustration shows a 50-class unit
2
9
10
1
5
3
15
8
6
7
11
12
14
13
Main unit control panel
17
16
System Configuration
153
Instruction
SiEBE18-526
Outdoor Unit
18
20
21
22
19
Indoor Unit
1. Air filter
2. Air purifying filter with photocatalytic
deodorizing function:
• These filters are attached to the inside of the air
filters.
3. Air inlet
4. Front grille
5. Grille tab
6. INTELLIGENT EYE sensor:
• It detects the movements of people and
automatically switches between normal operation
and energy saving operation.
7. Display
8. Air outlet
9. Flap (horizontal blade)
10. Louvers (vertical blades):
• The Louvers are inside of the air outlet.
11. Operation lamp (green)
12. TIMER lamp (yellow)
13. HOME LEAVE lamp (red):
• Lights up when you use HOME LEAVE
Operation.
14. Indoor Unit ON/OFF switch:
• Push this switch once to start operation.
Push once again to stop it.
• The operation mode refer to the following table.
Temperature Air flow
Mode
setting
rate
AUTO
22°C
FTKS COOL
AUTO
25°C
FTXS AUTO
• This switch is useful when the remote control is
missing.
15. Packaging materials: 50 class only
• If any packaging materials are included, please
remove before operating.
16. Room temperature sensor:
• It senses the air temperature around the unit.
17. Signal receiver:
• It receives signals from the remote control.
• When the unit receives a signal, you will hear a
short beep.
• Operation start .............. beep-beep
• Settings changed........... beep
• Operation stop............... beeeeep
Outdoor Unit
18. Air inlet: (Back and side)
21. Drain hose
19. Air outlet
22. Earth terminal:
• It is inside of this cover.
20. Refrigerant piping and inter-unit cable
Appearance of the outdoor unit may differ from some models.
154
System Configuration
Instruction
SiEBE18-526
Remote control
1
ON
2
C
5
HOME LEAVE
ON/OFF
3
POWERFUL
TEMP
6
4
7
MODE
SILENT
FAN
SENSOR SWING
8
13
ON
9
11
10
12
CANCEL
16
OFF
17
TIMER
15
14
<ARC433A21, A22 >
1. Signal transmitter:
• It sends signals to the indoor unit.
2. Display:
• It displays the current settings.
(In this illustration, each section is shown with all
its displays ON for the purpose of explanation.)
3. HOME LEAVE button:
for HOME LEAVE operation
4. POWERFUL button:
for POWERFUL operation
5. TEMPERATURE adjustment buttons:
• It changes the temperature of time setting.
6. ON/OFF button:
• Press this button once to start operation.
Press once again to stop it.
7. MODE selector button:
• It selects the operation mode.
(AUTO/DRY/COOL/HEAT/FAN)
System Configuration
8. SILENT button: for OUTDOOR UNIT
SILENT operation
9. FAN setting button:
• It selects the air flow rate setting.
10. SENSOR button: for INTELLIGENT EYE
operation
11. SWING button
• Flap (Horizontal blade)
12. SWING button
• Louver (Vertical blades)
13. ON TIMER button
14. OFF TIMER button
15. TIMER Setting button:
• It changes the time setting.
16. TIMER CANCEL button:
• It cancels the timer setting.
17. CLOCK button
155
Instruction
SiEBE18-526
FDXS25/35C, CDXS50/60C
Names of parts
Indoor Unit
1
5
2
4
3
6
8
7
9
10
156
System Configuration
Instruction
SiEBE18-526
Outdoor Unit
11
12
13
15
14
Indoor Unit
1. Air outlet
2. Air outlet grille (Field supply)
• Appearance of the Air outlet grille and Air inlet
grille may differ with some models.
3. Display, Control panel
4. Suction grille (Option)
• Appearance of the suction grille and Air inlet
grille may differ with some models.
10. Indoor Unit ON/OFF switch
• Push this switch once to start operation.
Push once again to stop it.
• This switch is useful when the remote control is
missing.
• The operation mode refers to the following table.
Mode
CDKS
CDXS
5. Air inlet
6. Room temperature sensor:
• It senses the air temperature around the unit.
COOL
AUTO
Temperature
setting
22°C
25°C
Air flow
rate
AUTO
AUTO
7. Operation lamp (green)
8. TIMER lamp (yellow)
9. HOME LEAVE lamp (red)
• LIghts up when you use HOME LEAVE
operation.
Outdoor Unit
12. Refrigerant piping and inter-unit cable
14. Earth terminal:
• It is inside of this cover.
13. Drain hose
15. Air outlet
11. Air inlet: (Back and side)
Appearance of the outdoor unit may differ from some models.
System Configuration
157
Instruction
SiEBE18-526
Remote Control
1
ON
2
C
5
HOME LEAVE
ON/OFF
3
POWERFUL
TEMP
6
4
9
7
MODE
SILENT
FAN
8
10
ON
CANCEL
13
14
OFF
TIMER
12
11
<ARC433A7, A8>
1. Signal transmitter:
• It sends signals to the indoor unit.
2. Display:
• It displays the current settings.
(In this illustration, each section is shown
with all its displays ON for the purpose of
explanation.)
3. HOME LEAVE button:
for HOME LEAVE operation
4. POWERFUL button:
for POWERFUL operation
5. TEMPERATURE adjustment buttons:
• It changes the temperature setting.
6. ON/OFF button:
• Press this button once to start operation.
Press once again to stop it.
158
7. MODE selector button:
• It selects the operation mode.
(AUTO/DRY/COOL/HEAT/FAN)
8. SILENT button: for OUTDOOR UNIT
SILENT operation
9. FAN setting button:
• It selects the air flow rate setting.
10. ON TIMER button
11. OFF TIMER button
12. TIMER Setting button:
• It changes the time setting.
13. TIMER CANCEL button:
• It cancels the timer setting.
14. CLOCK button
System Configuration
Instruction
SiEBE18-526
FLXS25/35/50/60B
Names of parts
Indoor Unit
The indoor unit can be installed either to the ceiling or to a wall. The descriptions contained in this
manual show the case when installation is being carried out to the ceiling. (The methods of operation
used are the same when installing to a wall.)
3
2
1
4
ON
OFF
5
9
8
7
6
11
10
12
14
13
Opening the front grille
How to open the front grille
CAUTION
• Before opening the front grille, be sure to stop the operation and turn the breaker OFF.
System Configuration
159
Instruction
SiEBE18-526
Outdoor Unit
15
17
18
19
16
Indoor Unit
1. Louvres (vertical blades):
The louvres are inside of the air outlet.
2. Air outlet
3. Flap (horizontal blade)
4. Grille tab
5. Air inlet
6. Display
7. Air filter
13. Indoor unit ON/OFF switch
• Push this switch once to start operation.
Push once again to stop it.
• The operation mode refers to the following
table.
Temperature Air flow
Mode
setting
rate
COOL
FLKS
AUTO
22°C
AUTO
AUTO
25°C
FLXS
• Push the switch using an object with a sharp
tip, such as a pen.
• This switch is useful when the remote control
is missing.
8. Photocatalytic deodorizing filter or Air
purifying filter:
• These filters are attached to the inside of the air
filters.
9. Front grille
10. Operation lamp (green)
11. TIMER lamp (yellow)
12. HOME LEAVE lamp (red):
Lights up when you use HOME LEAVE
Operation.
14. Signal receiver:
• It receives signals from the remote control.
• When the unit receives a signal, you will hear
a short beep.
• Operation start..............beep-beep
• Settings changed..........beep
• Operation stop..............beeeeep
Outdoor Unit
15. Air inlet: (Back and side)
18. Drain hose
16. Air outlet
19. Earth terminal:
• It is inside of this cover.
17. Refrigerant piping and inter-unit cable
Appearance of the outdoor unit may differ from some models.
160
System Configuration
Instruction
SiEBE18-526
Remote Control
1
ON
2
C
5
HOME LEAVE
ON/OFF
3
TEMP
POWERFUL
6
4
7
MODE
SILENT
FAN
SWING
9
10
CANCEL
14
8
11
ON
15
OFF
TIMER
13
12
<ARC433A5, A6>
1. Signal Transmitter:
• It sends signals to the indoor unit.
2. Display:
• It displays the current settings.
(In this illustration, each section is shown
with all its displays ON for the purpose of
explanation.)
3. HOME LEAVE button:
for HOME LEAVE operation
4. POWERFUL button:
for POWERFUL operation
5. TEMPERATURE adjustment buttons:
• It changes the temperature setting.
6. ON/OFF button:
• Press this button once to start operation.
Press once again to stop it.
System Configuration
7. MODE selector button:
• It selects the operation mode.
(AUTO/DRY/COOL/HEAT/FAN)
8. OUTDOOR UNIT SILENT button
9. FAN setting button:
• It selects the air flow rate setting.
10. SWING button
11. ON TIMER button
12. OFF TIMER button
13. TIMER Setting button:
• It changes the time setting.
14. TIMER CANCEL button:
• It cancels the timer setting.
15. CLOCK button
161
Instruction
SiEBE18-526
FVXS25/35/50B
Names of parts
Indoor Unit
1
2
8
3
10
7
6
ON
OFF
2
9
11
4
5
Opening the front grille
How to open the grille
Air outlet selection switch
12 13
•
•
This setting blows air from upper outlet only.
This setting automatically decides a blow
pattern depending on mode and conditions.
• This setting is
recommended.
14
15
• The unit is shipped from the
factory with this setting.
Air outlet
selection
CAUTION
Before opening the front grille, be sure to stop the operation and turn the breaker OFF.
Do not touch the metal parts on the inside of the indoor unit, as it may result in injury.
162
System Configuration
Instruction
SiEBE18-526
Outdoor Unit
16
17
18
19
20
Indoor Unit
• The operation mode refers to the following
table.
1. Photocatalytic deodorizing filter and
Air purifying filter:
• These filters are attached to the inside of the air
filters.
2. Air outlet
FVKS
FVXS
3. Display
6. Air inlet
7. Air filter
8. Flap (horizontal blade)
9. Operation lamp (green)
10. TIMER lamp (yellow)
11. HOME LEAVE lamp (red)
12. Indoor Unit ON/OFF switch:
• Push this switch once to start operation.
Push once again to stop it.
Air flow
rate
AUTO
AUTO
• This switch is useful when the remote control is
missing.
4. Front grille
5. Louvres (vertical blades):
• The louvres are inside of the air outlet.
Temperature
setting
22°C
COOL
25°C
AUTO
Mode
13. Signal receiver:
• Signals are received from the remote control.
• When the unit receives a signal, you will hear a
short beep.
• Operation start................. beep-beep
• Settings changed............. beep
• Operation stop................. beeeeep
14. Air outlet selection switch
15. Room temperature sensor:
• It senses the air temperature around the unit.
Outdoor Unit
16. Air inlet: (Back and side)
17. Refrigerant piping and inter-unit cable
19. Earth terminal:
• It is inside of this cover.
18. Drain hose
20. Air outlet
Appearance of the outdoor unit may differ from some models.
System Configuration
163
Instruction
SiEBE18-526
Remote Control
1
ON
2
C
5
HOME LEAVE
ON/OFF
3
TEMP
POWERFUL
6
4
7
MODE
SILENT
FAN
SWING
9
10
CANCEL
14
8
11
ON
15
OFF
TIMER
12
13
<ARC433A5, A6>
1. Signal Transmitter:
• It sends signals to the indoor unit.
2. Display:
• It displays the current settings.
(In this illustration, each section is shown
with all its displays ON for the purpose of
explanation.)
3. HOME LEAVE button:
for HOME LEAVE operation
4. POWERFUL button:
for POWERFUL operation
5. TEMPERATURE adjustment buttons:
• It changes the temperature setting.
6. ON/OFF button:
• Press this button once to start operation.
Press once again to stop it.
• It selects the operation mode.
(AUTO/DRY/COOL/HEAT/FAN)
8. SILENT button: for OUTDOOR UNIT
SILENT operation
9. FAN setting button:
• It selects the air flow rate setting.
10. SWING button
11. ON TIMER button
12. TIMER Setting button:
• It changes the time setting.
13. OFF TIMER button
14. TIMER CANCEL button:
• It cancels the timer setting.
15. CLOCK button
7. MODE selector button:
164
System Configuration
Instruction
SiEBE18-526
2.2.4 Preparation before Operation
Preparation Before Operation
To set the batteries
1. Press
with a finger and slide the
front cover to take it off.
Position + and
– correctly!
2
–
+
+
2. Set two dry batteries (AAA).
–
3. Set the front cover as before.
3
1
ATTENTION
About batteries
• When replacing the batteries, use batteries of the same type, and replace the two old batteries
together.
• When the system is not used for a long time, take the batteries out.
• We recommend replacing once a year, although if the remote control display begins to fade or if
reception deteriorates, please replace with new alkali batteries. Using manganese batteries reduces
the lifespan.
• The attached batteries are provided for the initial use of the system.
The usable period of the batteries may be short depending on the manufactured date of the air
conditioner.
System Configuration
165
Instruction
SiEBE18-526
Preparation Before Operation
To operate the remote
control
• To use the remote control, aim the transmitter at
the indoor unit. If there is anything to block
signals between the unit and the remote control,
such as a curtain, the unit will not operate.
• Do not drop the remote control. Do not get it wet.
• The maximum distance for communication is
about 7 m.
Receiver
To fix the remote control
holder on the wall
1. Choose a place from where the
signals reach the unit.
2. Fix the holder to a wall, a pillar, or
similar location with the screws
procured locally.
3. Place the remote control in the
remote control holder.
Remote control
holder
Set.
• To remove, pull it upwards.
ATTENTION
About remote control
• Never expose the remote control to direct sunlight.
• Dust on the signal transmitter or receiver will reduce the sensitivity. Wipe off dust with soft cloth.
• Signal communication may be disabled if an electronic-starter-type fluorescent lamp (such as
inverter-type lamps) is in the room. Consult the shop if that is the case.
• If the remote control signals happen to operate another appliance, move that appliance to
somewhere else, or consult the shop.
166
System Configuration
Instruction
SiEBE18-526
To set the clock
1. Press “CLOCK button”.
is displayed.
C
blinks.
2. Press “TIMER setting button” to
set the clock to the present time.
Holding down “
” or “
” button rapidly
increases or decreases the time display.
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
3. Press “CLOCK button”.
blinks.
Turn the breaker ON
Turning ON the breaker opens the flap, then
closes it again. (This is a normal procedure.)
ON
SWING
SENSOR
2
CANCEL
1, 3
OFF
TIMER
NOTE
Tips for saving energy
• Be careful not to cool (heat) the room too much.
Keeping the temperature setting at a moderate level helps save energy.
• Cover windows with a blind or a curtain.
Blocking sunlight and air from outdoors increases the cooling (heating) effect.
• Clogged air filters cause inefficient operation and waste energy. Clean them
once in about every two weeks.
Recommended temperature setting
For cooling: 26°C – 28°C
For heating: 20°C – 24°C
Please note
• The air conditioner always consumes 15-35 watts of electricity even while it is not operating.
• If you are not going to use the air conditioner for a long period, for example in spring or autumn, turn the breaker OFF.
• Use the air conditioner in the following conditions.
Mode
COOL
HEAT
DRY
Operating conditions
Outdoor temperature: 2MK(X)S
3/4MK(X)S
RK(X)S
RK(X)H
Indoor temperature: 18 to 32 °C
Indoor humidity: 80% max.
Outdoor temperature: 2MXS
3/4MXS
RXS
RXH
Indoor temperature: 10 to 30 °C
Outdoor temperature: 2MK(X)S
3/4MK(X)S
RK(X)S
RK(X)H
Indoor temperature: 18 to 32 °C
Indoor humidity: 80% max.
If operation is continued out of this range
10 to 46 °C • A safety device may work to stop the operation.
–10 to 46 °C
(In multi system, it may work to stop the operation of the
–10 to 46 °C
outdoor unit only.)
10 to 46 °C • Condensation may occur on the indoor unit and drip.
–10 to 21 °C • A safety device may work to stop the operation.
–15 to 21 °C
–15 to 21 °C
–10 to 21 °C
10 to 46 °C • A safety device may work to stop the operation.
–10 to 46 °C • Condensation may occur on the indoor unit and drip.
–10 to 46 °C
10 to 46 °C
Operation outside this humidity or temperature range may cause a safety device to disable the system.
System Configuration
167
Instruction
SiEBE18-526
2.2.5 AUTO · DRY · COOL · HEAT · FAN Operation
AUTO · DRY · COOL · HEAT · FAN Operation
The air conditioner operates with the operation mode of your
choice.
From the next time on, the air conditioner will operate with the
same operation mode.
To start operation
C
1. Press “MODE selector button”
and select a operation mode.
• Each pressing of the button advances the
mode setting in sequence.
4
HOME LEAVE
: AUTO
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
2, 3
1
: DRY
: COOL
: HEAT
SWING
SENSOR
5
: FAN
ON
<FTKS>
CANCEL
OFF
TIMER
<FTXS>
2. Press “ON/OFF button”.
• The OPERATION lamp lights up.
ON
OFF
To stop operation
3. Press “ON/OFF button” again.
• Then OPERATION lamp goes off.
To change the temperature setting
4. Press “TEMPERATURE adjustment button”
DRY or FAN mode
AUTO or COOL or HEAT mode
Press “
“
The temperature setting is not variable.
” to raise the temperature and press
” to lower the temperature.
Set to the temperature you like.
C
168
System Configuration
Instruction
SiEBE18-526
To change the air flow rate setting
5. Press “FAN setting button”.
DRY mode
AUTO or COOL or HEAT or FAN mode
Five levels of air flow rate setting from “
The air flow rate setting is not variable.
plus “
”“
” to “
”
” are available.
• Indoor unit quiet operation
When the air flow is set to “
”, the noise from the indoor unit will become quieter.
Use this when making the noise quieter.
The unit might lose power when the fan strength is set to a weak level.
NOTE
Note on HEAT operation
• Since this air conditioner heats the room by taking heat from outdoor air to indoors, the heating
capacity becomes smaller in lower outdoor temperatures. If the heating effect is insufficient, it is
recommended to use another heating appliance in combination with the air conditioner.
• The heat pump system heats the room by circulating hot air around all parts of the room. After
the start of heating operation, it takes some time before the room gets warmer.
• In heating operation, frost may occur on the outdoor unit and lower the heating capacity. In that
case, the system switches into defrosting operation to take away the frost.
• During defrosting operation, hot air does not flow out of indoor unit.
Note on DRY operation
• The computer chip works to rid the room of humidity while maintaining the temperature as much
as possible. It automatically controls temperature and fan strength, so manual adjustment of
these functions is unavailable.
Note on AUTO operation
• In AUTO operation, the system selects an appropriate operation mode (COOL or HEAT) based
on the room temperature at the start of the operation.
• The system automatically reselects setting at a regular interval to bring the room temperature to
user-setting level.
• If you do not like AUTO operation, you can manually select the operation mode and setting you
like.
Note on air flow rate setting
• At smaller air flow rates, the cooling (heating) effect is also smaller.
System Configuration
169
Instruction
SiEBE18-526
2.2.6 Adjusting the Air Flow Direction
FTXS20/25/35D, CTXS50D
Adjusting the Air Flow Direction
You can adjust the air flow direction to increase your comfort.
To adjust the horizontal
blades (flaps)
1. Press “SWING button”.
• “
” is displayed on the LCD and the flaps
will begin to swing.
2. When the flaps have reached the
desired position, press “SWING
button” once more.
ECONO
POWERFUL
The display will go blank.
The flaps will stop moving.
ON/OFF
TEMP
MODE
SWING
FAN
SILENT COMFORT SENSOR
1, 2
3, 4
ON
CANCEL
OFF
TIMER
To adjust the vertical blades
(louvers)
Hold the knob and move the louvers.
(You will find a knob on the left-side and the right-side blades.)
• When the unit is installed in the corner of a room,
the direction of the louvers should be facing away
from the wall.
If they face the wall, the wall will block off the wind,
causing the cooling (or heating) efficiency to drop.
170
System Configuration
Instruction
SiEBE18-526
To start COMFORT AIRFLOW operation
3. Press “COMFORT AIRFLOW button”.
The flap position will change, preventing air from blowing directly on the occupants of the room.
• “
” is displayed on the LCD.
〈COOL/DRY〉 The flap will go up.
〈HEAT〉 The flap will go down.
To cancel COMFORT AIRFLOW operation
4. Press “COMFORT AIRFLOW button” again.
• The flaps will return to the memory position from before COMFORT AIRFLOW mode.
Notes on COMFORT AIRFLOW operation
• POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time.
Priority is given to POWERFUL operation.
Notes on flaps and louvers angles
• When “ SWING button” is selected, the flaps
swinging range depends on the operation mode.
(See the figure.)
ATTENTION
• Always use a remote control to adjust the flaps
angle. If you attempt to move it forcibly with hand
when it is swinging, the mechanism may be broken.
• Be careful when adjusting the louvers. Inside the
air outlet, a fan is rotating at a high speed.
In DRY mode or COOL mode
When stop operation
10°
Upper limit
50°
Lower limit
In HEAT mode
When stop operation
30°
Upper limit
65°
Lower limit
In FAN mode
When stop operation 5°
Upper limit
70°
Lower limit
System Configuration
171
Instruction
SiEBE18-526
FTXS20/25/35C
Adjusting the Air Flow Direction
You can adjust the air flow direction to increase your
comfort.
To adjust the horizontal
blades (flaps)
ON
C
1. Press “SWING button”.
The display will light up and the flaps will
begin to swing.
2. When the flaps have reached the
desired position, press “SWING
button” once more.
The display will go blank.
The flaps will stop moving.
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
ON
SWING
SENSOR
1, 2
CANCEL
OFF
TIMER
172
System Configuration
Instruction
SiEBE18-526
To adjust the vertical blades
(louvres)
Hold the knob and move the louvres.
(You will find a knob on the left-side and the right-side blades.)
Notes on flaps and louvres angles
• When “SWING button” is selected, the flaps
swinging range depends on the operation mode.
(See the figure.)
ATTENTION
• Always use a remote control to adjust the flaps
angle. If you attempt to move it forcibly with hand
when it is swinging, the mechanism may be broken.
• Be careful when adjusting the louvres. Inside the
air outlet, a fan is rotating at a high speed.
In DRY mode or COOL mode
When stop operation
Upper limit in cooling
0˚
25˚
Lower limit in cooling
In HEAT or FAN mode
When stop operation
5˚
Upper limit in heating
30˚
Lower limit in heating
System Configuration
173
Instruction
SiEBE18-526
FTXS50/60/71B
Adjusting the Air Flow Direction
You can adjust the air flow direction to increase your
comfort.
To adjust the horizontal
blade (flap)
1. Press “SWING button
• “
ON
C
”.
” is displayed on the LCD.
2. When the flap has reached the
desired position,
press “SWING button
” once
more.
• The flap will stop moving.
HOME LEAVE
POWERFUL
MODE
SILENT
ON/OFF
TEMP
1, 2
FAN
SENSOR SWING
3, 4
ON
CANCEL
OFF
TIMER
To adjust the vertical blades (louvers)
3. Press “SWING button
• “
”.
” is displayed on the LCD.
4. When the louvers have reached the desired position, press the
“SWING button
” once more.
• The louvers will stop moving.
174
System Configuration
Instruction
SiEBE18-526
To 3-D Airflow
1. 3. Press the “SWING button
” and the “SWING button
”:
the “
” and “
” display will light up and the flap and louvers will
move in turn.
To cancel 3-D Airflow
2. 4. Press either the “SWING button
” or the “SWING button
”
Notes on louvers angles
ATTENTION
• Always use a remote control to adjust the louvers angles. In side the air outlet, a fan is rotating at a
high speed.
Notes on flap angle
• When “SWING button” is selected, the flaps swinging
range depends on the operation mode. (See the figure.)
Three-Dimensional (3-D) Airflow
• Using three-dimensional airflow circulates cold air,
which tends to collected at the bottom of the room, and
hot air, which tends to collect near the ceiling,
throughout the room, preventing areas of cold and hot
developing.
ATTENTION
• Always use a remote controller to adjust the flaps angle.
If you attempt to move it forcibly with hand when it is
swinging, the mechanism may be broken.
• Be careful when adjusting the louvers. Inside the air
outlet, fan is rotating at a high speed.
System Configuration
In COOL or DRY mode
STOP
COOL
approx. 10˚~40˚
DRY
approx. 5˚~35˚
In HEAT or FAN mode
STOP
HEAT
approx. 15˚~55˚
FAN
approx. 5˚~55˚
175
Instruction
SiEBE18-526
FLXS25/35/50/60B
Adjusting the Air Flow Direction
You can adjust the air flow direction to increase your
comfort.
To adjust the horizontal
blade (flap)
ON
C
1. Press “SWING button”.
The display will light up and the flaps will
begin to swing.
2. When the flaps have reached the
desired position, press “SWING
button” once more.
The display will go blank.
The flaps will stop moving.
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
ON
SWING
1, 2
CANCEL
OFF
TIMER
176
System Configuration
Instruction
SiEBE18-526
To adjust the vertical blades
(louvres)
• When adjusting the louvre, use a robust and stable stool and
watch your steps carefully.
Hold the knob and move the louvres.
(You will find a knob on the left side and the right side blades.)
Notes on flap and louvres angles
• Unless [SWING] is selected, you should set the
flap at a near- horizontal angle in COOL or DRY
mode to obtain the best performance.
• In COOL or DRY mode, if the flap is fixed at a
downward position, the flap automatically moves
in about 60 minutes to prevent condensation on it.
ATTENTION
• Always use a remote control to adjust the flap
angle.
If you attempt to move it forcibly with hand when it
is swinging, the mechanism may be broken.
• Be careful when adjusting the louvres. Inside the
air outlet, a fan is rotating at a high speed.
System Configuration
DRY
COOL
FAN
HEAT
177
Instruction
SiEBE18-526
FVXS25/35/50B
Adjusting the Air Flow Direction
You can adjust the air flow direction to increase your
comfort.
To adjust the horizontal
blade (flap)
ON
C
1. Press “SWING button”.
The display will light up and the flaps will
begin to swing.
HOME LEAVE
2. When the flaps have reached the
desired position, press “SWING
button” once more.
The display will go blank.
The flaps will stop moving.
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
ON
SWING
1, 2
CANCEL
OFF
TIMER
To adjust the vertical
blades (louvres)
Hold the knob and move the louvre.
(You will find a knob on the left-side and the right-side blades.)
Notes on flap and louvers angle
• Unless [ SWING ] is selected, you should set the flap at
a near-horizontal angle in HEAT mode and at a upward
position in COOL or DRY mode to obtain the best
performance.
COOL/DRY
HEAT
ATTENTION
• When adjusting the flap by hand, turn off the unit, and
use the remote controller to restart the unit.
• Be careful when adjusting the louvres. Inside the air
outlet, a fan is rotating at a high speed.
178
System Configuration
Instruction
SiEBE18-526
Air flow selection
• Make air flow selection according to what suits you.
When setting the air flow selection switch to
.
• Air conditioner automatically decides the appropriate blowing pattern depending on the operating
mode/situation.
Operating mode
COOL mode
Situation
Blowing pattern
• When the room has become fully
cool, or when one hour has passed
since turning on the air conditioner.
• So that air does not come into direct
contact with people, air is blown
upper air outlet, room temperature is
equlised.
• At start of operation or other times
when the room is not fully cooled.
• At times other than below.
(Normal time.)
HEAT mode
• Air is blown from the upper and lower
air outlets for high speed cooling
during COOL mode, and for filling
the room with warm air during HEAT
mode.
• At start or when air temperature is
low.
• So that air does not come into direct
contact with people. Air is blown
upper air outlet.
• During Dry mode, so that cold air does not come into direct contact with people, air is blown upper air outlet.
When setting the air outlet selection switch to
.
• Regardless of the operating mode or situation, air blows from the upper air outlet.
• Use this switch when you do not want air coming out of the lower air outlet. (While sleeping etc.)
CAUTION
• Do not try to adjust the flap by hand.
• When adjusting by hand, the mechanism may not operate properly or condensation may drip from
air outlets.
System Configuration
179
Instruction
SiEBE18-526
2.2.7 POWERFUL Operation
POWERFUL Operation
POWERFUL operation quickly maximizes the cooling
(heating) effect in any operation mode. You can get the
maximum capacity .
To start POWERFUL
operation
ON
1. Press “POWERFUL button”.
• POWERFUL operation ends in 20 minutes.
Then the system automatically operates
again with the settings which were used
before POWERFUL operation.
• When using POWERFUL operation, there
are some functions which are not
available.
To cancel POWERFUL
operation
HOME LEAVE
POWERFUL
ON/OFF
TEMP
1, 2
MODE
SILENT
FAN
ON
2. Press “POWERFUL button”
again.
SWING
SENSOR
CANCEL
OFF
TIMER
NOTE
Notes on POWERFUL operation
• In COOL and HEAT mode
To maximize the cooling (heating) effect, the capacity of outdoor unit must be increased
and the air flow rate be fixed to the maximum setting.
The temperature and air flow settings are not variable.
• In DRY mode
The temperature setting is lowered by 2.5ºC and the air flow rate is slightly increased.
• In FAN mode
The air flow rate is fixed to the maximum setting.
• When using priority-room setting
See “Note for multi system”
180
System Configuration
Instruction
SiEBE18-526
2.2.8 OUTDOOR UNIT SILENT Operation
OUTDOOR UNIT SILENT Operation
OUTDOOR UNIT SILENT operation lowers the noise
level of the outdoor unit by changing the frequency and
fan speed on the outdoor unit. This function is
convenient during night.
To start OUTDOOR UNIT
SILENT operation
C
1. Press “SILENT button”.
To cancel OUTDOOR UNIT
SILENT operation
2. Press “SILENT button” again.
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
SWING
SENSOR
1, 2
ON
CANCEL
OFF
TIMER
NOTE
Note on OUTDOOR UNIT SILENT operation
• If using a multi system, this function will work only when the OUTDOOR UNIT SILENT
operation is set on all operated indoor units.
However, if using priority-room setting, see “Note for multi system”
• This function is available in COOL, HEAT, and AUTO modes.
(This is not available in FAN and DRY mode.)
• POWERFUL operation and OUTDOOR UNIT SILENT operation cannot be used at the
same time.
Priority is given to POWERFUL operation.
• If operation is stopped using the remote controller or the main unit ON/OFF switch when
using OUTDOOR UNIT SILENT operation, “
” will remain on the remote controller
display.
System Configuration
181
Instruction
SiEBE18-526
2.2.9 ECONO Operation
ECONO Operation
ECONO operation is a function which enables efficient operation by lowering the maximum power
consumption value.
To start ECONO operation
1. Press “ECONO button”.
• “
” is displayed on the LCD.
To cancel ECONO
operation
2. Press “ECONO button” again.
• “
” disappears from the LCD.
1, 2
ECONO
POWERFUL
ON/OFF
TEMP
MODE
SWING
FAN
SILENT COMFORT SENSOR
ON
CANCEL
OFF
TIMER
NOTE
• ECONO Operation can only be set when the unit is running. Pressing the operation stop
button causes the settings to be canceled, and the “
” disappears from the LCD.
• ECONO operation is a function which enables efficient operation by limiting the power
consumption of the outdoor unit (operating frequency).
• ECONO operation functions in AUTO, COOL, DRY, and HEAT modes. The fan strength
does not change in ECONO operation.
• POWERFUL operation and ECONO operation cannot be used at the same time.
Priority is given to POWERFUL operation.
• Power consumption may not drop even if ECONO operation is used, when the level of
power consumption is already low.
182
System Configuration
Instruction
SiEBE18-526
2.2.10 HOME LEAVE Operation
HOME LEAVE Operation
HOME LEAVE operation is a function which allows you to record your preferred temperature and air
flow rate settings.
To start HOME LEAVE
operation
1. Press “HOME LEAVE button” .
• The HOME LEAVE lamp lights up.
C
ON
OFF
To cancel HOME LEAVE
operation
1, 2
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
2. Press “HOME LEAVE button” again.
• The HOME LEAVE lamp goes off.
ON
SWING
SENSOR
CANCEL
OFF
TIMER
Before using HOME LEAVE operation.
To set the temperature and air flow rate for HOME LEAVE operation
When using HOME LEAVE operation for the first time, please set the temperature and air flow
rate for HOME LEAVE operation. Record your preferred temperature and air flow rate.
Initial setting
Selectable range
temperature
Air flow rate
temperature
Air flow rate
Cooling
25°C
AUTO
18-32°C
5 step, AUTO and SILENT
Heating
25°C
AUTO
10-30°C
5 step, AUTO and SILENT
1. Press “HOME LEAVE button”. Make sure “
” is displayed in the remote control
display.
2. Adjust the set temperature with “
” or “
” as you like.
3. Adjust the air flow rate with “FAN” setting button as you like.
Home leave operation will run with these settings the next time you use this function. To change
the recorded information, repeat steps 1 – 3.
System Configuration
183
Instruction
SiEBE18-526
What’s the HOME LEAVE operation
Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate
which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set
temperature and air flow rate. You can start your favorite operation mode simply by pressing the HOME
LEAVE button on the remote control. This function is convenient in the following situations.
Useful in these cases.
1. Use as an energy-saving mode
Set the temperature 2-3°C higher (cooling) or lower (heating) than normal. Setting the fan strength to the lowest
setting allows the unit to be used in energy-saving mode. Also convenient for use while you are out or sleeping.
• Every day before you leave the house...
When you go out, push the “HOME LEAVE
Operation” button, and the air conditioner
will adjust capacity to reach the preset
temperature for HOME LEAVE Operation.
When you return, you will be
welcomed by a comfortably air
conditioned room.
Push the “HOME LEAVE Operation”
button again, and the air conditioner
will adjust capacity to the set
temperature for normal operation.
The unit will maintain the
temperature in the room at a
comfortable level while you sleep.
When you enter the living room in the
morning, the temperature will be just right.
• Before bed...
Set the unit to HOME LEAVE
Operation before leaving the
living room when going to bed.
Disengaging HOME LEAVE Operation
will return the temperature to that set
for normal operation. Even the coldest
winters will pose no problem!
2. Use as a favorite mode
Once you record the temperature and air flow rate settings you most often use, you can retrieve them by
pressing HOME LEAVE button. You do not have to go through troublesome remote control operations.
NOTE
• Once the temperature and air flow rate for HOME LEAVE operation are set, those settings will be
used whenever HOME LEAVE operation is used in the future. To change these settings, please refer
to the “Before using HOME LEAVE operation” section above.
• HOME LEAVE operation is only available in COOL and HEAT mode. Cannot be used in AUTO, DRY,
and FAN mode.
• HOME LEAVE operation runs in accordance with the previous operation mode (COOL or HEAT)
before using HOME LEAVE operation.
• HOME LEAVE operation and POWERFUL operation cannot be used at the same time.
Last button that was pressed has priority.
• The operation mode cannot be changed while HOME LEAVE operation is being used.
• When operation is shut off during HOME LEAVE operation, using the remote control or the indoor
unit ON/OFF switch, “
” will remain on the remote control display.
184
System Configuration
Instruction
SiEBE18-526
2.2.11 INTELLIGENT EYE Operation
FTXS20/25/35D, CTXS50D
INTELLIGENT EYE Operation
“INTELLIGENT EYE” is the infrared sensor which
detects the human movement.
■ To start INTELLIGENT EYE
operation
1. Press “SENSOR button”.
• “
” is displayed on the LCD.
■ To cancel the
INTELLIGENT EYE
operation
2. Press “SENSOR button” again.
• “
” disappears from the LCD.
[EX.]
ECONO
POWERFUL
ON/OFF
TEMP
MODE
SWING
FAN
SILENT COMFORT SENSOR
1, 2
ON
CANCEL
When somebody in the room
OFF
• Normal operation
TIMER
When nobody in the room
• 20 min. after, start energy
saving
operation.
Somebody back in the room
• Back to normal operation.
System Configuration
185
Instruction
SiEBE18-526
INTELLIGENT EYE Operation
“INTELLIGENT EYE” is useful for Energy Saving
Energy saving operation
• Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature.
• Decrease the air flow rate slightly in fan operation. (In FAN mode only)
Notes on “INTELLIGENT EYE”
• Application range is as follows.
Vertical angle 90°
(Side View)
Horizontal angle 110°
(Top View)
90°
7m
55° 55°
7m
• Sensor may not detect moving objects further than 7m away. (Check the application range)
• Sensor detection sensitivity changes according to indoor unit location, the speed of
passersby, temperature range, etc.
• The sensor also mistakenly detects pets, sunlight, fluttering curtains and light reflected off of
mirrors as passersby.
• INTELLIGENT EYE operatipon will not go on during powerful operation.
• Night set mode will not go on during you use INTELLIGENT EYE operation.
CAUTION
• Do not place large objects near the sensor.
Also keep heating units or humidifiers outside the sensor’s detection area. This sensor can
detect objects it shouldn’t as well as not detect objects it should.
• Do not hit or violently push the INTELLIGENT EYE sensor. This can lead to damage and
malfunction.
186
System Configuration
Instruction
SiEBE18-526
FTXS20/25/35C
INTELLIGENT EYE Operation
“INTELLIGENT EYE” is the infrared sensor which
detects the human movement.
To start INTELLIGENT
EYE operation
C
1. Press “SENSOR button”.
To cancel the
INTELLIGENT EYE
operation
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
2. Press “SENSOR button” again.
[EX.]
SWING
SENSOR
1, 2
When somebody in the room
• Normal operation
ON
CANCEL
OFF
TIMER
When nobody in the room
• 20 min. after, start energy
operation.
saving
Somebody back in the room
• Back to normal operation.
System Configuration
187
Instruction
SiEBE18-526
To adjust the angle of the INTELLIGENT EYE sensor
• You can adjust the angle of the INTELLIGENT EYE
sensor to increase the detection area.
(Adjustable angle: 15° to right and left of centre)
15˚ 15˚
• Gently push and slide the sensor to adjust the
angle.
• After adjusting the angle, wipe the sensor gently
with a clean cloth, being careful not to scratch
the sensor.
Moving the sensor to the left
INTELLIGENT EYE
sensor
Moving the sensor to the right
“INTELLIGENT EYE” is useful for Energy Saving
Energy saving operation
• Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature.
• Decrease the air flow rate slightly in fan operation. (In FAN mode only)
Notes on “INTELLIGENT EYE”
• Application range is as follows.
Vertical angle 80°
(Side View)
Horizontal angle 100°
(Top View)
80˚
5m
50˚ 50˚
5m
• Sensor may not detect moving objects further than 5m away. (Check the application range)
• Sensor detection sensitivity changes according to indoor unit location, the speed of
passersby, temperature range, etc.
• The sensor also mistakenly detects pets, sunlight, fluttering curtains and light reflected off of
mirrors as passersby.
• INTELLIGENT EYE operatipon will not go on during powerful operation.
• Night set mode willnot go on duringyou use INTELLIGENTEYE operation.
CAUTION
• Do not place large objects near the sensor.
Also keep heating units or humidifiers outside the sensor’s detection area. This sensor can
detect objects it shouldn’t as well as not detect objects it should.
• Do not hit or violently push the INTELLIGENT EYE sensor. This can lead to damage and
malfunction.
188
System Configuration
Instruction
SiEBE18-526
FTXS50/60/71B
INTELLIGENT EYE Operation
“INTELLIGENT EYE” is the infrared sensor which
detects the human movement.
To start INTELLIGENT
EYE operation
C
1. Press “SENSOR button”.
To cancel the
INTELLIGENT EYE
operation
HOME LEAVE
POWERFUL
ON/OFF
TEMP
2. Press “SENSOR button” again.
MODE
SILENT
[EX.]
FAN
SENSOR SWING
1, 2
When somebody in the room
ON
• Normal operation
CANCEL
OFF
TIMER
When nobody in the room
• 20 min. after, start energy
operation.
saving
Somebody back in the room
• Back to normal operation.
System Configuration
189
Instruction
SiEBE18-526
“INTELLIGENT EYE” is useful for Energy Saving
Energy saving operation
• Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature.
• Decrease the air flow rate slightly in fan operation. (In FAN mode only)
Notes on “INTELLIGENT EYE”
• Application range is as follows.
Vertical angle 90°
(Side View)
Horizontal angle 110°
(Top View)
90˚
7m
55˚ 55˚
7m
• Sensor may not detect moving objects further than 7m away. (Check the application range)
• Sensor detection sensitivity changes according to indoor unit location, the speed of
passersby, temperature range, etc.
• The sensor also mistakenly detects pets, sunlight, fluttering curtains and light reflected off
of mirrors as passersby.
• INTELLIGENT EYE operation will not go on during powerful operation.
• Night set mode will not go on during you use INTELLIGENTEYE operation.
CAUTION
• Do not place large objects near the sensor.
Also keep heating units or humidifiers outside the sensor’s detection area. This sensor can
detect objects it shouldn’t as well as not detect objects it should.
• Do not hit or violently push the INTELLIGENT EYE sensor. This can lead to damage and
malfunction.
190
System Configuration
Instruction
SiEBE18-526
2.2.12 TIMER Operation
TIMER Operation
Timer functions are useful for automatically switching the
air conditioner on or off at night or in the morning. You can
also use OFF TIMER and ON TIMER in combination.
To use OFF TIMER operation
C
• Check that the clock is correct.
If not, set the clock to the present time.
1. Press “OFF TIMER button”.
is displayed.
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
blinks.
2. Press “TIMER Setting button”
until the time setting reaches the
point you like.
• Every pressing of either button increases or
decreases the time setting by 10 minutes.
Holding down either button changes the
setting rapidly.
ON
SWING
SENSOR
CANCEL
OFF
TIMER
3. Press “OFF TIMER button”
again.
4
2
1, 3
• The TIMER lamp lights up.
ON
OFF
To cancel the OFF TIMER operation
4. Press “CANCEL button”.
• The TIMER lamp goes off.
Notes
• When TIMER is set, the present time is not displayed.
• Once you set ON, OFF TIMER, the time setting is kept in the memory. (The memory is canceled when
remote control batteries are replaced.)
• When operating the unit via the ON/OFF Timer, the actual length of operation may vary from the time
enteredbythe user.
NIGHT SET MODE
When the OFF TIMER is set, the air conditioner automatically adjusts the temperature setting (0.5°C
up in COOL, 2.0°C down in HEAT) to prevent excessive cooling (heating) for your pleasant sleep.
System Configuration
191
Instruction
SiEBE18-526
To use ON TIMER operation
• Check that the clock is correct. If not, set
the clock to the present time
(page 9.).
1. Press “ON TIMER button”.
C
is displayed.
blinks.
2. Press “TIMER Setting button”
until the time setting reaches
the point you like.
• Every pressing of either button
increases or decreases the time setting
by 10 minutes. Holding down either
button changes the setting rapidly.
3. Press “ON TIMER button”
again.
• The TIMER lamp lights up.
ON
OFF
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
ON
SWING
SENSOR
CANCEL
OFF
1, 3
4
2
TIMER
To cancel ON TIMER
operation
4. Press “CANCEL button”.
• The TIMER lamp goes off.
To combine ON TIMER and OFF TIMER
• A sample setting for combining the two timers is shown below.
Display
(Example)
Present time: 11:00 PM
(The unit operating)
OFF TIMER at 0:00 a.m.
ON TIMER at 7:00 a.m. Combined
ATTENTION
In the following cases, set the timer again.
• After a breaker has turned OFF.
• After a power failure.
• After replacing batteries in the remote control.
192
System Configuration
Instruction
SiEBE18-526
2.2.13 Note for Multi System
Note for Multi System
<< What is a “Multi System”? >>
This system has one outdoor unit connected to multiple indoor units.
Functions depend on the model.
Selecting the Operation Mode
A
room
Outdoor
unit
1. With the Priority Room Setting
present but inactive or not present
Living
room
B
room
C
When more than one indoor unit is operating, priority is
room
given to the first unit that was turned on.
In this case, set the units that are turned on later to the
same operation mode (*1) as the first unit.
Otherwise, they will enter the Standby Mode, and the operation lamp will flash; this does not indicate malfunction.
(*1)
• COOL, DRY and FAN mode may be used at the same time.
• AUTO mode automatically selects COOL mode or HEAT mode based on the room temperature.
Therefore, AUTO mode is available when selecting the same operation mode as that of the room
with the first unit to be turned on.
<CAUTION>
Normally, the operation mode in the room where the unit is first run is given priority, but the following situations are
exceptions, so please keep this in mind.
If the operation mode of the first room is FAN Mode, then using Heating Mode in any room after this will give priority to
heating. In this situation, the air conditioner running in FAN Mode will go on standby, and the operation lamp will flash.
NIGHT QUIET Mode (Available only for cooling operation)
NIGHT QUIET Mode requires initial programming during installation. Please consult your retailer or dealer for assistance.
NIGHT QUIET Mode reduces the operation noise of the outdoor unit during the night time hours to prevent
annoyance to neighbors.
• The NIGHT QUIET Mode is activated when the temperature drops 5°C or more below the highest temperature
recorded that day. Therefore, when the temperature difference is less than 5°C, this function will not be activated.
• NIGHT QUIET Mode reduces slightly the cooling efficiency of the unit.
OUTDOOR UNIT SILENT Operation
1. With the Priority Room Setting present but inactive or not present
When using the OUTDOOR UNIT SILENT operation feature with the Multi system, set all indoor units to
OUTDOOR UNIT SILENT operation using their remote controls.
When clearing OUTDOOR UNIT SILENT operation, clear one of the operating indoor units using their remote control.
However OUTDOOR UNIT SILENT operation display remains on the remote control for other rooms.
We recommend you release all rooms using their remote controls.
Cooling / Heating Mode Lock (Available only for heat pump models)
The Cooling / Heating Mode Lock requires initial programming during installation.Please consult your retailer or dealer
for assistance. The Cooling / Heating Mode Lock sets the unit forcibly to either Cooling or Heating Mode. This function
is convenient when you wish to set all indoor units connected to the Multi system to the same operation mode.
System Configuration
193
Instruction
SiEBE18-526
2.2.14 Care and Cleaning
FTXS20/25/35D, CTXS50D
Care and Cleaning
CAUTION
Before cleaning, be sure to stop the operation and
turn the breaker OFF.
Units
Indoor unit, Outdoor unit and Remote control
1. Wipe them with dry soft cloth.
Front panel
1. Open the front panel.
• Hold the panel by the tabs on the two sides and lift
it unitl it stops with a click.
2. Remove the front panel.
• Lift the front panel up, slide it slightly to the
right, and remove it from the horizontal axle.
3. Clean the front panel.
• Wipe it with a soft cloth soaked in water.
• Only neutral detergent may be used.
• In case of washing the panel with water, dry it with
cloth, dry it up in the shade after washing.
4. Attach the front panel.
• Set the 2 keys of the front panel into the slots and
push them in all the way.
• Close the front panel slowly and push the panel at
the 3 points.
(1 on each side and 1 in the middle.)
Fit the key
into the slot.
CAUTION
•
•
•
•
Don’t touch the metal parts of the indoor unit. If you touch those parts, this may cause an injury.
When removing or attaching the front panel, use a robust and stable stool and watch your steps carefully.
When removing or attaching the front panel, support the panel securely with hand to prevent it from falling.
For cleaning, do not use hot water above 40 °C, benzine, gasoline, thinner, nor other volatile oils,
polishing compound, scrubbing brushes, nor other hand stuff.
• After cleaning, make sure that the front panel is securely fixed.
194
System Configuration
Instruction
SiEBE18-526
Filters
1. Open the front panel.
2. Pull out the air filters.
• Push a little upwards the tab at the center of each air
filter, then pull it down.
3. Take off the Titanium Apatite
Photocatalytic Air-Purifying Filter.
• Hold the recessed parts of the frame and unhook
the four claws.
Titanium Apatite
Photocatalytic
Air-Purifying Filter
4. Clean or replace each filter.
See below.
Air filter
Filter frame
Tab
5. Set the air filter and Titanium Apatite
Photocatalytic Air-Purifying Filter as
they were and close the front panel.
Push
• Insert claws of the filters into slots of the front panel.
Close the front panel slowly and push the panel at
the 3 points. (1 on each side and 1 in the middle.)
Air Filter
1. Wash the air filters with water or clean them with
vacuum cleaner.
• If the dust does not come off easily, wash them with neutral detergent
thinned with lukewarm water, then dry them up in the shade.
• It is recommended to clean the air filters every two weeks.
Titanium Apatite Photocatalytic
Air-Purifying Filter.
Tab
The Titanium Apatite Photocatalytic Air-Purifying Filter can be renewed
by washing it with water once every 6 months. We recommend replacing
it once every 3 years.
[ Maintenance ]
1.
2.
3.
4.
5.
Remove dust with a vacuum cleaner and wash lightly with water.
If it is very dirty, soak it for 10 to 15 minutes in water mixed with a neutral cleaning agent.
Do not remove filter from frame when washing with water.
After washing, shake off remaining water and dry in the shade.
Since the material is made out of paper, do not wring out the filter when removing water from it.
[ Replacement]
1. Remove the tabs on the filter frame and replace with a new filter.
• Dispose of the old filter as flammable waste.
System Configuration
195
Instruction
SiEBE18-526
NOTE
• Operation with dirty filters:
(1) cannot deodorize the air.
(2) cannot clean the air.
(3) results in poor heating or cooling. (4) may cause odour.
• To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop
there you bought the air conditioner.
• Dispose of old filters as burnable waste.
Item
Titanium Apatite Photocatalytic Air-Purifying Filter.
(without frame) 1 set
Part No.
KAF970A46
Check
Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.
Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit.
Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
• If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the
service shop if this is the case.
Before a long idle period
1. Operate the “FAN only” for several hours on a fine day to dry out the
inside.
• Press “MODE selector button” and select “FAN” operation.
• Press “ON/OFF button” and start operation.
2. Clean the air filters and set them again.
3. Take out batteries from the remote control.
4. Turn OFF the breaker for the room air conditioner.
• When a multi outdoor unit is connected, make sure the heating operation is not used at the
other room before you use the fan operation.
196
System Configuration
Instruction
SiEBE18-526
FTXS20/25/35C
Care and Cleaning
CAUTION
Before cleaning, be sure to stop the operation and
turn the breaker OFF.
Units
Indoor unit, Outdoor unit and Remote control
1. Wipe them with dry soft cloth.
Front grille
1. Open the front grille.
• Hold the grille by the tabs on the two sides and lift it
unitl it stops with a click.
2. Remove the front grille.
• Supporting the front grille with one hand, release
the lock by sliding down the knob with the other
hand.
• To remove the front grille, pull it toward yourself
with both hands.
3. Clean the front grille
• Wipe it with a soft cloth soaked in water.
• Only neutral detergent may be used.
• In case of washing the grille with water, dry it
withcloth, dry it up in the shade after washing.
4. Attach the front grille
• Set the 3 keys of the front grille into the slots
and push them in all the way.
• Close the front grille slowly and push the grille
at the 3 points.
(1 on each sides and 1 in the middle.)
• Check to see if the rotating axis in the upper
center section is moving.
Fit the key
into the slot.
CAUTION
•
•
•
•
Don’t touch the metal parts of the indoor unit. If you touch those parts, this may cause an injury.
When removing or attaching the front grille, use a robust and stable stool and watch your steps carefully.
When removing or attaching the front grille, support the grille securely with hand to prevent it from falling..
For cleaning, do not use hot water above 40 °C, benzine, gasoline, thinner, nor other volatile oils,
polishing compound, scrubbing brushes, nor other hand stuff.
• After cleaning, make sure that the front grille is securely fixed.
System Configuration
197
Instruction
SiEBE18-526
Filters
1. Open the front grille.
2. Pull out the air filters.
• Push a little upwards the tab at the center of each air
filter, then pull it down.
3. Take off the air purifying filter with
photocatalytic deodorizing function.
Air purifying filter
with photocatalytic
deodorizing
function
Air filter
• Hold the recessed parts of the frame and unhook
the four claws.
4. Clean or replace each filter.
See below.
5. Set the air filter and the air purifying
filter with photocalytic deodorizing
function as they were and close the
front grille.
Push
• Insert claws of the filters into slots of the front grille.
Close the front grille slowly and push the grille at the
3 points. (1 on each side and 1 in the middle.)
Air Filter
1. Wash the air filters with water or clean them with
vacuum cleaner.
• If the dust does not come off easily, wash them with neutral detergent
thinned with lukewarm water, then dry them up in the shade.
• It is recommended to clean the air filters every two weeks.
Air purifying filter with photocatalytic
deodorizing function. (gray)
The Air purifying filter with photocatalytic deodorizing function can be
renewed by washing it with water once every 6 months. We recommend
replacing it once every 3 years.
[ Maintenance ]
1.
2.
3.
4.
5.
Remove dust with a vacuum cleaner and wash lightly with water.
If it is very dirty, soak it for 10 to 15 minutes in water mixed with a neutral cleaning agent.
Do not remove filter from frame when washing with water.
After washing, shake off remaining water and dry in the shade.
Since the material is made out of paper, do not wring out the filter when removing water from it.
[ Replacement]
1. Remove the tabs on the filter frame and replace with a new filter.
• Dispose of the old filter as flammable waste.
198
System Configuration
Instruction
SiEBE18-526
Check
Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.
Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit.
Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
• If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the
service shop if this is the case.
Before a long idle period
1. Operate the “FAN only” for several hours on a fine day to dry out the
inside.
• Press “MODE” button and select “FAN” operation.
• Press “ON/OFF” button and start operation.
2. After operation stops, turn off the breaker for the room air conditioner.
3. Clean the air filters and set them again.
4. Take out batteries from the remote control.
• When a multi outdoor unit is connected, make sure the heating operation is not used at the other room
beforeyou use thefan operation.
NOTE
• Operation with dirty filters:
(1) cannot deodorize the air.
(2) cannot clean the air.
(3) results in poor heating or cooling.
(4) may cause odour.
• To order air purifying filter with photocatalytic deodorizing function contact to the service shop there
you bought the air conditioner.
• Dispose of old filters as burnable waste.
Item
Part No.
Air purifying filter with photocatalytic deodorizing
function. (with frame) 1 set
KAF918A43
Air purifying filter with photocatalytic deodorizing
function. (without frame) 1 set
KAF918A44
System Configuration
199
Instruction
SiEBE18-526
FTXS50/60/71B
Care and Cleaning
CAUTION
Before cleaning, be sure to stop the operation and
turn the breaker OFF.
Units
Indoor unit, Outdoor unit and Remote control
1. Wipe them with dry soft cloth.
Front grille
1. Open the front grille.
• Hold the grille by the tabs on the two sides
and lift it until it stops with a click.
2. Remove the front grille.
• Open the front panel further while
sliding it to either the left or right and
pulling it toward you. This will disconnect
the rotation dowel on one side. Then
disconnect the rotation dowel on the
other side in the same manner.
3. Clean the front grille.
• Wipe it with a soft cloth soaked in water.
• Only neutral detergent may be used.
• In case of washing the grille with water, dry it with cloth, dry it up in the shade after washing.
4. Attach the front grille.
• Align the rotation dowels on the left and right of the front panel with
the slots, then push them all the way in.
• Close the front panel slowly. (Press the panel at both sides and the
center.)
CAUTION
• When the packaging materials are attached to the front panel, please remove
them.
• Don’t touch the metal parts of the indoor unit. If you touch those parts,
this may cause an injury.
• When removing or attaching the front grille, use a robust and stable stool
and watch your steps carefully.
• When removing or attaching the front grille, support the grille securely with
hand to prevent it from falling.
• For cleaning, do not use hot water above 40 °C, benzine, gasoline,
thinner, nor other volatile oils, polishing compound, scrubbing brushes, nor other hand stuff.
• After cleaning, make sure that the front grille is securely fixed.
200
System Configuration
Instruction
SiEBE18-526
Filters
1. Open the front grille.
2. Pull out the air filters.
• Push a little upwards the tab at the center of
each air filter, then pull it down.
3. Take off the air
purifying filter with
photocatalytic
deodorizing function.
• Press the top of the
aircleaning filter onto the
tabs (3 tabs at top). Then
press the bottom of the
filter up slightly, and press
it onto the tabs (2 at
bottom) (3 at bottom).
4. Clean or replace each filter.
tabs (3 tabs at top)
tabs (2 at bottom)
50class
tabs (3 tabs at top)
tabs (3 at bottom)
60,71class
See below.
5. Set the air filter, air purifying filter with
photocalytic deodorizing function as they
were and close the front grille.
• Press the front panel at both sides and the center.
Air Filter
1. Wash the air filters with water or clean them with vacuum cleaner.
• If the dust does not come off easily, wash them with neutral detergent
thinned with lukewarm water, then dry them up in the shade.
• It is recommended to clean the air filters every two weeks.
Air purifying filter with photocatalytic deodorizing function. (gray)
The air purifying filter with photocatalytic deodorizing function can be renewed by washing it with
water once every 6 months. We recommend replacing it once every 3 years.
[ Maintenance ]
1.
2.
3.
4.
Remove dust with a vacuum cleaner and wash lightly with water.
If it is very dirty, soak it for 10 to 15 minutes in water mixed with a neutral cleaning agent.
After washing, shake off remaining water and dry in the shade.
Since the material is made out of paper, do not wring out the filter when removing water from it.
[ Replacement]
1. Remove the tabs on the filter frame and replace with a new filter.
• Dispose of the old filter as flammable waste.
System Configuration
201
Instruction
SiEBE18-526
Check
Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.
Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit.
Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
• If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the
service shop if this is the case.
Before a long idle period
1. Operate the “FAN only” for several hours on a fine day to dry out the
inside.
• Press “MODE” button and select “FAN” operation.
• Press “ON/OFF” button and start operation.
2. After operation stops, turn off the breaker for the room air conditioner.
3. Clean the air filters and set them again.
4. Take out batteries from the remote control.
• When a multi outdoor unit is connected, make sure the heating operation is not used at the other room
before you use the fan operation.
NOTE
• Operation with dirty filters:
(1) cannot deodorize the air.
(2) cannot clean the air.
(3) results in poor heating or cooling.
(4) may cause odour.
• To order air purifying filter with photocatalytic deodorizing function contact to the service shop there
you bought the air conditioner.
• Dispose of old filters as burnable waste.
Item
Air purifying filter with photocatalytic deodorizing
function. (without frame) 1 set
202
Part No.
KAF952A42
System Configuration
Instruction
SiEBE18-526
FDXS25/35C, CDXS50/60C
Care and Cleaning
CAUTION
• Only a qualified service person is allowed to
perform maintenance.
• Before cleaning, be sure to stop the operation
and turn the breaker OFF.
Cleaning the air filter.
1. Removing the air filter.
• Rear suction
Pull the bottom side of the air filter backwards, over the 3 bends.
• Bottom suction
Pull the filter over the 3 bends situated at the backside of the unit.
2. Cleaning the air filter.
Remove dust from the air filter using a vacuum cleaner and
gently rinse them in cool water. Do not use detergent or hot
water to avoid filter shrinking or deformation. After cleaning
dry them in the shade.
3. Replacing the air filter.
• Rear suction
Hook the filter behind the flap situated at the top of the
unit and push the other side gently over the 3 bends.
• Bottom suction
Hook the filter behind the flap situated at the middle of the unit and push the other side gently
over the 3 bends.
Main unit
Force
Filter
Force
In case of back side
System Configuration
Attach the filter to the
main unit while
pushing down on the
tabs.
In case of bottom side
203
Instruction
SiEBE18-526
Cleaning the drain pan
• Clean the drain pan periodically, or drain piping may be clogged with dust and may result in water leakage.
Ask your DAIKIN dealer to clean them.
• Prepare a cover locally to prevent any dust in the air around the indoor unit from getting in the drain pan, if
there is a great deal of dust present.
CAUTION
• Do not operate the air conditioner without filters, this to avoid dust accummulation inside the
unit.
• Do not remove the air filter except when cleaning.
Unnecessary handling may damage the filter.
• Do not use gasoline, benzene, thinner, polishing powder, liquid insecticide, It may cause discoloring or
warping.
• Do not let the indoor unit get wet. It may cause an electric shock or a fire.
• Operation with dusty air filters lowers the cooling and heating capacity and wastes energy.
• The suction grille is option.
• Do not use water or air of 50°C or higher for cleaning air filters and outside panels.
Check
Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.
Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit.
Check that the earth wire is not disconnected or broken.
Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
• If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the
service shop if this is the case.
Before a long idle period
1. Operate the “fan only” for several hours on a fine day to dry out the inside.
• Press “MODE” button and select “fan”operation.
• Press “ON/OFF” button and start operation.
2. Clean the air filters and set them again.
3. Take out batteries from the remote control.
4. Turn OFF the breaker for the room air conditioner.
• When a multi outdoor unit is connected, make sure the heating operation is not used at the
other room beforeyou use the fan operation.
204
System Configuration
Instruction
SiEBE18-526
FLXS25/35/50/60B
Care and Cleaning
CAUTION
Before cleaning, be sure to stop the operation and
turn the breaker OFF.
Units
Indoor unit, Outdoor unit and Remote control
1. Wipe them with dry soft cloth.
Front grille
1. Open the front grille.
• Hold the grille by the tabs on the two sides and lift
it unitl it stops.
ON
OFF
2. Clean the front grille
• Wipe it with a soft cloth soaked in water.
• Only neutral detergent may be used.
• In case of washing the grille with water, dry it with
cloth, dry it up in the shade after washing.
3. Close the front grille
• Push the grille at the 5 points indicated by .
• Operation without air filters may result in troubles
as dust will accumulate inside the indoor unit.
ON
OFF
CAUTION
•
•
•
•
Don’t touch the metal parts of the indoor unit. If you touch those parts, this may cause an injury.
When opening and closing the front grille, use a robust and stable stool and watch your steps carefully.
When opening and closing the front grille, support the grille securely with hand to prevent it from falling.
For cleaning, do not use hot water above 40 °C, benzine, gasoline, thinner, nor other volatile oils,
polishing compound, scrubbing brushes, nor other hand stuff.
• After cleaning, make sure that the front grille is securely fixed.
System Configuration
205
Instruction
SiEBE18-526
Filters
1. Open the front grille.
2. Pull out the air filters.
• Push upwards the tab at the center of each air
filter, then pull it down.
ON
OFF
3. Take off the air purifying filter,
photocatalytic deodorizing filter.
• Hold the recessed parts of the frame and unhook
the four claws.
ON
OFF
4. Clean or replace each filter.
See below.
Air purifying filter
or Photocatalytic
deodorizing filter
5. Set the air filter, air purifying filter and
photocatalytic deodorizing filter as
they were and close the front grille.
ON
OFF
• Insert claws of the filters into slots of the front grille.
• Push the grille at the 5 points.
Air Filter
1. Wash the air filters with water or clean them
with vacuum cleaner.
• If the dust does not come off easily, wash them with neutral detergent
thinned with lukewarm water, then dry them up in the shade.
• It is recommended to clean the air filters every two weeks.
Air Purifying Filter (green)
(Replace approximately once every 3 months.)
1. Detach the filter element and attach a new one.
• Insert with the green side up.
• It is recommended to replace the air purifying filter every three months.
Photocatalytic Deodorizing Filter (gray)
[ Maintenance ]
1. Dry the photocatalytic deodorizing filter in the sun.
• After removing the dust with a vacuum cleaner, place the filter in the sun for approximately 6 hours.
By drying the photocatalytic deodorizing filter in the sun, its deodorizing and antibacterial capabilities
are regenerated.
• Because the filter material is paper, it can not be cleaned with water.
• It is recommended dry the filter once every 6 months.
[ Replacement ]
1. Detach the filter element and attach a new one.
206
System Configuration
Instruction
SiEBE18-526
Check
Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.
Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit.
Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the
service shop if this is the case.
Before a long idle period
1. Operate the “FAN only” for several hours on a fine day to dry out the
inside.
• Press “MODE” button and select “FAN”operation.
• Press “ON/OFF” button and start operation.
2. After operation stops, turn off the breaker for the room air conditioner.
3. Clean the air filters and set them again.
4. Take out batteries from the remote control.
• When a multi outdoor unit is connected, make sure the heating operation is not used at the other room
befrore you use the fan operation.
NOTE
• Operation with dirty filters :
(1) cannot deodorize the air.
(2) cannot clean the air.
(3) results in poor heating or cooling.
(4) may cause odour.
• The air purifying filter and Photocatalytic deodorizing filter cannot be reused, even if washed.
• In principle, there is no need to replace the photocatalytic deodorizing filter. Remove the dust
periodically with a vacuum cleaner. However, it is recommended to replace the filter in the following
cases.
(1) The paper material is torn or broken during cleaning.
(2) The filter has become extremely dirty after long use.
• To order air purifying filter or Photocatalytic deodorizing filter, contact to the service shop where you
bought the air conditioner.
• Dispose of old air filters as non-burnable waste and Photocatalytic deodorizing filters as
burnable waste.
Item
Part No.
Photocatalytic deodorizing filter (with frame)
KAZ917B41
Photocatalytic deodorizing filter (without frame)
KAZ917B42
Air purifying filter (with frame)
KAF925B41
Air purifying filter (without frame)
KAF925B42
System Configuration
207
Instruction
SiEBE18-526
FVXS25/35/50B
Care and Cleaning
CAUTION
Before cleaning, be sure to stop the operation and
turn the breaker OFF.
Units
Indoor unit, Outdoor unit and Remote control
1. Wipe them with dry soft cloth.
Front grille
1. Open the front grille.
• Press the two
places on the left and right of
P U S H
the front grille.
2. Remove the front grille.
• Remove the chain.
• Allowing the grille to fall forward will enable you to
remove it.
Chain
3. Clean the front grille
• Wipe softly with a damp cloth.
• Only neutral detergent may be used.
• In case of washing the grille with water, dry it with
cloth, dry it up in the shade after washing.
4. Attach the front grille.
• Insert the front grille into the grooves of the unit
(3 places).
• Attach the chain to the right, inner-side of the front
grille.
• Close the grille slowly.
Place front grille in grooves.
CAUTION
•
•
•
•
•
Hold the front grille firmly so that it does not fall.
Do not touch the metal parts on the inside of the indoor unit, as it may result in injury.
When removing or attaching the front grille, use a robust and stable stool and watch your steps carefully.
When removing or attaching the front grille, support the grille securely with hand to prevent it from falling.
For cleaning, do not use hot water above 40 °C, benzine, gasoline, thinner, nor other volatile oils,
polishing compound, scrubbing brushes, nor other hand stuff.
• After cleaning, make sure that the front grille is securely fixed.
208
System Configuration
Instruction
SiEBE18-526
Filters
1. Open the frontgrille.
2. Remove the air filter.
• Press the claws on the right and left of the air filter down
slightly, then pull upward.
3. Take off the air purifying filter,
Photocatalytic deodorizing filter.
• Hold the tabs of the frame, and remove the claws in 4 places.
4. Clean or replace each filter.
See below.
5. Set the air filter, air purifying filter
and photocatalytic deodorizing
filter as they were and close the
front grille.
Air purifying filter
or photocatalytic
deodorizing filter
Air filter
• Operation without air filters may result in troubles
as dust will accumulate inside the indoor unit.
Air Filter
1. Wash the air filters with water or clean them with
vacuum cleaner.
• If the dust does not come off easily, wash them with neutral detergent
thinned with lukewarm water, then dry them up in the shade.
• It is recommended to clean the air filters every two weeks.
Air Purifying Filter (green)
(Replace approximately once every 3 months.)
1. Detach the filter element and attach a new one.
• Insert with the green side up.
• It is recommended to replace the air purifying filter every three months.
Photocatalytic Deodorizing Filter (gray)
[ Maintenance ]
1. Dry the photocatalytic deodorizing filter in the sun.
• After removing the dust with a vacuum cleaner, place the filter in the sun for approximately 6 hours.
By drying the photocatalytic deodorizing filter in the sun, its deodorizing and antibacterial capabilities
are regenerated.
• Because the filter material is paper, it can not be cleaned with water.
• It is recommended dry the filter once every 6 months.
[ Replacement ]
1. Detach the filter element and attach a new one.
System Configuration
209
Instruction
SiEBE18-526
Check
Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.
Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit.
Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the
service shop if this is the case.
Before a long idle period
1. Operate the “FAN only” for several hours on a fine day to dry out the
inside.
• Press “MODE” button and select “FAN”operation.
• Press “ON/OFF” button and start operation.
2. After operation stops, turn off the breaker for the room air conditioner.
3. Clean the air filters and set them again.
4. Take out batteries from the remote controller.
• When a multi outdoor unit is connected, make sure the heating operation is not used at the other room
befure you use the fan operation.
NOTE
• Operation with dusty air filters lowers the cooling (heating) capacity and wastes energy.
Air is also prevented from flowing smoothly through the unit creating a noise.
• Operation with dirty filters :
(1) cannot deodorize the air.
(2) cannot clean the air.
(3) results in poor heating or cooling.
(4) may cause odour.
• The air purifying filter and Photocatalytic deodorizing filter cannot be reused, even if washed.
• In principle, there is no need to replace the photocatalytic deodorizing filter. Remove the dust
periodically with a vacuum cleaner. However, it is recommended to replace the filter in the
following cases.
(1) The paper material is torn or broken during cleaning.
(2) The filter has become extremely dirty after long use.
• To order air purifying filter or Photocatalytic deodorizing filter, contact to the service shop where
you bought the air conditioner.
• Dispose of old air filters as non-burnable waste and Photocatalytic deodorizing filters as
burnable waste.
Item
210
Part No.
Photocatalytic deodorizing filter (with frame)
KAZ917B41
Photocatalytic deodorizing filter (without frame)
KAZ917B42
Air purifying filter (with frame)
KAF925B41
Air purifying filter (without frame)
KAF925B42
System Configuration
Instruction
SiEBE18-526
2.2.15 Troubleshooting
Trouble Shooting
These cases are not troubles.
The following cases are not air conditioner troubles but have some reasons. You may just continue using it.
Case
Explanation
Operation does not start soon.
• When ON/OFF button was
pressed soon after operation
was stopped.
• When the mode was
reselected.
• This is to protect the air conditioner.
You should wait for about 3 minutes.
Hot air does not flow out soon
after the start of heating
operation.
• The air conditioner is warming up. You should wait for 1 to 4
minutes.
(The system is designed to start discharging air only after it
has reached a certain temperature.)
The heating operation stops
suddenly and a flowing sound
is heard.
• The system is taking away the frost on the outdoor unit.
You should wait for about 3 to 8 minutes.
The outdoor unit emits water or
steam.
In HEAT mode
• The frost on the outdoor unit melts into water or steam
when the air conditioner is in defrost operation.
In COOL or DRY mode
• Moisture in the air condenses into water on the cool
surface of outdoor unit piping and drips.
Mists come out of the indoor
unit.
This happens when the air in the room is cooled into mist by
the cold air flow during cooling operation.
The indoor unit gives out odour. This happens when smells of the room, furniture, or
cigarettes are absorbed into the unit and discharged with the
air flow.
(If this happens, we recommend you to have the indoor unit
washed by a technician. Consult the service shop where you
bought the air conditioner.)
The outdoor fan rotates while
the air conditioner is not in
operation.
After operation is stopped:
• The outdoor fan continues rotating for another 60
seconds for system protection.
While the air conditioner is not in operation:
• When the outdoor temperature is very high, the out door
fan starts rotating for system protection.
The operation stopped
suddenly.
(OPERATION lamp is on)
For system protection, the air conditioner may stop
operating on a sudden large voltage fluctuation.
It automatically resumes operation in about 3 minutes.
System Configuration
211
Instruction
SiEBE18-526
Check again.
Please check again before calling a repair person.
Case
The air conditioner does not
operate.
(OPERATION lamp is off)
Cooling (Heating) effect is poor.
Check
• Hasn’t a breaker turned OFF or a fuse blown?
• Isn’t it a power failure?
• Are batteries set in the remote control?
• Is the timer setting correct?
• Are the air filters clean?
• Is there anything to block the air inlet or the outlet of the
indoor and the outdoor units?
• Is the temperature setting appropriate?
• Are the windows and doors closed?
• Are the air flow rate and the air direction set appropriately?
• Is the unit set to the INTELLIGENT EYE mode?
Operation stops suddenly.
(OPERATION lamp flashes.)
• Are the air filters clean?
• Is there anything to block the air inlet or the outlet of the
indoor and the outdoor units?
Clean the air filters or take all obstacles away and turn the
breaker OFF. Then turn it ON again and try operating the air
conditioner with the remote control. If the lamp still flashes,
call the service shop where you bought the air conditioner.
• Are operation modes all the same for indoor units connected
to outdoor units in the multi system?
If not, set all indoor units to the same operation mode and
confirm that the lamps flash.
Moreover, when the operation mode is in “AUTO”, set all
indoor unit operation modes to “COOL” or “HEAT” for a
moment and check again that the lamps are normal.
If the lamps stop flashing after the above steps, there is no
malfunction.
An abnormal functioning
happens during operation.
212
• The air conditioner may malfunction with lightning or radio
waves. Turn the breaker OFF, turn it ON again and try
operating the air conditioner with the remote control.
System Configuration
Instruction
SiEBE18-526
Call the service shop immediately.
WARNING
When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF.
Continued operation in an abnormal condition may result in troubles, electric shocks or fire.
Consult the service shop where you bought the air conditioner.
Do not attempt to repair or modify the air conditioner by yourself.
Incorrect work may result in electric shocks or fire.
Consult the service shop where you bought the air conditioner.
If one of the following symptoms takes place, call the service shop immediately.
The power cord is abnormally hot or damaged.
An abnormal sound is heard during operation.
The safety breaker, a fuse, or the earth leakage breaker
cuts off the operation frequently.
A switch or a button often fails to work properly.
There is a burning smell.
Water leaks from the indoor unit.
After a power failure
The air conditioner automatically resumes
operation in about 3 minutes. You should just
wait for a while.
Turn the breaker
OFF and call the
service shop.
Lightning
If lightning may strike the neighbouring area,
stop operation and turn the breaker OFF for
system protection.
Disposal requirements
Your air conditioning product is marked with this symbol. This means that electrical and
electronic products shall not be mixed with unsorted household waste.
Do not try to dismantle the system yourself: the dismantling of the air conditioning
system, treatment of the refrigerant, of oil and of other parts must be done by a
qualified installer in accordance with relevant local and national legislation.
Air conditioners must be treated at a specialized treatment facility for re-use, recycling and recovery. By
ensuring this product is disposed of correctly, you will help to prevent potential negative consequences
for the environment and human health. Please contact the installer or local authority for more
information.
Batteries must be removed from the remote control and disposed of separately in accordance with
relevant local and national legislation.
We recommend periodical maintenance
In certain operating conditions, the inside of the air conditioner may get foul after several seasons of
use, resulting in poor performance. It is recommended to have periodical maintenance by a specialist
aside from regular cleaning by the user. For specialist maintenance, contact the service shop where
you bought the air conditioner.
The maintenance cost must be born by the user.
System Configuration
213
Instruction
SiEBE18-526
Fault diagnosis
FAULT DIAGNOSIS BY REMOTE CONTROL
In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes.
1. When the TIMER CANCEL button is held down for 5 seconds, a “
temperature display section.
” indication flashes on the
ON
C
HOME LEAVE
ON/OFF
POWERFUL
TEMP
MODE
SILENT
FAN
ON
SWING
SENSOR
CANCEL
TIMER CANCEL button
It cancels the timer setting.
OFF
TIMER
2. Press the TIMER CANCEL button repeatedly until a continuous beep is produced.
• The code indication changes as shown below, and notifies with a long beep.
SYSTEM
INDOOR UNIT
OUTDOOR
UNIT
CODE
00
U0
U2
U4
A1
A5
A6
C4
C9
EA
E5
E6
E7
E8
F3
F6
H6
H8
H9
J3
J6
L4
L5
P4
MEANING
NORMAL
REFRIGERANT SHORTAGE
DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
INDOOR PCB DEFECTIVENESS
HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR
FAN MOTOR FAULT
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
FAULTY SUCTION AIR TEMPERATURE SENSOR
COOLING-HEATING SWITCHING ERROR
OL STARTED
FAULTY COMPRESSOR START UP
DC FAN MOTOR FAULT
OPERATION HALT DUE TO DETECTION OF INPUT OVER CURRENT
HIGH TEMPERATURE DISCHARGE PIPE CONTROL
HIGH PRESSURE CONTROL (IN COOLING)
OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
CT ABNORMALITY
FAULTY SUCTION AIR TEMPERATURE SENSOR
FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
OUTPUT OVERCURRENT
FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR
NOTE
1. A short beep and two consecutive beeps indicate non-corresponding codes.
2. To cancel the code display, hold the TIMER CANCEL button down for 5 seconds. The code display also
cancel itself if the button is not pressed for 1 minute.
214
System Configuration
Instruction
SiEBE18-526
LED ON OUTDOOR UNIT PCB
3MXS, 3MKS, 4MXS, 4MKS series
GREEN
RED
MICROCOMPUTER
NORMAL
MALFUNCTION
DETECTION
LED-A
LED1 LED2 LED3 LED4
DIAGNOSIS
NORMAL
CHECK INDOOR UNIT
HIGH PRESSURE PROTECTOR WORKED OR FREEZE-UP IN OPERATING UNIT OR STAND-BY UNIT
∗ OVERLOAD RELAY WORKED OR HIGH DISCHARGE PIPE TEMPERATURE
FAULTY COMPRESSOR START
INPUT OVERCURRENT
∗ THERMISTOR OR CT ABNORMALITY
HIGH TEMPERATURE SWITCHBOX
HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
∗ OUTPUT OVERCURRENT
∗ REFRIGERANT SHORTAGE
LOW VOLTAGE TO MAIN CIRCUIT OR MOMENTARY VOLTAGE LOSS
REVERSING SOLENOID VALVE SWITCHING FAILURE
FAN MOTOR FAULT
[NOTE 1]
POWER SUPPLY FAULT OR [NOTE 2]
GREEN
RED
NORMALLY
FLASHING
NORMALLY OFF
ON
FLASHING
OFF
IRRELEVANT
LED ON OUTDOOR UNIT PCB
2MXS, 2MKS series
GREEN
MICROCOMPUTER
NORMAL
DIAGNOSIS
LED-A
NORMAL
CHECK INDOOR UNIT
[NOTE 1]
POWER SUPPLY FAULT OR [NOTE 2]
GREEN
NORMALLY
FLASHING
ON
FLASHING
OFF
NOTES
1. Turn the power off and then on again. If the LED display recurs,the outdoor unit PCB is faulty.
2. Diagnosis marked
∗ Do not apply to some cases. For details, refer to the service guide.
System Configuration
215
Instruction
2.3
SiEBE18-526
Ceiling Mounted Cassette Type
5 12
2
4
1
3
7
hr
C
hr
6
8
NOT
AVAILABLE
TEST
9
11
10
13
L H
14
21
20
TEST
19
17
15
16
18
22
1
j
k
i
a
e
d
h
f
g
e
3
b
d
c
e
f
hr
C
H
l
2
4
[1]
216
System Configuration
Instruction
SiEBE18-526
1. WHAT TO DO BEFORE
OPERATION
This operation manual is for the following systems
with standard control. Before initiating operation,
contact your Daikin dealer for the operation that
corresponds to your system.
• Pair system
Indoor unit
• Heat pump type
This system provides cooling, heating, automatic,
program dry, and fan operation modes.
• Cooling only type
This system provides cooling, program dry, and
fan operation modes.
PRECAUTIONS FOR GROUP CONTROL
SYSTEM OR TWO REMOTE CONTROL
CONTROL SYSTEM
This system provides two other control systems
beside individual control (one remote controller
controls one indoor unit) system. Confirm the
following if your unit is of the following control
system type.
Outdoor unit
Unit with
remote
controller
• Group control system
One remote controller controls up to 16 indoor
units.
All indoor units are equally set.
• Multi system
Indoor unit
Indoor unit
Outdoor unit
Unit with
remote
controller
Unit with
remote
controller
NOTE
• If the unit you purchased is controlled by a
infrared remote controller, also refer to the
infrared remote controller’s operation manual.
If your installation has a customized control
system, ask your Daikin dealer for operation that
corresponds to your system.
• Two remote controllers control system
Two remote controllers control one indoor unit
(In case of group control system, one group of
indoor units)
The unit is individually operated.
NOTE
• Contact your Daikin dealer in case of changing
the combination or setting of group control and
two remote controllers control system.
Names and functions of parts
Refer to figure 2 on page [1]
a
b
c
d
e
f
g
h
i
j
k
l
System Configuration
Indoor unit
Outdoor unit
• The external appearance of the outdoor
unit varies depending on its capacity
class. The outdoor unit shown in the
figure is for reference to indicate
features.Contact your Daikin Dealer and
verify which outdoor unit you have.
Remote controller
Inlet air
Discharged air
Air outlet
Air flow flap (at air outlet)
Refrigerant piping, connection electric wire
Drain pipe
Air inlet
The built-in air filter removes dust and dirt.
Drain pumping out device (built-in)
Drains water removed from the room
during cooling.
Ground wire
Wire to ground from the outdoor unit to
prevent electrical shocks.
217
Instruction
SiEBE18-526
2. SAFETY CONSIDERATIONS
We recommend that you read this instruction
manual carefully before use to gain full advantage
of the function of the air conditioner, and to avoid
malfunction due to erroneous handling.
This air conditioner comes under the term “appliances not accessible to the general public”.
• The precautions described below are WARNING and CAUTION. These are very important
precautions concerning safety. Be sure to
observe all of them without fail.
WARNING.. These are the matters with possibilities leading to serious consequences such as death or serious
injury due to erroneous handling.
CAUTION .. These are the matters with possibilities leading to injury or material
damage due to erroneous handling
including probabilities leading to
serious consequences in some
cases.
• After reading, keep this manual at a place
where any user can read at any time. Furthermore, make certain that this operation manual
is handed to a new user when he takes over
the operation.
WARNING
Avoid exposure of your body directly to the cold
air for a long time, or avoid excessive exposure
of your body to the cold air.
Otherwise, your physical condition may be deteriorated and/or your health may be ruined.
When the air conditioner is in abnormal conditions (smell of something burning, etc), unplug
the power cord from the outlet, and contact the
dealer where you purchased the air conditioner.
Continued operation under such circumstances may
result in a failure, electric shock, and fire.
Ask your dealer for installation of the air
conditioner.
Incomplete installation performed by yourself may
result in a failure, a water leakage, electric shock,
and fire.
Ask your dealer for improvement, repair, and
maintenence.
Incomplete improvement, repair, and maintenance
may result in a failure, a water leakage, electric
shock, and fire.
Do not insert your finger, a stick, etc., into the
air inlet, outlet, and fan blades.
A fan in high-speed running may result in injury.
For refrigerant leakage, consult your dealer.
When the air conditioner is to be installed in a small
room, it is necessary to take proper measures so
that the amount of any leaked refrigerant dose not
exceed the limiting concentration even when it
leaks. If the refrigerant leaks exceeding
218
the level of limiting concentration, an oxygen
deficiency accident may happen.
For installation of separately sold component
parts, ask a specialist.
Be sure to use the separately sold component parts
designated by our company.
Incomplete installation performed by yourself may
result in a failure, a water leakage, electric shock,
and fire.
Ask your dealer to move and reinstall the air
conditioner.
Incomplete installation may result in a failure, a water
leakage, electric shock, and fire.
The refrigerant in the air conditioner is safe and
normally does not leak. If the refrigerant leaks
inside the room, the contact with a fire of a
burner, a heater or a cooker may result in a
harmful gas.
Do not use the air conditioner until when a service
person confirms to finish repairing the portion where
the refrigerant leaks.
CAUTION
Do not use the air conditioner for other
purposes.
Do not use the air conditioner for a special
application such as the storage of foods, animals
and plants, precision machines, and art objects as
otherwise the deterioration of quality may result.
Do not remove the air outlet of the outdoor
unit.
The fan may get exposed and result in injury.
When the air conditioner is used in combination with burners or heaters, perform sufficient
ventilation.
Insufficient ventilation may result in an oxygen
deficiency accident.
Check and make sure that foundation blocks
are not damaged after a long use.
If they are left in a damaged condition, the unit
may fall and result in injury.
Neither place a flammable spray bottle near the
air conditioner not perform spraying.
Doing so may result in a fire.
To clean the air conditioner, stop operation, and
unplug the power cord from the outlet.
Otherwise, an electric shock and injury may result.
Do not operate the air conditioner with a wet
hand.
An electric shock may result.
Do not use any fuse with improper capacity.
The use of piece of wire and what not may result
in a failure and fire.
Do not place a burner or heater at a place
directly exposed to the wind from the air
conditioner.
Incomplete combustion of the burner or heater may
result.
Do not allow a child to mount on the outdoor
unit or avoid placing any object on it.
Falling or tumbling may result in injury.
System Configuration
Instruction
SiEBE18-526
Do not expose animals and plants directly to
the wind from the air conditioner.
Adverse influence to animals and plants may
result.
Do not wash the air conditioner with water.
An electric shock may result.
Do not install the air conditioner at any place
where flammable gas may leak out.
If the gas leaks out and stays around the air
conditioner, a fire may break out.
Be sure to install an earth leakage breaker.
Unless it is installed, an electric shock may result.
Be sure the air conditioner is electrically
grounded.
Do not connect the grounding conductor to a gas
pipe, water pipe, lightning arrester, and the
grounding conductor for a telephone.
Imperfect grounding work may result in an electric
shock.
Execute complete drain piping for perfect
drainage.
Incomplete piping may result in a water leakage.
The appliance is not intended for use by young
children or infirm persons without supervision.
Young children should be supervised to ensure
that they do not play with the appliance.
3. OPERATION RANGE
If the temperature or the humidity is beyond the
following conditions, safety devices may work and
the air conditioner may not operate, or sometimes,
water may drop from the indoor unit.
COOLING
OUTDOOR
UNIT
INDOOR
TEMPERATURE
RS50 · 60
RKS25 · 35 ·
50 · 60
RXS25 · 35 ·
50 · 60
D
B 21 to 32
3MKS50
4MKS58 · 75 ·
90
3MXS52
4MXS68 · 80
D
B 21 to 32
W 14 to 23
B
W 14 to 23
B
HUMIDITY
80% or
below
80% or
below
OUTDOOR
TEMPERATURE
D -10 to 46
B (-5)
D -10 to 46
B
HEATING
OUTDOOR
UNIT
INDOOR
TEMPERATURE
RXS25 · 35
DB
10 to 30
RXS50 · 60
DB
10 to 30
3MXS52
4MXS68 · 80
DB
10 to 30
System Configuration
OUTDOOR
TEMPERATURE
-14 to 24
DB
-15 to 20
WB
DB
WB
DB
WB
-14 to 24
-15 to 18
-14 to 21
-15 to 15.5
DB: Dry bulb temperature (°C)
WB: Wet bulb temperature (°C)
The setting temperature range of the remote control
is 16°C to 32°C.
The numerical value in a parenthesis shows the
operation range of the model for Australia.
4. INSTALLATION SITE
Regarding places for installation
• Is the air conditioner installed at a wellventilated place where there are no obstacles
around?
• Do not use the air conditioner in the following
places.
a. Filled with much mineral oil such as cutting oil
b. Where there is much salt such as a beach area
c. Where sulfured gas exists such as a hot-spring
resort.
d. Where there are considerable voltage fluctuations such as a factory or plant
e. Vehicles and vessels
f. Where there is much spray of oil and vapor
such as a cookery, etc.
g. Where there are machines generating electromagnetic waves.
h. Filled with acid and/or alkaline steam or vapor
• Is a snow protection measure taken?
For details, consult your dealer.
Regarding wiring
• All wiring must be performed by an authorized
electrician.
To do wiring, ask your dealer. Never do it by
yourself.
• Make sure that a separate power supply circuit
is provided for this air conditioner and that all
electrical work is carried out by qualified personnel according to local laws and regulations.
Pay attention to running noises, too
• Are the following places selected?
a. A place that can sufficiently withstand the
weight of the air conditioner with less running
noises and vibrations.
b. A place where the hot wind discharged from the
air outlet of outdoor unit and the running noises.
• Are you sure that there are no obstacles near
the air outlet of the outdoor unit?
Such obstacles may result in declined performance and increased running noises.
• If abnormal noises occur in use, stop the
operation of the air conditioner, and then
consult your dealer or our service station.
Regarding drainage of drain piping
• Is the drain piping executed to perform complete drainage?
If proper drainage is not carried out from the out-
219
Instruction
SiEBE18-526
door drain pipes during air-conditioning operation, chances are that dust and dirt are clogged
in the pipe. This may result in a water leakage
from the indoor unit. Under such circumstances,
stop the operation of the air conditioner, and then
consult your dealer or our service station.
5. NAME AND FUNCTION OF
EACH SWITCH AND
DISPLAY ON THE REMOTE
CONTROL
Refer to figure 1 on page [1]
1
2
3
4
5
6
ON/OFF BUTTON
Press the button and the system will start.
Press the button again and the system will
stop.
OPERATION LAMP (RED)
The lamp lights up during operation.
DISPLAY “
” (UNDER CENTRALIZED CONTROL)
When this display shows, the system is
UNDER CENTRALIZED CONTROL.
DISPLAY “
”“
”“
”“
”
(VENTILATION/AIR CLEANING)
This display shows that the total heat
exchange and the air cleaning unit are in
operation (These are optional accessories).
DISPLAY “
”“
”“
”“
”“
”
(OPERATION MODE)
This display shows the current OPERATION
MODE. For cooling only type, “
” (Auto)
and “
” (Heating) are not installed.
DISPLAY “
TEST ” (INSPECTION/TEST
OPERATION)
When the INSPECTION/TEST OPERATION
BUTTON is pressed, the display shows the
system mode is in.
DISPLAY “
” (PROGRAMMED TIME)
7
8
9
This display shows the PROGRAMMED
TIME of the system start or stop.
DISPLAY “
” (SET TEMPERATURE)
This display shows the set temperature.
DISPLAY “
” (FAN SPEED)
This display shows the set fan speed.
DISPLAY “
” (AIR FLOW FLAP)
10
Refer to “AIR FLOW DIRECTION ADJUST”.
220
DISPLAY “
” (TIME TO CLEAN AIR
11 FILTER)
Refer to “HOW TO CLEAN THE AIR FILTER”.
DISPLAY “
” (DEFROST)
12
Refer to “DEFROST OPERATION".
NON-FUNCTIONING DISPLAY
If that particular function is not available,
pressing the button may display the words
“NOT AVAILABLE” for a few seconds.
13 When running multiple units simultaneously
The “NOT AVAILABLE” message will only be
appear if none of the indoor units is equipped
with the function. If even one unit is equipped
with the function, the display will not appear.
TIMER MODE START/STOP BUTTON
14
Refer to “PROGRAM TIMER OPERATION”.
TIMER ON/ OFF BUTTON
15
Refer to “PROGRAM TIMER OPERATION”.
INSPECTION/TEST OPERATION
BUTTON
16
This button is used only by qualified service
persons for maintenance purposes.
PROGRAMMING TIME BUTTON
17 Use this button for programming “START and/
or STOP” time.
TEMPERATURE SETTING BUTTON
18 Use this button for SETTING TEMPERATURE.
FILTER SIGN RESET BUTTON
Refer to “HOW TO CLEAN THE AIR FILTER”.
FAN SPEED CONTROL BUTTON
20 Press this button to select the fan speed,
HIGH or LOW, of your choice.
19
21
22
OPERATION MODE SELECTOR BUTTON
Press this button to select OPERATION MODE.
AIR FLOW DIRECTION ADJUST BUTTON
Refer to “AIR FLOW DIRECTION ADJUST”.
NOTE
• For the sake of explanation, all indications are
shown on the display in figure 1 contrary to
actual running situations.
6. OPERATION PROCEDURE
Refer to figure 1 on page [1]
• Operating procedure varies with heat pump type
and cooling only type. Contact your Daikin dealer
to confirm your system type.
• To protect the unit, turn on the main power switch
6 hours before operation.
System Configuration
Instruction
SiEBE18-526
• If the main power supply is turned off during
operation, operation will restart automatically
after the power turns back on again.
COOLING, HEATING, AUTOMATIC, FAN,
AND PROGRAM DRY OPERATION
Operate in the following order.
OPERATION MODE SELECTOR
1
Press OPERATION MODE SELECTOR
button several times and select the OPERATION MODE of your choice as follows.
COOLING OPERATION ........................ “
HEATING OPERATION ......................... “
AUTOMATIC OPERATION .................... “
”
”
”
• In this operation mode, COOL/HEAT
changeover is automatically conducted.
FAN OPERATION .................................. “
”
DRY OPERATION ................................. “
”
• The function of this program is to decrease
the humidity in your room with the minimum
temperature decrease.
• Micro computer automatically determines
TEMPERATURE and FAN SPEED.
• This system dose not go into operation if the
room temperature is below 16°C.
Refer to figure 3 on page [1]
• For cooling only type, “ COOLING ”, “ FAN ” and
“ DRY ” operation are able to select.
2
ON/OFF
Press ON/OFF button
OPERATION lamp lights up or goes off and the
system starts or stops OPERATION.
[EXPLANATION OF HEATING OPERATION]
DEFROST OPERATION
• As the frost on the coil of an outdoor unit increase,
heating effect decreases and the system goes into
DEFROST OPERATION.
• The indoor unit fan stops and the remote control
display shows “
”.
• After 6 to 8 minutes (maximum 10 minutes) of
DEFROST OPERATION, the system returns to
HEATING OPERATION.
Regarding outside air temperature and
heating capacity
• The heating capacity of the air conditioner declines
as the outside air temperature falls.In such a case,
use the air conditioner in combi-nation with other
heating systems.
System Configuration
• A warm air circulating system is employed, and
therefore it takes some time until the entire room
is warmed up after the start of operation.
• An indoor fan runs to discharge a gentle wind
automatically until the temperature inside the air
conditioner reaches a certain level. At this time,
the remote controller displays “
”. Leave it
as it stands and wait for a while.
• When the warm air stays under the ceiling and
your feet are cold, we recommend that you use a
circulator (a fan to circulate the air inside the
room). For details,consult your dealer.
ADJUSTMENT
For programming TEMPERATURE, FAN SPEED
and AIR FLOW DIRECTION, follow the procedure
shown below.
TEMPERATURE SETTING
Press TEMPERATURE SETTING button and
program the setting temperature.
Each time this button is pressed,setting
temperature rises 1°C.
Each time this button is pressed, setting
temperature lowers 1°C.
• The setting is impossible for fan operation.
NOTE
• The setting temperature range of the remote
controller is 16°C to 32°C.
FAN SPEED CONTROL
Press FAN SPEED CONTROL button.
High or Low fan speed can be selected.
Micro computer may sometimes control the fan
speed in order to protect the unit.
AIR FLOW DIRECTION ADJUST
Press the AIR FLOW DIRECTION ADJUST button
to adjust the air flow angle.
Up and down adjustment
• The movable limit of the flap is changeable.
Contact your Daikin dealer for details.
221
Instruction
SiEBE18-526
Press the AIR FLOW DIRECTION ADJUST
button to select the air direction as following.
swing
The AIR FLOW FLAP display
swings as shown left and the
air flow direction continuously
varies. (Automatic swing
setting)
2
Press the PROGRAMMING TIME button and
set the time for stopping or starting the
system.
When this button is pressed, the time
advances by 1 hour.
Press AIR FLOW DIRECTION
ADJUST button to select the air
direction of your choice.
The AIR FLOW FLAP display
stops swinging and the air
flow direction is fixed (Fixed
air flow direction setting).
PROGRAMMING TIME
When this button is pressed, the time
goes backward by 1 hour.
3
TIMER ON/OFF
Press the TIMER ON/OFF button.
MOVEMENT OF THE AIR FLOW FLAP
For the following conditions, micro computer
controls the air flow direction so it may be different
from the display.
Operation
Heating
mode
Operation • When starting operation
condition
• When room temperature is higher
than the set temperature
• At defrost operation
(Air is blown horizontally to prevent
the cool air from being blown
directly onto anyone in the room.)
Operation mode includes automatic operation.
PROGRAM TIMER OPERATION
Operate in the following order.
• The timer is operated in the following two ways.
• Programming the stop time (
) .... The
system stopsoperating after the set time has
elapsed.
• Programming the start time (
) .... The
system startsoperating after the set time has
elapsed.
• The timer can be programmed a maximum of 72
hours.
• The start and the stop time can be simultaneously programmed.
1
TIMER MODE START/STOP
Press the TIMER MODE START/STOP
button several times and select the
mode on the display.
The display flashes.
For setting the timer stop..... “
For setting the timer start .... “
222
”
”
The timer setting procedure ends.
The display “
or
” changes from
flashing light to a constant light.
Refer to figure 4 on page [1]
NOTE
• When setting the timer Off and On at the same
time, repeat the above procedure from 1 to 3
once again.
When the timer is programmed to stop the system
after 3 hours and start the system after 4 hours, the
system will stop after 3 hours and then 1 hour later
the system will start.
• After the timer is programmed, the display shows
the remaining time.
• Press the TIMER ON/OFF button once again to
cancel programming. The display vanishes.
7. OPTIMUM OPERATION
Observe the following precautions to ensure the
system operates.
• Adjust the room temperature properly for a
comfortable environment. Avoid excessive heating
or cooling.
• Prevent direct sunlight from entering a room during
cooling operation by using curtains or blinds.
• Ventilate the room regularly.Using the unit for long
periods of time requires attentive ventilation of the
room.
• Do not place items that might be damaged by
water under the indoor unit.
Water may condensate and drip if the humidity
reaches 80% or if the drain exit gets clogged.
• Keep doors and windows closed. If the doors and
windows remain open, room air will flow out and
cause to decrease the effect of cooling and
heating.
System Configuration
Instruction
SiEBE18-526
• Do not place other heaters directly below the
indoor unit.
They may deform due to the heat.
• Never place objects near the air inlet and the air
outlet of the unit. It may cause deterioration in the
effect or stop in the operation.
• Turn off the main power supply switch when it is
not used for long periods of time. When the main
power switch is turned on, some watts of electricity is being used even if the system is not operating. Turn off the main power supply switch for
saving energy. When reoperating, turn on the
main power supply switch 6 hours before operation for smooth running (Refer to MAINTENANCE).
• When the display shows “
” (TIME TO
CLEAN AIR FILTER), ask a qualified service
person to clean the filters (Refer to MAINTENANCE).
Fig. 1
2. Detach the air filter
Pull the hook of the air filter out diagonally
downward, and remove the filter.
Fig. 2
8. MAINTENANCE
(FOR SERVICE PERSONNEL)
ONLY A QUALIFIED SERVICE PERSON IS
ALLOWED TO PERFORM MAINTENANCE
3. Clean the air filter.
Use vacuum cleaner A) or wash the air filter with
water B).
A) Using a vacuum cleaner
IMPORTANT!
• BEFORE OBTAINING ACCESS TO TERMINAL DEVICES, ALL POWER SUPPLY
CIRCUITS MUST BE INTERRUPTED
• To clean the air conditioner, be sure to stop
operation, and turn the power switch off.
Otherwise, an electric shock and injury may
result.
• Do not wash the air conditioner with water
Doing so may result in an electric shock.
• Be careful with a scaffold or stagingCaution
must be exercised because of work at a high
place.
B) Washing with water
When the air filter is very dirty, use
soft brush and neutral detergent.
Remove water and dry in the shade.
HOW TO CLEAN THE AIR FILTER
Clean the air filter when the display shows “
(TIME TO CLEAN AIR FILTER).
”
It will display that it will operate for a set amount of
time.
Increase the frequency of cleaning if the unit is
installed in a room where the air is extremely
contaminated.
If the dirt becomes impossible to clean, change
the air filter (Air filter for exchange is optional)
NOTE
• Do not wash the air conditioner with hot water of
more than 50°C, as doing so may result in discoloration and/or deformation.
• Do not expose it to fire, as doing so may result in
burning.
4. Fix the air filter
(1) Hook the air filter to a protrusion on the
suction grille.
(2) Push the lower part of the air filter onto the
protrusion at the lower part of the suction
grille, and fix the air filter there.
Fig. 3
1. Open the suction grille.
Push it downward slowly while pressing
horizontally the buttons provided on two spots.
(Follow the same procedure for closing).
System Configuration
223
Instruction
5. Shut the suction grille.
Refer to item No.1.
SiEBE18-526
Directly apply the type of detergent used for
cleaning ventilation fans or ovens, wait 10
minutes, and then rinse with water.
6. After turning on the power, press FILTER
SIGN RESET button.
The “TIME TO CLEAN AIR FILTER” display
vanishes.
5. Fix the air filter.
Refer to “HOW TO CLEAN THE AIR FILTER”.
(Refer to Fig. 3)
HOW TO CLEAN AIR OUTLET AND OUTSIDE PANELS
6. Fix the suction grille.
Refer to item No. 2.
• Clean with soft cloth.
• When it is difficult to remove stains, use water or
neutral detergent.
7. Shut the suction grille.
Refer to item No. 1.
NOTE
• Do not use gasoline, benzene, thinner, polishing
powder, liquid insecticide. It may cause discoloring or warping.
• Do not let the indoor unit get wet. It may cause an
electric shock or a fire.
• Do not use water or air of 50°C or higher for
cleaning air filters and outside panels.
Confirm the following
• Check that the air inlet and outlet are not
blocked. Remove any obstacle.
• Check if the earth is connected.
Might there be a broken wire somewhere?
Contact your dealer if there are any problems.
HOW TO CLEAN THE SUCTION GRILLE
Turn on the main power supply switch
• The display on the remote control will be shown
when the power is turned on.
• To protect the unit, turn on the main power switch
at least 6 hours before operation.
1. Open the suction grille.
Push it downward slowly while pressing horizontally the buttons provided on two spots. (Follow
the same procedure for closing.)
Fig. 4
START UP AFTER A LONG STOP
Clean the air filter and outside panels
• After cleaning the air filter, make sure to attach it.
WHAT TO DO WHEN STOPPING THE
SYSTEM FOR A LONG PERIOD
Turn on FAN OPERATION for a half day and dry
the unit.
• Refer to “6.OPERATION PROCEDURE”.
2. Detach the suction grille.
Open the suction grille 45 degrees and lift it
upward.
Fig. 5
Cut off the power supply.
• When the main power switch is turned on, some
watts of electricity is being used even if the
system is not operating.
Turn off the main power supply switch for saving
energy.
• The display on the remote control will vanish
when the main power switch is turned off.
Clean the air filter and the exterior.
• Be sure to replace the air filter to its original
place after cleaning. Refer to “MAINTENANCE”.
9. NOT MALFUNCTION OF THE
AIR CONDITIONER
3. Detach the air filter.
Refer to “HOW TO CLEAN THE AIR FILTER”.
(Refer to Fig. 2)
4. Clean the suction grille.
Wash with a soft bristle brush and
neutral detergent or water, and dry
throughly.
When very grimy
224
The following symptoms do not indicate air conditioner malfunction
I. THE SYSTEM DOES NOT OPERATE
• The system does not restart immediately after
the ON/OFF button is pressed.
If the OPERATION lamp lights, the system is in
normal condition.
It does not restart immediately because a safety
device operates to prevent overload of the sys-
System Configuration
SiEBE18-526
tem. After 3 minutes, the system will turn on
again automatically.
• The system does not restart immediately
when TEMPERATURE SETTING button is
returned to the former position after pushing
the button.
If the OPERATION lamp lights, the system is in
normal condition.
It does not restart immediately because a safety
device operates to prevent overload of the
system. After 3 minutes, the system will turn on
again automatically.
• The system does not start when the display
shows “
” (UNDER CENTRALIZED
CONTROL) and it flashes for few seconds
after pressing an operation button.
This is because the system is under centralized
control. Flashes on the display indicates that the
system cannot be controlled by the remote
control.
• The system does not start immediately after
the power supply is turned on.
Wait one minute until the micro computer is
prepared for operation.
• The outdoor unit is stopped
This is because the room temprerature has
reached the set temprerature. The indoor unit
switches to fan operation.
II. The display shows “
” (UNDER
CENTRALIZED CONTROL) and the unit
operates in a mode different to what is
shown on the remote control display.
When using a unit in a multi system, the
operation condition of that unit is controlled by
a micro computer as described below, according to the operation condition of other indoor
units connected to the system.
• If the operation mode does not match other
indoor units that are already running, the indoor
unit will assume the STANDBY state (the fan is
stopped and the air flow flap is positioned
horizontally).
If HEATING mode is set together with COOLING, DRY or FAN mode, the above mentioned
condition will occur.
NOTE
• Normally, the operation mode in the room where
the unit is first run is given priority, but the
following situations are exceptions, so please
keep this in mind.
a. If the operation mode of the first room is FAN
Mode, then using Heating Mode in any room
after this will give priority to heating. In this
situation, the air conditioner running in FAN
Mode will go on standby.
b. With the Priority Room Setting active.
Contact your Daikin dealer for the operation
that corresponds to your system.
• If the total capacity of operating indoor units
exceeds the limit, the indoor unit will assume the
STANDBY state (FAN and AIR FLOW DIREC-
System Configuration
Instruction
TION will be left as set). (This only applies to
cooling only type.)
• If another indoor unit commences a HEATING
operation after this indoor unit is running in
COOLING mode, this indoor unit may switch to
DRY operation (fan on low, air flow flap set at
horizontal).
III. The fan speed is different from the setting.
• Pressing the fan speed control button does
not change the fan speed.
When the room temperature reaches the set
temperature in heating mode, the power supply
from the outdoor unit is stopped and the indoor
unit will operate on the low fan setting. (If using
the multi system, the fan will alternate between
off and low.)
This is to prevent the cool air from being blown
directly onto anyone in the room.
IV. AIR BLOW DIRECTION IS NOT AS SPECIFIED.
• Actual air blow direction is not as shown on
the remote contoller.
• Automatic swing setting does not work.
Refer to “AIR FLOW DIRECTION ADJUST.”
V. WHITE MIST COMES OUT OF A UNIT
• When humidity is high during cooling operation (In oily or dusty places)
If the inside of an indoor unit is extremely
contaminated, the temperature distribution inside
a room becomes uneven. It is necessary to clean
the inside of the indoor unit. Ask your Daikin
dealer for details on cleaning the unit. This
operation requires a qualified service person.
• When the system is changed over to HEATING OPERATION after DEFROST OPERATION.
Moisture generated by DEFROST becomes
steam and exists.
VI. NOISE OF AIR CONDITIONERS
A ringing sound after the unit is started.
This sound is generated by the temperature
regulator working.
It will quiet down after about a minute.
• A continuous flow “Shuh” sound is heard
when the systems is in COOLING or
DEFROST OPERATION.
This is the sound of refrigerant gas flowing
through both indoor and outdoor units.
• A “Shuh” sound which is heard at the start or
immediately after the stop of operation or
which is heard at the start or immediately
after the stop of DEFROST OPERATION.
This is the noise of refrigerant caused by flow
stop and flow change.
• A continuous flowing sound "Shah"or a
trickling sound "Jyuru Jyuru"are heard when
the system is in COOLING OPERATION or at a
stop.
The noise is heard when the drain pump is in
operation.
225
Instruction
SiEBE18-526
• A “Pishi-pishi” squeaking sound is heard when
the system is in operation or after the stop of
operation.
Expansion and contraction of plastic parts caused
by temperature change makes this noise.
VII. DUST FROM THE UNITS
• Dust may blow out from the unit after starting
operation from long resting time.
Dust absorbed by the unit blows out.
VIII. THE UNITS GIVE OFF ODORS
The unit absorbs the smell of rooms, furniture,
cigarettes, etc., and then emits them.
IX. THE LIQUID CRYSTAL OF THE REMOTE
CONTROL SHOW “
”
• It happens immediately after the main power
supply switch is turned on.
This shows that the remote control is in normal
condition.
This continues temporary.
10. TROUBLE SHOOTING
I. If one of the following malfunctions occurs,
take the measures shown below and contact
your Daikin dealer.
The system must be repaired by a qualified service
person.
WARNING
When the air conditioner is in abnormal
conditions (smell of something burning,
etc), unplug the power cord from the outlet,
and contact your dealer
Continued operation under such circumstances
may result in a failure, electric shock, and fire.
• If a safety device such as a fuse, a breaker, or an
earth leakage breaker frequently actuates, or
ON/OFF switch does not properly work.
Measure: Turn off the main power switch
• If water leaks from unit.
Measure: Stop the operation.
• If the display “
” (INSPECTION), “UNIT No.”,
and the OPERATION lamp flash and the “MALFUNCTION CODE” appears.
OPERATION lamp
Measure: Notify and inform the model name and
what the malfunction code indicates to your
Daikin dealer.
II. If the system does not properly operate
except for the above mentioned case, and
none of the above mentioned malfunctions
is evident, investigate the system according
to the following procedures.
1. If the system does not operate at all.
• Check if there is a power failure.
Wait until power is restored. If power failure
occurs during operation, the system automatically
restarts immediately after the power supply
recovers.
• Check if the fuse has blown or breaker has
worked.
Change the fuse or set the breaker.
2. If the system stops operating after operating
the system.
• Check if the air inlet or outlet of outdoor or indoor
unit is blocked by obstacles.
Remove the obstacle and make it well-ventilated.
• Check if the air filter is clogged.
Ask a qualified service person to clean the air
filters (Refer to MAINTENANCE).
3. The system operates but it does not sufficiently cool or heat.
• If the air inlet or outlet of the indoor or the outdoor
unit is blocked with obstacles.
Remove the obstacle and make it well-ventilated.
• If the air filter is clogged.
Ask a qualified service person to clean the air
filters (Refer to MAINTENANCE).
• If the set temperature is not proper (Refer to
ADJUSTMENT).
• If the FAN SPEED button is set to LOW SPEED
(Refer to ADJUSTMENT).
• If the air flow angle is not proper (Refer to AIR
FLOW DIRECTION ADJUST).
• If the doors or the windows are open.
Shut doors or windows to prevent wind from
coming in.
• If direct sunlight enters the room (when cooling).
Use curtains or blinds.
• When there are too many inhabitants in the room
(when cooling).
Cooling effect decreases if heat gain of the room
is too large.
• If the heat source of the room is excessive (when
cooling).
Cooling effect decreases if heat gain of the room
is too large.
UNIT No.
C
INSPECTION
display
L H
INDOOR UNIT No. in which
a malfunction occurs
MALFUNCTION CODE
3P083810-4M
226
System Configuration
Instruction
SiEBE18-526
2.4
Ceiling Suspended Type
5 12
4
2
1
3
7
hr
C
hr
6
8
NOT
AVAILABLE
TEST
9
11
10
L H
14
21
20
TEST
19
16
15
17
18
22
1
f
e
a
e
k
i
3
g
h
d
d
j
b
d
c
e
f
hr
C
H
k
2
4
[1]
System Configuration
227
Instruction
• The precautions described below are WARNING and CAUTION. These are very important
precautions concerning safety. Be sure to
observe all of them without fail.
WARNING ..These are the matters with possibilities leading to serious consequences such as death or serious
injury due to erroneous handling.
CAUTION....These are the matters with possibilities leading to injury or material
damage due to erroneous handling including probabilities leading
to serious consequences in some
cases.
• After reading, keep this manual at a place
where any user can read at any time. Furthermore, make certain that this operation manual
is handed to a new user when he takes over
the operation.
WARNING
Avoid exposure of your body directly to the
cold air for a long time, or avoid excessive
exposure of your body to the cold air.
Otherwise, your physical condition may be
deteriorated and/or your health may be ruined.
When the air conditioner is in abnormal
conditions (smell of something burning, etc),
unplug the power cord from the outlet, and
contact the dealer where you purchased the
air conditioner.
Continued operation under such circumstances
may result in a failure, electric shock, and fire.
Ask your dealer for installation of the air
conditioner.
Incomplete installation performed by yourself may result
in a failure, a water leakage, electric shock, and fire.
Ask your dealer for improvement, repair, and
maintenance.
Incomplete improvement, repair, and maintenance may
result in a failure, a water leakage, electric shock, and fire.
Do not insert your finger, a stick, etc., into the
air inlet, outlet, and fan blades.
A fan in high-speed running may result in injury.
For refrigerant leakage, consult your dealer.
When the air conditioner is to be installed in a
small room, it is necessary to take proper
mea-sures so that the amount of any leaked
refrigerant does not exceed the limiting concentration even when it leaks. If the refrigerant leaks
exceeding the level of limiting concentration, an
oxygen deficiency accident may happen.
For installation of separately sold component
parts, ask a specialist.
Be sure to use the separately sold component
parts designated by our company.
Incomplete installation performed by yourself may
result in a failure, a water leakage, electric shock,
and fire.
228
SiEBE18-526
Ask your dealer to move and reinstall the air
conditioner.
Incomplete installation may result in a failure, a
water leakage, electric shock, and fire.
Do not use any fuse with improper capacity.
The use of a piece of wire and whatnot may
result in a failure and fire.
The refrigerant in the air conditioner is safe and
normally does not leak. If the refrigerant leaks
inside the room, the contact with a fire of a burner,
a heater or a cooker may result in a harmful gas.
Do not use the air conditioner until when a
service person confirms to finish repairing the
portion where the refrigerant leaks.
CAUTION
Do not use the air conditioner for other purposes.
Do not use the air conditioner for a special
application such as the storage of foods, animals
and plants, precision machines, and art objects as
otherwise the deterioration of quality may result.
Do not remove the air outlet of the outdoor unit.
The fan may get exposed and result in injury.
When the air conditioner is used in combination with
burners or heaters, perform sufficient ventilation.
Insufficient ventilation may result in an oxygen
deficiency accident.
Check and make sure that foundation blocks
are not damaged after a long use.
If they are left in a damaged condition, the unit
may fall and result in injury.
Neither place a flammable spray bottle near
the air conditioner nor perform spraying.
Doing so may result in a fire.
To clean the air conditioner, stop operation,
and unplug the power cord from the outlet.
Otherwise, an electric shock and injury may result.
Do not operate the air conditioner with a wet hand.
An electric shock may result.
Do not place items that might be damaged by
water under the indoor unit.
Water may condensate and drip if the humidity
reaches 80% or if the drain exit gets clogged.
Do not place a burner or heater at a place directly
exposed to the wind from the air conditioner.
Incomplete combustion of the burner or heater
may result.
Do not allow a child to mount on the outdoor
unit or avoid placing any object on it.
Falling or tumbling may result in injury.
Do not expose animals and plants directly to
the wind from the air conditioner.
Adverse influence to animals and plants may result.
Do not wash the air conditioner with water.
Electric shock or fire may result.
Do not install the air conditioner at any place
where flammable gas may leak out.
If the gas leaks out and stays around the air
conditioner, a fire may break out.
Be sure to install an earth leakage breaker.
Unless it is installed, an electric shock or fire may result.
System Configuration
Instruction
SiEBE18-526
Be sure the air conditioner is electrically grounded.
Do not connect the grounding conductor to a gas pipe,
water pipe, lightning arrester, and the grounding
conductor for a telephone.
Imperfect grounding work may result in an electric shock.
Execute complete drain piping for perfect
drainage.
Incomplete piping may result in a water leakage.
The appliance is not intended for use by
young children or infirm persons without
supervision.
Young children should be supervised to ensure
that they do not play with the appliance.
3. OPERATION RANGE
If the temperature or the humidity is beyond the following
conditions, safety devices may work and the air conditioner
may notoperate, or sometimes, water may drop from the
indoor unit.
COOLING
OUTDOOR UNIT
R35 · 45 · 60
RY35 · 45 · 60
R71 · 100 · 125
RP71 · 100 · 125
REP71 · 100 · 125
INDOOR
TEMPERA- HUMIDTURE
ITY
DB
WB
DB
WB
18 to 33 80% or
12 to 24 below
18 to 33 80% or
12 to 24 below
DB 21 to 35 80% or
WB 14 to 25 below
OUTDOOR
TEMPERATURE
DB – 15 to 46
HEATING
OUTDOOR UNIT
INDOOR
TEMPERATURE
RY35 · 45 · 60
DB
15 to 27
RY71 · 100 · 125
RYP71 · 100 · 125
RYEP71 · 100 · 125
DB
15 to 27
RZP71 · 100 · 125
DB
15 to 27
RQ71 · 100 · 125
DB
10 to 27
RZQ71 · 100 · 125 ·
140
DB
10 to 27
RXS35 · 50 · 60
DB
10 to 30
3MXS52 · 2MXS52
4MXS68 · 80
DB
10 to 30
RMXS112 · 140 · 160 DB
10 to 30
OUTDOOR
TEMPERATURE
DB – 9 to 21
WB – 10 to 15.5
DB – 9 to 21
WB
– 10 to 15.5
DB
WB
DB
WB
DB
WB
DB
WB
DB
WB
DB
WB
– 14 to 21
– 15 to 15.5
– 9 to 21
– 10 to 15
– 19.5 to 21
– 20 to 15.5
– 14 to 24
– 15 to 18
– 14 to 21
– 15 to 15.5
– 14 to 21
– 15 to 15.5
D B: Dry bulb temperature (°C)
WB: Wet bulb temperature (°C)
The setting temperature range of the remote
control is 16°C to 32°C.
DB – 5 to 46
4. INSTALLATION SITE
DB – 15 to 46
Regarding places for installation
80% or
below
DB – 5 to 46
• Is the air conditioner installed at a wellventIlated place where there are no obstacles
around?
80% or
below
DB – 5 to 50
80% or
below
DB – 5 to 46
80% or
below
DB – 15 to 46
80% or
below
DB – 15 to 50
80% or
below
DB – 10 to 46
3MKS50
DB 21 to 32
4MKS58 · 75 · 90
80% or
3MXS52 · 2MXS52
below
WB 14 to 23
4MXS68 · 80
DB – 10 to 46
RMKS112 · 140 · 160 DB 21 to 32 80% or
RMXS112 · 140 · 160
WB 14 to 23 below
DB – 5 to 46
RY71 · 100 · 125
DB 18 to 35
RYP71 · 100 · 125
RYEP71 · 100 · 125 WB 12 to 25
DB 21 to 35
RZP71 · 100 · 125
WB 14 to 25
DB 18 to 37
RQ71 · 100 · 125
WB 12 to 28
DB 18 to 37
RR71 · 100 · 125
WB 12 to 28
RZQ71 · 100 · 125 · DB 18 to 37
140
WB 12 to 28
RS50 · 60
DB 21 to 32
RKS35 · 50 · 60
RXS35 · 50 · 60
WB 14 to 23
System Configuration
• Do not use the air conditioner in the following
places.
a. Filled with much mineral oil such as cutting oil
b. Where there is much salt such as a beach
area
c. Where sulfured gas exists such as a hotspring resort
d. Where there are considerable voltage fluctuations such as a factory or plant
e. Vehicles and vessels
f. Where there is much spray of oil and vapor
such as a cookery, etc.
g. Where there are machines generating electromagnetic waves
h. Filled with acid and/or alkaline steam or vapor
• Is a snow protection measure taken?
For details, consult your dealer.
Regarding wiring
• All wiring must be performed by an authorized electrician.
To do wiring, ask your dealer. Never do it by yourself.
229
Instruction
SiEBE18-526
• Make sure that a separate power supply
circuit is provided for this air conditioner
and that all electrical work is carried out by
qualified personnel according to local laws
and regulations.
DISPLAY “ ” “ ” “
(OPERATION MODE)
• Are you sure that there are no obstacles
near the air outlet of the outdoor unit?
Such obstacles may result in declined
performance and increased running noises.
”
6
TEST” (INSPECTION/TEST
DISPLAY “
OPERATION)
When the INSPECTION/TEST OPERATION
BUTTON is pressed, the display shows the
system mode is in.
hr
DISPLAY “
” (PROGRAMMED TIME)
hr
7
This display shows the PROGRAMMED
TIME of the system start or stop.
8
• If abnormal noises occur in use, stop the
operation of the air conditioner, and then
consult your dealer or our service station.
DISPLAY “
” (SET TEMPERATURE)
This display shows the set temperature.
9
DISPLAY “
” (FAN SPEED)
This display shows the set fan speed.
Regarding drainage of drain piping
10
• Is the drain piping executed to perform
complete drainage?
If proper drainage is not carried out from the
outdoor drain pipes during air-conditioning
operation, chances are that dust and dirt are
clogged in the pipe. This may result in a water
leakage from the indoor unit. Under such
circumstances, stop the operation of the air
conditioner, and then consult your dealer or our
service station.
5. NAME AND FUNCTION OF EACH
SWITCH AND DISPLAY ON THE
REMOTE CONTROLLER
Refer to figure 1 on page [1]
ON/OFF BUTTON
1 Press the button and the system will start.
Press the button again and the system will
stop.
OPERATION LAMP (RED)
2
The lamp lights up during operation.
DISPLAY “
” (UNDER CENTRALIZED CONTROL)
3
When this display shows, the system is
UNDER CENTRALIZED CONTROL.
DISPLAY “
” “
”“
”“
”
(VENTILATION/AIR CLEANING)
4 This display shows that the total heat
exchange and the air cleaning unit are in
operation (These are optional accessories).
230
”“
5 This display shows the current OPERATION
MODE. For cooling only type, “ ” (Auto)
and “ ” (Heating) are not installed.
Pay attention to running noises, too
• Are the following places selected?
a. A place that can sufficiently withstand the
weight of the air conditioner with less running
noises and vibrations.
b. A place where the hot wind discharged from
the air outlet of the outdoor unit and the
running noises.
”“
C
DISPLAY “
” (AIR FLOW FLAP)
Refer to “AIR FLOW DIRECTION ADJUST”.
DISPLAY “
” (TIME TO CLEAN AIR
11 FILTER)
Refer to “HOW TO CLEAN THE AIR FILTER”.
DISPLAY “
” (DEFROST)
Refer to “DEFROST OPERATION”.
NON-FUNCTIONING DISPLAY
If that particular function is not available,
pressing the button may display the words
“NOT AVAILABLE” for a few seconds.
13 When running multiple units simultaneously
The “NOT AVAILABLE” message will only be
appear if none of the indoor units is equipped
with the function. If even one unit is equipped
with the function, the display will not appear.
TIMER MODE START/STOP BUTTON
14
Refer to “PROGRAM TIMER OPERATION”.
TIMER ON/OFF BUTTON
15
Refer to “PROGRAM TIMER OPERATION”.
12
INSPECTION/TEST OPERATION BUTTON
16 This button is used only by qualified service
persons for maintenance purposes.
PROGRAMMING TIME BUTTON
17 Use this button for programming “START and/
or STOP” time.
TEMPERATURE SETTING BUTTON
18 Use this button for SETTING TEMPERATURE.
19
FILTER SIGN RESET BUTTON
Refer to HOW TO CLEAN THE AIR FILTER.
System Configuration
Instruction
SiEBE18-526
FAN SPEED CONTROL BUTTON
20 Press this button to select the fan speed,
HIGH or LOW, of your choice.
OPERATION MODE SELECTOR BUTTON
21 Press this button to select OPERATION
MODE.
22
Refer to figure 3 on page [1]
• For cooling only type, “COOLING” , “FAN” and
“DRY” operation are able to select.
2
ON/OFF
AIR FLOW DIRECTION ADJUST BUTTON
Press ON/OFF BUTTON
Refer to “AIR FLOW DIRECTION ADJUST ”.
OPERATION lamp lights up or goes off and the
system starts or stops OPERATION.
NOTE
• For the sake of explanation, all indications are
shown on the display in Figure 1 contrary to
actual running situations.
6. OPERATION PROCEDURE
Refer to figure 1 on page [1]
• Operating procedure varies with heat pump type
and cooling only type. Contact your Daikin dealer
to confirm your system type.
• To protect the unit, turn on the main power switch
6 hours before operation.
• If the main power supply is turned off during
operation, operation will restart automatically
after the power turns back on again.
COOLING, HEATING, AUTOMATIC, FAN,
AND PROGRAM DRY OPERATION
Operate in the following order.
1
OPERATION MODE SELECTOR
Press OPERATION MODE SELECTOR
button several times and select the OPERATION MODE of your choice as follows.
COOLING OPERATION ......................“
HEATING OPERATION .......................“
AUTOMATIC OPERATION ..................“
[EXPLANATION OF HEATING OPERATION]
DEFROST OPERATION
• As the frost on the coil of an outdoor unit increase,
heating effect decreases and the system goes into
DEFROST OPERATION.
• The indoor unit fan stops and the remote control
display shows “
”.
• After 6 to 8 minutes (maximum 10 minutes) of
DEFROST OPERATION, the system returns to
HEATING OPERATION.
Regarding outside air temperature and
heating capacity
• The heating capacity of the air conditioner
declines as the outside air temperature falls. In
such a case, use the air conditioner in combination with other heating systems.
• A warm air circulating system is employed, and
therefore it takes some time until the entire room
is warmed up after the start of operation.
• An indoor fan runs to discharge a gentle wind
automatically until the temperature inside the air
conditioner reaches a certain level. At this time,
the remote control displays “
”. Leave it as it
stands and wait for a while.
• When the warm air stays under the ceiling and
your feet are cold, we recommend that you use a
circulator (a fan to circulate the air inside the
room). For details, consult your dealer.
”
”
”
• In this operation mode, COOL/HEAT changeover is automatically conducted.
FAN OPERATION ................................“
”
DRY OPERATION ...............................“
”
• The function of this program is to decrease the
humidity in your room with the minimum
temperature decrease.
• Micro computer automatically determines
TEMPERATURE and FAN SPEED.
• This system does not go into operation if the
room temperature is below 16°C.
System Configuration
231
Instruction
SiEBE18-526
ADJUSTMENT
For programming TEMPERATURE, FAN SPEED
and AIR FLOW DIRECTION, follow the procedure
shown below.
Press the AIR FLOW DIRECTION ADJUST
button to select the air direction as following.
The AIR FLOW FLAP display
swings as shown the left and
the air flow direction continuously varies. (Automatic swing
setting)
TEMPERATURE SETTING
Press TEMPERATURE SETTING button and
program the setting temperature.
Press AIR FLOW DIRECTION
ADJUST button to select the air
direction of your choice.
Each time this button is pressed, setting
temperature rises 1°C.
The AIR FLOW FLAP display
stops swinging and the air flow
direction is fixed (Fixed air flow
direction setting).
Each time this button is pressed, setting
temperature lowers 1°C.
• The setting is impossible for fan operation.
NOTE
• The setting temperature range of the remote
control is 16°C to 32°C.
FAN SPEED CONTROL
Press FAN SPEED CONTROL button.
High or Low fan speed can be selected.
The micro computer may sometimes control the fan
speed in order to protect the unit.
AIR FLOW DIRECTION ADJUST
MOVEMENT OF THE AIR FLOW FLAP
For the following conditions, micro computer
controls the air flow direction so it may be different
from the display.
Operation
mode
Cooling
Heating
• When room
• When room
temperature is
temperature is
higher than the
lower than the
set temperature
set temperature
Operation
• At defrost
condition
operation
• When operating continuously at
downward air flow direction
• There are 2 ways of adjusting the air discharge
angle.
1. A. Up and down adjustment
2. B. Left and right direction
B. LEFT AND RIGHT DIRECTION
Fig. 1
• Adjusting air flow direction in the left and right
direction. (Refer to Fig. 1)
A. Up and down
direction
Operation mode includes automatic operation.
NOTE
• Only make adjustments after you have stopped
the air flow direction swing in a position where
adjustments are possible. Your hand may get
caught if you attempt to make adjustments while
the unit is swinging.
B. Left and right direction
A. UP AND DOWN DIRECTION
• The movable limit of the flap is changeable.
Contact your Daikin dealer for details.
232
System Configuration
Instruction
SiEBE18-526
• Press the TIMER ON/OFF BUTTON once again
to cancel programming. The display vanishes.
PROGRAM TIMER OPERATION
Operate in the following order.
• The timer is operated in the following two ways.
• Programming the stop time (
)
.... The system stops
operating after the set time has elapsed.
• Programming the start time (
)
.... The system starts
operating after the set time has elapsed.
• The timer can be programmed a maximum of 72
hours.
• The start and the stop time can be simultaneously
programmed.
TIMER MODE START/STOP
1
Press the TIMER MODE START/STOP button
several times and select the mode on the
display.
The display flashes.
For setting the timer stop ....... “
For setting the timer start ...... “
”
”
PROGRAMMING TIME
2
Press the PROGRAMMING TIME button and
set the time for stopping or starting the
system.
When this button is pressed, the time
advances by 1 hour.
When this button is pressed, the time
goes backward by 1 hour.
TIMER ON/OFF
3
Press the TIMER ON/OFF BUTTON.
7. OPTIMUM OPERATION
Observe the following precautions to ensure the
system operates.
• Adjust the room temperature properly for a
comfortable environment. Avoid excessive
heating or cooling.
• Prevent direct sunlight from entering a room
during cooling operation by using curtains or
blinds.
• Ventilate the room regularly.Using the unit for
long periods of time requires attentive ventilation
of the room.
• Keep doors and windows closed. If the doors and
windows remain open, room air will flow out and
cause to decrease the effect of cooling and
heating.
• Do not place other heaters directly below the
indoor unit.
They may deform due to the heat.
• Never place objects near the air inlet and the air
outlet of the unit. It may cause deterioration in the
effect or stop in the operation.
• Turn off the main power supply switch when it is
not used for long periods of time. When the main
power switch is turned on, some watts of electricity is being used even if the system is not
operating. Turn off the main power supply switch
for saving energy. When reoperating, turn on the
main power supply switch 6hours before operation for smooth running (Refer to MAINTENANCE).
• When the display shows “
” (TIME TO
CLEAN AIR FILTER), ask a qualified service
person to clean the filters (Refer to MAINTENANCE).
The timer setting procedure ends.
The display “
or
” changes from
flashing light to a constant light.
Refer to figure 4 on page [1]
NOTE
• When setting the timer Off and On at the same
time, repeat the above procedure from 1 to 3
once again.
When the timer is programmed to stop the system
after 3 hours and start the system after 4 hours, the
system will stop after 3 hours and then 1 hour later
the system will start.
• After the timer is programmed, the display shows
the remaining time.
System Configuration
233
Instruction
SiEBE18-526
8. MAINTENANCE
(FOR SERVICE PERSONNEL)
ONLY A QUALIFIED SERVICE PERSON IS
ALLOWED TO PERFORM MAINTENANCE
IMPORTANT!
• BEFORE OBTAINING ACCESS TO TERMINAL
DEVICES, ALL POWER SUPPLY CIRCUITS
MUST BE INTERRUPTED
• To clean the air conditioner, be sure to stop
operation, and turn the power switch off. Otherwise, an electric shock and injury may result.
• Do not wash the air conditioner with water
Doing so may result in an electric shock.
• Be careful with a scaffold or staging
Caution must be exercised because of work at a
high place.
Fig. 2
knob
1. Open the suction grille.
Slide both knobs simultaneously as shown and
then pull them downward.
(Do the same procedure for closing.)
(Refer to Fig. 2)
2. Remove the air filters.
Push the 2 tabs up, and slowly lower the grille.
(Refer to Fig. 3)
3. Clean the air filter.
Use vacuum cleaner A) or wash the air filter with
water B).
A) Using a vacuum cleaner
Remove water and dry in the shade.
tab
Fig. 4
clip
234
Clean the air filter when the display shows “
”
(TIME TO CLEAN AIR FILTER).
It will display that it will operate for a set amount of
time.
Increase the frequency of cleaning if the unit is
installed in a room where the air is extremely
contaminated.
If the dirt becomes impossible to clean, change the
air filter (Air filter for exchange is optional).
B) Washing with water
When the air filter is very dirty, use soft brush
and neutral detergent.
Fig. 3
Fig. 5
HOW TO CLEAN THE AIR FILTER
NOTE
• Do not wash the air conditioner with hot water of
more than 50°C, as doing so may result in discoloration and/or deformation.
• Do not expose it to fire, as doing so may result in
burning.
4. Fix the air filter.
Set the hatch of the air filter to the fook of the
suction grille, and fix the air filter.
(Refer to Fig. 5)
5. Close the suction grille.
Refer to item No. 1.
6. After turning on the power, press FILTER
SIGN RESET BUTTON.
The “TIME TO CLEAN AIR FILTER” display
vanishes.
System Configuration
Instruction
SiEBE18-526
HOW TO CLEAN AIR OUTLET AND OUTSIDE PANELS
• Clean with soft cloth.
• When it is difficult to remove stains, use water or
neutral detergent.
NOTE
• Do not use gasoline, benzene, thinner, polishing
powder, liquid insecticide. It may cause discoloring
or warping.
• Do not let the indoor unit get wet. It may cause an
electric shock or a fire.
• Do not use water or air of 50°C or higher for
cleaning air filters and outside panels.
HOW TO CLEAN THE SUCTION GRILLE
1. Open the suction grille.
Slide both knobs and then pull them downward.
(Do the same procedure for closing.)
2. Remove the air filter.
Refer to “HOW TO CLEAN THE AIR FILTER”.
(Refer to Fig. 3)
3. Remove the suction grille.
Open the suction grille and pull the clips on the
back of the suction grille forward.
(Refer to Fig. 4)
4. Clean the suction grille.
Wash with a soft bristle
brush and neutral detergent or water, and dry
throughly.
• When very grimy
Directly apply the type of detergent used for
cleaning ventilation fans or ovens, wait 10
minutes, and then rinse with water.
NOTE
• Do not wash the air conditioner with hot water of
more than 50°C, as doing so may result in
discol-oration and/or deformation.
5. Fix the air filter.
Refer to “HOW TO CLEAN THE AIR FILTER”.
6. Fix the suction grille.
Refer to item No. 3.
7. Close the suction grille.
Refer to item No. 1.
START UP AFTER A LONG STOP
Confirm the following
• Check that the air inlet and outlet are not blocked.
Remove any obstacle.
• Check if the earth is connected.
Might there be a broken wire somewhere?
Contact your dealer if there are any problems
Clean the air filter and outside panels
• After cleaning the air filter, make sure to attach it.
System Configuration
Turn on the main power supply switch
• The display on the remote control will be shown
when the power is turned on.
• To protect the unit, turn on the main power switch
at least 6 hours before operation.
WHAT TO DO WHEN STOPPING THE
SYSTEM FOR A LONG PERIOD
Turn on FAN OPERATION for a half day and
drythe unit.
• Refer to “6. OPERATION PROCEDURE”.
Cut off the power supply.
• When the main power switch is turned on, some
watts of electricity is being used even if the
system is not operating.
Turn off the main power supply switch for saving
energy.
• The display on the remote control will vanish
when the main power switch is turned off.
Clean the air filter and the exterior.
• Be sure to replace the air filter to its original place
after cleaning. Refer to “MAINTENANCE”.
9. NOT MALFUNCTION OF THE AIR
CONDITIONER
The following symptoms do not indicate air conditioner malfunction
I. THE SYSTEM DOES NOT OPERATE
• The system does not restart immediately after
the ON/OFF BUTTON is pressed.
If the OPERATION lamp lights, the system is in
normal condition.
It does not restart immediately because a safety
device operates to prevent overload of the
system. After 3 minutes, the system will turn on
again automatically.
• The system does not restart immediately
when TEMPERATURE SETTING button is
returned to the former position after pushing
the button.
If the OPERATION lamp lights, the system is in
normal condition.
It does not restart immediately because a safety
device operates to prevent overload of the
system. After 3 minutes, the system will turn on
again automatically.
235
Instruction
• The system does not start when the display
shows “
” (UNDER CENTRALIZED
CONTROL) and it flashes for few seconds after
pressing an operation button.
This is because the system is under centralized
control. Flashes on the display indicates that the
system cannot be controlled by the remote control.
• The system does not start immediately after
the power supply is turned on.
Wait one minute until the micro computer is
prepared for operation.
• The outdoor unit is stopped
This is because the room temperature has
reached the set temperature. The indoor unit
switches to fan operation.
II. WHEN “
” (UNDER CENTRALIZED CONTROL)
IS DISPLAYED AND OPERATION IS DIFFERENT FROM
THE REMOTE CONTROL DISPLAY.
This is because operating mode is controlled by a
micro computer, as shown below, depending on
the operating mode of the other connected indoor
units when using in a multi system.
• If the operating mode does not match that of the
other indoor units which are already running,
the indoor unit goes into standby mode (the fan
stops and the air flow flaps become horizontal).
The unit will go into the above mode if either
cooling, dry, or fan operation mode are set
together with heating mode.
NOTE
• Normally, the operation mode in the room where
the unit is first run is given priority, but the following
situations are exceptions, so please keep this in
mind.
a If the operation mode of the first room is FAN
Mode, then using Heating Mode in any room
after this will give priority to heating. In this
situation, the air conditioner running in FAN
Mode will go on standby.
b With the Priority Room Setting active
Contact your Daikin dealer for the operation that
corresponds to your system.
• If the total capacity of all the indoor units
running exceeds the limit, the indoor unit will
go into standby mode (fan and air flow direction remain as set). (Only for cooling-only
type.)
• If another indoor unit goes into heating mode
after cooling, the unit may go into dry mode
(fan operates whisper and the air flow flaps
become horizontal).
SiEBE18-526
When the room temperature reaches the set
temperature in heating mode, the power supply
from the outdoor unit stops and the indoor unit
goes into whisper mode (in a multi system, the fan
goes back and forth between stop and whisper).
This is to prevent the cool air from being blown
directly onto anyone in the room.
IV. AIR BLOW DIRECTION IS NOT AS SPECIFIED.
• Actual air blow direction is not as shown on
the remote control.
• Automatic swing setting does not work.
Refer to “AIR FLOW DIRECTION ADJUST”.
V. WHITE MIST COMES OUT OF A UNIT
• When humidity is high during cooling operation (In oily or dusty places)
If the inside of an indoor unit is extremely
contaminated, the temperature distribution inside
a room becomes uneven. It is necessary to clean
the inside of the indoor unit. Ask your Daikin
dealer for details on cleaning the unit. This
operation requires a qualified service person.
• When the system is changed over to HEATING
OPERATION after DEFROST OPERATION.
Moisture generated by DEFROST becomes
steam and exists.
VI. NOISE OF AIR CONDITIONERS
• A ringing sound after the unit is started.
This sound is generated by the temperature
regulator working.
It will quiet down after about a minute.
• A continuous flow “Shuh” sound is heard
when the systems is in COOLING or
DEFROST OPERATION.
This is the sound of refrigerant gas flowing
through both indoor and outdoor units.
• A “Shuh” sound which is heard at the start or
immediately after the stop of operation or
which is heard at the start or immediately after
the stop of DEFROST OPERATION.
This is the noise of refrigerant caused by flow stop
and flow change.
• A continuous flow “Shah” sound is heard
when the system is in COOLING OPERATION
or at a stop.
The noise is heard when the drain pump is in operation.
• A “Pishi-pishi” squeaking sound is heard
when the system is in operation or after the
stop of operation.
Expansion and contraction of plastic parts caused
by temperature change makes this noise.
III. THE FAN SPEED IS DIFFERENT FROM THE
SETTING.
• Pressing the fan speed control button does not
change the fan speed.
236
System Configuration
Instruction
SiEBE18-526
VII. DUST FROM THE UNITS
• Dust may blow out from the unit after starting
operation from long resting time.
Dust absorbed by the unit blows out.
VIII. THE UNITS GIVE OFF ODORS
The unit absorbs the smell of rooms, furniture,
cigarettes, etc., and then emits them.
IX. THE LIQUID CRYSTAL OF THE REMOTE
CONTROL SHOW “
”
• It happens immediately after the main power
supply switch is turned on.
This shows that the remote control is in normal
condition.
This continues temporary.
10. TROUBLE SHOOTING
I. If one of the following malfunctions occurs,
take the measures shown below and contact
your Daikin dealer.
The system must be repaired by a qualified
service person.
WARNING
When the air conditioner is in abnormal
conditions (smell of something burning, etc),
unplug the power cord from the outlet, and
contact your dealer
Continued operation under such circumstances
may result in a failure, electric shock, and fire.
• If a safety device such as a fuse, a breaker, or
an earth leakage breaker frequently actuates, or
ON/OFF switch does not properly work.
Measure: Turn off the main power switch
• If water leaks from unit.
Measure: Stop the operation.
• If the display “
” (INSPECTION), “UNIT No.”,
and the OPERATION lamp flash and the
“MALFUNCTION CODE” appears.
OPERATION lamp
UNIT No.
C
INSPECTION
display
L H
INDOOR UNIT
No. in which a
malfunction occurs.
MALFUNCTION CODE
II. If the system does not properly operate
except for the above mentioned case, and
none of the above mentioned malfunctions is
evident, investigate the system according to
the following procedures.
1. If the system does not operate at all.
• Check if there is a power failure.
Wait until power is restored. If power failure
occurs during operation, the system automatically restarts immediately after the power
supply recovers.
• Check if the fuse has blown or breaker has
worked.
Change the fuse or set the breaker.
2. If the system stops operating after operating
the system.
• Check if the air inlet or outlet of outdoor or
indoor unit is blocked by obstacles.
Remove the obstacle and make it wellventilated.
• Check if the air filter is clogged.
Ask a qualified service person to clean the air
filters (Refer to MAINTENANCE).
3. The system operates but it does not sufficiently cool or heat.
• If the air inlet or outlet of the indoor or the
outdoor unit is blocked with obstacles.
Remove the obstacle and make it wellventilated.
• If the air filter is clogged.
Ask a qualified service person to clean the air
filters (Refer to MAINTENANCE).
• If the set temperature is not proper (Refer to
ADJUSTMENT).
• If the FAN SPEED button is set to LOW
SPEED (Refer to ADJUSTMENT).
• If the air flow angle is not proper (Refer to AIR
FLOW DIRECTION ADJUST).
• If the doors or the windows are open.
Shut doors or windows to prevent wind from
coming in.
• If direct sunlight enters the room (when
cooling).
Use curtains or blinds.
• When there are too many inhabitants in the
room (when cooling).
Cooling effect decreases if heat gain of the
room is too large.
• If the heat source of the room is excessive
(when cooling).
Cooling effect decreases if heat gain of the
room is too large.
Measure: Notify your Daikin dealer and inform
him/her of the display.
3PN05140-1T
System Configuration
237
Instruction
238
SiEBE18-526
System Configuration
SiEBE18-526
Part 8
Troubleshooting
1. Caution for Diagnosis..........................................................................241
1.1
1.2
1.3
1.4
Troubleshooting with the Operation Lamp (RA Indoor Unit) ................241
Troubleshooting with the LED on the SkyAir Indoor Unit .....................242
Troubleshooting with the LED on the Outdoor Unit..............................243
Troubleshooting with the LED on the BP Unit ......................................244
2. Service Check Function ......................................................................245
2.1
2.2
2.3
2.4
2.5
2.6
RA Indoor Unit Wireless Remote Controller.........................................245
SkyAir Indoor Unit INSPECTION/TEST Button....................................248
SkyAir Indoor Unit Wired Remote Controller........................................249
SkyAir Indoor Unit Wireless Remote Controller ...................................250
Sky Air Indoor Unit Error Codes and LED Indication............................252
Malfunction Code Indication by Outdoor Unit PCB ..............................253
3. List of Malfunction Code......................................................................255
4. Troubleshooting for RA Indoor Unit.....................................................257
4.1
4.2
4.3
4.4
4.5
4.6
Indoor Unit PCB Abnormality ...............................................................257
Freeze-up Protection Control or High Pressure Control.......................258
Fan Motor or Related Abnormality .......................................................260
Thermistor or Related Abnormality (Indoor Unit)..................................263
Shutter Drive Motor / Shutter Limit Switch Abnormality .......................264
Check ...................................................................................................265
5. Troubleshooting for SkyAir Indoor Unit ...............................................268
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
5.12
5.13
5.14
5.15
Indoor Unit PCB Abnormality ...............................................................268
Malfunction of Drain Water Level System (Float Type)........................269
Malfunction of Drain System ................................................................271
Indoor Unit Fan Motor Lock..................................................................272
Malfunction of Indoor Unit Fan Motor ...................................................273
Swing Flap Motor Malfunction / Lock ...................................................275
Malfunction of Capacity Setting............................................................277
Malfunction of Heat Exchanger Thermistor (R2T)................................278
Malfunction of Heat Exchanger Thermistor (R3T)................................279
Malfunction of Suction Air Thermistor ..................................................280
Malfunction of Remote Controller Thermistor.......................................281
Transmission Error (between Indoor Unit and Remote Controller) ......282
Transmission Error (between Main and Sub Remote Controller).........283
Malfunction of Field Setting Switch ......................................................284
Check ...................................................................................................285
6. Troubleshooting for BP Unit ................................................................287
6.1
6.2
6.3
6.4
6.5
6.6
Malfunction of Electronic Expansion Valve ..........................................287
Faulty BP Unit PCB ..............................................................................288
Faulty BP Liquid or Gas Pipe Thermistor .............................................289
Transmission Error between Indoor Unit and BP Unit..........................290
Transmission Error between Outdoor Unit and BP Unit.......................292
Check ...................................................................................................293
7. Troubleshooting for Outdoor Unit........................................................294
7.1 Faulty Outdoor Unit PCB......................................................................294
Troubleshooting
239
SiEBE18-526
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.18
7.19
7.20
7.21
7.22
7.23
7.24
7.25
7.26
7.27
7.28
Actuation of High Pressure Switch .......................................................295
Actuation of Low Pressure Switch........................................................296
Compressor Motor Lock .......................................................................297
Malfunction of Outdoor Unit Fan Motor ................................................298
Malfunction of Moving Part of Electronic Expansion Valve ..................299
Abnormal Discharge Pipe Temperature ...............................................300
Malfunction of Thermistor for Outdoor Air (R1T) ..................................301
Malfunction of Discharge Pipe Thermistor (R3T) .................................302
Malfunction of Thermistor (R2T) for Suction Pipe ................................303
Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger .....304
Malfunction of Receiver Gas Pipe Thermistor (R5T)............................305
Outdoor Unit: Malfunction of High Pressure Sensor ............................306
Malfunction of Low Pressure Sensor....................................................307
Malfunction of Inverter Radiating Fin Temperature Rise......................308
Inverter Compressor Abnormal ............................................................309
Inverter Current Abnormal....................................................................310
Inverter Start up Error...........................................................................311
Malfunction of Transmission between Inverter and Control PCB.........312
Malfunction of Inverter Radiating Fin Temperature Rise Sensor .........314
Faulty Combination of Inverter and Fan Driver ....................................315
Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion
Valve Failure ........................................................................................316
Power Supply Insufficient or Instantaneous Failure .............................317
Check Operation not Executed ............................................................319
Malfunction in other Indoor Unit or other BP Unit.................................320
Mismatching of Indoor Unit, BP Unit and Outdoor Unit ........................321
Refrigerant System not Set, Incompatible Wiring/Piping......................322
Malfunction of System, Refrigerant System Address Undefined..........323
8. Check ..................................................................................................324
9. Thermistor Resistance / Temperature Characteristics........................326
10.Pressure Sensor .................................................................................328
240
Troubleshooting
SiEBE18-526
Caution for Diagnosis
1. Caution for Diagnosis
1.1
Troubleshooting with the Operation Lamp (RA Indoor Unit)
The operation lamp blinks when any of the following errors is detected.
1. When a protection device of the indoor or outdoor unit is activated or when the thermistor
malfunctions, disabling equipment operation.
2. When a signal transmission error occurs between the indoor and outdoor units.
In either case, conduct the diagnostic procedure described in the following pages.
Location of
Operation Lamp
In case of
FTXS 20/25/35 D Series
CTXS50 D Series
In case of
FTXS 20/25/35 C Series
OPERATION lamp (green)
Indicator lamps
ON
OFF
ON/OFF
Operation lamp (green)
(R4298)
(R4297)
In case of
FTXS 50/60/71 B Series
In case of
FDXS 25/35 C Series
CDXS 50/60 C Series
OPERATION lamp (green)
Air outlet
Indicator lamps
Operation lamp (green)
TIMER lamp (yellow)
ON/OFF switch
HOME LEAVE lamp (red)
(R2837)
(Q0340)
In case of
FVXS 25/35/50 B Series
In case of
FLXS 25/35/50/60 B Series
OPERATION lamp (green)
ON
OFF
OPERATION lamp (green)
(Q0341)
(Q0342)
Troubleshooting
241
Caution for Diagnosis
Caution:
SiEBE18-526
Operation stops suddenly. (Operation lamp blinks.)
Cause of above trouble could be "Operation mode butting".
Check followings;
Are the operation modes all the same for indoor units connected to Multi system outdoor unit?
If not set all indoor units to the same operation mode and confirm that the operation lamp is not
blinking.
Moreover, when the operation mode is in "Auto", set all indoor unit operation mode to "Cool" or
"Heat" and check again if the operation lamp is normal.
If the lamp stops blinking after the above steps, there is no malfunction.
HOperation stops and operation lamp blinks only for indoor unit which the different operation
mode is set later. (The first set operation mode has priority.)
1.2
Troubleshooting with the LED on the SkyAir Indoor Unit
Foreword
Troubleshooting can be carried out by service monitor LED (green). (Blinks when normal)
4 : LED on 3 : LED off 5 : LED blinks — : No connection with troubleshooting
Microcomputer
Normal Monitor
Contents/Processing
HAP
5
4
3
Note:
242
Incorrect wiring between indoor and outdoor unit
If outdoor unit’s HAP is off, proceed outdoor unit’s trouble shooting. If outdoor
unit’s HAP blinks, failure of wiring or indoor or outdoor unit P.C board ass’y.
(Note 4)
Failure of indoor unit PC board ass’y (Note 5)
Malfunction of power supply or failure of PC board ass’y or broken
transmission wire between indoor and outdoor unit. (Note 5)
1. When the INSPECTION/TEST button of remote controller is pushed, INSPECTION display
blinks entering INSPECTION mode.
2. In the INSPECTION mode, when the ON/OFF button is pushed and held for 5 seconds or
more, the aforementioned malfunctioning history display is off. In this case, after the
malfunction code blinks 2 times, the code display turns to “00” (=Normal) and the unit No.
turns to “0”. The INSPECTION mode automatically switches to the normal mode (set
temperature display).
3. Operation halts due to malfunction depending on the model or condition.
4. The wiring between indoor and outdoor unit may be incorrect or disconnected. Before
performing the previously described troubleshooting, check the wiring. If the outdoor unit is
inverter unit, the outdoor unit fuse may be blown.
5. Troubleshoot by turning off the power supply for a minimum of 5 seconds, turning it back on,
and then rechecking the LED display.
Troubleshooting
SiEBE18-526
1.3
Caution for Diagnosis
Troubleshooting with the LED on the Outdoor Unit
There are green and orange LEDs on the PCB. The blinking green LED indicates normal
equipment condition, and the OFF condition of the orange LED indicates normal equipment
condition.
(Troubleshooting with the green LED)
The LED A (green) of the outdoor unit indicate microcomputer operation condition.
Even after the error is cancelled and the equipment operates in normal condition, the LED
indication remains.
LED7(H7P)
LED6(H6P)
LED5(H5P)
LED4(H4P)
LED3(H3P)
LED2(H2P)
LED1(H1P)
LED A(HAP)
(Q0384)
Troubleshooting
243
Caution for Diagnosis
1.4
SiEBE18-526
Troubleshooting with the LED on the BP Unit
LEDA(H1P)
LED1(H2P)
LED2(H3P)
LED3(H4P)
LED4(H5P)
(Q0395)
LED-B (green)
Intercommunication to
outdoor unit: normal
Diagnosis
Normal
Abnormality
Abnormality
Green
Red
Check inter-unit wiring
Check inter-unit wiring
Green
Red
Microcomputer:
Malfunction detection
normal
LED-1 LED-2 LED-3 LED-4
LED-A
Normally flashing
Normally off
On
Flash
Off
Irrelevant
Diagnosis
Normal
Check indoor or outdoor unit
Thermistor abnorrmality
High pressure protector worked, or freeze-up in operating unit or stand-by
Electronic expansion valve abnormality
[ Note 1 ]
Power supply fault or [ Note 2 ]
Notes
244
1. Turn the power off then on again,
if the LED display recurs, the branch
provider unit PCB is faulty.
2. Turn the power off and then on again,
if the LED display recurs, turn the
power off and disconnect line 2 of
inter-unit wiring for all units, then turn
the power on again.
< If LED-A is off: >
The branch provider unit PCB
is faulty.
< If LED-A is flashing: >
The indoor unit PCB is faulty.
Turn the reconnect line 2 of
all inter-unit wiring and check
the diagnosis by LEDS on
indoor unit PCB.
3P058760C
Troubleshooting
SiEBE18-526
Service Check Function
2. Service Check Function
2.1
RA Indoor Unit Wireless Remote Controller
In the ARC433A series remote controller, the temperature display sections on the main unit
indicate corresponding codes.
Check Method 1
1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the
temperature display section.
ECONO
POWERFUL
ON/OFF
TEMP
MODE
FAN
SWING
SILENT COMFORT SENSOR
ON
CANCEL
TIMER CANCEL button
It cancels the timer setting.
OFF
TIMER
<ARC433A50, 43>
(R4271)
2. Press the timer cancel button repeatedly until a continuous beep is produced.
„ The code indication changes in the sequence shown below, and notifies with a long beep.
No.
1
2
3
4
5
6
7
8
9
10
11
Code
00
U4
F3
E6
L5
A6
E5
F6
C9
U0
E7
No.
12
13
14
15
16
17
18
19
20
21
22
Code
C7
H8
J3
A3
A1
C4
C5
H9
J6
UA
A5
No.
23
24
25
26
27
28
29
30
31
32
33
Code
H0
E1
P4
L3
L4
H6
H7
U2
UH
EA
AH
No.
12
13
14
15
16
17
18
19
20
21
22
Code
F6
C7
A3
H8
H9
C9
C4
C5
J3
J6
E5
No.
23
24
25
26
27
28
29
30
31
32
33
Code
A1
E1
UA
UH
P4
L3
L4
H7
U2
EA
AH
<In case of ARC433A50, 43>
No.
1
2
3
4
5
6
7
8
9
10
11
Note:
Troubleshooting
Code
00
U4
L5
E6
H6
H0
A6
E7
U0
F3
A5
1. A short beep and two consecutive beeps indicate non-corresponding codes.
2. To cancel the code display, hold the timer cancel button down for 5 seconds. The code
display also cancels itself if the button is not pressed for 1 minute.
245
Service Check Function
SiEBE18-526
Check Method 2
1. Enter the diagnosis mode.
Press the 3 buttons (TEMPs,TEMPt, MODE) simultaneously.
(R4272)
The digit of the number of tens blinks.
HTry again from the start when the digit does not blink.
(R4273)
2. Press the TEMP button.
Press TEMPs or TEMPt and change the digit until you hear the sound of “beep” or “pi pi”.
(R4274)
3. Diagnose by the sound.
H“ pi ” : The number of tens does not accord with the error code.
H“ pi pi ” : The number of tens accords with the error code.
H“ beep ” : The both numbers of tens and units accord with the error code. (→See 7.)
4. Enter the diagnosis mode again.
Press the MODE button.
(R4275)
The digit of the number of units blinks.
(R4276)
246
Troubleshooting
SiEBE18-526
Service Check Function
5. Press the TEMP button.
Press TEMPs or TEMPt and change the digit until you hear the sound of “beep”.
(R4277)
6. Diagnose by the sound.
H“ pi ” : The both numbers of tens and units do not accord with the error code.
H“ pi pi ” : The number of tens accords with the error code.
H“ beep ” : The both numbers of tens and units accord with the error code.
7. Determine the error code.
The digits indicated when you hear the “beep” sound are error code.
8. Exit from the diagnosis mode.
Press the MODE button.
(R4278)
Error Code List in
Relation to RA
Indoor Units
- : Not used for troubleshooting
Indication on
the remote
controller
Description of the Fault
Details of fault
(Refer to the
indicated
page.)
00
Indoor unit in normal condition (Conduct a diagnosis of the outdoor
unit.)
—
A1
Indoor unit PCB abnormality
257
A5
Freeze-up protection control or high pressure control (heat pump
model only)
AC motor (Wall : 20~35 C series, Duct, Floor /
Ceiling)
Fan motor or related
abnormality
DC motor (Wall : 20~35 D series and 50~71 B
series, Floor)
258
Heat exchanger thermistor or related abnormality
263
Shutter drive motor / shutter limit switch abnormality
264
Room temperature thermistor abnormality
263
A6
C4
C7
C9
Troubleshooting
260
261
247
Service Check Function
2.2
SiEBE18-526
SkyAir Indoor Unit INSPECTION/TEST Button
Explanation
Caution
The following modes can be selected by using the [Inspection/Test Operation] button on the
remote control.
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Depress Inspection/Test Operation button
for more than 4 seconds.
Indoor unit settings can be made
• Filter sign time
• Air flow direction
• Others
Local
setting
mode
Service
mode
Depress Inspection/Test Operation button
for more than 4 seconds.
Service data can be obtained.
• Malfunciton code history
• Temperature data of various sections
Service settings can be made.
• Forced fan ON
• Air flow direction/volume setting
Press Inspection/Test Operation button once.
Normal
mode
Press Inspection/Test Operation button once.
Or after 30 minutes
Press Inspection/Test Operation
button once.
After 10 seconds
Following codes can be checked.
• Malfunction codes
Inspection
• Indoor model code
mode
• Outdoor model code
Test
operation
mode
Press Inspection/Test Operation
button once.
248
Thermostat is forcibly turned on.
(V0815)
Troubleshooting
SiEBE18-526
2.3
Service Check Function
SkyAir Indoor Unit Wired Remote Controller
Explanation
If operation stops due to malfunction, the remote controller’s operation LED blinks, and
malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are
displayed when the inspection mode is entered.) The malfunction code enables you to tell what
kind of malfunction caused operation to stop. See page 253 for malfunction code and
malfunction contents.
Operation lamp
Indoor unit No. in which
a malfunction occurs
Inspection display
Malfunction code
(S2001)
Troubleshooting
249
Service Check Function
2.4
SiEBE18-526
SkyAir Indoor Unit Wireless Remote Controller
If equipment stops due to a malfunction, the operation indicating LED on the light reception
section flashes.
The malfunction code can be determined by following the procedure described below. (The
malfunction code is displayed when an operation error has occurred. In normal condition, the
malfunction code of the last problem is displayed.)
Procedure
1. Press the INSPECTION/TEST button to select “Inspection.”
The equipment enters the inspection mode. The “Unit” indication lights and the Unit No.
display shows flashing “0” indication.
2. Set the Unit No.
Press the UP or DOWN button and change the Unit No. display until the buzzer (*1) is
generated from the indoor unit.
∗1 Number of beeps
3 short beeps : Conduct all of the following operations.
1 short beep : Conduct steps 3 and 4.
Continue the operation in step 4 until a buzzer remains ON. The continuous buzzer indicates
that the malfunction code is confirmed.
Continuous beep : No abnormality.
3. Press the MODE selector button.
The left “0” (upper digit) indication of the malfunction code flashes.
4. Malfunction code upper digit diagnosis
Press the UP or DOWN button and change the malfunction code upper digit until the
malfunction code matching buzzer (*2) is generated.
„ The upper digit of the code changes as shown below when the UP and DOWN buttons are
pressed.
“UP” button
“DOWN” button
(S2002)
∗2 Number of beeps
Continuous beep : Both upper and lower digits matched.(Malfunction code confirmed)
2 short beeps: Upper digit matched.
1 short beep : Lower digit matched.
5. Press the MODE selector button.
The right “0” (lower digit) indication of the malfunction code flashes.
6. Malfunction code lower digit diagnosis
Press the UP or DOWN button and change the malfunction code lower digit until the
continuous malfunction code matching buzzer (*2) is generated.
„ The lower digit of the code changes as shown below when the UP and DOWN buttons are
pressed.
“UP” button
“DOWN” button
(S2003)
250
Troubleshooting
SiEBE18-526
Service Check Function
Normal status
Enters inspection mode from normal
status when the INSPECITON/TEST
button is pressed.
1 Press INSPECTION/TEST button.
If no button is pressed
for 1 minute,
equipment returns to
normal status.
3
Press
MODE
selector
button
When MODE selector
button is pressed or
no button is pressed
for 1 minute,
equipment returns to
normal status.
If no button is pressed
for 1 minute, equipment
returns to normal status.
5 Press MODE selector button.
(S2005)
Troubleshooting
251
Service Check Function
2.5
SiEBE18-526
Sky Air Indoor Unit Error Codes and LED Indication
Symbols
5 : Blinks 4 : On 3 : Off
— : No connection with troubleshooting
 : High probability of malfunction
{ : Possibility of malfunction
… : Low probability of malfunction
— : No possibility of malfunction (do not replace)
System
Details of
Location of Malfunction
Contents of Malfunction
Malfunction
Other
PC Board
(Reference
than PC Outdoor
Page)
Remote
Indoor
Board
Controller
Unit
Unit

—
{
{
Transmission error (between
282
indoor and remote controller)

—
{
{
Transmission error between
283
“main” remote controller and
“sub” remote controller

—
{
—
Excessive indoor units
284
connected to this system.
Remote
Controller
Display
U5
U8
UA
Indoor Unit
Remote
Indoor
Location of Malfunction
Contents of Malfunction
Controller
Unit
Other
PC
Board
Display
LED
than PC Outdoor Indoor
Remote
Display
Board
Controller
(H1P)
Unit
Unit
—
—
—
—
Normal → to outdoor unit
5
252
Details of
Malfunction
(Reference
Page)
—
5
4
3
5
A1
—
—
{
—
Failure of indoor unit PC
board (For self-diagnosis by
LED, refer to p.242.)
268
A3

—
—
—
269
5
AF

—
—
—
5
A6

—
…
—
(FHQ only)
5
A7

—
…
—
5
5
AJ

—
{
—
Malfunction of drain water
level system
Float switch operation
during compressor stop
Indoor unit fan motor
overload / overcurrent / lock
Swing flap motor
Malfunction / Lock
Failure of capacity setting
C4

—
…
—
5
C5

—
…
—
5
C9

—
…
—
5
CJ
—
—
…
—
Malfunction of heat
exchanger temperature
sensor system (R2T)
Malfunction of heat
exchanger temperature
sensor system (R3T)
Malfunction of suction air
temperature sensor system
Malfunction of remote
control air temperature
sensor system
271
272,273
275
277
278
279
280
281
Troubleshooting
SiEBE18-526
2.6
Service Check Function
Malfunction Code Indication by Outdoor Unit PCB
<Monitor mode>
Contents of malfunction
To enter the monitor mode, push the
MODE button (BS1) when in “Setting
mode 1”.
Malfunction
code
Abnormal discharge pressure
HPS activated
E3
Abnormal suction pressure
Abnormal Pe
E4
Compressor lock
Detection of INV compressor lock
E5
Over load, over current,
Instantaneous over current of DC fan motor
E7
abnormal lock of outdoor unit fan motor
Detection of DC fan motor lock
Malfunction of electronic expansion valve
EV1
E9
EV2
<Selection of setting item>
Push the SET button (BS2) and set
the LED display to a setting item.
Faulty sensor of outdoor air temperature
Faulty Ta sensor
H9
Abnormal discharge pipe temperature
Abnormal Td
F3
Faulty sensor of discharge pipe temperature
Faulty Tdi sensor
J3
Faulty sensor of suction pipe temperature
Faulty Ts sensor
J5
Faulty sensor of heat exchanger temperature
Faulty Tb sensor
J6
Faulty sensor of subcool heat exchanger temperature
Faulty Tsh sensor
J9
Faulty sensor of discharge pressure
Faulty Pc sensor
JA
Faulty sensor of suction pressure
Faulty Pe sensor
JC
Inverter radiation fin temperature rise
Inverter radiation fin over heated
L4
DC output over current
Inverter instantaneous over current
L5
Electronic thermal switch
Electronic thermal switch 1
L8
Electronic thermal switch 2
<Confirmation of malfunction 1>
Out-of-step
Push the RETURN button (BS3)
once to display "First digit" of
malfunction code.
Speed down after startup
Lightening detection
Stall prevention (Limit time)
Stall prevention (Current increasing)
L9
Stall prevention (Faulty startup)
Abnormal wave form in startup
Out-of-step
<Confirmation of malfunction 2>
Push the SET button (BS2) once to
display "Second digit" of malfunction
code.
Transmission error between inverter and outdoor unit
Inverter transmission error
LC
Faulty temperature sensor of inverter radiation fin
Faulty thermistor of inverter fin
P4
Incorrect combination of inverter and fan driver
Incorrect combination of inverter and fan driver
PJ
Gas shortage
Gas shortage alarm
U0
Insufficient inverter voltage
U2
Abnormal power supply voltage
Detail
description
on the
right.
Inverter open phase (phase T)
Charging error of capacitor in inverter main circuit
Abnormal SP-PAM
Over voltage
Over current/Over voltage (Hard detection)
Abnormal latch circuitry
No implementation of test-run
U3
Transmission error between indoor and outdoor unit
I/O transmission error
U4
Transmission error of other system
Indoor unit system malfunction in other system or
U9
other unit of own system
<Confirmation of malfunction 3>
Push the SET button (BS2) once to
display "master or slave1 or slave2"
and "malfunction location".
Erroneous on-site setting
Conflict of refrigerant type in indoor units
UA
Faulty system function
Incorrect wiring (Auto address error)
UH
Transmission error in accessory devices, conflict
Malfunction of multi level converter, abnormality in
UF
in wiring and piping, no setting for system
conflict check
Push the RETURN button (BS3) and
switches to the initial status of
“Monitor mode”.
∗ Push the MODE button (BS1) and
returns to “Setting mode 1”.
Troubleshooting
(V3167)
253
Service Check Function
Malfunction
SiEBE18-526
Confirmation of malfunction 1
Confirmation of malfunction 2
Confirmation of malfunction 3
code
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED1
LED2
LED3
LED4
LED5
LED6
LED7
E3
9
7
8
7
7
9
9
E7
9
9
9
9
8
8
8
8
7
7
7
7
7
7
7
7
7
9
9
9
9
7
7
9
9
7
9
9
E9
9
8
7
9
7
7
9
L8
9
9
9
9
9
9
9
9
9
9
9
8
8
8
8
8
8
8
8
8
8
8
7
7
7
7
7
7
7
7
7
7
7
9
7
7
7
7
9
9
9
7
7
9
7
7
7
9
9
7
7
9
9
9
7
7
9
9
7
9
7
9
7
7
7
7
9
9
9
9
7
9
7
7
7
9
7
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
9
7
9
7
7
7
7
7
7
7
7
7
7
7
7
7
7
9
7
9
9
7
7
9
7
7
7
7
7
7
7
7
L9
9
8
7
9
7
7
9
9
8
8
7
7
7
7
9
9
9
9
9
8
8
8
8
8
7
7
7
7
7
7
7
9
7
7
7
9
9
7
7
9
7
7
7
9
9
7
9
7
7
9
9
9
9
9
8
8
8
8
8
8
8
8
8
8
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
U9
9
9
9
8
8
8
7
7
7
7
7
9
7
9
7
9
7
7
9
9
9
8
8
8
8
8
8
7
7
7
7
7
7
7
7
7
7
7
7
UA
9
8
7
9
7
9
9
7
9
7
7
9
8
8
7
7
7
7
UH
9
9
8
8
7
7
9
9
7
9
9
9
9
9
9
9
8
8
8
8
7
7
7
7
7
7
7
7
E4
E5
H9
F3
J3
9
9
9
7
7
7
8
8
8
7
7
7
9
9
9
7
7
9
7
9
7
9
7
8
7
9
9
9
J5
J6
J9
JA
JC
L4
L5
LC
P4
9
7
8
9
7
7
7
9
7
8
9
7
7
9
PJ
U0
U2
U3
U4
UF
8 : ON
9 : Blink
7 : OFF
Malfunction code 1st
digit display section
8 : ON
9 : Blink
7 : OFF
Malfunction code 2nd
digit display section
Master
Slave 1
Slave 2
7 7
7 9
9 7
Malfunction
location
(V3168)
254
Troubleshooting
SiEBE18-526
List of Malfunction Code
3. List of Malfunction Code
Indoor
Unit
Malfunction
code
Malfunction contents
A0
A1
A3
A5
A6
A7
A9
AF
AJ
C4
Error of external protection device
PC board defect, E2 PROM defect
Malfunction of drain level control system (33H)
Freeze-up protection or high pressure control
Fan motor (MF) lock, overload
Malfunction of swing flap motor (MA)
Malfunction of electronic expansion valve (20E)
Drain pump error
Malfunction of capacity setting
Malfunction of thermistor (R2T) for heat exchanger
(loose connection, disconnection, short circuit,
failure)
Malfunction of thermistor (R3T) for heat exchanger
(loose connection, disconnection, short circuit,
failure)
Shutter drive motor / shutter limit switch abnormality
Malfunction of thermistor (R1T) for air inlet (loose
connection, disconnection, short circuit, failure)
Malfunction of thermistor for air outlet (loose
connection, disconnection, short circuit, failure)
Malfunction of thermostat sensor in remote controller
PC board defect, E2 PROM defect
Faulty BP unit PCB
Actuation of high pressure switch
Actuation of low pressure switch
Compressor motor lock
Standard compressor lock or over current
Malfunction of outdoor unit fan motor
Malfunction of moving part of electronic expansion
valve (Y1E~2E)
Abnormal discharge pipe temperature
Refrigerant overcharged
Malfunction of high pressure switch
Actuation of low pressure switch
Abnormal outdoor fan motor signal
Malfunction of thermistor (R1T) for outdoor air (loose
connection, disconnection, short circuit, failure)
Faulty BP liquid or gas pipe thermistor
Current sensor malfunction
Malfunction of discharge pipe thermistor (R3T) (loose
connection, disconnection, short circuit, failure)
Malfunction of thermistor (R2T) for suction pipe
(loose connection, disconnection, short circuit,
failure)
Malfunction of thermistor (R4T) for heat exchanger
(loose connection, disconnection, short circuit,
failure)
Malfunction of header thermistor
Malfunction of thermistor (R7T) for oil equalizing pipe.
(loose connection, disconnection, short circuit,
failure)
Malfunction of receiver gas pipe thermistor (R5T)
Malfunction of discharge pipe pressure sensor
Malfunction of suction pipe pressure sensor
Inverter system error
C5
C7
C9
CA
Outdoor
Unit
CJ
E1
E2
E3
E4
E5
E6
E7
E9
F3
F6
H3
H4
H7
H9
J0
J2
J3
J5
J6
J7
J8
J9
JA
JC
L0
Troubleshooting
9: Blink 8: ON 7: OFF
Page Referred
SkyAir
BP Unit
Outdoor
RA Indoor
Indoor Unit
Unit
Unit
—
—
—
—
257
268
—
—
—
269
—
—
258
—
—
—
260, 261 272, 273
—
—
—
275
—
—
—
—
287
—
—
271
—
—
—
277
—
—
263
278
—
—
—
279
—
—
264
263
—
280
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
281
—
—
—
—
—
—
—
—
—
—
288
—
—
—
—
—
—
—
294
—
295
296
297
—
298
299
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
300
—
—
—
—
301
—
—
—
—
—
—
289
—
—
—
—
302
—
—
—
303
—
—
—
304
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
305
306
307
—
255
List of Malfunction Code
Outdoor
Unit
Malfunction
code
Malfunction contents
L4
L5
L6
L8
L9
LA
LC
Malfunction of inverter radiating fin temperature rise
Inverter compressor motor grounding, short circuit
Compressor motor coil grounding on short circuit
Inverter current abnormal
Inverter start up error
Malfunction of power unit
Malfunction of transmission between inverter and
control PC board
Inverter over-ripple protection
Malfunction of inverter radiating fin temperature rise
sensor
Faulty combination inverter and fan driver,
Malfunction of capacity setting
Low pressure drop due to refrigerant shortage or
electronic expansion valve failure
Reverse phase / open phase
Power supply insufficient or instantaneous failure
Check operation is not conducted.
Malfunction of transmission between indoor and BP
units
Malfunction of transmission between remote
controller and indoor unit
Failure of remote controller PC board or setting
during control by remote controller
Malfunction of transmission between outdoor units
Malfunction of transmission between master and
slave remote controllers (malfunction of slave remote
controller)
Malfunction of transmission between indoor unit and
outdoor unit in the same system
Mismatching of indoor unit, BP unit and outdoor unit
etc.
Address duplication of central remote controller
Malfunction of transmission between central remote
controller and indoor unit
Refrigerant system not set, incompatible wiring /
piping
Malfunction of system, refrigerant system address
undefined
Transmission error between outdoor unit and BP unit
P1
P4
PJ
System
SiEBE18-526
U0
U1
U2
U3
U4
U5
U5
U7
U8
U9
UA
UC
UE
UF
UH
UJ
9: Blink 8: ON 7: OFF
Page Referred
SkyAir
BP Unit
Outdoor
RA Indoor
Indoor Unit
Unit
Unit
—
—
—
308
—
—
—
309
—
—
—
—
—
—
—
310
—
—
—
311
—
—
—
—
—
—
—
312
—
—
—
—
—
—
—
314
—
—
—
315
—
—
—
316
—
—
—
—
—
—
—
—
—
—
—
290
—
317
319
—
—
282
—
—
—
—
—
—
—
—
—
283
—
—
—
—
—
—
—
320
—
284
—
321
—
—
—
—
—
—
—
—
—
—
—
322
—
—
—
323
—
—
292
—
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
256
Troubleshooting
SiEBE18-526
Troubleshooting for RA Indoor Unit
4. Troubleshooting for RA Indoor Unit
4.1
Indoor Unit PCB Abnormality
A1
Remote
Controller
Display
Method of
Malfunction
Detection
Evaluation of zero-cross detection of power supply by indoor unit.
Malfunction
Decision
Conditions
When there is no zero-cross detection in approximately 10 continuous seconds.
Supposed
Causes
„ Faulty indoor unit PCB
„ Faulty connector connection
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector connection check
(note).
Is it normal?
NO
Correct connections.
YES
Replace PCBs.
(R1400)
Note:
Connector Nos. vary depending on models.
Control connector
Model Type
Wall Mounted Type 20 / 25 / 35 class
Wall Mounted Type 50 / 60 / 71 class
Duct Connected Type
Floor / Ceiling Suspended Dual Type
Floor Standing Type
Troubleshooting
Connector No.
Terminal strip~Control PCB
Terminal strip~Control PCB
Terminal strip~Control PCB
S37
Control PCB : S7, S201, S203
Power Supply PCB : S8, S202, S204
257
Troubleshooting for RA Indoor Unit
4.2
SiEBE18-526
Freeze-up Protection Control or High Pressure Control
Remote
Controller
Display
A5
Method of
Malfunction
Detection
„ High pressure control (heat pump model only)
During heating operations, the temperature detected by the indoor heat exchanger
thermistor is used for the high pressure control (stop, outdoor fan stop, etc.)
„ The freeze-up protection control (operation halt) is activated during cooling operation
according to the temperature detected by the indoor unit heat exchanger thermistor.
Malfunction
Decision
Conditions
„ High pressure control
During heating operations, the temperature detected by the indoor heat exchanger
thermistor is above 65°C
„ Freeze-up protection
When the indoor unit heat exchanger temperature is below 0°C during cooling operation.
Supposed
Causes
„
„
„
„
„
258
Operation halt due to clogged air filter of the indoor unit.
Operation halt due to dust accumulation on the indoor unit heat exchanger.
Operation halt due to short-circuit.
Detection error due to faulty indoor unit heat exchanger thermistor.
Detection error due to faulty indoor unit PCB.
Troubleshooting
SiEBE18-526
Troubleshooting for RA Indoor Unit
Troubleshooting
Caution
Check No.06
Refer to P.266
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the air passage.
Is there any
short-circuit?
YES
Provide sufficient air passage.
NO
Check the intake air filter.
Is it very dirty?
YES
Clean the air filter.
NO
Check the dust accumulation on
the indoor unit heat exchanger.
Is it very dirty?
YES
Clean the heat exchanger.
NO
Check No. 06
Indoor unit heat exchanger
thermistor check
Does it conform to
the thermistor characteristic
chart?
NO
YES
Replace the indoor unit PCB.
Replace the thermistor
(replace the indoor unit PCB).
(R4695)
Troubleshooting
259
Troubleshooting for RA Indoor Unit
4.3
SiEBE18-526
Fan Motor or Related Abnormality
4.3.1 AC Motor (Wall 20~35 C series, Duct, Floor / Ceiling)
Remote
Controller
Display
A6
Method of
Malfunction
Detection
The rotation speed detected by the Hall IC during fan motor operation is used to determine
abnormal fan motor operation.
Malfunction
Decision
Conditions
When the detected rotation speed is less than 50% of the HH tap under maximum fan motor
rotation demand.
Supposed
Causes
„
„
„
„
„
Operation halt due to short circuit inside the fan motor winding.
Operation halt due to breaking of wire inside the fan motor.
Operation halt due to breaking of the fan motor lead wires.
Operation halt due to faulty capacitor of the fan motor.
Detection error due to faulty control PCB.
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Caution
Check No.16
Refer to P.267
Operate the fan.
Does it rotate?
YES
Check No. 16
Check Hall IC
NO
Rotate the fan by hand.
Is there an output?
NO
Does it rotate smoothly?
NO
Replace the fan motor or control
PCB.
YES
Replace the fan motor
Check the fan motor voltage.
YES
Check the fan motor voltage.
(immediately after re-start)
Is it at the rated voltage?
∗
YES
NO
Is it at the rated voltage?
∗
YES
Replace control PCB.
Replace the fan motor.
Replace the control PCB.
∗ Measure the voltage between
the red and black lead wires of
the fan motor, and check if the
maximum voltage reaches the
rated voltage.
Check the capacitor's
conductivity
Is there conductivity?
NO
YES
Replace the capacitor.
(Replace the control PCB.)
NO
Replace the fan motor.
260
(R3219)
Troubleshooting
SiEBE18-526
Troubleshooting for RA Indoor Unit
4.3.2 DC Motor (Wall 20~35 D series and 50~71 class, Floor)
Remote
Controller
Display
A6
Method of
Malfunction
Detection
The rotation speed detected by the Hall IC during fan motor operation is used to determine
abnormal fan motor operation.
Malfunction
Decision
Conditions
When the detected rotation speed is less than 50% of the H tap under maximum fan motor
rotation demand.
Supposed
Causes
„
„
„
„
„
Troubleshooting
Operation halt due to short circuit inside the fan motor winding.
Operation halt due to breaking of wire inside the fan motor.
Operation halt due to breaking of the fan motor lead wires.
Operation halt due to faulty capacitor of the fan motor.
Detection error due to faulty indoor unit PCB (1).
261
Troubleshooting for RA Indoor Unit
SiEBE18-526
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check No.01
Refer to P.265
Turn off power supply
and rotate fan by hand.
Check No.02
Refer to P.265
Does fan rotate
smoothly?
NO
Replace fan motor.
YES
Turn power ON and
operate fan.
Does it rotate?
Turn off power supply
NO and disconnect fan motor
connector, then turn
power ON.
YES
Check No.01
Check output of fan
motor connector
Is motor
power voltage
DC 200V
generated?
NO
Replace indoor
unit PCB (1).
YES
Is motor
control power voltage
DC 15V
generated?
NO Check No.02
Check output of indoor
unit PCB (1)
YES
Turn off power supply and
disconnect fan motor
connector, then turn
power ON again.
Is motor control
power voltage DC 16V
generetad?
NO
Replace indoor
unit PCB (1).
YES
Check No.01
Check output of fan
motor connector
Is rotation
number command
voltage DC 5V
generated?
Replace indoor
unit PCB (2).
YES
NO
Stop fan motor.
Check No.01
Check output of fan
motor connector
Check No.01
Check output of fan
motor connector
Is rotation
NO
number command pulse
generated?
YES
Is rotation
NO
number command pulse
generated?
YES
Replace fan motor.
Note : Motor may
break when the
motor connector
is disconnected
while remaining
power supply.
Replace fan motor
and indoor PCB (2).
Replace indoor
unit PCB (2).
Replace fan motor.
Replace indoor
unit PCB (2).
(R1214)
262
Troubleshooting
SiEBE18-526
4.4
Troubleshooting for RA Indoor Unit
Thermistor or Related Abnormality (Indoor Unit)
C4, C9
Remote
Controller
Display
Method of
Malfunction
Detection
The temperatures detected by the thermistors are used to determine thermistor errors.
Malfunction
Decision
Conditions
When the thermistor input is more than 4.96 V or less than 0.04 V during compressor
operation∗.
∗ (reference)
When above about 212°C (less than 120 ohms) or below about -50°C (more than 1,860 kohms).
Note:
Supposed
Causes
The values vary slightly in some models.
„ Faulty connector connection
„ Faulty thermistor
„ Faulty PCB
Troubleshooting
Caution
Check No.06
Refer to P.266
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the connector connection.
Is it normal?
NO
Correct the connection.
YES
Check No. 06
Thermistor resistance check
Is it normal?
NO
YES
Replace the thermistor.
(Replace the indoor unit PCB.)
Replace the indoor unit PCB.
(R4696)
C4 : Heat exchanger temperature thermistor
C9 : Room temperature thermistor
Troubleshooting
263
Troubleshooting for RA Indoor Unit
4.5
SiEBE18-526
Shutter Drive Motor / Shutter Limit Switch Abnormality
Remote
Controller
Display
C7
Method of
Malfunction
Detection
The shutter open / close performance is detected by the limit switch attached on its structure. In
this way, the shutter drive motor and the shutter limit switch are checked for failure.
Malfunction
Decision
Conditions
When the shutter is open, the limit switch is closed.
Supposed
Causes
„
„
„
„
„
„
„
Shutter drive motor defective
Shutter limit switch defective
Shutter itself deformed (warped)
Shutter's sealing material too thick
Detection error by broken relay harness or disconnected connector
Detection error due to defective PCB (2)
Foreign substance in blow port
Troubleshooting
Caution
Check No.03
Refer to P.265
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn off the power.
Foreign substance in
the shutter structure?
YES
Remove such substance.
NO
Check No. 03
Check the limit switch continuity.
Limit switch on power?
NO
Replace the limit switch.
YES
Open the shutter and turn on the
power.
Shutter closed?
NO
YES
Shutter opening itself?
Relay harness
broken or connector
disconnected?
NO
YES
YES
Reconnect the connector or
replace the relay harness.
Replace the shutter drive
motor or the PCB (2).
Check the shutter's sealing
material.
NO
Check the shutter for
deformation or its sealing
material.
(Q0410)
264
Troubleshooting
SiEBE18-526
4.6
Troubleshooting for RA Indoor Unit
Check
4.6.1 Fan Motor Connector Output Check
Check No.01
1.
2.
3.
4.
5.
Check connector connection.
Check motor power supply voltage output (pins 4-7 and 4-8).
Check motor control voltage (pins 4-3).
Check rotation command voltage output (pins 4-2).
Check rotation pulse input (pins 4-1).
S1 or S301
7
6
5
4
3
2
1
S302
Motor power supply voltage
Unused
Unused
P.0V (reference potential)
Motor control voltage (15 VDC)
Rotation command voltage (1~ 5 VDC)
Rotation pulse input
8
7
6
5
4
3
2
1
Motor power supply voltage
Unused
Unused
Unused
P.0V (reference potential)
Motor control voltage (15 VDC)
Rotation command voltage (1 to 5 VDC)
Rotation pulse input
(R4684)
Check No.02
1. Check connector connection.
2. Check motor control voltage output (pins 2-1).
S202
5
4
3
2
1
Motor power supply voltage
Unused
Unused
P.0V (reference potential)
Motor control power supply
(R1073)
4.6.2 Limit Switch Continuity Check
Check No.03
Remove the front grille. The limit switch is located at the left side of the drain pan assembly.
Check the continuity of the switch connection.
Shutter status
Open
Closed
Continuity
Continuity
No continuity
Upward
Tester
Limit switch
Forward
∗
Troubleshooting
(Q0363)
The shutter can be opened and closed with hand. Keep the shutter open and closed all the
way for each continuity check steps.
265
Troubleshooting for RA Indoor Unit
SiEBE18-526
4.6.3 Thermistor Resistance Check
Check No.06
Remove the connectors of the thermistors on the PCB, and measure the resistance of each
thermistor using tester.
The relationship between normal temperature and resistance is shown in the graph and the
table below.
Thermistor R25°C=20kΩ B=3950
Temperature (°C)
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
211.0 (kΩ)
150
116.5
88
67.2
51.9
40
31.8
25
20
16
13
10.6
8.7
7.2
Tester
Resistance range
(R25 = 20k Ω , B= 3950)
(k Ω)
150
100
50
-15
266
0
15
30
45
(°C)
(R1437)
Troubleshooting
SiEBE18-526
Troubleshooting for RA Indoor Unit
4.6.4 Power Supply Waveforms Check
Check No.10
Measure the power supply waveform between pins 1 and 3 on the terminal board, and check
the waveform disturbance.
„ Check to see if the power supply waveform is a sine wave (Fig.1).
„ Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2)
[Fig.1]
[Fig.2]
4.6.5 Hall IC Check
Check No.16
1. Check the connector connection.
2. With the power ON, operation OFF, and the connector connected, check the following.
∗Output voltage of about 5 V between pins 1 and 3.
∗Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.
Failure of (1) Æ faulty PCB Æ Replace the PCB.
Failure of (2) Æ faulty hall IC Æ Replace the fan motor.
Both (1) and (2) result Æ Replace the PCB.
The connector has 3 pins, and there are two patterns of lead wire colors.
1
Gray (power supply)
2
Purple (signals)
3
Blue (grounding)
1
White (power supply)
2
White with black line (signals)
3
White with manufacturer mark (grounding)
(R1990)
Troubleshooting
267
Troubleshooting for SkyAir Indoor Unit
SiEBE18-526
5. Troubleshooting for SkyAir Indoor Unit
5.1
Indoor Unit PCB Abnormality
Remote
Controller
Display
A1
Applicable
Models
FFQ-B & FHQ-BU
Method of
Malfunction
Detection
Check data from E²PROM.
Malfunction
Decision
Conditions
When data could not be correctly received from the E²PROM
E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power
supply is turned off.
Supposed
Causes
„ Failure of PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn the power supply off once
and then back on.
Normal reset?
NO
YES
Could be outside cause
(noise, etc.)
other than malfunction
Indoor unit PCB
replacement
(Q0411)
268
Troubleshooting
SiEBE18-526
5.2
Troubleshooting for SkyAir Indoor Unit
Malfunction of Drain Water Level System (Float Type)
Remote
Controller
Display
A3
Applicable
Models
FFQ-B & FHQ-BU
Method of
Malfunction
Detection
By float switch OFF detection
Malfunction
Decision
Conditions
When rise of water level is not a condition and the float switch goes OFF.
Supposed
Causes
„
„
„
„
„
„
Troubleshooting
Failure of drain pump
Improper drain piping work
Drain piping clogging
Failure of float switch
Failure of indoor unit PCB
Failure of short-circuit connector
269
Troubleshooting for SkyAir Indoor Unit
SiEBE18-526
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
If “A3” is detected by a PC board
which is not mounted with X15A,
the PC board is defective.
Is drain
raising mechanism
connected?
NO
Is the
short-circuit
connector connected to
X15A on the indoor unit
PCB?
NO
Short-circuit connector
connection
YES
YES
Continuity check of short-circuit
connector
Is there continuity?
NO
YES
Is a drain
pump connected to the
indoor unit PCB?
Short-circuit connector
replacement
Indoor unit PCB
replacement
Connect drain pump
NO
YES
Does the drain
pump turn after restarting
operation?
YES
Is the
drainwater level
abnormally
high?
Is the float
switch connected to
X15A?
NO
Froat switch connection
YES
Remove the float switch from
X15A, short-circuit X15A, and
restart operation.
Set to“emergency” and check
the voltage of X25A.
Does
display of malfunction
“A3” appear?
YES
YES
NO
Malfuncton of drain system
NO
NO
220-240 VAC?
YES
NO
Float switch replacement
Indoor unit PCB
replacement
Drain pump replacement
Indoor unit PCB
replacement
(Q0412)
270
Troubleshooting
SiEBE18-526
5.3
Troubleshooting for SkyAir Indoor Unit
Malfunction of Drain System
Remote
Controller
Display
AF
Applicable
Models
FHQ-BU
Method of
Malfunction
Detection
Water leakage is detected based on float switch ON/OFF operation while the compressor is in
non-operation.
Malfunction
Decision
Conditions
When the float switch changes from ON to OFF while the compressor is in non-operation.
Supposed
Causes
„ Error in drain pipe installation
„ Faulty float switch
„ Faulty indoor unit PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are float
switch and drain pipe
normal?
NO
Possible failure of float switch.
Check to see if drain-up height
and horizontal pipe length
exceed specifications.
YES
Is water
drainage system
normal?
∗In FHQ-B problems can also occur in
the optional drain-up kit.
Is drain-up
kit installed?
NO
YES
NO
Clogged drain water discharge
system
Clogged drain pump
Faulty float switch
Replace indoor unit PCB.
Check jumper connector
X15A.
YES
Is drain pump
normal?
NO
Check drain pump and drain
pipe.
YES
Is
amount
of circulated drain
water excessive after
pump stops
operation?
YES
Check water drainage system.
Check to see if drain-up height
and horizontal pipe length
exceed specifications.
NO
Does
drain water
flow in reverse during
nonoperation?
YES
Faulty trap in water drainage
system
NO
Replace indoor unit PCB.
(S2733)
Troubleshooting
271
Troubleshooting for SkyAir Indoor Unit
5.4
SiEBE18-526
Indoor Unit Fan Motor Lock
Remote
Controller
Display
A6
Applicable
Models
FHQ-BU
Method of
Malfunction
Detection
Detection by failure of signal for detecting number of turns to come from the fan motor
Malfunction
Decision
Conditions
When number of turns can’t be detected even when output voltage to the fan is maximum
Supposed
Causes
„
„
„
„
Failure of indoor unit fan motor
Broken or disconnected wire
Failure of contact
Failure of indoor unit PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are
X20A and
X26A properly
connected?
NO
Connect correctly.
YES
With
X26A unplugged
and the power supply
turned on, is there about 12
VDC between pins 1
and 3 of
X26A?
YES
NO
Indoor unit PCB
replacement
Check indoor unit fan
motor and motor wiring.
(Q0413)
272
Troubleshooting
SiEBE18-526
5.5
Troubleshooting for SkyAir Indoor Unit
Malfunction of Indoor Unit Fan Motor
Remote
Controller
Display
A6
Applicable
Models
FFQ-B
Method of
Malfunction
Detection
Detection of abnormal fan speed by signal from the fan motor
Malfunction
Decision
Conditions
When fan speed does not increase
Supposed
Causes
„
„
„
„
„
„
Troubleshooting
Disconnection, short circuit or disengagement of connector in fan motor harness
Faulty fan motor (disconnection, poor insulation)
Abnormal signal from fan motor (faulty circuit)
Faulty PCB
Instantaneous fluctuation of power supply voltage
Fan motor lock
(Caused by motor or other external factors)
„ Fan does not turn due to a tangle of foreign matters.
273
Troubleshooting for SkyAir Indoor Unit
SiEBE18-526
Troubleshooting
Caution
Check No.01
Refer to P.285
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn off the power supply.
Is there any
foreign matter
around the fan?
YES
Remove the foreign matter.
NO
Is the
harness from the fan
motor correctly connected to
X20A connector on
A1P?
NO
Connect correctly.
YES
Check No. 01
Check for the fan motor
connector.
Does
the resistance
between U,V,W phases
of fan motor balance each
other? Is there short circuit
between U,V,W
YES
phases
respectively?
YES
NO
Replace the fan motor.
Replace the indoor unit PCB.
(Q0414)
274
Troubleshooting
SiEBE18-526
5.6
Troubleshooting for SkyAir Indoor Unit
Swing Flap Motor Malfunction / Lock
Remote
Controller
Display
A7
Applicable
Models
FHQ-BU
Method of
Malfunction
Detection
Utilizes ON/OFF of the limit switch when the motor turns.
Malfunction
Decision
Conditions
When ON/OFF of the microswitch for positioning cannot be reversed even though the swing flap
motor is energized for a specified amount of time (about 30 seconds).
Supposed
Causes
„
„
„
„
Troubleshooting
Failure of motor
Failure of microswitch
Failure of connector connection
Failure of indoor unit PCB
275
Troubleshooting for SkyAir Indoor Unit
SiEBE18-526
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are
the connectors
correctly connected
to X29A and X14A
on the PC
board?
NO
Connect correctly.
YES
Is
the limit
switch's transfer
connector correctly
connected?
NO
Connect correctly.
YES
Turn the power supply
off once and back on,
and check whether the
swing flap motor
swings when the
power supply is turned
back on.
Does the swing
flap motor swing?
YES
NO
Turn the power supply
off once and back on,
and measure the
output voltage of
connector X29A when
the power supply is
turned back on.
Disconnect X14A,
turn the power supply
off once and back on,
and check if the limit
switch has continuity
when the power
supply is turned back
on.
Does
continuity/no
continuity
reverse?
YES
NO
220-240 VAC?
YES
NO
Replace the indoor unit P.C.B.
Replace the swing flap motor.
(S2009)
276
Troubleshooting
SiEBE18-526
5.7
Troubleshooting for SkyAir Indoor Unit
Malfunction of Capacity Setting
AJ
Remote
Controller
Display
Applicable
Models
FFQ-B, FHQ-BU
Method of
Malfunction
Detection
Capacity is determined according to resistance of the capacity setting adaptor and the memory
inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is
determined.
Malfunction
Decision
Conditions
Operation and:
(1)When the capacity code is not contained in the PCB’s memory, and the capacity setting
adaptor is not connected.
(2)When a capacity that doesn’t exist for that unit is set.
Supposed
Causes
„ Failure of capacity setting adaptor connection
„ Failure of indoor unit PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
capacity setting
adaptor plugged into X23A
of the indoor unit
PCB?
NO
YES
Plug a capacitor setting
adaptor that matches the
capacity of the unit into
X23A. (See note)
Turn the power supply off once
and back on.
Is AJ displayed on
the remote controller?
NO
YES
Bad contact of capacity
setting adaptor or
disconnected adaptor.
Indoor unit PCB
replacement
Could be outside cause
(noise, etc.) other than
malfunction.
(Q0415)
Note:
Troubleshooting
Capacity is factory set in the data IC on the PCB. A capacity setting adaptor that matches the
capacity of the unit is required in the following case.
If the indoor PCB installed at the factory is for some reason changed at the installation site, the
capacity will not be contained in the replacement PCB.
If you connect a capacity setting adaptor to a PCB in which the capacity is memorized, the
capacity setting for the PCB will become the capacity setting of the adaptor. (Priority of capacity
setting adaptor)
277
Troubleshooting for SkyAir Indoor Unit
5.8
SiEBE18-526
Malfunction of Heat Exchanger Thermistor (R2T)
Remote
Controller
Display
C4
Applicable
Models
FFQ-B, FHQ-BU
Method of
Malfunction
Detection
Malfunction detection is carried out by temperature detected by heat exchanger sensor.
Malfunction
Decision
Conditions
When the heat exchanger thermistor becomes disconnected or shorted while the unit is running.
Supposed
Causes
„
„
„
„
Failure of the sensor itself
Broken or disconnected wire
Failure of electronic circuitry (indoor unit PCB)
Failure of connector contact
Troubleshooting
Caution
Check No.02
Refer to P.286
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check contact of connector
Is it normal?
NO
Connect correctly.
YES
Disconnect the heat exchanger
sensor (R2T) from X18A on
the indoor unit PCB and
measure the resistance.
Is the
thermistor normal?
(See note)
NO
Heat exchanger
sensor replacement.
YES
If contact is OK,
replace indoor unit
PCB.
HSee Check No. 02 for “Thermistor temperature and resistance characteristics”.
278
(Q0416)
Troubleshooting
SiEBE18-526
5.9
Troubleshooting for SkyAir Indoor Unit
Malfunction of Heat Exchanger Thermistor (R3T)
Remote
Controller
Display
C5
Applicable
Models
FFQ-B, FHQ-BU
Method of
Malfunction
Detection
Malfunction detection is carried out by temperature detected by heat exchanger sensor (R3T).
Malfunction
Decision
Conditions
When the heat exchanger thermistor becomes disconnected or shorted while the unit is running.
Supposed
Causes
„
„
„
„
Failure of the sensor itself
Broken or disconnected wire
Failure of electronic circuitry (indoor unit PCB)
Failure of connector contact
Troubleshooting
Check No.02
Refer to P.286
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check contact of connector
Is it normal?
NO
Connect correctly.
YES
Disconnect the heat exchange
sensor (R3T) from X17A on
the indoor unit PC board and
measure the resistance.
Is the
thermistor normal?
(See note)
NO
Heat exchanger
sensor replacement.
YES
If contact is OK,
replace indoor unit
PCB.
HSee Check No. 02 for “Thermistor temperature and resistance characteristics”.
Troubleshooting
(Q0417)
279
Troubleshooting for SkyAir Indoor Unit
SiEBE18-526
5.10 Malfunction of Suction Air Thermistor
Remote
Controller
Display
C9
Applicable
Models
FFQ-B, FHQ-BU
Method of
Malfunction
Detection
Malfunction detection is carried out by temperature detected by suction air temperature sensor.
Malfunction
Decision
Conditions
When the suction air temperature sensor’s thermistor becomes disconnected or shorted while
the unit is running.
Supposed
Causes
„
„
„
„
Failure of the sensor itself
Broken or disconnected wire
Failure of indoor unit PCB
Failure of connector contact
Troubleshooting
Caution
Check No.02
Refer to P.286
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check contact of connector
Is it normal?
NO
Connect correctly.
YES
Disconnect the sunction air
temperature sensor (R1T)
from X19A on the indoor unit
PCB and measure the
resistance.
Is the
thermistor normal?
(See note)
YES
NO
Suction air temperature
sensor replacement.
If contact is OK, replace
outdoor unit PCB.
HSee Check No. 02 for “Thermistor temperature and resistance characteristics”.
280
(Q0418)
Troubleshooting
SiEBE18-526
Troubleshooting for SkyAir Indoor Unit
5.11 Malfunction of Remote Controller Thermistor
Remote
Controller
Display
CJ
Applicable
Models
FFQ-B, FHQ-BU
Method of
Malfunction
Detection
Even if remote controller thermistor is faulty, system is possible to operate by system thermistor.
Malfunction detection is carried out by temperature detected by remote controller thermistor.
Malfunction
Decision
Conditions
When the remote controller thermistor becomes disconnected or shorted while the unit is
running.
Supposed
Causes
„ Failure of sensor itself
„ Broken wire
Troubleshooting
Check No.02
Refer to P.286
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn the power supply
off once and then
back on
Is CJ
displayed on the
remote
control?
YES
Replace remote control.
NO
Could be outside cause
(noise,etc.) other than
malfunction
HSee Check No. 02 for “Thermistor temperature and resistance characteristics”.
Troubleshooting
(Q0419)
281
Troubleshooting for SkyAir Indoor Unit
SiEBE18-526
5.12 Transmission Error (between Indoor Unit and Remote
Controller)
Remote
Controller
Display
U5
Applicable
Models
FFQ-B, FHQ-BU
Method of
Malfunction
Detection
Microcomputer checks if transmission between indoor unit and remote controller is normal.
Malfunction
Decision
Conditions
When transmission is not carried out normally for a certain amount of time
Supposed
Causes
„
„
„
„
Failure of remote controller
Failure of indoor PCB
Outside cause (noise, etc.)
Connection of 2 master remote controllers (When using 2 remote controllers)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Control by 2
remote controls
YES
SS1 of both
remote controls is
set to "main."
YES
NO
All indoor unit
PCB microcomputer
normal monitors
blinking
NO
YES
YES
Using multicore
transmission wiring
between indoor unit and
remote control
Resets
normally when power
supply is turned off
temporarily.
YES
NO
Set one of the remote
controls to"sub,"turn off
the power supply
temporarily, then restart
operation.
Indoor unit PCB
replacement
Malfunction could be
produced by noise.
Check the surrounding
area and restart
operation.
Change to double-core
independent cable.
NO
Is it good
condition from noise
interference?
NO
YES
Failure of remote control
PCB or replacement of
defective indoor unit
PCB
Malfunction could be
produced by noise.
Check the surrounding
area and restart
operation.
(Q0420)
282
Troubleshooting
SiEBE18-526
Troubleshooting for SkyAir Indoor Unit
5.13 Transmission Error (between Main and Sub Remote
Controller)
Remote
Controller
Display
U8
Applicable
Models
FFQ-B, FHQ-BU
Method of
Malfunction
Detection
In case of controlling with 2- remote controller, check the system using microcomputer if signal
transmission between indoor unit and remote controller (main and sub) is normal.
Malfunction
Decision
Conditions
Normal transmission does not continue for specified period.
Supposed
Causes
„ Transmission error between Main remote controller and Sub remote controller
„ Connection among “Sub” remote controllers
„ Faulty remote controller PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Controlling
with 2-remote control
NO
YES
Both SS-1
switches on remote
controls are turned
to "Sub"
YES
NO
SS-1switch on
remote control PCB
is turned to
"Main"
YES
NO
Turn the SS-1switch of one
remote control to "Main".
Turn OFF the power supply, and
restart operation
Turn OFF the power once and
restart operation.
Replace remote control PCB if
any error is generated.
Turn the SS-1switch of one
remote control to "Main".
Turn OFF the power supply, and
restart operation.
(S2042)
Troubleshooting
283
Troubleshooting for SkyAir Indoor Unit
SiEBE18-526
5.14 Malfunction of Field Setting Switch
Remote
Controller
Display
Applicable
Models
UA
FFQ-B, FHQ-BU
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Incorrect field setting
Supposed
Causes
„ Indoor-Outdoor (BP) transmission line
„ Faulty remote controller wiring
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
remote control
connected to one or more
indoor units?
YES
NO
Is
the remote
controller wiring jumped
between indoor
units?
YES
NO
Is
the field setting
for pair /
twin system
correct?
NO
Connect the remote control
correctly.
Remove the jumper.
Set correctly.
YES
Do the
microcomputer
normal monitors HAP
on all indoor unit PCB
blink?
NO
YES
Are wirings
between indoor and
BP unit correctly
connected?
NO
YES
Is 220 ~ 240
VAC between No.1 and 3
of X2M terminal
(indoor unit)?
Turn the power supply off once,
and back on to restart.
YES
NO
Does the
system conduct normal
operation?
YES
Connect correctly.
NO
Are
the wirings
between indoor
and BP unit
correctly
connected?
YES
Check the power supply
system inside the indoor unit.
Could be incorrect wiring.
Check again.
NO
Connect correctly.
Replace the indoor unit
PCB.
Normal
(Q0401)
284
Troubleshooting
SiEBE18-526
Troubleshooting for SkyAir Indoor Unit
5.15 Check
Check No. 01
Check for Fan Motor Connector (Power Supply Line)
(1) Turn the power supply off.
With the relay connector disconnected, measure the resistance between UVW phases of the
connector (3 cores) at the motor side, then make sure that the resistance between each phase
is balanced and not short-circuited.
Red
U
White
V
Black
W
Measure the resistance between
each phase.
(S2675)
Troubleshooting
285
Troubleshooting for SkyAir Indoor Unit
Check No. 02
SiEBE18-526
Check for Thermistors
Disconnect the thermistor connector from PCB, then measure the resistance by using a tester.
Unit : kΩ
Thermistor temperature and resistance characteristics
Temperature
°C
-6.0
-4.0
-2.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
A
B
90.8
81.7
73.5
66.3
59.8
54.1
48.9
44.3
40.2
36.5
33.2
30.2
88.0
79.1
71.1
64.1
57.8
52.3
47.3
42.9
38.9
35.3
32.1
29.2
18.0
20.0
22.0
24.0
26.0
28.0
30.0
32.0
34.0
36.0
38.0
40.0
42.0
44.0
46.0
48.0
50.0
52.0
54.0
56.0
58.0
27.5
25.1
23.0
21.0
19.2
17.6
16.2
14.8
13.6
12.5
11.5
10.6
9.8
9.1
8.4
7.8
7.2
6.9
6.2
5.7
5.3
26.6
24.3
22.2
20.3
18.5
17.0
15.6
4.2
13.1
12.0
11.1
10.3
9.5
8.8
8.2
7.6
7.0
6.7
6.0
5.5
5.2
Application
286
z Heat exchanger
(Indoor/Outdoor units)
z Suction air
z Remote controller
z Air
z Outdoor air
z Suction pipe
zRadiator fin
Troubleshooting
SiEBE18-526
Troubleshooting for BP Unit
6. Troubleshooting for BP Unit
6.1
Malfunction of Electronic Expansion Valve
Remote
Controller
Display
A9
Method of
Malfunction
Detection
Detection by checking continuity and lack of connector.
Malfunction
Decision
Conditions
Malfunction is determined by no common voltage applied when turning the power supply on.
Supposed
Causes
„ Faulty harness of electronic expansion valve
„ Incorrect connectors connection of electronic expansion valve
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn the power supply off once
and then back on.
Is malfunction
re-generated?
NO
YES
Is the
electronic
expansion valve coil
connected to PCB
of the faulty
part?
NO
Keep using as it is. (Could
be outside error other than
malfunction.)
Correct the connection.
YES
Is the
resistance of the
electronic expansion
valve coil normal?
(46±4Ω/20°C)
NO
Electronic expansion valve
coil faulty
YES
Replace BP unit PCB of the
applicable part.
(Q0390)
Troubleshooting
287
Troubleshooting for BP Unit
6.2
SiEBE18-526
Faulty BP Unit PCB
Remote
Controller
Display
E2
Method of
Malfunction
Detection
Check data from E²PROM
Malfunction
Decision
Conditions
When data could not be correctly received from the E²PROM
E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power
supply is turned off.
Supposed
Causes
„ Defect of BP unit PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn off the power once and
turn on again.
Return to normal?
NO
YES
External factor other than
malfunction (for example,
noise etc.).
Replace the BP unit PCB.
(Q0391)
288
Troubleshooting
SiEBE18-526
6.3
Troubleshooting for BP Unit
Faulty BP Liquid or Gas Pipe Thermistor
Remote
Controller
Display
J0
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
When the BP liquid or gas pipe temperature sensor became short-circuited or open.
Supposed
Causes
„ Faulty BP liquid or gas pipe temperature sensor
„ Faulty connectors connection of BP liquid or gas pipe temperature sensor
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Disconnect the thermistor
connectors from the
corresponding BP PCB and
measure the resistance of
liquid or gas tube temperature
sensor.
Is the resistance
normal referring to the
table below?
YES
Temp.
-10°C
0°C
10°C
20°C
30°C
40°C
50°C
60°C
70°C
Troubleshooting
NO
Replace thermistor or
thermistor assembly.
If insufficient contact is not
detected, replace the
corresponding PCB.
(Q0392)
Resistance
117kΩ
67kΩ
40kΩ
25kΩ
16kΩ
10kΩ
7kΩ
5kΩ
3kΩ
289
Troubleshooting for BP Unit
6.4
SiEBE18-526
Transmission Error between Indoor Unit and BP Unit
Outdoor Unit
Indication
U4
Method of
Malfunction
Detection
The data received from the BP unit in indoor unit-BP unit signal transmission is checked
whether it is normal.
Malfunction
Decision
Conditions
When the data sent from the BP unit cannot be received normally, or when the content of the
data is abnormal.
Supposed
Causes
„
„
„
„
„
290
Faulty BP unit PCB.
Faulty indoor unit PCB.
Indoor unit-BP unit signal transmission error due to wiring error.
Indoor unit-BP unit signal transmission error due to disturbed power supply waveform.
Indoor unit-BP unit signal transmission error due to breaking of wire in the connection wires
between the indoor and BP units (wire No. 2).
Troubleshooting
SiEBE18-526
Troubleshooting for BP Unit
Troubleshooting
Caution
Check No.14
Refer to P.293
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Push and hold the RESET button on
the outdoor unit PCB for 5 seconds
NO
Does the malfunction
occur again?
Normal
(Address Setting was
not conducted)
YES
Check the indoor unit-outdoor unit
connection wires.
YES
Is there any wiring error?
Correct the indoor
unit-outdoor unit
connection wires.
NO
Is HAP blinking?
NO (ON or OFF)
Turn the power supply off once
and then back on.
Check for
indoor unit
microcomputer
normal HAP
Is HAP blinking?
NO
YES
Faulty indoor unit PCB
or malfunction of power
supply system.
Resets normally.
Could result from
external cause
(e.g. noise).
Check the outdoor unit's LED A.
Is LED A blinking?
NO Turn power supply off, and
turn on again.
YES
Is LED A blinking?
YES
NO
Faulty BP unit PCB or
malfunction of power
supply system.
Could result from
external cause
(e.g. noise).
Check the voltage of the indoor
unit-outdoor unit connection wires
between No. 1 and No. 2, and
between No 2 and No. 3.
Is the voltage 0 V?
YES
NO
Replace the connection
wires between the
indoor and outdoor
units.
Check No. 14
Check power supply waveform.
Is there any disturbance?
YES
NO
Replace indoor unit
control PCB .
Locate the cause of the
disturbance of the power
supply waveform, and
correct it.
(Q0393)
Troubleshooting
291
Troubleshooting for BP Unit
6.5
SiEBE18-526
Transmission Error between Outdoor Unit and BP Unit
Outdoor Unit
Indication
UJ
Method of
Malfunction
Detection
Transmission error is detected when the outdoor unit could not received the data from BP unit
correctly.
Malfunction
Decision
Conditions
When the data from BP unit could not be correctly received continuously for 10 minutes
Supposed
Causes
„
„
„
„
„
Incorrect connection of transmission wire
Faulty outdoor unit power supply
Faulty BP unit PCB
Faulty outdoor unit PCB
Distortion of power supply wave
Troubleshooting
Caution
Check No.14
Refer to P.293
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn the power supply off.
Check the transmission wire
between outdoor unit - BP
unit
NO
Is it normal?
YES
Check the transmission
wire and the connection
orders.
Turn the power supply back
on.
Is HAP
on the outdoor unit PCB
blinking?
NO
Replace outdoor unit
control PCB.
YES
Is UJ displayed?
YES
Could be outside causes
other than errors.
Probe where the noise
comes from, and apply
remedy required.
NO
Check No. 14
Check the power supply
waveform.
Is it deformed?
NO
YES
Probe the causes for
deformation of power
supply waveform and apply
remedy required.
Replace outdoor unit
control PCB.
292
(Q0394)
Troubleshooting
SiEBE18-526
6.6
Troubleshooting for BP Unit
Check
6.6.1 Power Supply Waveforms Check
Check No.14
Measure the power supply waveform between pins 1 and 3 on the terminal board, and check
the waveform disturbance.
„ Check to see if the power supply waveform is a sine wave (Fig.1).
„ Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2)
[Fig.1]
Troubleshooting
[Fig.2]
293
Troubleshooting for Outdoor Unit
SiEBE18-526
7. Troubleshooting for Outdoor Unit
7.1
Faulty Outdoor Unit PCB
Remote
Controller
Display
E1
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Check data from E²PROM
Malfunction
Decision
Conditions
When data could not be correctly received from the E²PROM
E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power
supply is turned off.
Supposed
Causes
„ Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn off the power once and
turn on again.
Return to normal?
NO
YES
External factor other than
malfunction (for example,
noise etc.).
Replace the outdoor unit
main PCB A1P.
(Q0421)
294
Troubleshooting
SiEBE18-526
7.2
Troubleshooting for Outdoor Unit
Actuation of High Pressure Switch
Remote
Controller
Display
E3
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Abnormality is detected when the contact of the high pressure protection switch opens.
Malfunction
Decision
Conditions
Error is generated when the HPS activation count reaches the number specific to the operation
mode.
Supposed
Causes
„
„
„
„
„
Actuation of outdoor unit high pressure switch
Defect of High pressure switch
Defect of outdoor unit PCB
Instantaneous power failure
Faulty high pressure sensor
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are the
HPS connectors
connected to the outdoor main
PCB (A2P)?
H1
YES
Contact S1PH is open.
NO
YES
Connect the connector and
operate again.
Actuation of high pressure switch.
H1
NO
Operation
is normal when turned
on again by remote
control.
YES
NO
There was an instantaneous
power failure or a past safety
device actuated.
Re-check refrigerant system.
Replace outdoor unit PCB A2P.
(Q0422)
H1: Actuation of high pressure switch (HPS)
• Is the outdoor unit heat exchanger dirty?
• Defect of outdoor fan
• Is the refrigerant over-charged?
• Faulty high pressure sensor
Troubleshooting
295
Troubleshooting for Outdoor Unit
7.3
SiEBE18-526
Actuation of Low Pressure Switch
Remote
Controller
Display
Applicable
Models
E4
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Error is generated when the low pressure is dropped under specific pressure.
Supposed
Causes
„
„
„
„
Abnormal drop of low pressure
Defect of low pressure sensor
Defect of outdoor unit PCB
Stop valve is not opened.
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is stop valve opened?
NO
Open stop valve.
YES
Is the malfunction
due to abnormal drop of low
pressure?
YES
Out of gas, refrigerant system
clogging, wiring and piping wrong
connection, stop valve closed,
electronic expantion valve fully
close malfunction.
NO
Measure
the voltage (VL)
of X45A pin No. (2) - (3)
of outdoor PCB (A1P).∗1
Is the relationship
between low
voltage and VL
normal?
∗2
NO
YES
Replace the low pressure sensor.
Replace outdoor unit PCB A1P.
(Q0423)
∗1: Voltage measurement point
Outdoor unit PCB A1P
+5V
GND
Microcomputer
A/D input
4
Red
3
Black
2
White
1
*2 Measure voltage (DC) within this space
Low pressure sensor
X45A
(blue)
(Q0424)
∗2: Refer to pressure sensor, pressure / voltage characteristics table on P328.
296
Troubleshooting
SiEBE18-526
7.4
Troubleshooting for Outdoor Unit
Compressor Motor Lock
Remote
Controller
Display
E5
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Inverter PC board takes the position signal from UVWN line connected between the inverter and
compressor, and detects the position signal pattern.
Malfunction
Decision
Conditions
The position signal with 3 times cycle as imposed frequency is detected when compressor
motor operates normally, but 2 times cycle when compressor motor locks. When the position
signal in 2 times cycle is detected.
Supposed
Causes
„
„
„
„
„
Compressor lock
High differential pressure (0.5MPa or more)
Incorrect UVWN wiring
Faulty inverter PCB
Stop valve is left in closed.
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the installation
conditions.
Is the stop valve open?
NO
Open the stop valve.
YES
Is the UVWN wiring
normal?
YES
Is high
differential pressure
starting? (0.5MPa
or more)
NO
YES
Connect correctly.
Remedy the cause.
NO
Check and see
whether compressor is
short-circuited or
ground.
YES
Replace the compressor.
NO
Are inverter
output voltages the same
for 3 phases?
NO
Replace the inverter PCB
(A2P).
YES
Does low or
high pressure vary
even instantaneously when
restarting
compressor?
NO
YES
Replace the compressor.
(Q0425)
Troubleshooting
297
Troubleshooting for Outdoor Unit
7.5
SiEBE18-526
Malfunction of Outdoor Unit Fan Motor
Remote
Controller
Display
E7
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction of fan motor system is detected according to the fan speed detected by Hall IC
when the fan motor runs.
Malfunction
Decision
Conditions
„ When the fan runs with speed less than a specified one for 14.5 seconds or more when the
fan motor running conditions are met
„ When malfunction is generated 4 times, the system shuts down.
Supposed
Causes
„ Malfunction of fan motor
„ The harness connector between fan motor and PCB is left in disconnected, or faulty
connector
„ Fan does not run due to foreign matters tangled
„ Clearing condition: Operate for 5 minutes (normal)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector
of fan motor is
disconnected.
YES
Connect the connector.
NO
Is there any
obstacle around
the fan?
YES
Remove the obstacle.
NO
Can the fan
be turned smoothly
with hand after disconnect
the connector of
fan motor?
NO
Replace the fan motor of
outdoor unit.
YES
Check No. 9
Check on connector of fan
motor (Power supply cable)
Check No. 11
Check on pulse input of
position signal of fan inverter
PCB
Is the pulse inputted?
NO
Replace the fan motor of
outdoor unit.
YES
Replace outdoor unit PCB.
(Q0385)
298
Troubleshooting
SiEBE18-526
7.6
Troubleshooting for Outdoor Unit
Malfunction of Moving Part of Electronic Expansion
Valve
Remote
Controller
Display
E9
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Check disconnection of connector
Check continuity of expansion valve coil
Malfunction
Decision
Conditions
Error is generated under no common power supply when the power is on.
Supposed
Causes
„ Defect of moving part of electronic expansion valve
„ Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn power supply off, and
turn power supply on again.
Return to normal?
YES
External factor other than
malfunction (for example, noise
etc.).
NO
Electronic
expansion valve is
connected to X26A and
X28A of outdoor unit
PCB
(A1P).
NO
After connecting, turn the power
off and then back on again.
YES
Normal
when coil
check (∗1) of the moving
part of the electronic
expansion valve is
checked.
NO
Replace the moving part of the
electronic expansion valve.
YES
Replace outdoor unit PCB A1P.
(Q0426)
∗1 Coil check method for the moving part of the electronic expansion valve
Disconnect the electronic expansion valve from the PCB and check the continuity between the
connector pins.
Normal condition
Pin No.
1. White
2. Yellow
3. Orange
4. Blue
5. Red
6. Brown
1. White
2. Yellow
×
3. Orange

×
4. Blue
×

×
 : Continuity Approx. 300Ω, {: Continuity Approx. 150Ω,
Troubleshooting
5. Red
{
×
{
×
6. Brown
×
{
×
{
×
×: No continuity
299
Troubleshooting for Outdoor Unit
7.7
SiEBE18-526
Abnormal Discharge Pipe Temperature
Remote
Controller
Display
F3
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Abnormality is detected according to the temperature detected by the discharge pipe
temperature sensor.
Malfunction
Decision
Conditions
„ When the discharge pipe temperature rises to an abnormally high level
„ When the discharge pipe temperature rises suddenly
Supposed
Causes
„ Faulty discharge pipe temperature
„ Faulty connection of discharge pipe thermistor
„ Faulty outdoor unit PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Discharge pipe
temperature is 115°C
or higher.
YES
NO
Are
the characteristics
of the discharge pipe
thermistor normal?
(3.5~400KΩ)
YES
NO
Out of gas, compression defect,
etc. Defect of the refrigerant
system.
Replace the discharge pipe
thermistor.
Replace outdoor unit PCB A1P.
(Q0427)
∗ Refer to thermistor resistance / temperature characteristics table on P326.
300
Troubleshooting
SiEBE18-526
7.8
Troubleshooting for Outdoor Unit
Malfunction of Thermistor for Outdoor Air (R1T)
Remote
Controller
Display
H9
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
The abnormal detection is based on current detected by current sensor.
Malfunction
Decision
Conditions
When the outdoor air temperature sensor has short circuit or open circuit.
Supposed
Causes
„ Defect of thermistor (R1T) for outdoor air
„ Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector is
connected to outdoor
PCB(A1P).
NO
Connect the thermistor and turn
on again.
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R1T) from the outdoor
unit PCB.
(3.5kΩ~
360kΩ)
YES
NO
Replace the thermistor (R1T)
Replace outdoor unit PCB A1P.
(Q0428)
The alarm indicator is displayed when the fan only is being used also.
∗ Refer to thermistor resistance / temperature characteristics table on P326.
Troubleshooting
301
Troubleshooting for Outdoor Unit
7.9
SiEBE18-526
Malfunction of Discharge Pipe Thermistor (R3T)
Remote
Controller
Display
J3
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by discharge pipe temperature
thermistor.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Supposed
Causes
„ Defect of thermistor (R3T) for outdoor unit discharge pipe
„ Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector
is connected to
outdoor unit
PCB
(A1P).
NO
Connect the thermistor and turn
on again.
YES
Resistance
is normal when
measured after
disconnecting the thermistor
R3T from the outdoor
unit PCB.
(3.5kΩ~
400kΩ)
YES
NO
Replace the thermistor (R3T)
Replace outdoor unit PCB A1P.
(Q0429)
∗ Refer to thermistor resistance / temperature characteristics table on P326.
302
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.10 Malfunction of Thermistor (R2T) for Suction Pipe
Remote
Controller
Display
J5
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the suction pipe temperature
thermistor.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the suction pipe temperature thermistor is detected.
Supposed
Causes
„ Defect of thermistor (R2T) for outdoor unit suction pipe
„ Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector
is connected to outdoor
unit PCB.
(A1P)
NO
Connect the thermistor and turn
on again.
YES
Resistance
is normal when
measured after
NO
disconnecting the thermistor
(R2T) from the outdoor
unit PCB.
(3.5kΩ ~
360kΩ)
YES
Replace the thermistor R2T.
Replace outdoor unit PCB A1P.
(Q0430)
∗ Refer to thermistor resistance / temperature characteristics table on P326.
Troubleshooting
303
Troubleshooting for Outdoor Unit
SiEBE18-526
7.11 Malfunction of Thermistor (R4T) for Outdoor Unit Heat
Exchanger
Remote
Controller
Display
J6
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the heat exchanger thermistor.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the heat exchange thermistor is detected.
Supposed
Causes
„ Defect of thermistor (R4T) for outdoor unit heat exchanger
„ Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector
is connected to outdoor
unit PCB
(A1P).
NO
Connect the thermistor and turn
on again.
YES
Resistance
is normal when
measured after
disconnecting the thermistor
R4T from the outdoor
unit PCB.
(3.5kΩ~
360kΩ)
YES
NO
Replace the thermistor R4T.
Replace outdoor unit PCB A1P.
(Q0431)
∗ Refer to thermistor resistance / temperature characteristics table on P326.
304
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.12 Malfunction of Receiver Gas Pipe Thermistor (R5T)
Remote
Controller
Display
J9
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected according to the temperature detected by receiver gas pipe thermistor
(= Subcooling heat exchanger gas pipe thermistor).
Malfunction
Decision
Conditions
When the receiver gas pipe thermistor is short circuited or open.
Supposed
Causes
„ Faulty receiver gas pipe thermistor (R5T)
„ Faulty outdoor unit PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
connector for
receiver gas pipe
thermistor connected to
outdoor unit PCB
(A1P)
NO
Connect thermistor and turn on
again.
YES
Is the
resistance
measured after
removing the thermistor
(R5T) from outdoor unit
PCB normal.
(3.5 kΩ to
360 kΩ)
YES
NO
Replace the thermistor (R5T).
Replace outdoor unit PCB (A1P).
(Q0445)
∗ Refer to thermistor resistance / temperature characteristics table on P326.
Troubleshooting
305
Troubleshooting for Outdoor Unit
SiEBE18-526
7.13 Outdoor Unit: Malfunction of High Pressure Sensor
Remote
Controller
Display
JA
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from the pressure detected by the high pressure sensor.
Malfunction
Decision
Conditions
When the high pressure sensor is short circuit or open circuit.
Supposed
Causes
„ Defect of high pressure sensor
„ Connection of low pressure sensor with wrong connection.
„ Defect of outdoor unit PCB.
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
The high
pressure sensor is
connected to X46A of
outdoor unit PCB
(A1P).
NO
Connect the high pressure sensor
and turn on again.
YES
The
relationship
between the ∗1
VH and high pressure
is normal (see ∗2) when
YES
voltage is measured between
X46A pins (1) and (3) of
outdoor unit PCB
(A1P)
(see ∗1).
Replace outdoor unit PCB A1P.
NO
Replace the high pressure sensor.
(Q0432)
∗1: Voltage measurement point
Outdoor unit PCB A1P
+5V
GND
4
Red
3
Black
2
1
Microcomputer
A/D input
White
High pressure sensor
X46A
*2 Measure DC voltage here.
(Q0433)
∗2: Refer to pressure sensor, pressure / voltage characteristics table on P328.
306
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.14 Malfunction of Low Pressure Sensor
Remote
Controller
Display
JC
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from pressure detected by low pressure sensor.
Malfunction
Decision
Conditions
When the low pressure sensor is short circuit or open circuit.
Supposed
Causes
„ Defect of low pressure sensor
„ Connection of high pressure sensor with wrong connection.
„ Defect of outdoor unit PCB.
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
The low
pressure sensor is
connected to X45A (blue)
of outdoor unit PCB
(A1P).
NO
Connect low pressure sensor
property and restart system.
YES
The
relationship
between the ∗1
VL and low pressure is
normal (see ∗2) when voltage
is measured between X45A pins
(2) and (3) of outdoor unit
PCB (A1P)
(see ∗1).
YES
Replace outdoor unit PCB A1P.
NO
Replace the low pressure sensor.
(Q0434)
∗1: Voltage measurement point
Outdoor unit PCB A1P
+5V
GND
Microcomputer
A/D input
4
Red
3
Black
2
White
Low pressure sensor
X45A
1
*2 Measure voltage here.
(Q0435)
∗2: Refer to pressure sensor, pressure/voltage characteristics table on P328.
Troubleshooting
307
Troubleshooting for Outdoor Unit
SiEBE18-526
7.15 Malfunction of Inverter Radiating Fin Temperature Rise
Remote
Controller
Display
L4
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Fin temperature is detected by the thermistor of the radiation fin.
Malfunction
Decision
Conditions
When the temperature of the inverter radiation fin increases above 99°C.
Supposed
Causes
„ Actuation of fin thermal (Actuates above 99°C)
„ Defect of inverter PCB
„ Defect of fin thermistor
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Temperature
of the radiator fin rises.
Actuates at min.
99 °C
NO
YES
Defect of power unit radiation.
• Intake port is clogged
• Radiator fin is dirty
• Outdoor temperature is high
Measure the resistance of the
radiator fin thermistor.
Resistance
check of the radiator fin
thermistor
Abnormal
Replace the thermistor.
Normal
Is reset possible?
NO
Replace the inverter PCB
YES
Reset and operate.
(Q0436)
∗ Refer to thermistor resistance / temperature characteristics table on P326.
308
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.16 Inverter Compressor Abnormal
Remote
Controller
Display
L5
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from current flowing in the power transistor.
Malfunction
Decision
Conditions
When an excessive current flows in the power transistor.
(Instantaneous overcurrent also causes activation.)
Supposed
Causes
„ Defect of compressor coil (disconnected, defective insulation)
„ Compressor start-up malfunction (mechanical lock)
„ Defect of inverter PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Compressor inspection
The compressor's
coil is disconnected or the
insulation is
defective.
YES
Replace the compressor.
NO
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
Inverter
output
voltage check
Inverter output
voltage is not balanced.
(Normal if within ±5V Must
be measured when
frequency
is stable.
YES
Replace the inverter unit.
NO
There is
instantenious power
drop.
NO
YES
Correct power supply.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
(V2812)
Higher voltage than actual is displayed when the inverter output voltage is checked by tester.
Troubleshooting
309
Troubleshooting for Outdoor Unit
SiEBE18-526
7.17 Inverter Current Abnormal
Remote
Controller
Display
L8
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected by current flowing in the power transistor.
Malfunction
Decision
Conditions
When overload in the compressor is detected.
Supposed
Causes
„ Compressor overload
„ Compressor coil disconnected
„ Defect of inverter PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Output current check
The secondary
current of the inverter is
higher than 24.9A
for each phase.
YES
Compressor overload
Inspection of the compressor and
refrigerant system is required.
NO
Compressor
inspection The
compressor's coil is
disconnected.
YES
Replace the compressor.
NO
Disconnect the the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
Inverter
output
voltage check
Inverter output voltage
is not balanced
(Normal if within ±5V). Must
be measured when
frequency
is stable.
NO
Replace the inverter PCB.
YES
After turning
on again, "L8" blinks
again.
YES
NO
Reset and restart.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
(Q0437)
310
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.18 Inverter Start up Error
Remote
Controller
Display
L9
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from current flowing in the power transistor.
Malfunction
Decision
Conditions
When overload in the compressor is detected during startup
Supposed
Causes
„ Defect of compressor
„ Pressure differential start
„ Defect of inverter PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
The difference
between high and low
pressure when starting
is above
0.2MPa.
NO
Unsatisfactory pressure
equalization
Check refrigerant system.
YES
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode ON by
service mode.
Inverter
output
voltage check
Inverter output voltage
is not balanced.
(Normal if within ±5V) Must
be measured when
frequency
is stable.
NO
Replace the inverter PCB
YES
After turning
on again, "L9" blinks
again.
YES
NO
Reset and restart.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
(Q0438)
Troubleshooting
311
Troubleshooting for Outdoor Unit
SiEBE18-526
7.19 Malfunction of Transmission between Inverter and
Control PCB
Remote
Controller
Display
LC
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Check the communication state between inverter PCB and control PCB by micro-computer.
Malfunction
Decision
Conditions
When the correct communication is not conducted in certain period.
Supposed
Causes
„
„
„
„
„
312
Malfunction of connection between the inverter PCB and outdoor control PCB
Defect of outdoor control PCB (transmission section)
Defect of inverter PCB
Defect of noise filter
External factor (Noise etc.)
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are the
connectors
between the main
PC board (A1P) and
inverter PCB
(A2P) connected
securely?
NO
Connect transmission wiring and
turn on again.
YES
The
transmission
wiring between the
outdoor unit PCB
inverter unit is
disconnected.
YES
Fix the disconnection and turn on
again.
NO
The
microcomputer
monitor (green) on
the inverter PCB
is blinking.
YES
Defect of outdoor main PCB or
defect of inverter PCB.
NO
The voltage
between red and
white of X1A on the inverter
unit is the power supply
voltage.
NO
YES
Replace inverter PCB.
When the LC malfunction occur
again, replace control PCB.
Check the noise filter (Z1F) for
disconnection, and check the
power supply wiring or the inverter
PCB.
(Q0439)
Troubleshooting
313
Troubleshooting for Outdoor Unit
SiEBE18-526
7.20 Malfunction of Inverter Radiating Fin Temperature Rise
Sensor
Remote
Controller
Display
P4
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Resistance of radiation fin thermistor is detected when the compressor is not operating.
Malfunction
Decision
Conditions
When the resistance value of thermistor becomes a value equivalent to open or short circuited
status.
„ Malfunction is not decided while the unit operation is continued.
"P4" will be displayed by pressing the inspection button.
Supposed
Causes
„ Defect of radiator fin temperature sensor
„ Defect of inverter PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Measure the resistance of
radiation fin thermistor.
Is the
resistance of thermistor
correct?
NO
Replace inverter PCB.
YES
Is the resetting possible?
NO
Replace inverter PCB.
YES
After resetting, restart.
(Q0440)
∗ Refer to thermistor resistance / temperature characteristics table on P326.
314
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.21 Faulty Combination of Inverter and Fan Driver
Remote
Controller
Display
PJ
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Check the communication state between inverter PCB and control PCB by micro-computer.
Malfunction
Decision
Conditions
When the communication data about inverter PCB type is incorrect.
Supposed
Causes
„ Mismatching of inverter PCB
„ Faulty field setting
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Was the PCB
replaced?
NO
Replace the PCB.
YES
Is the
PCB type
correct?
NO
Replace PCB by the correct one.
YES
Is the field
setting when
the PCB was
replaced
correct?
NO
Correct field setting.
YES
After resetting, restart.
(Q0441)
∗ Refer to “Field Setting from Outdoor Unit” on P112.
Troubleshooting
315
Troubleshooting for Outdoor Unit
SiEBE18-526
7.22 Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure
Remote
Controller
Display
U0
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Short of gas malfunction is detected by discharge pipe temperature thermistor.
Malfunction
Decision
Conditions
Microcomputer judge and detect if the system is short of refrigerant.
HMalfunction is not decided while the unit operation is continued.
Supposed
Causes
„
„
„
„
Out of gas or refrigerant system clogging (incorrect piping)
Defect of thermistor R2T or R4T
Defect of pressure sensor
Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Cooling
YES
Low pressure
is 0.25 MPa
or less.
NO
NO
The
voltage
of X45A pins (2)
and (3) on main
outdoor unit PCB
(A1P) is 0.8 VDC or less.
(Low pressure
sensor output
voltage)
NO
Ts - Te > 20 °C?
YES
YES
YES
Out of gas, closing of stop
valve or refrigerant system is
clogged.
Replace main outdoor unit
PCB (A1P).
Replace low pressure sensor.
Out of gas or refrigerant
system is clogged. Requires
check of refrigerant system.
NO
Resistance
is normal when
measured with the
suction pipe thermistor
(R2T) and coil thermistor
(R4T) disconnected from
the outdoor unit
PCB.(3.5kΩ
to 360 kΩ)
YES
NO
Replace the thermistor.
Replace the outdoor unit PCB
(A1P).
(Q0387)
316
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.23 Power Supply Insufficient or Instantaneous Failure
Remote
Controller
Display
U2
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
„
„
„
„
„
Power supply insufficient
Instantaneous failure
Defect of inverter PCB
Defect of outdoor control PCB
Main circuit wiring defect
317
Troubleshooting for Outdoor Unit
SiEBE18-526
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is
connection
wire connected
between the connector
X205A and X25A?
NO
Repair wiring.
YES
Turn on again.
Does
the voltage
between terminals P
and N gradually rise to
283VDC after
turning
on?
NO
Replace the inverter PCB.
YES
The
voltage
between the P and N
terminals is 400VDC and
190VDC or more when
the compressor is
running.
NO
Replace the inverter PCB.
YES
Is the
power supply voltage
applied at LB and NB
on the noise filter
PCB?
YES
Replace the inverter PCB.
NO
Is the
power supply voltage
at the connector X1A of
outdoor PCB
side?
NO
Monitor field power
supply.
YES
Check the transmission
wiring between the
outdoor unit PCB and
inverter unit.
(Q0442)
318
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.24 Check Operation not Executed
Remote
Controller
Display
U3
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Check operation is executed or not
Malfunction
Decision
Conditions
Malfunction is decided when the unit starts operation without check operation.
Supposed
Causes
„ Check operation is not executed.
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Has the
check operation
performed on Outdoor
unit PCB?
YES
NO
Press the BS4 on PCB on the
master outdoor unit for 5 seconds
or more to execute check
operation.
Replace the main PCB on the
outdoor unit.
(Q0443)
Troubleshooting
319
Troubleshooting for Outdoor Unit
SiEBE18-526
7.25 Malfunction in other Indoor Unit or other BP Unit
Remote
Controller
Display
Applicable
Models
U9
AII indoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
„ Malfunction of electronic expansion valve in other BP unit
„ Defect of PCB of other indoor unit or other BP unit
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn on all indoor units.
The other
error code than "U9"
display blinks on the
remote controls of other
units within the same
refrigerant
system.
YES
Refer to failure diagnosis for the
malfunction code.
NO
Replace the outdoor unit PCB.
(Q0386)
320
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.26 Mismatching of Indoor Unit, BP Unit and Outdoor Unit
Remote
Controller
Display
Applicable
Models
UA
AII indoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
„ Defect of outdoor unit PCB (A1P)
„ Mismatching of the refrigerant type of indoor and outdoor unit.
„ Setting of outdoor PCB was not conducted after replacing to spare parts PCB.
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Push and hold the RESET
button on the outdoor unit PCB
for 5 seconds.
Does a malfunction occur?
NO
Normal
YES
Does the
refrigerant type of BP
and outdoor unit
match?
YES
NO
Matches the refrigerant type of
indoor BP and outdoor unit.
Replace BP unit PCB or outdoor
unit PCB (A1P).
(Q0402)
∗ The number of indoor units that can be connected to a single outdoor unit system depends on
the type of outdoor unit.
Troubleshooting
321
Troubleshooting for Outdoor Unit
SiEBE18-526
7.27 Refrigerant System not Set, Incompatible Wiring/Piping
UF
Remote
Controller
Display
Applicable
Models
AII BP unit models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
„ Failure to execute wiring check operation
„ Defect of BP unit PCB
„ Failure to open the stop valve
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are the stop
Valves opened?
NO
Open stop valve.
YES
Is Indoor-BP
and BP-outdoor unit
transmission wiring
normal?
Is the
electronic
expansion valve coil
disconnected?
NO
YES
After fixing incorrect wiring,
push and hold the RESET
button on the outdoor unit
PCB for 5 seconds.
∗ The unit will not run for up to
12 minutes.
Correct the electronic
expansion coil.
NO
Retry to test operation
Is "UF" displayed again?
YES
Replace the BP unit PCB.
Test operation may not have
been carried out successfully.
(Q0388)
Note:
322
Test operation may not be successful if carried out after the outdoor unit has been off for more
than 12 hours, or if it is not carried out after running all connected indoor units in the fan mode
for at least an hour.
Troubleshooting
SiEBE18-526
Troubleshooting for Outdoor Unit
7.28 Malfunction of System, Refrigerant System Address
Undefined
Remote
Controller
Display
Applicable
Models
UH
AII indoor unit models
All BP unit models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
„ Defect of indoor unit PCB
„ Defect of BP unit PCB
„ Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is
electricity
being introduce
for the first time after
YES
installationor after an indoor
or outdoor or BP unit
PCB has been
replaced?
NO
Is
indoor - BP and
BP - outdoor unit
transmission wiring
normal?
NO
Normal
YES
NO
YES
Push and hold the RESET
button on the outdoor unit
PCB for 5 seconds
Does a malfunction
occur?
Does
a malfunction
occur even after 12
minutes elapses from the
time when electricity is
introduced to BP
and outdoor
units?
After fixing incorrect wiring,
push and hold the RESET
button on the outdoor unit
PCB for 5 seconds.
∗ The unit will not run for up to
12 minutes.
NO
Normal
YES
Does
a "UH" malfunction occur
for all indoor units in
the system?
YES
NO
Replace BP unit or indoor unit
PCB.
Replace outdoor unit PCB
(A1P).
(Q0389)
Troubleshooting
323
Check
SiEBE18-526
8. Check
Check No. 08
Check No. 09
Check on connector of fan motor (Power supply cable)
(1) Turn off the power supply.
Measure the resistance between phases of U,V,W at the motor side connectors (three-core
wire) to check that the values are balanced and there is no short circuit, while connector or
relay connector is disconnected.
Red
U
White
V
Black
W
Measure the resistance
values between phases
U,V,W.
Check for Fan Motor Connector (Signal Line)
(1) Turn the power supply off.
(2) With the fan motor connector disconnected, measure the resistance between each pin, then
make sure that the resistance is more than the value mentioned in the following table.
1 White
Measurement point
1-4
2-4
3-4
4-7
2 Orange
3 Brown
GND
4 Blue
5
Judgment
1MΩ or more
100kΩ or more
100Ω or more
100kΩ or more
6
7 Red
324
(S2675)
Troubleshooting
SiEBE18-526
Check No. 11
Check
Check for Fan Speed Pulse Input on Outdoor Unit PC Board
(1) Disconnect the connector X206A with the power supply OFF and Operation OFF.
(2) Is the voltage between pins 4 and 3 of X206A about 15 VDC after turning the power supply
on?
(3) Is the voltage between pins 4 and 1 of X206A about 5 VDC?
(4) Connect the connector X206A with the power supply OFF and Operation OFF.
(5) When making one turn of the upper fan motor by hand after turning the power supply on, is a
pulse (0 and 5 V) generated 4 times between pins 4 and 1 of X206A? (Measure at the
contact terminal on the harness side with the connector connected.)
(6) Disconnect the connector X207A with the power supply OFF and Operation OFF.
(7) Is the voltage between pins 4 and 3 of X207A about 15 VDC after turning the power supply
on?
(8) Is the voltage between pins 4 and 1 of X207A about 5 VDC?
(9) Connect the connector X207A with the power supply OFF and Operation OFF.
(10)When making one turn of the lower fan motor by hand after turning the power supply on, is
a pulse (0 and 5 V) generated 4 times between pins 4 and 1 of X207A?
(2) (7): NO → Faulty PCB → Replace the PCB.
(3) (8): NO → Faulty PCB → Replace the PCB.
(5)(10): NO → Faulty Hall IC → Replace the DC fan motor.
(2) (3) (5) (7) (8) (10): YES → Replace the PCB.
1
Fan speed pulse input (0V and 5V)
2
0V
3
15V
4
GND
5
NC
6
NC
7
250~350V(during operation)
(S2679)
Troubleshooting
325
Thermistor Resistance / Temperature Characteristics
SiEBE18-526
9. Thermistor Resistance / Temperature
Characteristics
Indoor unit
For air suction
For liquid pipe
For gas pipe
R1T
R2T
R3T
Outdoor unit For outdoor air
For coil
For suction pipe
For Receiver gas pipe
T°C
-20
-19
-18
-17
-16
-15
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
326
R1T
R2T
R4T
R5T
0.0
197.81
186.53
175.97
166.07
156.80
148.10
139.94
132.28
125.09
118.34
111.99
106.03
100.41
95.14
90.17
85.49
81.08
76.93
73.01
69.32
65.84
62.54
59.43
56.49
53.71
51.09
48.61
46.26
44.05
41.95
39.96
38.08
36.30
34.62
33.02
31.50
30.06
28.70
27.41
26.18
25.01
23.91
22.85
21.85
20.90
20.00
19.14
18.32
17.54
16.80
16.10
0.5
192.08
181.16
170.94
161.36
152.38
143.96
136.05
128.63
121.66
115.12
108.96
103.18
97.73
92.61
87.79
83.25
78.97
74.94
71.14
67.56
64.17
60.96
57.94
55.08
52.38
49.83
47.42
45.14
42.98
40.94
39.01
37.18
35.45
33.81
32.25
30.77
29.37
28.05
26.78
25.59
24.45
23.37
22.35
21.37
20.45
19.56
18.73
17.93
17.17
16.45
15.76
T°C
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
0.0
16.10
15.43
14.79
14.18
13.59
13.04
12.51
12.01
11.52
11.06
10.63
10.21
9.81
9.42
9.06
8.71
8.37
8.05
7.75
7.46
7.18
6.91
6.65
6.41
6.65
6.41
6.18
5.95
5.74
5.14
4.96
4.79
4.62
4.46
4.30
4.16
4.01
3.88
3.75
3.62
3.50
3.38
3.27
3.16
3.06
2.96
2.86
2.77
2.68
2.60
2.51
(kΩ)
0.5
15.76
15.10
14.48
13.88
13.31
12.77
12.25
11.76
11.29
10.84
10.41
10.00
9.61
9.24
8.88
8.54
8.21
7.90
7.60
7.31
7.04
6.78
6.53
6.53
6.53
6.53
6.06
5.84
5.43
5.05
4.87
4.70
4.54
4.38
4.23
4.08
3.94
3.81
3.68
3.56
3.44
3.32
3.21
3.11
3.01
2.91
2.82
2.72
2.64
2.55
2.47
Troubleshooting
SiEBE18-526
Thermistor Resistance / Temperature Characteristics
Outdoor Unit
Thermistors for
Discharge Pipe
(R3T)
T°C
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Troubleshooting
0.0
640.44
609.31
579.96
552.00
525.63
500.66
477.01
454.60
433.37
413.24
394.16
376.05
358.88
342.58
327.10
312.41
298.45
285.18
272.58
260.60
249.00
238.36
228.05
218.24
208.90
200.00
191.53
183.46
175.77
168.44
161.45
154.79
148.43
142.37
136.59
131.06
125.79
120.76
115.95
111.35
106.96
102.76
98.75
94.92
91.25
87.74
84.38
81.16
78.09
75.14
72.32
0.5
624.65
594.43
565.78
538.63
512.97
488.67
465.65
443.84
423.17
403.57
384.98
367.35
350.62
334.74
319.66
305.33
291.73
278.80
266.51
254.72
243.61
233.14
223.08
213.51
204.39
195.71
187.44
179.57
172.06
164.90
158.08
151.57
145.37
139.44
133.79
128.39
123.24
118.32
113.62
109.13
104.84
100.73
96.81
93.06
89.47
86.04
82.75
79.61
76.60
73.71
70.96
T°C
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
0.0
72.32
69.64
67.06
64.60
62.24
59.97
57.80
55.72
53.72
51.98
49.96
48.19
46.49
44.86
43.30
41.79
40.35
38.96
37.63
36.34
35.11
33.92
32.78
31.69
30.63
29.61
28.64
27.69
26.79
25.91
25.07
24.26
23.48
22.73
22.01
21.31
20.63
19.98
19.36
18.75
18.17
17.61
17.07
16.54
16.04
15.55
15.08
14.62
14.18
13.76
13.35
0.5
70.96
68.34
65.82
63.41
61.09
58.87
56.75
54.70
52.84
50.96
49.06
47.33
45.67
44.07
42.54
41.06
39.65
38.29
36.98
35.72
34.51
33.35
32.23
31.15
30.12
29.12
28.16
27.24
26.35
25.49
24.66
23.87
23.10
22.36
21.65
20.97
20.31
19.67
19.05
18.46
17.89
17.34
16.80
16.29
15.79
15.31
14.85
14.40
13.97
13.55
13.15
T°C
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
0.0
13.35
12.95
12.57
12.20
11.84
11.49
11.15
10.83
10.52
10.21
9.92
9.64
9.36
9.10
8.84
8.59
8.35
8.12
7.89
7.68
7.47
7.26
7.06
6.87
6.69
6.51
6.33
6.16
6.00
5.84
5.69
5.54
5.39
5.25
5.12
4.98
4.86
4.73
4.61
4.49
4.38
4.27
4.16
4.06
3.96
3.86
3.76
3.67
3.58
3.49
3.41
(kΩ))
0.5
13.15
12.76
12.38
12.01
11.66
11.32
10.99
10.67
10.36
10.06
9.78
9.50
9.23
8.97
8.71
8.47
8.23
8.01
7.78
7.57
7.36
7.16
6.97
6.78
6.59
6.42
6.25
6.08
5.92
5.76
5.61
5.46
5.32
5.18
5.05
4.92
4.79
4.67
4.55
4.44
4.32
4.22
4.11
4.01
3.91
3.81
3.72
3.62
3.54
3.45
3.37
327
Pressure Sensor
SiEBE18-526
10.Pressure Sensor
PH = 1.38V-0.69
PL = 0.57V-0.28
PH : High pressure (MPa)
VL : Low pressure (MPa)
V : Voltage (V)
Detected Pressure
PH, PL
(kg/cm³) MPa
51.0 5.0
PH : Detected Pressure [High Side] MPa
PL : Detected Pressure [Low Side] MPa
VH : Output Voltage [High Side] VDC
VL : Output Voltage [Low Side] VDC
45.9 4.5
High Pressure (PH)
40.8 4.0
35.7 3.5
30.6 3.0
25.5 2.5
20.4 2.0
Low Pressure (PL)
15.3 1.5
10.2 1.0
5.1 0.5
0
-5.1 -0.5
-0.5
0
0.5
1
1.5
2
Output Voltage (VH, VL)
2.5
3
3.5
4
VDC
(V3053)
328
Troubleshooting
SiEBE18-526
Part 9
Removal Procedure
1. Outdoor Unit........................................................................................330
1.1
1.2
1.3
1.4
1.5
Removal of Outer Panels .....................................................................330
Removal of PCB...................................................................................337
Removal of Solenoid Valve, Four Way Valve and Motorized Valve.....348
Removal of Thermistor Assembly ........................................................349
Removal of Fan Motor..........................................................................350
2. BP Unit ................................................................................................353
2.1 Removal of PCB...................................................................................353
2.2 Removal of Solenoid Valve Coil ...........................................................356
Removal Procedure
329
Outdoor Unit
SiEBE18-526
1. Outdoor Unit
1.1
Removal of Outer Panels
Procedure
Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
1. Appearance.
Top panel
Front panel
Pipe outlet port
(Q0446)
Rear protective net
Outdoor air
thermistor
(Q0447)
330
Removal Procedure
SiEBE18-526
Outdoor Unit
Procedure
Step
2. Removing the rear
protective net
1 Undo the three top
hooks first.
Points
Hooks
Bend the rear protective net
slightly for easy removal.
(Q0448)
2
Next, undo the four
right-side hooks. (See
the figure at bottom.)
(Q0449)
3
Remove the rear
protective net.
Hooks
(Q0450)
Removal Procedure
331
Outdoor Unit
SiEBE18-526
Procedure
Step
Points
3. Removing the top panel
1 Remove the eight
screws.
(Q0451)
2
Lift and remove the top
panel.
(Q0452)
332
Removal Procedure
SiEBE18-526
Outdoor Unit
Procedure
Step
Points
4. Removing the front panel
1 Remove the screw.
2 Pull the front panel
toward yourself.
Screw
(Q0453)
3
There are six hooks on
the front panel. Slide
the front panel
downward to remove it.
(Q0454)
Removal Procedure
333
Outdoor Unit
SiEBE18-526
Procedure
Step
Points
5. Removing the pipe cover
1 Remove the screw.
2 Pull the pipe cover
toward yourself.
Screw
(Q0455)
3
There are three hooks
on the pipe cover. Slide
the pipe cover upward
to remove it.
(Q0456)
334
Removal Procedure
SiEBE18-526
Outdoor Unit
Procedure
Step
Points
6. Right side panel
1 Remove the six screws
off the panel's front.
Screws
(Q0457)
2
Remove the three
screws off the panel's
back and the two
screws off the panel's
side.
Screws
Screws
(Q0458)
3
Remove the right side
panel.
(Q0459)
Removal Procedure
335
Outdoor Unit
SiEBE18-526
Procedure
Step
Points
7. Removing the outdoor air
thermistor
1 Disconnect the outdoor
air thermistor holder.
Unhook the holder from
inside of the right side
panel for easy removal.
(Q0461)
2
The figure shows the
state after
disconnection.
Outdoor air thermistor holder
(Q0460)
336
Removal Procedure
SiEBE18-526
1.2
Outdoor Unit
Removal of PCB
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
1. Removing the control
PCB
1 Detach the two top
locking guard spacers.
2 Remove the drip proof
cover.
Points
Locking guard spacers.
Power filter PCB
Control PCB
Drip proof cover
(Q0462)
3
Disconnect the power
relay connector. (X1A)
X1A
(Q0463)
Removal Procedure
337
Outdoor Unit
SiEBE18-526
Procedure
Step
4
Points
Disconnect the
connectors one by one.
X25A
X34A
X37A
X44A
X45A
X46A
X28A
X26A
X23A
X6A
X22A
X5A
X3A
X2A
X2A Solenoid valve (Hot gas)
X3A Solenoid valve
(Receiver gas purge)
X5A Solenoid valve
(4 way valve)
X6A Crankcase heater
X22A Transformer
X23A Transformer
X25A Connector for [X250A]
X26A Electronic expansion
valve(Main)
X28A Electronic expansion
valve(Sub cool)
X34A Discharge pipe thermistor
X37A Heat exchanger
thermistor
X44 Air thermistor
X45A Pressure sensor (Low)
X46A Pressure sensor (High)
(Q0464)
5
6
Detach the sixteen
locking guard spacers.
Remove the control
PCB.
Preferably use long nose pliers
in removing the locking guard
spacers.
(Q0466)
(Q0465)
2. Removing the control
PCB mounting plate
1 Remove the two
screws.
Screws
(Q0467)
338
Removal Procedure
SiEBE18-526
Outdoor Unit
Procedure
Step
2
3
Points
Open the mounting
plate's right side toward
yourself.
Remove the two
TYRAP fixtures from
behind the mounting
plate.
TYRAP fixtures
(Q0468)
4
Disconnect the
connectors from the
power filter PCB and
cut off the TYRAP
fixtures.
Ground
NA
LA
X1A
Ground, Power terminals NA
(white) / LA (red) / X1A (black)
The TYRAP fixture is to be kept
in stock.
(Q0469)
5
Lift the mounting plate
and undo the two left
side hooks to remove it.
Hooks
(Q0470)
Removal Procedure
339
Outdoor Unit
SiEBE18-526
Procedure
Step
Points
3. Removing the power filter
PCB
1 Cut off the two top
TYRAP fixtures and
remove the drip proof
cover.
TYRAP fixtures
Power filter PCB
Drip proof cover
(Q0472)
Cut off with nippers.
The TYRAP fixture is to be kept
in stock.
(Q0471)
2
3
4
Tilt up the compressor's
sound proof cover.
Remove the terminal
cover.
Disconnect the
compressor lead
connector (terminal).
Using long nose pliers, pull out
the following.
Sound proof cover
U: Red
V: White
W: Blue
N: Brown
Terminal
N
W
U
V
Terminal cover
(Q0473)
340
Removal Procedure
SiEBE18-526
Procedure
Step
5
Outdoor Unit
Points
Release the
compressor lead out of
the groove.
(Q0474)
6
Remove the two
TYRAP fixtures.
Cut off with nippers.
(Q0475)
Removal Procedure
341
Outdoor Unit
SiEBE18-526
Procedure
Step
7
Points
Remove the screws of
the reactor leads.
Screws
8
(Q0476)
Remove the screw.
Screw
(Q0477)
9
The power filter PCB is
provided with two
hooks. Slide the PCB to
the right to unhook it.
<Rear view>
Hooks
(Q0478)
342
Removal Procedure
SiEBE18-526
Outdoor Unit
Procedure
Step
Points
4. Removing the electrical
assembly
1 Remove the TYRAP
fixture.
Cut off with nippers.
The TYRAP fixture is to be kept
in stock.
(Q0479)
2
Lift the electrical
assembly to unhook it.
Hooks
Electrical
assembly
Partition plate
Hook holes
Removal Procedure
(Q0480)
343
Outdoor Unit
SiEBE18-526
Procedure
Step
Points
(Q0481)
3
Disconnect the fan
motor relay connector.
pcs.: Red and white
(Q0482)
344
Removal Procedure
SiEBE18-526
Procedure
Step
4
5
Outdoor Unit
Points
Disconnect the HPS
connector and the
electrical box connector
from each other.
Remove the TYRAP
fixture and unbind the
leads.
HPS connector: Red
Electrical box connector: White
Cut off with nippers.
The TYRAP fixture is to be kept
in stock.
(Q0483)
6
7
Remove the TYRAP
fixture (reactor lead).
Remove the screw.
Cut off with nippers.
(Q0484)
8
9
Remove the TYRAP
fixture (reactor lead).
Remove the two clamps
and disconnect the
compressor lead.
Cut off with nippers.
(Q0485)
Removal Procedure
345
Outdoor Unit
Procedure
Step
10
SiEBE18-526
Points
Disconnect the fan
motor electrical box
relay connector.
Connector X206A: Red
Connector X207A: White
(Q0486)
5. Removing the inverter
PCB
1 Separate the power
filter PCB mounting
plate from the electrical
assembly.
There are two hooks. Slide the
plate to unhook it.
Hooks
(Q0487)
2
Remove the reactor
connectors P1 and P2.
P1: White, P2: White
Inverter PCB
346
(Q0488)
Removal Procedure
SiEBE18-526
Procedure
Step
3
Outdoor Unit
Points
Remove the screw and
detach the inverter
PCB.
(Q0489)
4
There are two hooks at
the far side (condenser
side). When
reassembling, catch
these hooks first.
Hooks
(Q0490)
Removal Procedure
347
Outdoor Unit
1.3
SiEBE18-526
Removal of Solenoid Valve, Four Way Valve and
Motorized Valve
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
1. Removing the solenoid
valve coil, motorized valve
coil and four way valve
coil
1 Remove the solenoid
valve and four way
valve.
2 Remove the motorized
valve.
Points
Remove the screw.
Solenoid valve
Four way
valve
Motorized
valve.
(Q0492)
Use two open end wrenches for
disassembling.
Solenoid
valve
(Q0491)
348
(Q0493)
Removal Procedure
SiEBE18-526
1.4
Outdoor Unit
Removal of Thermistor Assembly
Procedure
Step
1. Removing the thermistors
1 Remove the under cool
thermistor.
2 Remove the suction
pipe thermistor.
3 Remove the discharge
pipe thermistor.
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
Under cool
thermistor
Suction pipe
thermistor
Discharge pipe
thermistor
(Q0494)
Removal Procedure
349
Outdoor Unit
1.5
SiEBE18-526
Removal of Fan Motor
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
Points
1. Removing the front cover
1 Remove the seven
screws.
(Q0495)
2
Slide up the front cover
to unhook and detach it.
(Q0496)
350
Removal Procedure
SiEBE18-526
Outdoor Unit
Procedure
Step
Points
2. Removing the propeller
fan
1 Remove the nut and
detach the propeller
fan.
(Q0497)
2
Disconnect the fan
motor lead's relay
connector.
Relay
connector
(Q0498)
Removal Procedure
351
Outdoor Unit
Procedure
Step
3
SiEBE18-526
Points
Open the fan motor
lead fixture.
When reassembling, make sure
the lead wires are fastened by
the fixtures.
(Q0499)
4
Remove the four
screws and take out the
fan motor.
Remove the two bottom screws
first. If the top two screws are
removed first, the fan motor may
tilt down or fall by gravity,
getting you injured.
(Q0500)
352
Removal Procedure
SiEBE18-526
BP Unit
2. BP Unit
2.1
Removal of PCB
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
Points
1. Removing the PCB.
1 Remove the four
screws from the
electrical box cover.
Detach the cover.
(Q0501)
2
The PCB is as shown at
right. Disconnect all the
relay cables.
The PCB is coated resistant to
moisture. This means that the
fuse and varistor cannot be
replaced.
When reassembling, have test
operation for checking wrong
wiring.
(Q0502)
X90A
WHT
X2A
WHT
H1P
H2P
H3P
H4P
H5P
DS2
X3M
X22A
BLU
X21A
RED
X20A
WHT
X7A
WHT
X6M
X4M
E1
X5M
LEDA
LED1
LED2
LED3
LED4
X23A
YLW
X1M
F2U
(Q0503)
Removal Procedure
353
BP Unit
Procedure
Step
3
SiEBE18-526
Points
Disconnect the solenoid
valve connector and the
thermistor connector.
(Q0504)
4
Remove the screw off
the wire harness band.
(Q0505)
5
Remove the screw off
the grounding lug.
(Q0506)
354
Removal Procedure
SiEBE18-526
Procedure
Step
6
BP Unit
Points
Disconnect the Faston
terminal of the
grounding cable.
(Q0507)
7
Remove the two screws
and take out the PCB.
(Q0508)
Removal Procedure
355
BP Unit
2.2
SiEBE18-526
Removal of Solenoid Valve Coil
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
Points
1. Removing the PCB.
1 Remove the legged
TYRAP fixture from the
wire harness.
Preparations
Take the steps for removing the
PCB.
Press the fixture between your
fingers to unhook.
(Q0509)
2
Remove the four
screws off the electrical
box mounting plate. Lift
the plate up to detach it.
3
Remove the four
screws off the bottom
plate.
(Q0510)
(Q0511)
356
Removal Procedure
SiEBE18-526
Procedure
Step
4
BP Unit
Remove the sealing
compound (1) of the
pipe insulation sleeves.
Points
The sealing compound (1) is a
servicing part.
Sealing compound (1)
(Q0512)
(Q0513)
5
Remove the putty.
(Q0514)
6
Cut off the TYRAP
fixture.
The TYRAP fixture is to be kept in
stock.
TYRAP fixture
(Q0515)
Removal Procedure
357
BP Unit
Step
SiEBE18-526
Procedure
Points
The TYRAP fixture is to be kept
in stock.
TYRAP fixtures
(Q0516)
358
Removal Procedure
SiEBE18-526
Part 10
Appendix
1. Piping Diagrams..................................................................................360
1.1 Outdoor Units .......................................................................................360
1.2 BP Units ...............................................................................................361
1.3 Indoor Units ..........................................................................................362
2. Wiring Diagrams..................................................................................367
2.1 Outdoor Units .......................................................................................367
2.2 BP Units ...............................................................................................368
2.3 Indoor Units ..........................................................................................369
Appendix
359
Piping Diagrams
SiEBE18-526
1. Piping Diagrams
1.1
Outdoor Units
RMXS112/140/160D7V3B
Four way
valve
Service port
High pressure
SP
sensor
Pressure
regulating valve
Oil
separator
Heat exchanger
Filter
Filter
SV
HPS
Capillary
tube
Solenoid
valve
High pressure
switch
Low pressure
sensor
SP
Compressor
Check
valve
Check
valve
Filter
Electronic
expansion valve
Check
valve
Electronic
expansion valve
Check
valve
Solenoid
valve
Receiver
SV
Filter
Filter
Double pipe
heat exchanger
Heat
exchanger pipe
Filter
Stop valve (With service port on field piping side φ7. 9mm flare connection)
3D048787A
360
Appendix
Piping Diagrams
SiEBE18-526
1.2
BP Units
BPMKS967A2B, BPMKS967B2B
INDOOR UNIT
GAS SIDE
THERMISTOR (DGA)
REFRIGERANT FLOW
ROOM A
(15.9CuT)
HEATING
COOLING
GAS SIDE
THERMISTOR (DGB)
ROOM B
(15.9CuT)
GAS
ELECTRONIC
EXPANSION VALVE (BYPASS)
FILTER
EVH
ELECTRONIC
EXPANSION VALVE (ROOM A)
EVA FILTER
LIQUID SIDE
THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE (ROOM B)
EVB FILTER
LIQUID SIDE
THERMISTOR(DLB)
INDOOR UNIT
OUTDOOR UNIT
(19.1CuT)
OUTDOOR UNIT
(9.5CuT)
ROOM A
(6.4CuT)
LIQUID
ROOM B
(6.4CuT)
FILTER
3D048286
BPMKS967A3B, BPMKS967B3B
INDOOR UNIT
GAS SIDE
THERMISTOR (DGA)
GAS SIDE
THERMISTOR (DGB)
REFRIGERANT FLOW
ROOM A
(15.9CuT)
ROOM B
(15.9CuT)
HEATING
COOLING
GAS SIDE
THERMISTOR (DGC)
GAS
ROOM C
(15.9CuT)
ELECTRONIC
EXPANSION VALVE (BYPASS)
FILTER
EVH
ELECTRONIC
EXPANSION VALVE (ROOM A)
EVA FILTER
INDOOR UNIT
LIQUID SIDE
THERMISTOR(DLA)
ELECTRONIC
EXPANSION VALVE (ROOM B)
LIQUID SIDE
EVB FILTER THERMISTOR(DLB)
OUTDOOR UNIT
(19.1CuT)
ELECTRONIC
EXPANSION VALVE (ROOM C)
EVC
OUTDOOR UNIT
(9.5CuT)
FILTER
LIQUID SIDE
THERMISTOR(DLC)
ROOM A
(6.4CuT)
ROOM B
(6.4CuT)
LIQUID
ROOM C
(6.4CuT)
FILTER
3D048285
Appendix
361
Piping Diagrams
1.3
SiEBE18-526
Indoor Units
1.3.1 Wall Mounted Type
FTXS20/25/35D(2)VMW(L)(9)
FTXS20/25/35DA(3)VMW(L)(7)
CTXS50D(2)VMW(L)
INDOOR UNIT
INDOOR UNIT
MAFFLER ASSY
HEAT EXCHANGER
7.0CuT
MAFFLER ASSY
HEAT EXCHANGER
7.0CuT
6.4CuT
6.4CuT
6.4CuT
7.9CuT
7.9CuT
THERMISTOR
ON HEAT EXCH.
6.4CuT
CROSS FLOW FAN
FIELD PIPING
(6.4CuT)
6.4CuT
6.4CuT
CROSS FLOW FAN
FIELD PIPING
(6.4CuT)
M
FAN MOTOR
M
FAN MOTOR
9.5CuT
FIELD PIPING
THERMISTOR
ON HEAT EXCH.
9.5CuT
FIELD PIPING
(9.5CuT)
(9.5CuT)
REFRIGERANT FLOW
COOLING
HEATING
REFRIGERANT FLOW
COOLING
HEATING
4D047913A
4D047912A
FTXS20/25/35CVMB(9)(8)
FTXS20/25/35CAVMB
FTXS50/60BVMB
INDOOR UNIT
INDOOR UNIT
HEAT EXCHANGER
7.0CuT
(7.9CuT)
7.9CuT
6.4CuT
THERMISTOR
ON HEAT EXCH.
HEAT EXCHANGER
6.4CuT
6.4CuT
FIELD PIPING
(6.4CuT)
THERMISTOR
ON HEAT
EXCH.
CROSS FLOW FAN
FIELD PIPING
(6.4CuT)
M
FAN MOTOR
FIELD PIPING
(9.5CuT)
FIELD PIPING
(12.7CuT)
9.5CuT
M
FAN MOTOR
(12.7CuT)
REFRIGERANT FLOW
COOLING
HEATING
REFRIGERANT FLOW
COOLING
HEATING
4D049319
362
CROSS FLOW FAN
4D040081J
Appendix
Piping Diagrams
SiEBE18-526
FTXS71BVMB
INDOOR UNIT
(7.9CuT)
HEAT EXCHANGER
THERMISTOR
ON HEAT
EXCH.
FIELD PIPING
(6.4CuT)
FIELD PIPING
(15.9CuT)
CROSS FLOW FAN
M
FAN MOTOR
(12.7CuT)
REFRIGERANT FLOW
COOLING
HEATING
4D040082H
1.3.2 Duct Connected Type
FDXS25/35CVMB, FDXS25/35CAVMB, CDXS50/60CVMB
INDOOR UNIT
(6.4CuT)
HEAT EXCHANGER
FIELD PIPING
(6.4CuT)
SIROCCO FAN
THERMISTOR
ON HEAT
EXCH.
M
FAN MOTOR
FIELD PIPING
(
CuT)
(
CuT)
CDXS25CVMB
CDKS25CVMB
CDXS35CVMB
CDKS35CVMB
CDXS25CVMA
CDXS35CVMA
FDXS25CVMB
FDXS35CVMB
FDKS25CVMB
FDKS35CVMB
CDXS50CVMB
CDKS50CVMB
CDXS60CVMB
CDKS60CVMB
CDXS50CVMA
CDXS60CVMA
9.5
12.7
REFRIGERANT FLOW
COOLING
HEATING
4D045449B
Appendix
363
Piping Diagrams
SiEBE18-526
1.3.3 Floor / Ceiling Suspended Dual Type
FLXS25/35BVMB, FLXS25/35BAVMB
FLXS50/60BVMB, FLXS50/60BAVMB
INDOOR UNIT
INDOOR UNIT
(9.5CuT)
(6.4CuT)
HEAT EXCHANGER
HEAT EXCHANGER
FIELD PIPING
(6.4CuT)
SIROCCO FAN
THERMISTOR
ON HEAT
EXCH.
FIELD PIPING
(6.4CuT)
M
M
FIELD PIPING
(9.5CuT)
FAN MOTOR
FAN MOTOR
(9.5CuT)
FIELD PIPING
(12.7CuT)
REFRIGERANT FLOW
COOLING
HEATING
(12.7CuT)
REFRIGERANT FLOW
COOLING
HEATING
4D048722
364
SIROCCO FAN
THERMISTOR
ON HEAT
EXCH.
4D048724
Appendix
Piping Diagrams
SiEBE18-526
1.3.4 Floor Standing Type
FVXS25/35BVMB, FVXS25/35BAVMB
INDOOR UNIT
HEAT EXCHANGER
7.9CuT
M
CROSS FLOW FAN
THERMISTOR
ON HEAT EXCH.
FAN MOTOR
7.0CuT
M
CROSS FLOW FAN
7.0CuT
FAN MOTOR
FIELD PIPING
(6.4CuT)
SINGLE UNION JOINT
9.5CuT
FIELD PIPING
(9.5CuT)
SINGLE UNION JOINT
REFRIGERANT FLOW
COOLING
HEATING
4D034714B
FVXS50BVMB, FVXS50BAVMB
INDOOR UNIT
MUFFLER
7.0CuT
4.8CuT
HEAT EXCHANGER
9.5CuT
4.8CuT
M
CROSS FLOW FAN
FAN MOTOR
THERMISTOR
ON HEAT EXCH.
MUFFLER
M
FIELD PIPING
CROSS FLOW FAN
7.0CuT
7.0CuT
FAN MOTOR
7.0CuT
(6.4CuT)
FIELD PIPING
9.5CuT
(12.7CuT)
REFRIGERANT FLOW
COOLING
HEATING
4D020911C
Appendix
365
Piping Diagrams
SiEBE18-526
1.3.5 Ceiling Mounted Cassette Type
FFQ25/35/50/60B7V1B
Indoor heat exchanger
MODEL
FFQ25 · 35B7V1B
6.4
9.5
FFQ50 · 60B7V1B
6.4
12.7
Field piping φ
C1220T-O
Field piping φ
C1220T-O
To
Outdoor unit
Indoor unit
C : 4D039335
1.3.6 Ceiling Suspended Type
FHQ35/50/60BUV1B9
Indoor heat exchanger
Field piping φ
C1220T-0
Field piping φ
C1220T-0
To
Outdoor unit
Indoor unit
MODEL
FHQ35BUV1B
FCQ35BVE
FHQ50 · 60BUV1B
FCQ50 · 60BVE
FBQ60BV1, FBQ60BVL
FUQ71, 100, 125BUV1B
FHQ71, 100, 125BUV1B
FAQ71, 100BUV1B
FXUQ70, 100, 125MV1
FHQ71, 100, 125BAV3B
FCQ71, 100, 125, 140DV3B
FCQ71BVE
FBQ71BV1, FBQ71BVL
6.4
9.5
6.4
12.7
9.5
15.9
4D037995E
366
Appendix
Wiring Diagrams
SiEBE18-526
2. Wiring Diagrams
2.1
Outdoor Units
RMXS112/140/160D7V3B
POWER SUPPLY
230V~50Hz
X1M L N
N
L
GRN / YLW
BLU
LA
NA
A1P
X1A
RED
X2A
LB
NB
RED
BLU
LC
NC
P1
X3A
PS
R1
L1R
HAP
K2R
Y1S
Y2S
R3T
+
P2
-
1
+
-
V1T
t°
P<
S1PH
X60A
V2R
P3
+
C3
+ C1
R2
C2
+
YLW
P4
X34A
1
X1M
C/H SELECTOR
A
B
C
K5R
X37A
V
N
W
Z2C
U
THE ENTRANCE
OF WIRE
N
Z1C
W
Z3C
RED
RED
WHT
WHT
RED
WHT(RED MARKING)
WHT
WHT
N=5
RED WHT BLU BRN
U
V
M1C
t° R1T
S1NPL
S1NPH
X28A
6
Y1E
M
6
Y2E
M
TO BP UNIT TO OUT/D UNIT
F1 F2 F1 F2
A3P
X207A
X206A
A2P
THE POSITION OF
COMPRESSOR
TERMINAL
T1R
X6A HAP H2P H4P H6P
H1P H3P H5P H7P X44A
BS1 BS2 BS3 BS4 BS5
X45A
DS1
ON
E1HC
X46A
Y3S
OFF
1 234
R2T R4T R5T ON DS2
X26A
OFF
t°
t°
t°
1 234
X5A
V1R
U
X24A
NOTE: 4
-
+
X205A
X25A
K4R
K2R
BLU
Z1F
K1M
X23A
t°
F1U
E1
X22A
X1A
K1R
A3P
RED
V W
MS
3~
N
M1F MS
3~
COOL
HEAT
S2S
COOL
HEAT
NOTE: 8
BP UNIT
(F1)(F2)
S1S
FAN
C/H SELECTOR (OPTIONAL ACCESSORY)
A1P
A
L1R
A2P
VIEW A
X1M
X1M
FRONT
M2F MS
3~
NOTES: 1. THIS WIRING DIAGRAM IS APPLIED ONLY TO THE OUTDOOR UNIT.
2.
: FIELD WIRING.
3.
: TERMINAL STRIP
,
: MOVABLE CONNECTOR
: FIXED CONNECTOR
: TERMINAL :
PROTECTIVE EARTH (SCREW)
: NOISELESS EARTH
4. WHEN USING THE OPTION ADAPTOR, REFER TO THE INSTALLATION MANUAL.
5. REFER TO "OPERATION CAUTION LABEL" (ON BACK OF FRONT PLATE), HOW TO USE BS1~BS5 AND DS1 · 2SWITCH.
6. WHEN OPERATING, DON'T SHORT CIRCUIT FOR PROTECTION DEVICE. (S1PH)
7. COLORS BLU : BLUE BRN : BROWN GRN : GREEN RED : RED WHT : WHITE YLW : YELLOW.
8. REFER TO THE INSTALLATION MANUAL, FOR CONNECTION WIRING TO BP UNIT-OUTDOOR TRANSMISSION F1 · F2.
A1P
A2P
A3P
BS~15
N-BLU
L-RED
PRINTED CIRCUIT BOARD (MAIN)
PRINTED CIRCUIT BOARD (INV)
PRINTED CIRCUIT BOARD (NOISE FILTER)
PUSH BUTTON SWITCH
(MODE, SET, RETURN, TEST, RESET)
C1, 2, 3
DS1, 2
E1HC
F1U
H1P~7P
CAPACITOR
DIP SWITCH
CRANKCASE HEATER
FUSE( T 6.3A/250V)
PILOT LAMP(SERVICE MONITOR-ORANGE)
[H2P]PREPARE, TEST------------FLICKERING
MALFUNCTION DETECTION---LIGHT UP
HAP
HAP
K1M
K2R
K1R
K2R
K4R
K5R
L1R
M1C
M1F
M2F
PS
R1
R2
R1T
R2T
R3T
R4T
R5T
S1NPH
S1NPL
S1PH
T1R
V1R,V2R
V1T
X1M
X1M
Y1E
Y2E
Y1S
Y2S
Y3S
Z1C~3C
Z1F
PILOT LAMP(SERVICE MONITOR-GREEN)(A1P)
PILOT LAMP(SERVICE MONITOR-GREEN)(A2P)
MAGNETIC CONTACTOR (M1C)
MAGNETIC RELAY (K1M)
MAGNETIC RELAY (Y1S)
MAGNETIC RELAY (Y2S)
MAGNETIC RELAY (Y3S)
MAGNETIC RELAY (E1HC)
S1S
S2S
Appendix
REACTOR
MOTOR (COMPRESSOR)
MOTOR (FAN)
MOTOR (FAN)
SWITCHING POWER SUPPLY
RESISTOR (CURRENT LIMITING)
RESISTOR (CURRENT SENSOR)
THERMISTOR (AIR)
THERMISTOR (SUCTION)
THERMISTOR (M1C DISCHARGE)
THERMISTOR (HEAT EXC. DEICER)
THERMISTOR (HEAT EXC. OUTLET)
PRESSURE SENSOR (HIGH)
PRESSURE SENSOR (LOW)
PRESSURE SWITCH (HIGH)
TRANSFORMER (230V/24V)
POWER MODULE(A2P)
IGBT (A2P)
TERMINAL STRIP (POWER SUPPLY)
TERMINAL STRIP (CONTROL) (A1P)
ELECTRONIC EXPANSION VALVE (MAIN)
ELECTRONIC EXPANSION VALVE (SUB COOL)
SOLENOID VALVE (HOT GAS)
SOLENOID VALVE(RECEIVER GAS PURGE)
SOLENOID VALVE(4 WAY VALVE)
NOISE FILTER (FERRITE CORE)
NOISE FILTER (WITH SURGE ABSORBER)
C/H SELECTOR (KRC19-26A)
SELECTOR SWITCH (FAN/COOL · HEAT)
SELECTOR SWITCH (COOL/HEAT)
3D048790
367
Wiring Diagrams
2.2
SiEBE18-526
BP Units
BPMKS967A2B, BPMKS967B2B
R1T R2T R3T R4T
(DLA) (DGA) (DLB) (DGB)
t°
t°
t°
BLK
BLK
BLK
BLK
BLU
BLU
BLU
BLU
t°
FIELD WIRING
OFF
1
2 DS2
3
4
12
6
X22A
(BLU)
1
6
X21A
(RED)
1
6
X20A
(WHT)
1
1
X90A
(WHT)
X6M
X3M
INDOOR
ROOM A
1
1
2
2
3
3
X4M
INDOOR
ROOM B
1
1
2
2
3
3
TRANSMISSION
CIRCUIT
H1P
LEDA
H2P
LED1
H3P
LED2
H4P
LED3
H5P
LED4
F2U
3.15A
RED
BLU
YLW
RED
BLU
YLW
RED
BLU
YLW
BRW
ORG
WHT
BRW
ORG
WHT
BRW
ORG
WHT
Y3E
M
Y1E
M BYPASS
FOR TRANSMISSION
TO OUTDOOR (F1·F2)
OR OTHER BP UNIT
F2
TRANSMISSION
CIRCUIT
T201R
ROOM B
Y2E
M ROOM A
F1
X1M
N2
N1
TO OTHER BP UNIT
L1
L2
N
N1
L
L1
POWER SUPPLY
230V~50Hz
E1
PCB
GRN/YLW
X20A~X22A, X90A : CONNECTOR
PCB
: PRINTED CIRCUIT BOARD
F2U
: FUSE
H1P~H5P : PILOT LAMP
R1T~R4T : THERMISTOR
DS2
: DIP SWITCH
T201R
: TRANSFORMAR
X1M, X3M, X4M, X6M : TERMINAL STRIP
Y1E~Y3E
: MOTOR OPERATED VALVE COIL
3D048565A
BPMKS967A3B, BPMKS967B3B
R1T R2T R3T R4T R5T R6T
(DLA) (DGA) (DLB) (DGB) (DLC) (DGC)
YLW
t°
YLW
BLU
YLW
t°
YLW
t°
BLU
BLK
BLU
BLK
BLK
BLK
t°
BLU
t°
t°
FIELD WIRING
OFF
1
2 DS2
3
4
12
X22A
(BLU)
X3M
INDOOR
ROOM A
1
1
2
2
3
3
X4M
INDOOR
ROOM B
1
1
2
2
3
3
X5M
INDOOR
ROOM C
1
1
2
2
3
3
TRANSMISSION
CIRCUIT
X23A
(YLW)
H1P
H2P
LEDA
LED1
H3P
H4P
LED2
LED3
H5P
LED4
X21A
(RED)
1
X90A
(WHT)
F2U
3.15A
TRANSMISSION
CIRCUIT
X20A
(WHT)
6
RED
BLU
1
6
YLW
RED
BLU
1
6
YLW
RED
BLU
1
6
YLW
RED
BLU
1
YLW
BRW
ORG
WHT
BRW
ORG
Y3E
M ROOM B
WHT
BRW
ORG
Y2E
M ROOM A
WHT
BRW
ORG
Y1E
M BYPASS
WHT
X6M
F2
T201R
Y4E
M ROOM C
F1
FOR TRANSMISSION
TO OUTDOOR (F1·F2)
OR OTHER BP UNIT
X1M
N2
L2
TRANSMISSION
CIRCUIT
PCB
N1
L1
E1
N1
TO OTHER BP UNIT
L1
N
L
POWER SUPPLY
230V~50Hz
GRN/YLW
X20A~X23A, X90A : CONNECTOR
PCB
: PRINTED CIRCUIT BOARD
F2U
: FUSE
368
H1P~H5P : PILOT LAMP
R1T~R6T : THERMISTOR
DS2
: DIP SWITCH
T201R
: TRANSFORMAR
X1M, X3M~X6M : TERMINAL STRIP
Y1E~Y4E
: MOTOR OPERATED VALVE COIL
3D048566
Appendix
Wiring Diagrams
SiEBE18-526
2.3
Indoor Units
2.3.1 Wall Mounted Type
FTXS20/25/35D(2)VMW(L)(9), FTXS20/25/35DA(3)VMW(L)(7), CTXS50D(2)VMW(L)
FIELD WIRING.
S27 S26
PCB3
LED1
H1P
LED2
H2P
LED3
H3P
PCB1
H1
F1U
~
~
RECTIFIER
L1
3.15A
V1
H2
H3
TRANSMISSION
CIRCUIT
1
2
3
X1M
BLK 1
WHT 2
RED 3
GRN
/YLW
FG
S1W
S1
7
S21
t°
HA
R1T
PCB4
1
S36 S35
S28
S29
SIGNAL
RECEIVER
INFRARED
REMOTE
CONTROL
M1F
S32 1 S6 5
t°
PCB2
M
RED
ORG
YLW
PNK
BLU
INTELLIGENT EYE
SENSOR
RED
BLU
BRN
ORG
WHT
R2T
INDOOR
M
M1S
OUTDOOR
CAUTION
NOTE THAT OPERATION WILL
RESTART AUTOMATICALLY IF
THE MAIN POWER SUPPLY IS
TURNED OFF AND THEN BACK
ON AGAIN.
FG
: FRAME GROUND
F1U
: FUSE
H1P~H3P
: PILOT LAMP
M1F
: FAN MOTOR
M1S
: SWING MOTOR
PCB1~PCB4 : PRINTED CIRCUIT BOARD
R1T, R2T
: THERMISTOR
S1~S38
: CONNECTOR
S1W
: OPERATION SWITCH
X1M
: TERMINAL STRIP
L1
: COIL
: PROTECTIVE EARTH
3D047523
FTXS20/25/35CVMB(9)(8), FTXS20/25/35CAVMB
PCB3
S36
S35
PCB1
H1
Fu
3.15A
INTELLIGENTEYE SENSOR
S27
PCB2
S26
(
TERMINAL FOR
CENTRALIZED CONTROL
H2
)
C70
LED1 LED2 LED3
S21
H1P H2P H3P
S1W
SIGNAL
RECEIVER
S7
S32
1
M
M1S
FIELD WIRING.
NOTE THAT OPERATION WILL
RESTART AUTOMATICALLY IF
THE MAIN POWER SUPPLY IS
TURNED OFF AND THEN BACK
ON AGAIN.
t°
140°C
M1F
INFRARED
REMOTE
CONTROL
/ YLW
outdoor
CAUTION
R1T
R2T
GRN
TRANSMISSION H3
CIRCUIT
S1
M
S6
BLK
WHT
RED
1
2
→
3
X1M
1
2
3
indoor
: PROTECTIVE EARTH
C70 : RUNNING CAPACITOR
FU : FUSE
H1P~H3P
: PILOT LAMP
M1F
: FAN MOTOR
M1S
: SWING MOTOR
PCB1~PCB3 : PRINTED CIRCUIT BOARD
R1T~R2T
: THERMISTOR
S1~S36
: CONNECTOR
S1W
: OPERATION SWITCH
X1M
: TERMINAL STRIP
3D033599E
Appendix
369
Wiring Diagrams
SiEBE18-526
FTXS50BVMB
FIELD WIRING.
PCB3
S27
S26
PCB1
1
H1
~
~
RECTIFIER
Fu
3.15A
H2
t°
R1T
S38
X1M
BLK
1
WHT
RED
GRN
/ YLW
H3
TRANSMISSION
CIRCUIT
S21
OUTDOOR
3
CAUTION
NOTE THAT OPERATION WILL
RESTART AUTOMATICALLY IF
THE MAIN POWER SUPPLY IS
TURNED OFF AND THEN BACK
ON AGAIN.
S1
7
3
2
FG
PCB4
S37
2
RED
LED1 LED2 LED3
BLU
BRN
ORG
WHT
H1P H2P H3P
1
S35
INTELLIGENT EYE
SENSOR
S28
PCB2
t°
SIGNAL
RECEIVER
INFRARED
REMOTE
CONTROL
1
S32
S29
S6
5
1
S8
M1F
6
BRN
RED
ORG
YLW
PNK
BLU
S36
RED
ORG
YLW
PNK
BLU
PCB5
M
INDOOR
R2T
M
M
S1W
M2S
M1S
FG
: FRAME GROUND
Fu
: FUSE
H1~H3
: HARNESS
H1P~H3P : PILOT LAMP
M1F
: FAN MOTOR
M1S, M2S : SWING MOTOR
PCB1~PCB5 : PRINTED CIRCUIT BOARD
R1T, R2T : THERMISTOR
S1~S38
: CONNECTOR
S1W
: OPERATION SWITCH
X1M
: TERMINAL STRIP
: PROTECTIVE EARTH
3D038065G
FTXS60/71BVMB
FIELD WIRING.
PCB3
S27
S26
PCB1
H1
~
~
RECTIFIER
1
Fu
3.15A
H2
t°
R1T
S38
2
BLK
1
3
WHT
2
RED 3
GRN
/
YLW
H3
TRANSMISSION
CIRCUIT
X1M
FG
PCB4
S37
S21
7
S1
RED
OUTDOOR
CAUTION
NOTE THAT OPERATION WILL
RESTART AUTOMATICALLY IF
THE MAIN POWER SUPPLY IS
TURNED OFF AND THEN BACK
ON AGAIN.
LED1 LED2 LED3
BLU
BRN
ORG
WHT
H2P H3P
S36
1
S35
INTELLIGENT EYE
SENSOR
S28
PCB2
SIGNAL
RECEIVER
INFRARED
REMOTE
CONTROL
S1W
S32
t°
S29
1
S6
5
1
S8
M
M1F
6
BRN
RED
ORG
YLW
PNK
BLU
PCB5
RED
ORG
YLW
PNK
BLU
H1P
INDOOR
R2T
M
M1S
M
M2S
FG
Fu
H1 ~ H3
H1P ~ H3P
M1F
M1S, M2S
PCB1~ PCB5
R1T, R2T
S1 ~ S38
S1W
X1M
: FRAME GROUND
: FUSE
: HARNESS
: PILOT LAMP
: FAN MOTOR
: SWING MOTOR
: PRINTED CIRCUIT BOARD
: THERMISTOR
: CONNECTOR
: OPERATION SWITCH
: TERMINAL STRIP
: PROTECTIVE EARTH
3D038530J
370
Appendix
Wiring Diagrams
SiEBE18-526
2.3.2 Duct Connected Type
FDXS25/35CVMB, FDXS25/35CAVMB, CDXS50/60CVMB
X1M
PCB1
PCB2
H1
F1U
3.15A
V1TR
LED LED LED S1
1
H1P H2P H3P
S26
1
SIGNAL
RECEIVER
10
2 RTH11
H3
3
6
S21
1
TRANSMISSION
CIRCUIT
S7
1
10
2 S32 1
YLW
3
C1
t°
M
1~
PPL
Q1M
130°C
indoor
BLU
R2T
INFRARED
REMOTE
CONTROL
RED
M1F
: PROTECTIVE EARTH
C1 : CAPACITOR(M1F)
F1U : FUSE
1
2
3
outdoor
/
GRN /YLW
FIELD WIRING.
CAUTION
NOTE THAT OPERATION WILL
RESTART AUTOMATICALLY IF
THE MAIN POWER SUPPLY IS
TURNED OFF AND THEN BACK
ON AGAIN.
GND
BLK
RED
GRY
BRN BRN
R1T
2
3
S1
WHT
t°
1
WHT
GRN YLW
N=2
H2
TERMINAL FOR
( CENTRALIZED
CONTROL )
S1W
Z1C
BLK
H1P ~H3P
: PILOT LAMP
M1F
: FAN MOTOR
PCB1 ~PCB2 : PRINTED CIRCUIT BOARD
Q1M
: THERMAL PROTECTOR (M1F EMBEDDED)
R1T ~R2T
: THERMISTOR
S1 ~S32, RTH1 : CONNECTOR
S1W
: OPERATION SWITCH
V1TR
: PHASE CONTROL CIRCUIT
X1M
: TERMINAL BLOCK
Z1C
: NOISE FILTER (FERRITE CORE)
3D045012C
2.3.3 Floor / Ceiling Suspended Dual Type
FLXS25/35/50/60BVMB, FLXS25/35/50/60BAVMB
PCB3
S25
PCB1
S24
S37
PCB2
S36
LED LED LED
H1P H2P H3P
H2
PCB4
C70
S1W
TRANSMISSION H3
CIRCUIT
HA
SIGNAL
RECEIVER
S27
S26
S7
S21
S31
S32
t°
t°
R1T
R2T
H4
H5
BLK
WHT
RED
GRN/
YLW
X1M
1
2
3
1
2
3
→
outdoor
FIELD WIRING.
CAUTION
H6
indoor
S6
NOTE THAT OPERATION WILL
RESTART AUTOMATICALLY IF
THE MAIN POWER SUPPLY IS
TURNED OFF AND THEN BACK
ON AGAIN.
X11A
X21A
M
M
INFRARED
REMOTE
CONTROL
H1
Fu
3.15A
M1S
1~
t°
100°C
M1F
: PROTECTIVE EARTH
C70
: RUNNING CAPACITOR
FU
: FUSE
H1P~H3P : PILOT LAMP
M1F
: FAN MOTOR
M1S
: SWING MOTOR
PCB1~PCB4
R1T~R2T
S6~S37, X11A, X21A
S1W
X1M
: PRINTED CIRCUIT BOARD
: THERMISTOR
: CONNECTOR
: OPERATION SWITCH (SW7)
: TERMINAL STRIP
3D033909D
Appendix
371
Wiring Diagrams
SiEBE18-526
2.3.4 Floor Standing Type
FVXS25/35/50BVMB, FVXS25/35/50BAVMB
PCB3
S26
TRANSMISSION
CIRCUIT
PCB2
INFRARED
REMOTE
CONTROL
3.15A
H1
FU
H2
S25
S2W(4)
S4W
BLK
WHT
RED
GRN/
YLW
H3
S8
S201
S202
S203
S204
S301
S43
PCB1
FG
S23
H1P H2P H3P
S1W
SIGNAL
RECEIVER
S6
M1S
S21
HA
M
S41
M2S
M
L1S
indoor
S302
S31
S32
outdoor
FIELD WIRING.
S7
PCB4
S24
1
2→
3
X1M
1
2
3
M
M1F
(UPPER FAN MOTOR)
M
M2F
(LOWER FAN MOTOR)
S44
: PROTECTIVE EARTH
FU
: FUSE
H1P, H2P, H3P : PILOT LAMP
L1S
: LIMIT SWITCH
M1F, M2F
: FAN MOTOR
M1S
: SWING MOTOR
M2S
: LOWER AIR OUTLET MOTOR
PCB1~PCB4 : PRINTED CIRCUIT BOARD
R1T, R2T
: THERMISTOR
S6~S302
: CONNECTOR
S1W
: OPERATION SWITCH
S2W(4)
: UPWARD AIR FLOW LIMIT SWITCH
S4W
: AIR OUTLET SELECTION SWITCH
X1M
: TERMINAL STRIP
S42
R1T
R2T
3D034713B
372
Appendix
Wiring Diagrams
SiEBE18-526
2.3.5 Ceiling Mounted Cassette Type
R2T
t°
t°
YLW
WHT
X19A
X18A
X17A
t°
A1P
YLW
X24A
NOTE: 3
X61A
X10A
X60A
T1R
t°
X11A
KPR
V1TR
GRN
NE
NOTE: 5 WIRED
REMOTE
CONTROL
F2
SS1
F1
P2
P2
P1 R1T
P1
X5A X1M
C1
X20A
WHT
IN CASE OF SIMULTANEOUS
OPERATION SYSTEM
INDOOR UNIT INDOOR UNIT
(MASTER)
(SLAVE)
TO OUTDOOR X2M
F1U
1 BLK
UNIT
1
1
2 WHT
2
2
3
3
3
RED
GRN/YLW X27A
X2M
X2M
H05VV-U4G2.5
REMOTE
A1P A3P
A4P
CONTROL
SS1
H1P
H2P BS1
SS2
H3P
X24A
X2A
H4P
NOTE: 3
X1A
X1A
RECEIVER/DISPLAY UNIT
: CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS.
: CONNECTER COLOUR FOR COMPONENTS.
: CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD.
R3T
R1T
YLW
TO OUTDOOR UNIT
FFQ25/35/50/60B7V1B
RED
X25A
RC
TC
NOTES:
X40A
1.
: TERMINAL
CONNECTOR
:
: FIELD WIRING,
2. IN CASE USING CENTRAL REMOTE CONTROL, CONNECT IT TO THE UNIT IN
ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL.
3. X24A IS CONNECTED WHEN THE WIRELESS REMOTE CONTROL KIT IS
BEING USED.
4. REMOTE CONTROL MODEL VARIES ACCORDING TO THE COMBINATION SYSTEM,
CONFIRM ENGINEERING MATERIALS AND CATALOGS, ETC. BEFORE CONNECTING.
5. GROUND THE SHIELD OF THE REMOTE CONTROL CORD TO THE INDOOR UNIT(IN CASE OF USING SHIELD WIRE).
6. SYMBOLS SHOW AS FOLLOWS: RED: RED BLK: BLACK WHT: WHITE YLW: YELLOW PRP: PURPLE GRY: GRAY BLU: BLUE
YLW
YLW
M
~
BLK
M
~
M1P
MSW
X36A
X33A
X35A
Q1M
M1F
M1S
HAP
X15A
S1L
C1
T1R
X1M
A1P
X2M
CONTROL BOX
A1P
C1
F1U
HAP
PRINTED CIRCUIT BOARD
CAPACITOR(M1F)
FUSE(F5A 250V)
LIGHT EMITTING DIODE
(SERVICE MONITOR GREEN)
KPR MAGNETIC RELAY(M1P)
M1F MOTOR(INDOOR FAN)
M1P MOTOR(DRAIN PUMP)
M1S MOTOR(SWING FLAP)
Q1M THERMO SWITCH(M1F EMBEDDED)
R1T THERMISTOR(AIR)
R2T THERMISTOR(COIL-1)
R3T THERMISTOR(COIL-2)
S1L FLOAT SWITCH
T1R TRANSFORMER(220-240V/22V)
V1TR PHASE CONTROL CIRCUIT
X1M TERMINAL STRIP
X2M TERMINAL STRIP
RC
SIGNAL RECEIVER CIRCUIT
SIGNAL TRANSMISSION CIRCUIT
TC
WIRED REMOTE CONTROL
R1T THERMISTOR(AIR)
SS1 SELECTOR SWITCH(MAIN/SUB)
INFRARED REMOTE CONTROL
(RECEIVER/DISPLAY UNIT)
A3P PRINTED CIRCUIT BOARD
A4P PRINTED CIRCUIT BOARD
Appendix
PUSH BUTTON(ON/OFF)
LIGHT EMITTING DIODE
(ON-RED)
H2P LIGHT EMITTING DIODE
(TIMER-GREEN)
H3P LIGHT EMITTING DIODE
(FILTER SIGN-RED)
H4P LIGHT EMITTING DIODE
(DEFROST-ORANGE)
SS1 SELECTOR SWITCH
(MAIN/SUB)
SS2 SELECTOR SWITCH
(WIRELESS ADDRESS SET)
CONNECTOR FOR OPTIONAL PARTS
X33A CONNECTOR
(ADAPTOR FOR WIRING)
X35A CONNECTOR
(GROUP CONTROL ADAPTOR)
X40A CONNECTOR
(ON/OFF INPUT FROM OUTSIDE)
X60A CONNECTOR
X61A (INTERFACE ADAPTOR
FOR SKYAIR SERIES)
BS1
H1P
3D038357B
373
Wiring Diagrams
SiEBE18-526
2.3.6 Ceiling Suspended Type
FHQ35/50/60BUV1B9
1
2
3
1
2
3
X2M
X2M
R2T
t°
t°
t°
A1P
F1U
TO OUTDOOR X2M
1
BLK
UNIT
2 WHT
3 RED
X19A
X18A
,
SS1
REMOTE
CONTROL
: TERMINAL
1.
A3P
SS2
X24A
NOTE:4
: CONNECTOR
X2A
YLW
X17A
X10A T1R X11A
t°
X60A
PRINTED CIRCUIT BOARD
CAPACITOR(M1F)
FUSE(F5A 250V)
LIGHT EMITTING DIODE
(SERVICE MONITOR GREEN)
KAR MAGNETIC RELAY(M1S)
KPR MAGNETIC RELAY(M1P)
M1F MOTOR(INDOOR FAN)
M1S MOTOR(SWING FLAP)
Q1M THERMO SWITCH(M1F EMBEDDED)
R1T THERMISTOR(AIR)
R2T THERMISTOR(COIL-1)
R3T THERMISTOR(COIL-2)
S1Q LIMIT SWITCH(SWING FLAP)
T1R TRANSFORMER(220-240V/22V)
V1TR PHASE CONTROL CIRCUIT
X1M TERMINAL BLOCK
X2M TERMINAL BLOCK
RC SIGNAL RECEIVER CIRCUIT
TC SIGNAL TRANSMISSION CIRCUIT
WIRED REMOTE CONTROL
R1T THERMISTOR(AIR)
SS1 SELECTOR SWITCH(MAIN/SUB)
INFRARED REMOTE CONTROL
(RECEIVER/DISPLAY UNIT)
A3P PRINTED CIRCUIT BOARD
A4P PRINTED CIRCUIT BOARD
374
X26A
V1TR
H1P
H2P BS1
H3P
H4P
X1A
X1A
RECEIVER/DISPLAY UNIT
X5A
X1M
P2
P1
GRY
PRP
BLU
KPR
A4P
X20A
SS1
P2
P1 R1T
WIRED REMOTE
CONTROL
C1
RED
X25A NOTE)6
RC
M
~
BLK
KAR X29A
TC
2.
: FIELD WIRING
3. IN CASE USING CENTRAL REMOTE CONTROL, CONNECT IT TO THE
X40A
X33A
UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL.
4. X24A IS CONNECTED WHEN THE INFRARED REMOTE CONTROL KIT IS
BEING USED.
5. REMOTE CONTROL MODEL VARIES ACCORDING TO THE COMBINATION SYSTEM,
CONFIRM ENGINEERING MATERIALS AND CATALOGS, ETC. BEFORE CONNECTING.
6. IN CASE INSTALLING THE DRAIN PUMP(M1P), REMOVE THE JUMPER CONNECTOR OF X15A AND EXECUTE
THE ADDITIONAL WIRING FOR FLOAT SWITCH AND DRAIN PUMP.
7. SYMBOLS SHOW AS FOLLOWS: RED: RED BLK: BLACK WHT: WHITE YLW: YELLOW PRP: PURPLE GRY: GRAY BLU: BLUE
A1P
C1
F1U
HAP
X24A
NOTE: 4
X61A
X27A
A1P
YLW
WHT
H05VV-U4G2.5
NOTES:
: CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS.
: CONNECTER COLOUR FOR COMPONENTS.
: CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD.
R3T
YLW
INDOOR UNIT INDOOR UNIT
(MASTER)
(SLAVE)
R1T
WHT
TO OUTDOOR UNIT
IN CASE OF SIMULTANEOUS
OPERATION SYSTEM
BLK
MSW
~
M1S
BLK
X35A HAP
X14A
X15A
Q1M
M1F
S1Q
NOTE: 6
A1P
C1 T1R
X1M
X2M
CONTROL BOX
PUSH BUTTON(ON/OFF)
LIGHT EMITTING DIODE
(ON-RED)
H2P LIGHT EMITTING DIODE
(TIMER-GREEN)
H3P LIGHT EMITTING DIODE
(FILTER SIGN-RED)
H4P LIGHT EMITTING DIODE
(DEFROST-ORANGE)
SS1 SELECTOR SWITCH
(MAIN/SUB)
SS2 SELECTOR SWITCH
(WIRELESS ADDRESS SET)
CONNECTOR FOR OPTIONAL PARTS
X15A CONNECTOR(FLOAT SWITCH)
X25A CONNECTOR(DRAIN PUMP)
X33A CONNECTOR
(ADAPTOR FOR WIRING)
X35A CONNECTOR
(GROUP CONTROL ADAPTOR)
X40A CONNECTOR
(ON/OFF INPUT FROM OUTSIDE)
X60A CONNECTOR
X61A (INTERFACE ADAPTOR
FOR SKYAIR SERIES)
BS1
H1P
3D037842C
Appendix
SiEBE18-526
Index
A
A1 .................................................................257, 268
A3 .........................................................................269
A5 .........................................................................258
A6 .................................................260, 261, 272, 273
A7 .........................................................................275
A9 .........................................................................287
abnormal discharge pipe temperature .................300
actuation of high pressure switch .........................295
actuation of low pressure switch ..........................296
address setting jumper .............25, 27, 29, 31, 32, 35
adjusting the air flow direction ..............................170
AF .........................................................................271
air purifying filter .....................................................91
air purifying filter with photocatalytic deodorizing
function ...........................................................92
AJ .........................................................................277
ARC433A .............................................................245
AUTO · DRY · COOL · HEAT · FAN operation .....168
automatic air flow control .......................................81
automatic operation ................................................83
auto-restart .............................................................25
auto-restart function .......................................92, 101
auto-swing ..............................................................80
B
BP unit command conversion ................................75
BP unit control ........................................................75
BP unit motorized valve control ..............................76
BS1 ........................................................................20
BS5 ........................................................................20
buzzer PCB ............................................................30
C
C4 .................................................................263, 278
C5 .........................................................................279
C7 .........................................................................264
C9 .................................................................263, 280
care and cleaning .................................................194
centralized control ..........................25, 27, 29, 31, 32
centralized group No. setting ...............................136
check
check for fan motor connector (signal line) ....324
check for fan speed pulse input on outdoor unit
pc board ............................................325
check on connector of fan motor
(power supply cable) .........................324
fan motor connector output check .........265, 285
Hall IC check .................................................267
limit switch continuity check ...........................265
power supply waveforms check .............267, 293
thermistor resistance check ...................266, 286
check for fan motor connector (signal line) ..........324
check for fan speed pulse input on outdoor unit
pc board ........................................................325
Index
check on connector of fan motor
(power supply cable) .................................... 324
check operation ........................................... 109, 127
check operation not executed ............................. 319
CJ ........................................................................ 281
compressor motor lock ........................................ 297
compressor PI control ........................................... 56
condensation avoidance control (FHQ only) ......... 96
control PCB ......................................... 28, 31, 33, 37
control PCB (indoor unit) ................................. 26, 30
cool/heat mode switching .................................... 118
cooling operation fan control ................................. 60
D
defrosting operation .............................................. 64
demand operation ......................................... 74, 120
dew condensation prevention control .................... 73
dew prevention fan control .................................. 104
diagnosis mode ................................................... 246
discharge pipe protection control .......................... 70
display PCB ................................... 26, 30, 31, 34, 37
drain pump control ................................................ 96
DS1 ....................................................................... 20
E
E1 ........................................................................ 294
E2 ........................................................................ 288
E3 ........................................................................ 295
E4 ........................................................................ 296
E5 ........................................................................ 297
E7 ........................................................................ 298
E9 ........................................................................ 299
econo mode .......................................................... 86
econo operation .................................................. 182
electric function parts ............................................ 94
electronic expansion valve PI control .................... 59
error codes
A1 ......................................................... 257, 268
A3 ................................................................. 269
A5 ................................................................. 258
A6 ......................................... 260, 261, 272, 273
A7 ................................................................. 275
A9 ................................................................. 287
AF ................................................................. 271
AJ .................................................................. 277
C4 ......................................................... 263, 278
C5 ................................................................. 279
C7 ................................................................. 264
C9 ......................................................... 263, 280
CJ ................................................................. 281
E1 ................................................................. 294
E2 ................................................................. 288
E3 ................................................................. 295
E4 ................................................................. 296
E5 ................................................................. 297
i
SiEBE18-526
E7 ..................................................................298
E9 ..................................................................299
F3 ..................................................................300
H9 ..................................................................301
J0 ...................................................................289
J3 ...................................................................302
J5 ...................................................................303
J6 ...................................................................304
J9 ...................................................................305
JA ..................................................................306
JC ..................................................................307
L4 ...................................................................308
L5 ...................................................................309
L8 ...................................................................310
L9 ...................................................................311
LC ..................................................................312
P4 ..................................................................314
PJ ..................................................................315
U0 ..................................................................316
U2 ..................................................................317
U3 ..................................................................319
U4 ..................................................................290
U5 ..................................................................282
U8 ..................................................................283
U9 ..................................................................320
UA ..........................................................284, 321
UF ..................................................................322
UH .................................................................323
UJ ..................................................................292
error codes and LED indication
indoor unit ......................................................252
system ...........................................................252
F
F1 ...........................................................................24
F1U ........................................................................23
F2 ...........................................................................24
F2U ........................................................................24
F3 .........................................................................300
fan and flap operations .........................................102
fan motor ..............................................................350
fan motor connector output check ................265, 285
fan motor or related abnormality
DC motor .......................................................261
AC motor .......................................................260
fan speed control ....................................................81
fan speed setting ......................25, 27, 29, 31, 32, 35
faulty BP liquid pipe thermistor .............................289
faulty BP unit PCB ................................................288
faulty combination of inverter and fan driver ........315
faulty outdoor unit PCB ........................................294
field setting
wired remote controller ..................................129
wireless remote controller ..............................130
field setting from outdoor unit ...............................112
forced fan on ........................................................137
forced operation ON/OFF switch ............................25
four way valve ......................................................348
freeze-up protection control .............................72, 95
freeze-up protection control or
high pressure control ....................................258
ii
FU ......................................................................... 35
FU1 ............................................... 25, 27, 29, 31, 32
function outline ...................................................... 93
functional parts layout ........................................... 47
functions .................................................................. 2
fuse ............................................... 25, 27, 29, 31, 35
G
GND ...................................................................... 23
H
H1P ................................................................. 20, 24
H2P ....................................................................... 24
H3P ....................................................................... 24
H4P ....................................................................... 24
H5P ....................................................................... 24
H7P ....................................................................... 20
H9 ........................................................................ 301
HA ................................................................... 25, 29
Hall IC ................................................... 81, 260, 261
Hall IC check ....................................................... 267
HAP ........................................................... 20, 38, 40
heat exchanger isothermal control
in heating operation ........................................ 79
heat exchanger thermistor
troubleshooting (indoor unit) ................. 278, 279
heating operation prohibition ................................. 74
high pressure protection control ............................ 67
HOME LEAVE operation ............................... 89, 183
hot start function .................................................... 91
I
individual setting .................................................. 137
indoor unit fan motor lock .................................... 272
indoor unit PCB abnormality ....................... 257, 268
initial setting contents .......................................... 130
inspection/test button .......................................... 248
instruction ............................................................ 143
INTELLIGENT EYE ............................................... 87
INTELLIGENT EYE operation ............................. 185
INTELLIGENT EYE sensor ................................. 140
INTELLIGENT EYE sensor PCB ............... 26, 28, 30
inverter compressor abnormal ............................. 309
inverter current abnormal .................................... 310
inverter POWERFUL operation ............................. 90
inverter protection control ...................................... 71
inverter start up error ........................................... 311
J
J0 ........................................................................ 289
J3 ........................................................................ 302
J4 ........................................................................ 139
J5 ........................................................................ 303
J6 ........................................................................ 304
J9 ........................................................................ 305
JA ............................ 25, 27, 29, 31, 32, 35, 139, 306
JB .................................... 25, 27, 29, 31, 32, 35, 139
JC ............................ 25, 27, 29, 31, 32, 35, 139, 307
jumper setting ...................................................... 139
Index
SiEBE18-526
L
L1 ...........................................................................24
L2 ...........................................................................24
L4 .........................................................................308
L5 .........................................................................309
L8 .........................................................................310
L9 .........................................................................311
LA ...........................................................................23
LB ...........................................................................23
LC ...................................................................22, 312
LED A .......................................25, 27, 29, 31, 32, 35
LED1 ..............................................25, 27, 29, 31, 32
LED11 ....................................................................35
LED12 ....................................................................35
LED14 ....................................................................35
LED2 ..............................................25, 27, 29, 31, 32
LED3 ..............................................25, 27, 29, 31, 32
limit switch continuity check .................................265
local setting
air flow direction .............................................132
fan off .............................................................132
fan speed changeover ...................................133
filter sign ........................................................132
list of mode No. ..............................................131
range of air flow direction ..............................132
wireless remote controller ..............................133
low noise operation ..............................................120
low pressure drop due to refrigerant shortage or
electronic expansion valve failure .................316
low pressure protection control ..............................69
M
main/sub switch (SS1) .........................................133
maintenance mode setting
forced fan on ..................................................137
individual setting ............................................137
malfunction hysteresis ...................................137
sensor data display ........................................137
unit No. change .............................................137
malfunction code indication by outdoor unit PCB
......................................................................253
malfunction hysteresis ..........................................137
malfunction in other indoor unit or other bp unit ...320
malfunction of capacity setting .............................277
malfunction of discharge pipe thermistor .............302
malfunction of drain system .................................271
malfunction of drain water level system ...............269
malfunction of electronic expansion valve ............287
malfunction of field setting switch .........................284
malfunction of heat exchanger thermistor (R2T) ..278
malfunction of heat exchanger thermistor (R3T) ..279
malfunction of high pressure sensor ....................306
malfunction of indoor unit fan motor .....................273
malfunction of inverter radiating fin temperature rise
......................................................................308
malfunction of inverter radiating fin temperature rise
sensor ...........................................................314
malfunction of low pressure sensor ......................307
malfunction of moving part of electronic expansion
valve ..............................................................299
malfunction of outdoor unit fan motor ...................298
Index
malfunction of receiver gas pipe
thermistor (R5T) ........................................... 305
malfunction of remote controller thermistor ......... 281
malfunction of suction air thermistor .................... 280
malfunction of system,
refrigerant system address undefined .......... 323
malfunction of thermistor (R2T)
for suction pipe ............................................. 303
malfunction of thermistor (R4T) for outdoor unit heat
exchanger .................................................... 304
malfunction of thermistor for outdoor air (R1T) ... 301
malfunction of transmission between inverter and
control PCB .................................................. 312
mismatching of indoor unit, bp unit and
outdoor unit .................................................. 321
mode conflict ....................................................... 103
mold proof air filter ................................................ 92
motorized valve ................................................... 348
multi system ........................................................ 193
multiple settings .................................................. 134
N
N1 .......................................................................... 24
NA ......................................................................... 23
names of parts .................................................... 147
NB ......................................................................... 23
NC ......................................................................... 22
night set mode ....................................................... 85
normal operation ................................................... 55
O
oil return operation ................................................ 62
ON/OFF button on Indoor unit ............................... 91
operation lamp .................................................... 241
operation mode ..................................................... 54
outdoor unit identification function ......................... 96
outdoor unit PCB layout ...................................... 111
OUTDOOR UNIT SILENT operation ................... 181
outer panels ........................................................ 330
P
P4 ........................................................................ 314
PCB ............................................................. 337, 353
photocatalytic deodorizing filter ............................. 91
piping diagrams ................................................... 360
PJ ........................................................................ 315
power failure recovery
function ............................. 25, 27, 29, 31, 32, 35
power supply insufficient or
instantaneous failure .................................... 317
power supply PCB ........................................... 33, 36
power supply waveforms check .................. 267, 293
power-airflow dual flaps ........................................ 80
POWERFUL operation ........................................ 180
preparation before operation ............................... 165
pressure equalization prior to startup .................... 66
pressure sensor .................................................. 328
printed circuit board (PCB)
buzzer PCB ..................................................... 30
control PCB ................................... 28, 31, 33, 37
control PCB (indoor unit) .......................... 26, 30
iii
SiEBE18-526
display PCB .............................26, 30, 31, 34, 37
INTELLIGENT EYE sensor PCB .........26, 28, 30
power supply PCB .....................................33, 36
signal receiver PCB .................26, 28, 30, 34, 37
printed circuit board connector wiring diagram ......20
program dry operation function ............................101
programme dry function .........................................82
protection control ....................................................67
pump-down residual operation ...............................65
R
refrigerant circuit ....................................................44
refrigerant flow for each operation mode ...............48
refrigerant recovery mode ....................................126
refrigerant system not set,
incompatible wiring/piping .............................322
remote controller ..................................................245
remote controller thermistor .................................281
remote controller thermostat ................................100
restart standby .......................................................65
RTH1 ....................................................25, 27, 29, 31
S
S1 .........................................................25, 27, 29, 31
S201 .......................................................................35
S202 .......................................................................35
S203 .......................................................................35
S204 .......................................................................35
S21 ...........................................25, 27, 29, 31, 32, 35
S23 .........................................................................35
S24 ...................................................................32, 35
S25 ...................................................................32, 35
S26 ...........................................25, 27, 29, 31, 32, 35
S27 .......................................................25, 27, 29, 32
S28 ...................................................................25, 29
S29 ...................................................................25, 29
S301 .......................................................................35
S302 .......................................................................35
S31 ...................................................................32, 35
S32 ...........................................25, 27, 29, 31, 32, 35
S35 .............................................................25, 27, 29
S36 .......................................................25, 27, 29, 32
S37 ...................................................................29, 32
S38 .........................................................................29
S6 ...................................................25, 27, 29, 32, 35
S7 .........................................................27, 31, 32, 35
S8 .....................................................................29, 35
safety precautions ................................................145
SC control in heating operation ..............................79
self-diagnosis by wired remote controller .............249
self-diagnosis by wireless remote controller ........250
self-diagnosis digital display ...................................92
sensor data display ..............................................137
service check function ..........................................245
setting by dip switches .........................................112
setting by pushbutton switches ............................113
SH control in cooling operation ..............................78
shutter drive motor /
shutter limit switch abnormality .....................264
signal receiver PCB ........................26, 28, 30, 34, 37
signal receiving sign ...............................................91
iv
solenoid valve ..................................................... 348
solenoid valve coil ............................................... 356
specifications ........................................................... 8
startup control ....................................................... 61
stopping operation ................................................. 66
suction air thermistor ........................................... 280
SW1 .............................................. 25, 29, 31, 32, 35
SW2 ................................................................ 32, 35
SW4 ...................................................................... 35
SW7 ...................................................................... 27
swing flap motor malfunction / lock ..................... 275
T
test operation
procedure and outline ................................... 106
test operation from the remote controller ............ 138
thermistor
indoor heat exchanger,
troubleshooting ....................... 278, 279
remote controller ........................................... 281
suction air ..................................................... 280
thermistor assembly ............................................ 349
thermistor or related abnormality (indoor unit) .... 263
thermistor resistance /
temperature characteristics .......................... 326
thermistor resistance check ........................ 266, 286
thermostat control ........................................... 84, 95
TIMER operation ................................................. 191
titanium apatite photocatalytic air-purifying filter ... 91
transmission error
between indoor unit and remote controller ... 282
between main and sub remote controller ...... 283
transmission error between indoor unit and
BP unit .......................................................... 290
transmission error between outdoor unit and
BP unit .......................................................... 292
troubleshooting .................................................... 211
troubleshooting with the LED
BP unit .......................................................... 244
outdoor unit ................................................... 243
skyair indoor unit ........................................... 242
troubleshooting with the operation lamp ............. 241
U
U0 ........................................................................ 316
U2 ........................................................................ 317
U3 ........................................................................ 319
U4 ........................................................................ 290
U5 ........................................................................ 282
U8 ........................................................................ 283
U9 ........................................................................ 320
UA ............................................................... 284, 321
UF ....................................................................... 322
UH ....................................................................... 323
UJ ........................................................................ 292
unit No. change ................................................... 137
V
V1 ............................................ 25, 27, 29, 31, 32, 35
vacuuming mode ................................................. 126
varistor ................................................ 25, 27, 29, 31
Index
SiEBE18-526
W
wide-angle louvers .................................................80
wireless address switch (SS2) .............................133
wiring diagrams ....................................................367
X
X14A ......................................................................40
X15A ................................................................38, 40
X17A ................................................................38, 40
X18A ................................................................38, 40
X19A ................................................................38, 40
X1A ..................................................................20, 23
X1M ........................................................................20
X205A ....................................................................22
X206A ....................................................................22
X207A ....................................................................22
X20A ..........................................................24, 38, 40
X21A ......................................................................24
X23A ......................................................................24
X24A ................................................................38, 40
X25A ..........................................................20, 38, 40
X26A ................................................................20, 40
X27A ................................................................38, 40
X28A ......................................................................20
X29A ......................................................................40
X2A ........................................................................20
X33A ................................................................38, 40
X34A ......................................................................20
X35A ................................................................38, 40
X36A ......................................................................38
X37A ......................................................................20
X3A ........................................................................20
X3M ........................................................................24
X40A ................................................................38, 40
X44A ......................................................................20
X45A ......................................................................20
X46A ......................................................................20
X4M ........................................................................24
X5A ............................................................20, 38, 40
X5M ........................................................................24
X60A ..........................................................22, 38, 40
X61A ................................................................38, 40
X6A ........................................................................20
X90A ......................................................................24
Index
v
SiEBE18-526
Drawings & Flow Charts
A
abnormal discharge pipe temperature .................300
actuation of high pressure switch .........................295
actuation of low pressure switch ..........................296
address setting .....................................................134
after setting ..........................................................135
ARC433A .............................................................245
automatic air flow control .......................................81
automatic operation ...............................................83
auto-swing ..............................................................80
B
buzzer PCB ............................................................30
C
centralized group No. setting ...............................136
check for fan motor connector (signal line) ..........324
check for fan speed pulse input on outdoor unit
pc board ........................................................325
check on connector of fan motor (power supply cable)
.......................................................................324
check operation ....................................................109
check operation not executed ..............................319
check work prior to turn power supply on .............106
compressor motor lock .........................................297
condensation avoidance control (FHQ only) ..........96
control PCB ......................................... 28, 31, 33, 37
control PCB (A1P) ..................................................21
control PCB (indoor unit) ................................. 26, 30
cooling operation fan control ..................................60
D
dew condensation prevention control ....................73
diagnosis mode ....................................................246
discharge pipe protection control ...........................70
display PCB .................................. 26, 30, 31, 34, 37
drain pump control .................................................96
E
econo mode ...........................................................86
F
fan motor connector output check ............... 265, 285
fan motor or related abnormality
AC motor .......................................................260
DC motor .......................................................261
faulty BP liquid pipe thermistor ............................289
faulty combination of inverter and fan driver ........315
field setting
wired remote controller ..................................129
wireless remote controller ..............................130
field setting from outdoor unit
mode changing procedure .............................113
filter PCB (A3P) ......................................................23
freeze-up protection control ............................ 72, 95
vi
freeze-up protection control or
high pressure control ................................... 258
full closing of motorized valves ............................. 77
function outline ...................................................... 93
functional parts layout ........................................... 47
H
high pressure protection control ............................ 67
HOME LEAVE operation ....................................... 89
I
indoor unit fan motor lock .................................... 272
indoor unit PCB abnormality ....................... 257, 268
inspection/test button .......................................... 248
INTELLIGENT EYE ............................................... 87
INTELLIGENT EYE sensor ................................. 140
INTELLIGENT EYE sensor PCB ............... 26, 28, 30
inverter compressor abnormal ............................ 309
inverter current abnormal .................................... 310
inverter PCB (A2P) ................................................ 22
inverter POWERFUL operation ............................. 90
inverter protection control ...................................... 71
inverter start up error ........................................... 311
J
jumper settings .................................................... 139
L
limit switch continuity check ................................ 265
location of operation lamp ................................... 241
low pressure drop due to refrigerant shortage or
electronic expansion valve failure ................ 316
low pressure protection control ............................. 69
M
main/sub switch (SS1) ........................................ 133
maintenance mode setting .................................. 137
malfunction in other indoor unit or
other BP unit ................................................ 320
malfunction of discharge pipe thermistor (R3T) .. 302
malfunction of drain system ................................ 271
malfunction of drain water level system .............. 269
malfunction of electronic expansion valve ........... 287
malfunction of field setting switch ........................ 284
malfunction of heat exchanger
thermistor (R2T) ........................................... 278
malfunction of heat exchanger
thermistor (R3T) ........................................... 279
malfunction of high pressure sensor ................... 306
malfunction of indoor unit fan motor .................... 273
malfunction of inverter radiating fin
temperature rise ........................................... 308
malfunction of inverter radiating fin temperature rise
sensor .......................................................... 314
malfunction of low pressure sensor ..................... 307
Drawings & Flow Charts
SiEBE18-526
malfunction of moving part of electronic expansion
valve ..............................................................299
malfunction of outdoor unit fan motor ..................298
malfunction of receiver gas pipe
thermistor (R5T) ............................................305
malfunction of remote controller thermistor ..........281
malfunction of suction air thermistor ....................280
malfunction of system,
refrigerant system address undefined ...........323
malfunction of thermistor (R2T) for suction pipe ...303
malfunction of thermistor (R4T) for outdoor unit heat
exchanger .....................................................304
malfunction of thermistor for outdoor air (R1T) ....301
malfunction of transmission between inverter and
control PCB ...................................................312
mismatching of indoor unit, bp unit and
outdoor unit ...................................................321
malfunction of capacity setting .............................277
N
night set mode .......................................................85
O
ON/OFF button on indoor unit ................................91
operation mode ......................................................54
outdoor unit pc board layout ................................111
P
pc board defect ........................................... 288, 294
PCB (BP unit) .........................................................24
PCB (ceiling mounted cassette type) .....................39
PCB (ceiling suspended type) ................................40
piping diagrams
BPMKS967A2B .............................................361
BPMKS967A3B .............................................361
BPMKS967B2B .............................................361
BPMKS967B3B .............................................361
CDXS50/60CVMB .........................................363
CTXS50D(2)VMW(L) .....................................362
FDXS25/35CAVMB .......................................363
FDXS25/35CVMB ..........................................363
FFQ25/35/50/60B7V1B .................................366
FHQ35/50/60BUV1B9 ...................................366
FLXS25/35BAVMB ........................................364
FLXS25/35BVMB ..........................................364
FLXS50/60BAVMB ........................................364
FLXS50/60BVMB ..........................................364
FTXS20/25/35CAVMB ...................................362
FTXS20/25/35CVMB(9)(8) ............................362
FTXS20/25/35D(2)VMW(L)(9) .......................362
FTXS20/25/35DA(3)VMW(L)(7) ....................362
FTXS50/60BVMB ..........................................362
FTXS71BVMB ...............................................363
FVXS25/35BAVMB ........................................365
FVXS25/35BVMB ..........................................365
FVXS50BAVMB .............................................365
FVXS50BVMB ...............................................365
RMXS112/140/160D7V3B .............................360
power supply insufficient or
instantaneous failure .....................................317
power supply PCB .......................................... 33, 36
Drawings & Flow Charts
power supply waveforms check .................. 267, 293
pressure sensor .................................................. 328
program dry operation function ........................... 101
programme dry function ........................................ 82
R
range of air flow direction setting ........................ 132
receiver setting .................................................... 133
refrigerant circuit ................................................... 44
refrigerant flow for each operation mode .............. 48
refrigerant system not set,
incompatible wiring/piping ............................ 322
remote controller ................................................. 245
remote controller thermostat ............................... 100
reprogramming the PCB addresses of BP unit ... 107
S
self-diagnosis by wired remote controller ............ 249
self-diagnosis by wireless remote controller ....... 250
service check function ......................................... 245
set cool / heat separately for each outdoor unit system
by cool/heat switching remote controller ...... 119
set cool/heat separately for each outdoor system by
indoor unit remote controller ........................ 118
setting of demand operation
image of operation in the case of A .............. 123
image of operation in the case of A and B .... 123
image of operation in the case of B .............. 123
setting of low noise operation
image of operation in the case of A .............. 121
image of operation in the case of A, B .......... 121
image of operation in the case of B .............. 121
SH control in cooling operation ............................. 78
shutter drive motor / shutter limit switch
abnormality .................................................. 264
signal receiver PCB .......................26, 28, 30, 34, 37
swing flap motor malfunction / lock ..................... 275
T
thermistor or related abnormality (indoor unit) .... 263
thermistor resistance check ................................ 266
thermostat control ........................................... 84, 95
transmission error
between indoor unit and remote controller ... 282
between main and sub remote controller ...... 283
transmission error between indoor unit and
BP unit ......................................................... 290
transmission error between outdoor unit and
BP unit ......................................................... 292
trial operation from remote controller .................. 138
troubleshooting with the LED on the BP unit ....... 244
troubleshooting with the LED on the outdoor unit
..................................................................... 243
turn power on ...................................................... 106
W
wired remote controller
field setting .................................................... 129
wireless address switch (SS2) ............................ 133
wireless remote controller
field setting .................................................... 130
vii
SiEBE18-526
wiring diagrams
BPMKS967A2B .............................................368
BPMKS967A3B .............................................368
BPMKS967B2B .............................................368
BPMKS967B3B .............................................368
CDXS50/60CVMB .........................................371
CTXS50D(2)VMW(L) .....................................369
FDXS25/35CAVMB .......................................371
FDXS25/35CVMB ..........................................371
FFQ25/35/50/60B7V1B .................................373
FHQ35/50/60BUV1B9 ...................................374
FLXS25/35/50/60BAVMB ..............................371
FLXS25/35/50/60BVMB ................................371
FTXS20/25/35CAVMB ...................................369
FTXS20/25/35CVMB(9)(8) ............................369
FTXS20/25/35D(2)VMW(L)(9) .......................369
FTXS20/25/35DA(3)VMW(L)(7) ....................369
FTXS50BVMB ...............................................370
FTXS60/71BVMB ..........................................370
FVXS25/35/50BAVMB ...................................372
FVXS25/35/50BVMB .....................................372
RMXS112/140/160D7V3B .............................367
viii
Drawings & Flow Charts
Daikin Europe N.V. is approved by LRQA for its Quality
Management System in accordance with the ISO9001
standard. ISO9001 pertains to quality assurance
regarding design, development, manufacturing as well
as to services related to the product.
Daikin units comply with the European regulations that
guarantee the safety of the product.
ISO14001 assures an effective environmental
management system in order to help protect human
health and the environment from the potential impact
of our activities, products and services and to assist in
maintaining and improving the quality of the
environment.
Daikin Europe N.V. participates in the Eurovent
Certification Programme for Air Conditioners (AC),
Liquid Chilling Packages (LCP) and Fan Coil Units (FC);
the certified data of certified models are listed in the
Eurovent Directory.
Specifications are subject to change without prior notice
SiEBE18-526 • 10/2005
Prepared in Belgium by Lannoo
"The present publication is drawn up by way of
information only and does not constitute an offer
binding upon Daikin Europe N.V.. Daikin Europe N.V.
has compiled the content of this publication to the
best of its knowledge. No express or implied
warranty is given for the completeness, accuracy,
reliability or fitness for particular purpose of its
content and the products and services presented
therein. Specifications are subject to change without
prior notice. Daikin Europe N.V. explicitly rejects any
liability for any direct or indirect damage, In the
broadest sense, arising from or related to the use
and/or interpretation of this publication. All content is
copyrighted by Daikin Europe N.V.."
Zandvoordestraat 300
B-8400 Ostend - Belgium
www.daikineurope.com
q<R.+.!Ost
2/5
DS1-3
BP Unit
DS1-4
Not Used
ON Connect BP unit
OFF Not connect BP unit
Do not change the factory setting
Download PDF