www.daikineurope.com
B-8400 Ostend - Belgium
Zandvoordestraat 300
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.
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.
Specifications are subject to change without prior notice
Daikin units comply with the European regulations that
guarantee the safety of the product.
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.
Service Manual / Inverter Pair Wall Mounted Type D-Series
SiEBE04-507
SiEBE04-507 • 06/2005
Prepared in Belgium by Lannoo
[Applied Models]
zInverter Pair : Cooling Only
zInverter Pair : Heat Pump
Wall Mounted Type D-Series
Inverter Pair
Manual
Service
SiEBE04-507
SiEBE04-507
Service
Manual
Inverter Pair
Wall Mounted Type D-Series
[Applied Models]
zInverter Pair : Cooling Only
zInverter Pair : Heat Pump
SiEBE04-507
Inverter Pair
D-Series
zCooling Only
Indoor Unit
FTKS20DVMW(L)
FTKS25DVMW(L)
FTKS35DVMW(L)
FTKS20DVMW9
FTKS25DVMW9
FTKS35DVMW9
FTKS20D2VMW(L)
FTKS25D2VMW(L)
FTKS35D2VMW(L)
Outdoor Unit
RKS20DVMB
RKS25DVMB
RKS35DVMB
RKS20D2VMB
RKS25D2VMB
RKS35D2VMB
zHeat Pump
Indoor Unit
FTXS20DVMW(L)
FTXS25DVMW(L)
FTXS35DVMW(L)
FTXS20DVMW9
FTXS25DVMW9
FTXS35DVMW9
FTXS20D2VMW(L)
FTXS25D2VMW(L)
FTXS35D2VMW(L)
Outdoor Unit
RXS20DVMB
RXS25DVMB
RXS35DVMB
Table of Contents
RXS20D2VMB
RXS25D2VMB
RXS35D2VMB
i
SiEBE04-507
1. Introduction .............................................................................................v
1.1 Safety Cautions ........................................................................................v
Part 1 List of Functions ................................................................ 1
1. List of Functions ......................................................................................2
Part 2 Specifications .................................................................... 5
1. Specifications ..........................................................................................6
1.1 Cooling Only.............................................................................................6
1.2 Heat Pump ...............................................................................................9
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 15
1. Printed Circuit Board Connector Wiring Diagram..................................16
1.1 Indoor Unit..............................................................................................16
1.2 Outdoor Unit ...........................................................................................18
Part 4
Function and Control....................................................... 21
1. Main Functions......................................................................................22
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
Frequency Principle................................................................................22
Air Flow Direction Control.......................................................................24
Fan Speed Control for Indoor Units........................................................25
Programme Dry Function .......................................................................26
Automatic Operation...............................................................................27
Thermostat Control.................................................................................28
NIGHT SET Mode ..................................................................................29
ECONO Mode ........................................................................................30
INTELLIGENT EYE ................................................................................31
Inverter POWERFUL Operation .............................................................33
Other Functions......................................................................................34
2. Function of Thermistor ..........................................................................35
2.1 Heat Pump Model...................................................................................35
2.2 Cooling Only Model ................................................................................36
3. Control Specification .............................................................................37
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
ii
Mode Hierarchy ......................................................................................37
Frequency Control..................................................................................38
Controls at Mode Changing / Start-up....................................................40
Discharge Pipe Control ..........................................................................41
Input Current Control..............................................................................42
Freeze-up Protection Control .................................................................43
Heating Peak-cut Control .......................................................................43
Fan Control.............................................................................................44
Liquid Compression Protection Function 2.............................................44
Defrost Control .......................................................................................45
Electronic Expansion Valve Control .......................................................46
Malfunctions ...........................................................................................49
Forced Operation Mode .........................................................................50
Additional Function.................................................................................50
Facility Setting Jumper (cooling at low outdoor temperature) ................51
Table of Contents
SiEBE04-507
Part 5 System Configuration....................................................... 53
1. System Configuration............................................................................54
2. Instruction..............................................................................................55
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
Safety precautions..................................................................................55
Names of parts .......................................................................................57
Preparation before Operation.................................................................60
AUTO · DRY · COOL · HEAT · FAN Operation ......................................63
Adjusting the Air Flow Direction .............................................................65
POWERFUL Operation ..........................................................................67
OUTDOOR UNIT SILENT Operation ....................................................68
ECONO Operation .................................................................................69
INTELLIGENT EYE Operation ...............................................................70
TIMER Operation ...................................................................................72
Care and Cleaning .................................................................................74
Troubleshooting......................................................................................77
Part 6 Service Diagnosis............................................................. 81
1.
2.
3.
4.
Caution for Diagnosis............................................................................82
Problem Symptoms and Measures .......................................................83
Service Check Function ........................................................................84
Troubleshooting ....................................................................................87
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
4.15
4.16
4.17
4.18
4.19
4.20
4.21
4.22
4.23
4.24
Error Codes and Description ..................................................................87
Indoor Unit PCB Abnormality .................................................................88
Freeze-up Protection Control or High Pressure Control.........................89
Fan Motor (DC Motor) or Related Abnormality.......................................91
Thermistor or Related Abnormality (Indoor Unit)....................................93
Signal Transmission Error (between Indoor and Outdoor Unit) .............94
Unspecified Voltage (between Indoor and Outdoor Units) .....................95
Outdoor Unit PCB Abnormality...............................................................96
OL Activation (Compressor Overload) ...................................................97
Compressor Lock ...................................................................................98
DC Fan Lock ..........................................................................................99
Input Over Current Detection ...............................................................100
Four Way Valve Abnormality................................................................101
Discharge Pipe Temperature Control...................................................103
High Pressure Control in Cooling .........................................................104
Compressor System Sensor Abnormality ............................................106
Position Sensor Abnormality ................................................................107
DC Voltage / Current Sensor Abnormality............................................108
Thermistor or Related Abnormality (Outdoor Unit)...............................109
Electrical Box Temperature Rise..........................................................111
Radiation Fin Temperature Rise ..........................................................113
Output Over Current Detection.............................................................115
Insufficient Gas.....................................................................................117
Over-voltage Detection.........................................................................119
5. Check ..................................................................................................120
5.1 How to Check .......................................................................................120
Table of Contents
iii
SiEBE04-507
Part 7 Removal Procedure ........................................................ 127
1. Indoor Unit...........................................................................................128
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
Removal of Air Filter.............................................................................128
Removal of Front Panel........................................................................130
Removal of Front Grille ........................................................................132
Removal of Horizontal Blades and Vertical Blades ..............................135
Removal of Electrical Box ....................................................................138
Removal of PCB...................................................................................141
Removal of Drain Pan Unit...................................................................147
Removal of Fan Motor..........................................................................151
Removal of Heat Exchanger ................................................................153
Removal of Fan Rotor ..........................................................................156
2. Outdoor Unit........................................................................................159
2.1
2.2
2.3
2.4
2.5
2.6
2.7
Removal of Panels and Fan Motor.......................................................159
Removal of Electrical Box ....................................................................166
Removal of Reactor and Partition Plate ...............................................168
Removal of Sound Blanket...................................................................170
Removal of Four Way Valve.................................................................172
Removal of Compressor.......................................................................174
Removal of PCB...................................................................................176
Part 8 Others ............................................................................. 179
1. Others .................................................................................................180
1.1 Test Run from the Remote Controller ..................................................180
1.2 Jumper Settings ...................................................................................181
Part 9 Appendix......................................................................... 183
1. Piping Diagrams..................................................................................184
1.1 Indoor Units ..........................................................................................184
1.2 Outdoor Units .......................................................................................185
2. Wiring Diagrams..................................................................................187
2.1 Indoor Units ..........................................................................................187
2.2 Outdoor Units .......................................................................................187
Index
............................................................................................. i
Drawings & Flow Charts ................................................................ v
iv
Table of Contents
SiEBE04-507
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.
v
Introduction
SiEBE04-507
Warning
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.
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.
vi
For integral units
only
For integral units
only
SiEBE04-507
Introduction
Warning
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 / R22) 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.
vii
Introduction
SiEBE04-507
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
viii
SiEBE04-507
Part 1
List of Functions
1. List of Functions ......................................................................................2
List of Functions
1
List of Functions
SiEBE04-507
Basic
Function
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
Operation Limit for Cooling (°CDB) H1
Operation Limit for Heating (°CWB)
{
–10
~46
—
–15
~20
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
{
{
{
{
Functions
Oval Scroll Compressor
—
—
Swing Compressor
{
{
Rotary Compressor
—
—
Mold Proof Air Filter
Health &
Clean
Reluctance DC Motor
{
{
Wipe-clean Flat Panel
{
{
Power-Airflow Flap
—
—
Washable Grille
—
—
—
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
—
—
Timer
24-Hour On/Off Timer
{
{
Night Set Mode
{
{
Auto-Restart (after Power Failure)
{
{
Self-Diagnosis (Digital, LED) Display
H2
H2
Wiring Error Check
—
—
Anticorrosion Treatment of Outdoor
Heat Exchanger
{
{
Comfort Airflow Mode
{
{
3-Step Airflow (H/P Only)
—
—
Auto Fan Speed
{
{
Indoor Unit Silent Operation
{
{
Night Quiet Mode (Automatic)
—
—
Outdoor Unit Silent Operation (Manual)
{
{
Intelligent Eye
{
{
Multi-Split / Split Type Compatible
Indoor Unit
{
{
Quick Warming Function
—
{
Flexible Voltage Correspondence
{
{
Hot-Start Function
—
{
Automatic Defrosting
—
{
Chargeless
Automatic Operation
—
{
Either Side Drain (Right or Left)
{
{
Programme Dry Function
{
{
Power Selection
—
—
5-Rooms Centralized Controller
(Option)
{
{
Remote Control Adaptor
(Normal Open-Pulse Contact)(Option)
{
{
Fan Only
{
{
New Powerful Operation (Non-Inverter)
—
—
Inverter Powerful Operation
{
{
Priority-Room Setting
—
—
Worry Free
“Reliability &
Durability”
Flexibility
Remote
Control
High Ceiling Application
{
{
—
—
10m
10m
Cooling / Heating Mode Lock
—
—
Home Leave Operation
—
—
Remote Control Adaptor
(Normal Open Contact)(Option)
{
{
{
ECONO Mode
{
{
DIII-NET Compatible (Adaptor)(Option)
{
Indoor Unit On/Off Switch
{
{
Wireless
{
{
Signal Reception Indicator
{
{
Wired
—
—
Temperature Display
—
—
Another Room Operation
—
—
Note: { : Holding Functions
— : No Functions
2
{
–10
~46
FTXS20-35DVMW(L)
RXS20-35DVMB
Inverter (with Inverter Power Control)
Category
FTKS20-35DVMW(L)
RKS20-35DVMB
Functions
FTXS20-35DVMW(L)
RXS20-35DVMB
Category
FTKS20-35DVMW(L)
RKS20-35DVMB
1. List of Functions
Remote
Controller
H1 : Lower limit can be extended to –15°C by cutting
jumper. (facility use only)
H2 : Digital Only
List of Functions
Basic
Function
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
Operation Limit for Cooling (°CDB) H1
Operation Limit for Heating (°CWB)
{
{
–10
~46
–10
~46
—
–15
~20
PAM Control
{
{
FTXS20-35DVMW9
RXS20-35DVMB
Inverter (with Inverter Power Control)
Category
FTKS20-35DVMW9
RKS20-35DVMB
Functions
FTXS20-35DVMW9
RXS20-35DVMB
Category
List of Functions
FTKS20-35DVMW9
RKS20-35DVMB
SiEBE04-507
Air Purifying Filter with Bacteriostatic,
Virustatic Functions
—
—
Photocatalytic Deodorizing Filter
—
—
Air Purifying Filter with Photocatalytic
Deodorizing Function
—
—
Titanium Apatite Photocatalytic
Air-Purifying Filter
{
{
Functions
Oval Scroll Compressor
—
—
Swing Compressor
{
{
Rotary Compressor
—
—
Mold Proof Air Filter
{
{
Reluctance DC Motor
{
{
Wipe-clean Flat Panel
{
{
Power-Airflow Flap
—
—
Washable Grille
—
—
Power-Airflow Dual Flaps
{
{
Mold Proof Operation
—
—
Power-Airflow Diffuser
—
—
Heating Dry Operation
—
—
Wide-Angle Louvers
{
{
Good-Sleep Cooling Operation
—
—
Health &
Clean
24-Hour On/Off Timer
{
{
Night Set Mode
{
{
Auto-Restart (after Power Failure)
{
{
Self-Diagnosis (Digital, LED) Display
H2
H2
Wiring Error Check
—
—
Anticorrosion Treatment of Outdoor
Heat Exchanger
{
{
Multi-Split / Split Type Compatible
Indoor Unit
{
{
Vertical Auto-Swing (Up and Down)
{
{
Horizontal Auto-Swing (Right and Left)
—
—
3-D Airflow
—
—
Comfort Airflow Mode
{
{
3-Step Airflow (H/P Only)
—
—
Auto Fan Speed
{
{
Indoor Unit Silent Operation
{
{
Night Quiet Mode (Automatic)
—
—
Outdoor Unit Silent Operation (Manual)
{
{
Intelligent Eye
{
{
Quick Warming Function
—
{
Hot-Start Function
—
{
Automatic Defrosting
—
{
Chargeless
Automatic Operation
—
{
Either Side Drain (Right or Left)
{
{
Programme Dry Function
{
{
Power Selection
—
—
5-Rooms Centralized Controller
(Option)
{
{
Remote Control Adaptor
(Normal Open-Pulse Contact)(Option)
{
{
Remote Control Adaptor
(Normal Open Contact)(Option)
{
{
DIII-NET Compatible (Adaptor)(Option)
{
{
Wireless
{
{
Wired
—
—
Fan Only
{
{
New Powerful Operation (Non-Inverter)
—
—
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
Timer
Worry Free
“Reliability &
Durability”
Flexibility
Remote
Control
Remote
Controller
{
{
Flexible Voltage Correspondence
{
{
High Ceiling Application
—
—
10m
10m
H1 : Lower limit can be extended to –15°C by cutting
jumper. (facility use only)
H2 : Digital Only
3
Basic
Function
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
Operation Limit for Cooling (°CDB) H1
Operation Limit for Heating (°CWB)
{
–10
~46
—
–15
~20
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
{
{
{
Functions
Oval Scroll Compressor
—
—
Swing Compressor
{
{
Rotary Compressor
—
—
Mold Proof Air Filter
{
Reluctance DC Motor
{
{
Wipe-clean Flat Panel
{
{
Power-Airflow Flap
—
—
Washable Grille
—
—
—
Health &
Clean
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)
—
—
Auto Fan Speed
{
{
Indoor Unit Silent Operation
{
{
Night Quiet Mode (Automatic)
—
—
Outdoor Unit Silent Operation (Manual)
{
{
Intelligent Eye
{
{
Quick Warming Function
—
{
Hot-Start Function
—
{
Timer
Worry Free
“Reliability &
Durability”
Flexibility
24-Hour On/Off Timer
{
{
Night Set Mode
{
{
Auto-Restart (after Power Failure)
{
{
Self-Diagnosis (Digital, LED) Display
{
H2
H2
Wiring Error Check
—
—
Anticorrosion Treatment of Outdoor
Heat Exchanger
{
{
Multi-Split / Split Type Compatible
Indoor Unit
{
{
{
Flexible Voltage Correspondence
{
{
High Ceiling Application
—
—
10m
10m
Automatic Defrosting
—
{
Chargeless
Automatic Operation
—
{
Either Side Drain (Right or Left)
{
{
Programme Dry Function
{
{
Power Selection
—
—
5-Rooms Centralized Controller
(Option)
{
{
Remote Control Adaptor
(Normal Open-Pulse Contact)(Option)
{
{
Fan Only
{
{
New Powerful Operation (Non-Inverter)
—
—
Inverter Powerful Operation
{
{
Priority-Room Setting
—
—
Remote
Control
Cooling / Heating Mode Lock
—
—
Home Leave Operation
—
—
Remote Control Adaptor
(Normal Open Contact)(Option)
{
{
{
ECONO Mode
{
{
DIII-NET Compatible (Adaptor)(Option)
{
Indoor Unit On/Off Switch
{
{
Wireless
{
{
Signal Reception Indicator
{
{
Wired
—
—
Temperature Display
—
—
Another Room Operation
—
—
Note: { : Holding Functions
— : No Functions
4
{
–10
~46
FTXS20-35D2VMW(L)
RXS20-35D2VMB9
Inverter (with Inverter Power Control)
Category
FTKS20-35D2VMW(L)
RKS20-35D2VMB9
Functions
FTXS20-35D2VMW(L)
RXS20-35D2VMB9
Category
SiEBE04-507
FTKS20-35D2VMW(L)
RKS20-35D2VMB9
List of Functions
Remote
Controller
H1 : Lower limit can be extended to –15°C by cutting
jumper. (facility use only)
H2 : Digital Only
List of Functions
SiEBE04-507
Part 2
Specifications
1. Specifications ..........................................................................................6
1.1 Cooling Only.............................................................................................6
1.2 Heat Pump ...............................................................................................9
Specifications
5
Specifications
SiEBE04-507
1. Specifications
1.1
Cooling Only
230V, 50Hz
Models
Indoor Units
Outdoor Units
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Gas
Connections
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate
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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
Air Flow Rate
m³/min
(cfm)
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
FTKS20D(2)VMW
RKS20D(2)VMB
2.0 (1.3~2.6)
6,820 (4,430~8,900)
1,720 (1,120~2,240)
0.9
2.7
FTKS20DVMW9
RKS20DVMB
2.0 (1.3~2.6)
6,820 (4,430~8,900)
1,720 (1,120~2,240)
0.9
2.7
FTKS20D(2)VML
RKS20D(2)VMB
2.0 (1.3~2.6)
6,820 (4,430~8,900)
1,720 (1,120~2,240)
0.9
2.7
W
490 (300~830)
490 (300~830)
490 (300~830)
%
W/W
mm
mm
mm
mm
mm
kg
kg
78.9
4.08
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS20D(2)VMW
White
8.7 (307)
6.7 (237)
4.7 (166)
3.9 (138)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.16
35
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
78.9
4.08
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS20DVMW9
White
8.7 (307)
6.7 (237)
4.7 (166)
3.9 (138)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.16
35
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
78.9
4.08
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS20D(2)VMWL
Silver Line
8.7 (307)
6.7 (237)
4.7 (166)
3.9 (138)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.16
35
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
dBA
38 / 25 / 22
38 / 25 / 22
38 / 25 / 22
dBA
W
A
W
%
A
mm
mm
kg
kg
56
RKS20D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
25.7 (907)
Propeller
31
2.54
455
77.9
3.6
550×765×285
589×882×363
30
35
56
RKS20DVMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
25.7 (907)
Propeller
31
2.54
455
77.9
3.6
550×765×285
589×882×363
30
35
56
RKS20D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
25.7 (907)
Propeller
31
2.54
455
77.9
3.6
550×765×285
589×882×363
30
35
dBA
46 / 43
46 / 43
46 / 43
dBA
61
3D049118A
61
3D049118A
61
3D049119A
H
M
L
SL
W
Steps
A
W
%
W
L
kg
H
L
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
6
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
Specifications
SiEBE04-507
Specifications
230V, 50Hz
Models
Indoor Units
Outdoor Units
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Connections Gas
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate 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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
Air Flow Rate
m³/min
(cfm)
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
FTKS25D(2)VMW
RKS25D(2)VMB
2.5 (1.3~3.0)
8,550 (4,450~10,250)
2,150 (1,120~2,580)
1.2
3.8
FTKS25DVMW9
RKS25DVMB
2.5 (1.3~3.0)
8,550 (4,450~10,250)
2,150 (1,120~2,580)
1.2
3.8
FTKS25D(2)VML
RKS25D(2)VMB
2.5 (1.3~3.0)
8,550 (4,450~10,250)
2,150 (1,120~2,580)
1.2
3.8
W
685 (300~960)
685 (300~960)
685 (300~960)
%
W/W
mm
mm
mm
mm
mm
kg
kg
78.4
3.65
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS25D(2)VMW
White
8.7 (307)
6.7 (237)
4.7 (166)
3.9 (138)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.16
35
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
78.4
3.65
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS25DVMW9
White
8.7 (307)
6.7 (237)
4.7 (166)
3.9 (138)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.16
35
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
78.4
3.65
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS25D(2)VML
Silver Line
8.7 (307)
6.7 (237)
4.7 (166)
3.9 (138)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.16
35
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
dBA
38 / 25 / 22
38 / 25 / 22
38 / 25 / 22
dBA
W
A
W
%
A
mm
mm
kg
kg
56
RKS25D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
25.7 (907)
Propeller
31
3.64
650
77.6
4.3
550×765×285
589×882×363
30
35
56
RKS25DVMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
25.7 (907)
Propeller
31
3.64
650
77.6
4.3
550×765×285
589×882×363
30
35
56
RKS25D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
25.7 (907)
Propeller
31
3.64
650
77.6
4.3
550×765×285
589×882×363
30
35
dBA
46 / 43
46 / 43
46 / 43
dBA
61
3D049120A
61
3D049120A
61
3D049121A
H
M
L
SL
W
Steps
A
W
%
W
L
kg
H
L
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
Specifications
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
7
Specifications
SiEBE04-507
230V, 50Hz
Models
Indoor Units
Outdoor Units
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Connections Gas
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate
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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
Air Flow Rate m³/min
cfm
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
FTKS35D(2)VMW
RKS35D(2)VMB
3.4 (1.4~3.8)
11,600 (4,750~12,950)
2,920 (1,200~3,270)
1.9
4.8
FTKS35DVMW9
RKS35DVMB
3.4 (1.4~3.8)
11,600 (4,750~12,950)
2,920 (1,200~3,270)
1.9
4.8
FTKS35D(2)VML
RKS35D(2)VMB
3.4 (1.4~3.8)
11,600 (4,750~12,950)
2,920 (1,200~3,270)
1.9
4.8
W
1,045 (300~1,270)
1,045 (300~1,270)
1,045 (300~1,270)
%
W/W
mm
mm
mm
mm
mm
kg
kg
94.7
3.25
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS35D(2)VMW
White
8.9 (314)
6.9 (244)
4.8 (169)
4.0 (141)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.18
40
96.6
Microcomputer Control
238×800×195
265×855×340
9
12
94.7
3.25
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS35DVMW9
White
8.9 (314)
6.9 (244)
4.8 (169)
4.0 (141)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.18
40
96.6
Microcomputer Control
238×800×195
265×855×340
9
12
94.7
3.25
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTKS35D(2)VML
Silver Line
8.9 (314)
6.9 (244)
4.8 (169)
4.0 (141)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.18
40
96.6
Microcomputer Control
238×800×195
265×855×340
9
12
dBA
39 / 26 / 23
39 / 26 / 23
39 / 26 / 23
dBA
W
A
W
%
A
mm
mm
kg
kg
57
RKS35D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
1.0
33.5 (1,183)
23.4 (826)
Propeller
31
4.62
1,005
94.6
5.3
550×765×285
589×882×363
32
38
57
RKS35DVMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
1.0
33.5 (1,183)
23.4 (826)
Propeller
31
4.62
1,005
94.6
5.3
550×765×285
589×882×363
32
38
57
RKS35D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
1.0
33.5 (1,183)
23.4 (826)
Propeller
31
4.62
1,005
94.6
5.3
550×765×285
589×882×363
32
38
dBA
47 / 44
47 / 44
47 / 44
dBA
62
3D049122A
62
3D049122A
62
3D049123A
H
M
L
SL
W
Steps
A
W
%
W
L
kg
H
L
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
8
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
Specifications
SiEBE04-507
1.2
Specifications
Heat Pump
230V, 50Hz
Indoor Units
Models
FTXS20D(2)VMW
RXS20D(2)VMB
Outdoor Units
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Gas
Connections
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate 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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
m³/min
Air Flow Rate
(cfm)
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
Cooling
2.0 (1.3~2.6)
6,820 (4,430~8,900)
1,720 (1,120~2,240)
0.9
2.7
Heating
2.7 (1.3~4.1)
9,210 (4,430~14,000)
2,320 (1,120~3,530)
—
3.6
Cooling
2.0 (1.3~2.6)
6,820 (4,430~8,900)
1,720 (1,120~2,240)
0.9
2.7
Heating
2.7 (1.3~4.1)
9,210 (4,430~14,000)
2,320 (1,120~3,530)
—
3.6
W
490 (300~830)
660 (290~1,300)
490 (300~830)
660 (290~1,300)
%
W/W
mm
mm
mm
78.9
4.08
79.7
4.09
78.9
4.08
79.7
4.09
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS20D(2)VMW
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
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS20DVMW9
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
dBA
38 / 25 / 22
38 / 28 / 25
38 / 25 / 22
dBA
56
56
56
W
L
kg
H
L
W
A
W
%
A
mm
mm
kg
kg
dBA
46 / 43
47 / 44
46 / 43
dBA
61
62
61
3D049110A
47 / 44
62
3D049110A
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB/6°CWB
38 / 28 / 25
56
RXS20DVMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
32.6 (1,151)
25.7 (907)
30.6 (1,080)
Propeller
31
2.54
3.44
455
625
77.9
79.0
3.6
550×765×285
589×882×363
30
35
RXS20D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
32.6 (1,151)
25.7 (907)
30.6 (1,080)
Propeller
31
2.54
3.44
455
625
77.9
79.0
3.6
550×765×285
589×882×363
30
35
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
Specifications
FTXS20DVMW9
RXS20DVMB
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
9
Specifications
SiEBE04-507
230V, 50Hz
Indoor Units
Models
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Gas
Connections
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate 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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
Air Flow Rate
FTXS20D(2)VML
RXS20D(2)VMB
Outdoor Units
m³/min
(cfm)
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
Cooling
2.0 (1.3~2.6)
6,820 (4,430~8,900)
1,720 (1,120~2,240)
0.9
2.7
Heating
2.7 (1.3~4.1)
9,210 (4,430~14,000)
2,320 (1,120~3,530)
—
3.6
W
490 (300~830)
660 (290~1,300)
%
W/W
mm
mm
mm
78.9
4.08
79.7
4.09
H
M
L
SL
8.7 (307)
6.7 (237)
4.7 (166)
3.9 (138)
A
W
%
9.4 (332)
7.6 (268)
5.8 (205)
5.0 (177)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
W
Steps
0.16
35
95.1
dBA
38 / 25 / 22
dBA
56
L
W
A
W
%
A
mm
mm
kg
kg
38 / 28 / 25
56
RXS20D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
W
kg
H
L
0.16
35
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
mm
mm
kg
kg
36.2 (1,278)
25.7 (907)
32.6 (1,151)
30.6 (1,080)
Propeller
31
2.54
455
77.9
3.44
625
79.0
3.6
550×765×285
589×882×363
30
35
dBA
46 / 43
dBA
61
47 / 44
62
3D049111A
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
10
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS20D(2)VML
Silver Line
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB/6°CWB
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
Specifications
SiEBE04-507
Specifications
230V, 50Hz
Indoor Units
Models
FTXS25D(2)VMW
RXS25D(2)VMB
Outdoor Units
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Gas
Connections
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate 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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
Air Flow Rate m³/min (cfm)
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
Cooling
2.5 (1.3~3.0)
8,550 (4,450~10,250)
2,150 (1,120~2,580)
1.2
3.8
Heating
3.4 (1.3~4.5)
11,600 (4,450~15,350)
2,920 (1,120~3,870)
—
4.3
Cooling
2.5 (1.3~3.0)
8,550 (4,450~10,250)
2,150 (1,120~2,580)
1.2
3.8
Heating
3.4 (1.3~4.5)
11,600 (4,450~15,350)
2,920 (1,120~3,870)
—
4.3
W
685 (300~960)
920 (290~1,430)
685 (300~960)
920 (290~1,430)
%
W/W
mm
mm
mm
78.4
3.65
93.0
3.70
78.4
3.65
93.0
3.70
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS25D(2)VMW
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
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS25DVMW9
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
dBA
38 / 25 / 22
38 / 28 / 25
38 / 25 / 22
dBA
56
56
56
W
L
kg
H
L
W
A
W
%
A
mm
mm
kg
kg
dBA
46 / 43
47 / 44
46 / 43
dBA
61
62
61
3D049112A
47 / 44
62
3D049112A
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB/6°CWB
38 / 28 / 25
56
RXS25DVMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
32.6 (1,151)
25.7 (907)
30.6 (1,080)
Propeller
31
3.64
4.14
650
885
77.6
92.9
4.3
550×765×285
589×882×363
30
35
RXS25D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
36.2 (1,278)
32.6 (1,151)
25.7 (907)
30.6 (1,080)
Propeller
31
3.64
4.14
650
885
77.6
92.9
4.3
550×765×285
589×882×363
30
35
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
Specifications
FTXS25DVMW9
RXS25DVMB
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
11
Specifications
SiEBE04-507
230V, 50Hz
Indoor Units
Models
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Gas
Connections
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate
FTXS25D(2)VML
RXS25D(2)VMB
Outdoor Units
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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
Air Flow Rate m³/min (cfm)
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
Cooling
2.5 (1.3~3.0)
8,550 (4,450~10,250)
2,150 (1,120~2,580)
1.2
3.8
Heating
3.4 (1.3~4.5)
11,600 (4,450~15,350)
2,920 (1,120~3,870)
—
4.3
W
685 (300~960)
920 (290~1,430)
%
W/W
mm
mm
mm
78.4
3.65
93.0
3.70
H
M
L
SL
8.7 (307)
6.7 (237)
4.7 (166)
3.9 (138)
A
W
%
9.4 (332)
7.6 (268)
5.8 (205)
5.0 (177)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
W
Steps
0.16
35
95.1
dBA
38 / 25 / 22
dBA
56
L
W
A
W
%
A
mm
mm
kg
kg
38 / 28 / 25
56
RXS25D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
0.8
W
kg
H
L
0.16
35
95.1
Microcomputer Control
283×800×195
265×855×340
9
12
mm
mm
kg
kg
36.2 (1,278)
25.7 (907)
32.6 (1,151)
30.6 (1,080)
Propeller
31
3.64
650
77.6
4.14
885
92.9
4.3
550×765×285
589×882×363
30
35
dBA
46 / 43
dBA
61
47 / 44
62
3D049113A
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
12
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS25D(2)VM
Silver Line
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB/6°CWB
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
Specifications
SiEBE04-507
Specifications
230V, 50Hz
Indoor Units
Models
FTXS35D(2)VMW
RXS35D(2)VMB
Outdoor Units
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Gas
Connections
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate 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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
Air Flow Rate m³/min
(cfm)
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
Cooling
3.4 (1.4~3.8)
11,600 (4,750~12,950)
2,920 (1,200~3,270)
1.9
4.8
Heating
4.0 (1.4~5.0)
16,500 (4,750~17,050)
3,440 (1,200~4,300)
—
5.3
Cooling
3.4 (1.4~3.8)
11,600 (4,750~12,950)
2,920 (1,200~3,270)
1.9
4.8
Heating
4.0 (1.4~5.0)
16,500 (4,750~17,050)
3,440 (1,200~4,300)
—
5.3
W
1,045 (300~1,270)
1,155 (310~1,560)
1,045 (300~1,270)
1,155 (310~1,560)
%
W/W
mm
mm
mm
94.7
3.25
94.7
3.46
94.7
3.25
94.7
3.46
H
M
L
SL
W
Steps
A
W
%
mm
mm
kg
kg
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS35D(2)VMW
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
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS35DVMW9
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
dBA
57
57
57
W
L
kg
H
L
W
A
W
%
A
mm
mm
kg
kg
dBA
47 / 44
48 / 45
47 / 44
dBA
62
63
62
3D048875A
48 / 45
63
3D048875A
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB/6°CWB
39 / 29 / 26
57
RXS35DVMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
1.0
33.5 (1,183)
30.2 (1,066)
23.4 (826)
28.3 (999)
Propeller
35
4.62
5.12
1,005
1,115
94.6
94.7
5.3
550×765×285
589×882×363
32
38
RXS35D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
1.0
33.5 (1,183)
30.2 (1,066)
23.4 (826)
28.3 (999)
Propeller
35
4.62
5.12
1,005
1,115
94.6
94.7
5.3
550×765×285
589×882×363
32
38
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
Specifications
FTXS35DVMW9
RXS35DVMB
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
13
Specifications
SiEBE04-507
230V, 50Hz
Indoor Units
Models
Capacity
Rated (Min.~Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min.~Max.)
Power Factor
COP (Rated)
Liquid
Piping
Gas
Connections
Drain
Heat Insulation
Indoor Units
Front Panel Color
Air Flow Rate 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
Outdoor Units
Casing Color
Type
Compressor
Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
Fan
Air Flow Rate
FTXS35D(2)VML
RXS35D(2)VMB
Outdoor Units
m³/min
(cfm)
Type
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Starting Current
Dimensions (H×W×D)
Packaged Dimensions (H×W×D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Fan
Notes:
kW
Btu/h
kcal/h
L/h
A
Cooling
3.4 (1.4~3.8)
11,600 (4,750~12,950)
2,920 (1,200~3,270)
1.9
4.8
Heating
4.0 (1.4~5.0)
16,500 (4,750~17,050)
3,440 (1,200~4,300)
—
5.3
W
1,045 (300~1,270)
1,155 (310~1,560)
%
W/W
mm
mm
mm
94.7
3.25
94.7
3.46
H
M
L
SL
8.9 (314)
6.9 (244)
4.8 (169)
4.0 (141)
A
W
%
9.7 (342)
7.9 (279)
6.0 (212)
5.2 (184)
Cross Flow Fan
40
5 Steps, Silent, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
W
Steps
0.18
40
96.6
dBA
39 / 26 / 23
dBA
57
L
W
A
W
%
A
mm
mm
kg
kg
39 / 29 / 26
57
RXS35D(2)VMB
Ivory White
Hermetically Sealed Swing Type
1YC23NXD#A
600
FVC50K
0.375
R410A
1.0
W
kg
H
L
0.18
40
96.6
Microcomputer Control
283×800×195
265×855×340
9
12
mm
mm
kg
kg
33.5 (1,183)
23.4 (826)
30.2 (1,066)
28.3 (999)
Propeller
35
4.62
1,005
94.6
5.12
1,115
94.7
5.3
550×765×285
589×882×363
32
38
dBA
47 / 44
dBA
62
48 / 45
63
3D049114A
„ MAX. interunit piping length: 20m
„ MAX. interunit height difference: 15m
„ Amount of additional charge of refrigerant 20g/m for piping length exceeding 10m
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB/19°CWB
Outdoor ; 35°CDB/24°CWB
14
φ 6.4
φ 9.5
φ18.0
Both Liquid and Gas Pipes
FTXS35D(2)VML
Silver Line
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB/6°CWB
Piping Length
Conversion Formulae
kcal/h=kW×860
Btu/h=kW×3414
cfm=m³/min×35.3
7.5m
Specifications
SiEBE04-507
Part 3
Printed Circuit Board
Connector Wiring Diagram
1. Printed Circuit Board Connector Wiring Diagram..................................16
1.1 Indoor Unit..............................................................................................16
1.2 Outdoor Unit ...........................................................................................18
Printed Circuit Board Connector Wiring Diagram
15
Printed Circuit Board Connector Wiring Diagram
SiEBE04-507
1. Printed Circuit Board Connector Wiring Diagram
1.1
Indoor Unit
Connectors
1)
2)
3)
4)
5)
6)
7)
8)
Note:
S1
S6
S21
S26
S27, S29, S36
S28
S32
S35
Other designations
1) V1
2) JA
JB
JC
3)
4)
5)
6)
7)
8)
9)
16
Connector for fan motor
Connector for swing motor (horizontal blades)
Connector for centralized control (HA)
Connector for display PCB
Connector for control PCB
Connector for signal receiver PCB
Connector for heat exchanger thermistor
Connector for INTELLIGENT EYE sensor PCB
SW1
LED1
LED2
LED3
LED A
FU1
RTH1
Varistor
Address setting jumper
Fan speed setting when compressor is OFF on thermostat
Power failure recovery function (auto-restart)
∗ Refer to page 181 for detail.
Forced operation ON / OFF switch
LED for operation (green)
LED for timer (yellow)
LED for INTELLIGENT EYE (green)
LED for service monitor (green)
Fuse (3.15A)
Room temperature thermistor
Printed Circuit Board Connector Wiring Diagram
SiEBE04-507
Printed Circuit Board Connector Wiring Diagram
PCB Detail
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)
Printed Circuit Board Connector Wiring Diagram
17
Printed Circuit Board Connector Wiring Diagram
1.2
SiEBE04-507
Outdoor Unit
Connectors
1)
2)
3)
4)
5)
6)
7)
8)
Connector for filter PCB
Connector for control PCB
Connector for electronic expansion valve coil
Connector for compressor motor
Connector for overload protector
Connector for fan motor
Connector for four way valve coil
Connector for thermistors
(outdoor air, heat exchanger, discharge pipe)
9) HC3, HC4, HL3, HN3 Connector for filter PCB
Note:
Other designations
1)
2)
3)
4)
5)
18
S10
S11
S20
S30
S40
S70
S80
S90
FU1, FU2
FU3
LED A
V1, V2, V3
J8
Fuse (3.15A)
Fuse (20A)
Service monitor LED
Varistor
Facility setting jumper
∗Refer to page 51 for detail.
Printed Circuit Board Connector Wiring Diagram
SiEBE04-507
PCB Detail
Printed Circuit Board Connector Wiring Diagram
PCB(1): Filter PCB
V3 V2
FU3(20A)
S11
(R4293)
PCB(2): Control PCB (outdoor unit)
S10
S40 LED A
S90
S30
S70
J8
HC3
FU2(3.15A)
HN3
HC4
S20
Printed Circuit Board Connector Wiring Diagram
S80
V1
FU1(3.15A) HL3
(R4605)
19
Printed Circuit Board Connector Wiring Diagram
20
SiEBE04-507
Printed Circuit Board Connector Wiring Diagram
SiEBE04-507
Part 4
Function and Control
1. Main Functions......................................................................................22
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
Frequency Principle................................................................................22
Air Flow Direction Control.......................................................................24
Fan Speed Control for Indoor Units........................................................25
Programme Dry Function .......................................................................26
Automatic Operation...............................................................................27
Thermostat Control.................................................................................28
NIGHT SET Mode ..................................................................................29
ECONO Mode ........................................................................................30
INTELLIGENT EYE ................................................................................31
Inverter POWERFUL Operation .............................................................33
Other Functions......................................................................................34
2. Function of Thermistor ..........................................................................35
2.1 Heat Pump Model...................................................................................35
2.2 Cooling Only Model ................................................................................36
3. Control Specification .............................................................................37
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
Function and Control
Mode Hierarchy ......................................................................................37
Frequency Control..................................................................................38
Controls at Mode Changing / Start-up....................................................40
Discharge Pipe Control ..........................................................................41
Input Current Control..............................................................................42
Freeze-up Protection Control .................................................................43
Heating Peak-cut Control .......................................................................43
Fan Control.............................................................................................44
Liquid Compression Protection Function 2.............................................44
Defrost Control .......................................................................................45
Electronic Expansion Valve Control .......................................................46
Malfunctions ...........................................................................................49
Forced Operation Mode .........................................................................50
Additional Function.................................................................................50
Facility Setting Jumper (cooling at low outdoor temperature) ................51
21
Main Functions
SiEBE04-507
1. Main Functions
Note:
1.1
See the list of functions for the functions applicable to different models.
Frequency Principle
Main Control
Parameters
The compressor is frequency-controlled during normal operation. The target frequency is set by
the following 2 parameters coming from the operating indoor unit:
„ The load condition of the operating indoor unit
„ The difference between the room temperature and the set temperature
Additional
Control
Parameters
The target frequency is adapted by additional parameters in the following cases:
„ Frequency restrictions
„ Initial settings
„ Forced cooling operation
Inverter Principle
To regulate the capacity, a frequency control is needed. The inverter makes it possible to vary
the rotation speed of the compressor. The following table explains the conversion principle:
Phase
1
2
Drawing of
Inverter
Description
The supplied AC power source is converted into the DC power source for the present.
The DC power source is reconverted into the three phase AC power source with variable
frequency.
„ When the frequency increases, the rotation speed of the compressor increases resulting
in an increased refrigerant circulation. This leads to a higher amount of the heat
exchange per unit.
„ When the frequency decreases, the rotation speed of the compressor decreases
resulting in a decreased refrigerant circulation. This leads to a lower amount of the heat
exchange per unit.
The following drawing shows a schematic view of the inverter principle:
Refrigerant circulation rate (high)
DC
power
Amount of heat
exchanged air (small)
AC
power
high speed
Amount of heat
exchanged air (large)
Amount of heat
exchanged air (large)
high f
low f
Amount of heat
exchanged air (small)
low speed
50 Hz
freq=
constant 60 Hz
freq=variable
capacity=
variable
Refrigerant circulation rate (low)
22
(R2812)
Function and Control
SiEBE04-507
Inverter Features
Main Functions
The inverter provides the following features:
„ The regulating capacity can be changed according to the changes in the outdoor air
temperature and cooling / heating load.
„ Quick heating and quick cooling
The compressor rotational speed is increased when starting the heating (or cooling). This
enables a quick set temperature.
Air discharge
temperature
45°C
inverter
normal heat pump
Start
60
120
300
seconds
(R1187)
„ Even during extreme cold weather, the high capacity is achieved. It is maintained even when
the outdoor air temperature is 2°C.
„ Comfortable air conditioning
A detailed adjustment is integrated to ensure a fixed room temperature. It is possible to air
condition with a small room temperature variation.
„ Energy saving heating and cooling
Once the set temperature is reached, the energy saving operation enables to maintain the
room temperature at low power.
Frequency Limits
The following table shows the functions that define the minimum and maximum frequency:
Frequency limits
Low
High
Forced Cooling
Operation
Function and Control
„
„
„
„
„
„
Limited during the activation of following functions
Four way valve operation compensation. Refer to page 40.
Input current control. Refer to page 42.
Compressor protection function. Refer to page 41.
Heating peak-cut control. Refer to page 43.
Freeze-up protection control. Refer to page 43.
Defrost control. Refer to page 45.
For more information, refer to “Forced operation mode” on page 50.
23
Main Functions
1.2
SiEBE04-507
Air Flow Direction Control
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
Louvres
The louvres, made of elastic synthetic resin, provide a wide range of airflow that guarantees a
comfortable air distribution.
Auto-Swing
The following table explains the auto swing process for heating, cooling, dry and fan :
Cooling / Dry
Vertical Swing (up and down)
Heating
Horizontal Swing
(right and left: manual)
5°
10°
45 °
50°
30°
(R4281)
COMFORT
AIRFLOW Mode
Fan
70°
65°
(R4282)
(R4283)
°
45
(R4284)
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)
24
(R4302)
Function and Control
SiEBE04-507
1.3
Main Functions
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 trouble shooting for fan motor on page 91.
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
Dry mode
20 · 25 · 35kW class :
670 - 880 rpm
(During powerful operation :
720 - 930 rpm)
(R4085)
(R4085)
= 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 rpm.
2. Fan stops during defrost operation.
3. In time of thermostat OFF, the fan rotates at the following speed.
Cooling: The fan keeps rotating at the set tap.
Heating: The fan stops.
The following drawing explains the principle for fan speed control for heating:
Thermostat
setting
DC motor: Rotation speed control
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
(R4558)
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
Function and Control
DC motor: Rotation speed control
(R4559)
25
Main Functions
1.4
SiEBE04-507
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
24ºC Room
startup
18ºC
Temperature difference
for operation stop
1.5ºC
0.5ºC
18ºC
1.0ºC
17ºC
—
ON point
Frequency
switching
point
0.5°C
OFF point
5 min
Compressor
control
LHz
Stop
*55Hz
Indoor unit fan
Extra-low air flow
Low air flow
5 min
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)
26
Function and Control
SiEBE04-507
1.5
Main Functions
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 and Control
27
Main Functions
1.6
SiEBE04-507
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)
28
Function and Control
SiEBE04-507
1.7
Main Functions
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
0.5°C
1 hour
Timer operation
Night Set Circuit ON
Temperature
setting +0.5°C
Temperature
setting
Operation stops
at the set hours
+0.5°C
Temperature shift
(R4421)
Heating Operation
2°C
Thermostat
setting
Timer operation
Night Set Circuit ON
Function and Control
1 hour later
(R1362)
29
Main Functions
1.8
Outline
SiEBE04-507
ECONO Mode
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
(R4300)
Details
„ 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 input current is under reducing control.
(Refer to " Input current control" on page 42.)
Also, the upper limit of frequency is restricted.
Upper limit of frequency
R410A
model
2.0kW
2.5kW
3.5kW
30
Cooling
Normal
ECONO
54
42
68
56
92
84
Heating
Normal
ECONO
90
58
98
76
98
84
(unit : Hz)
Function and Control
SiEBE04-507
1.9
Main Functions
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
speed
0Hz
The lower limit by detecting
human.
(Prohibition of thermostat-off)
in case of
thermostat-off
Remote controller
Intelligent Eye
ON
button
OFF
Operation
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. (COOL : 2°C higher, DRY: 1°C higher, AUTO : according to the operation mode
at that time.)
H1 In case of FAN mode, the fan speed reduces by 50 rpm.
Function and Control
31
Main Functions
SiEBE04-507
„ 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
32
„ The dry operation can’t command the setting temperature with a remote controller, but
internally the set temperature is shifted by 1°C.
Function and Control
SiEBE04-507
Main Functions
1.10 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.
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 controller.
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.
(R4606)
Function and Control
33
Main Functions
SiEBE04-507
1.11 Other Functions
1.11.1 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.
1.11.2 Signal Receiving Sign
When the indoor unit receives a signal from the remote controller, the unit emits a signal
receiving sound.
1.11.3 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.
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
22ºC
25ºC
Air flow rate
AUTO
AUTO
„ In the case of multi system operation, there are times when the unit does not activate with
this button.
1.11.4 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.
1.11.5 Mold Proof Air Filter
The air filter net is impregnated with a safe, odourless mould preventative to make the filter
virtually immune to mould.
1.11.6 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.
1.11.7 Auto-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-minutes standby function is
activated.
34
Function and Control
SiEBE04-507
Function of Thermistor
2. Function of Thermistor
2.1
Heat Pump Model
A
C
Four way valve
B
Compressor
(R3305)
A Outdoor Heat
Exchanger
Thermistor (DCB)
1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature.
The system sets a target discharge temperature according to the outdoor and indoor heat
exchanger temperature, and controls the electronic expansion valve opening so that the
target discharge temperature can be obtained.
2. The outdoor heat exchanger thermistor is used for detecting disconnection of the discharge
thermistor when cooling.
When the discharge pipe temperature becomes lower than the outdoor heat exchanger
temperature, the discharge pipe thermistor is judged as disconnected.
3. The outdoor heat exchanger thermistor is used for high pressure protection during cooling
operation.
B Discharge
Pipe Thermistor
(DOT)
1. The discharge pipe thermistor is used for controlling temperature of the discharge pipe.
If the temperature of discharge pipe (used in place of the inner temperature of the
compressor) rises abnormally, the operating frequency drops or the operation halts.
2. The discharge pipe thermistor is used for detecting disconnection of the discharge
thermistor.
C Indoor Heat
Exchanger
Thermistor (DCN)
1. The indoor heat exchanger thermistor is used for controlling target discharge temperature.
The system sets a target discharge temperature according to the outdoor and indoor heat
exchanger temperature, and controls the electronic expansion valve opening so that the
target discharge temperature can be obtained.
2. The indoor heat exchanger thermistor is used for preventing freezing.
During the cooling operation, if the temperature drops abnormally, the operating frequency
becomes lower, then the operation halts.
3. The indoor heat exchanger thermistor is used for anti-icing control.
During the cooling operation, if the heat exchanger temperature in the room where operation
is halted becomes -1°C, it is assumed as icing.
4. During heating, the indoor heat exchanger thermistor is used for detecting disconnection of
the discharge pipe thermistor.
When the discharge pipe temperature becomes lower than the indoor heat exchanger
temperature, the discharge pipe thermistor is judged as disconnected.
Function and Control
35
Function of Thermistor
2.2
SiEBE04-507
Cooling Only Model
A
C
B
Compressor
(R2828)
A Outdoor Heat
Exchanger
Thermistor (DCB)
1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature.
The system sets a target discharge temperature according to the outdoor and indoor heat
exchanger temperature, and controls the electronic expansion valve opening so that the
target discharge temperature can be obtained.
2. The outdoor heat exchanger thermistor is used for detecting disconnection of the discharge
thermistor when cooling.
When the discharge pipe temperature becomes lower than the outdoor heat exchanger
temperature, the discharge pipe thermistor is judged as disconnected.
3. The outdoor heat exchanger thermistor is used for high pressure protection during cooling
operation.
B Discharge
Pipe Thermistor
(DOT)
1. The discharge pipe thermistor is used for controlling temperature of the discharge pipe.
If the temperature of discharge pipe (used in place of the inner temperature of the
compressor) rises abnormally, the operating frequency drops or the operation halts.
2. The discharge pipe thermistor is used for detecting disconnection of the discharge
thermistor.
C Indoor Heat
Exchanger
Thermistor (DCN)
1. The indoor heat exchanger thermistor is used for controlling target discharge temperature.
The system sets a target discharge temperature according to the outdoor and indoor heat
exchanger temperature, and controls the electronic expansion valve opening so that the
target discharge temperature can be obtained.
2. The indoor heat exchanger thermistor is used for preventing freezing.
During the cooling operation, if the temperature drops abnormally, the operating frequency
becomes lower, then the operation halts.
3. The indoor heat exchanger thermistor is used for anti-icing control.
During the cooling operation, if the heat exchanger temperature in the room where operation
is halted becomes -1°C, it is assumed as icing.
36
Function and Control
SiEBE04-507
Control Specification
3. Control Specification
3.1
Mode Hierarchy
Outline
There are two modes; the mode selected in user’s place (normal air conditioning mode) and
forced operation mode for installation and providing service.
Detail
1. For heat pump model
There are following modes; stop, cooling (includes drying), heating (include defrosting)
Air conditioner control mode
Forced operating mode
Forced cooling (for Pump Down Operation)
Normal operating mode
Cooling
Heating
Defrosting
Stop mode (except for cooling/heating modes by indoor command)
Preheat operation
During C (capacitor) is discharging
Stop
(R2829)
2. For cooling only model
There are following models; stop and cooling (including drying).
Air conditioner control mode
Forced operating mode
Forced cooling (for Pump Down Operation)
Normal operating mode
Cooling
Stop mode (except for cooling modes by indoor command)
Preheat operation
During C (capacitor) is discharging
Stop
(R2830)
Note:
Function and Control
Unless specified otherwise, an indoor dry operation command must be regarded as cooling
operation.
37
Control Specification
3.2
Outline
SiEBE04-507
Frequency Control
Frequency will be determined according to the difference between room and set temperature.
The function is explained as follows.
1. How to determine frequency.
2. Frequency command from an indoor unit. (The difference between a room temperature and
the temperature set by the remote controller.)
3. Frequency command from an indoor unit.
4. Frequency initial setting.
5. PI control.
Frequency changes by PI control < repeats when frequency becomes lower
Command frequency X repeats when frequency becomes lower
Drooping function
Input current control, etc.
Upper limit frequency
FMAX
Upper limit function
Compressor protection function
Command frequency
Limit frequency
Initial frequency
PI control
Defrost control (*)
Lower limit function
Lower limit frequency
Four-way valve operating compensation, etc. (*)
FMIN
* only for heat pump model
Skip control
Target frequency
(R2831)
Detail
How to Determine Frequency
The compressor’s frequency will finally be determined by taking the following steps.
For Heat Pump Model
1. Determine command frequency
Š Command frequency will be determined in the following order of priority.
1.1 Limiting frequency by drooping function
Š Input current, discharge pipes, peak cutting, freeze-up protection, dew prevention, fin
thermistor temperature.
1.2 Limiting defrost control time
1.3 Forced cooling
1.4 Indoor frequency command
2. Determine upper limit frequency
Š Set a minimum value as an upper limit frequency among the frequency upper limits of the
following functions:
Compressor protection, input current, discharge pipes, peak cutting, freeze-up protection,
defrost.
3. Determine lower limit frequency
Š Set a maximum value as an lower limit frequency among the frequency lower limits of the
following functions:
Four way valve operating compensation, draft prevention, pressure difference upkeep.
4. Determine prohibited frequency
Š There is a certain prohibited frequency such as a power supply frequency.
For Cooling Only Model
1. Determine command frequency
Š Command frequency will be determined in the following order of priority.
1.1 Limiting frequency by drooping function
Input current, discharge pipes, freeze-up protection, dew prevention, fin thermistor temperature.
1.2 Indoor frequency command
38
Function and Control
SiEBE04-507
Control Specification
2. Determine upper limit frequency
Š Set a minimum value as an upper limit frequency among the frequency upper limits of the
following functions:
Compressor protection, input current, discharge pipes, freeze-up protection, dew prevention,
fin thermistor temperature.
3. Determine lower limit frequency
Š Set a maximum value as an lower limit frequency among the frequency lower limits of the
following functions:
Pressure difference upkeep.
4. Determine prohibited frequency
Š There is a certain prohibited frequency such as a power supply frequency.
Indoor Frequency Command (∆D signal)
The difference between a room temperature and the temperature set by the remote controller
will be taken as the “∆D signal” and is used for frequency command.
Temperature
difference
0
0.5
1.0
1.5
∆D
signal
∗Th
OFF
1
2
3
Temperature
difference
2.0
∆D
signal
4
Temperature
difference
4.0
∆D
signal
8
Temperature
difference
6.0
∆D
signal
C
2.5
3.0
3.5
5
6
7
4.5
5.0
5.5
9
A
B
6.5
7.0
7.5
D
E
F
∗Th OFF = Thermostat OFF
Frequency Initial Setting
<Outline>
When starting the compressor, or when conditions are varied due to the change of the room, the
frequency must be initialized according to the ∆D value of the indoor unit and the Q value of the
indoor unit.
Q value: Indoor unit output determined from indoor unit volume, air flow rate and other factors.
PI Control (Determine Frequency Up / Down by ∆D Signal)
1. P control
Calculate ∆D value in each sampling time (20 seconds), and adjust the frequency according
to its difference from the frequency previously calculated.
2. I control
If the operating frequency is not change more than a certain fixed time, adjust the frequency
up and down according to the ∆D value, obtaining the fixed ∆D value.
When the ∆D value is small...lower the frequency.
When the ∆D value is large...increase the frequency.
3. Frequency management when other controls are functioning
Š When frequency is drooping;
Frequency management is carried out only when the frequency droops.
Š For limiting lower limit
Frequency management is carried out only when the frequency rises.
4. Upper and lower limit of frequency by PI control
The frequency upper and lower limits are set depending on indoor unit.
When low noise commands come from the indoor unit or when outdoor unit low noise or
quiet commands come from indoor unit, the upper limit frequency must be lowered than the
usual setting.
Function and Control
39
Control Specification
3.3
SiEBE04-507
Controls at Mode Changing / Start-up
3.3.1 Preheating Operation
Outline
Operate the inverter in the open phase operation with the conditions including the preheating
command from the discharge pipe temperature.
Detail
Preheating ON Condition
Š When the discharge pipe temperature is below 10ºC, inverter in open phase operation
starts.
OFF Condition
Š When the discharge pipe temperature is higher than 12ºC, inverter in open phase operation
stops.
3.3.2 Four Way Valve Switching
Outline of
Heating
Operation
Heat Pump Only
During the heating operation current must be conducted and during cooling and defrosting
current must not be conducted. In order to eliminate the switching sound (as the four way valve
coil switches from ON to OFF) when the heating is stopped, the delay switch of the four way
valve must be carried out after the operation stopped.
Detail
The OFF delay of four way valve
Energize the coil for 160 sec after unit operation is stopped.
3.3.3 Four Way Valve Operation Compensation
Outline
Heat Pump Only
At the beginning of the operation as the four way valve is switched, acquire the differential
pressure required for activating the four way valve by having output the operating frequency,
which is more than a certain fixed frequency, for a certain fixed time.
Detail
Starting Conditions
1. When starting compressor for heating.
2. When the operating mode changes to cooling from heating.
3. When starting compressor for rushing defrosting or resetting.
4. When starting compressor for the first time after the reset with the power is ON.
5. When starting compressor for heating next to the suspension of defrosting.
6. When starting compressor next to the fault of switching over cooling / heating.
Set the lower limit frequency (cooling : 68Hz, heating : 66Hz) for 45 seconds with any conditions
1 through 4 above.
40
Function and Control
SiEBE04-507
Control Specification
3.3.4 3-minutes Standby
Prohibit to turn ON the compressor for 3 minutes after turning it off.
(Except when defrosting. (Only for Heat Pump Model).)
3.3.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency must be set as
follows. (The function must not be used when defrosting (only for heat pump model).)
3.4
FCG 3
FCG 2
88
64
FCG 1
TCG 1
48
240
TCG 2
TCG 3
360
180
Frequency
FCG3
FCG2
FCG1
TCG1sec TCG2sec
Time
TCG3sec
(R2949)
Discharge Pipe Control
Outline
The discharge pipe temperature is used as the compressor's internal temperature. If the
discharge pipe temperature rises above a certain level, the operating frequency upper limit is
set to keep this temperature from going up further.
Detail
Divide the Zone
Stop zone 110°C
105°C
101°C
Drooping zone
Keep zone
99°C
Up zone
Heat exchanger
thermistor
temperature
Reset zone 97°C
(R4270)
Management within the Zones
Zone
Stop zone
Drooping zone
Keep zone
Return / Reset zone
Function and Control
Control contents
When the temperature reaches the stop zone, stop the compressor and
correct abnormality.
Start the timer, and the frequency will be drooping.
Keep the upper limit of frequency.
Cancel the upper limit of frequency.
41
Control Specification
3.5
Outline
SiEBE04-507
Input Current Control
The microcomputer calculates the input current during the compressor is running, and set the
frequency upper limit from such input current.
In case of heat pump model, this control is the upper limit control function of the frequency
which takes priority of the lower limit of four way valve activating compensation.
Detail
Compressor Stop
I4
Stop Zone
I3
Drooping Zone
I3 –Iα
Keep Zone
Reset Zone
(R4304)
Frequency control in each zone
Drooping zone
Š The maximum limit of the compressor frequency in this control is defined as operation
frequency – 2Hz.
Š After this, the output frequency is pulled down by 2Hz every second until it reaches the
steady zone.
Keep zone
Š The present maximum frequency goes on.
Reset zone
Š Limit of the frequency is cancelled.
Stop zone
Š After 2.5 s in this zone, the compressor is stopped.
I4
I3
(A)
(A)
I3-Iα (A)?
Normal mode
ECONO mode
Normal mode
ECONO mode
Cooling
20/25 class
35 class
12
6.0
7.25
4.25
5.0
5.25
6.5
3.5
4.25
Heating
20/25 class
35 class
12
7.5
8.25
5.25
5.75
6.75
7.5
4.5
5.0
Limitation of current drooping and stop value according to the outdoor air temperature
1. In case the operation mode is cooling
Š The current droops when outdoor air temperature becomes higher than a certain level
(model by model).
2. In case the operation mode is heating (only for heat pump model)
Š The current droops when outdoor air temperature becomes higher than a certain level
(model by model).
42
Function and Control
SiEBE04-507
3.6
Control Specification
Freeze-up Protection Control
Outline
During cooling operation, the signals being sent from the indoor unit allow the operating
frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from
the indoor unit must be divided into the zones as the followings.
Detail
Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec from
operation start.
Control in Each Zone
Heat exchanger
thermistor temperature
Return from stop
13°C
Reset zone
7°C
Up zone
5°C
Keep zone
3°C
0°C
Drooping zone
Stop zone
(R4561)
3.7
Heating Peak-cut Control
Outline
Heat Pump Only
During heating operation, the signals being sent from the indoor unit allow the operating
frequency limitation and prevent abnormal high pressure. (The signal from the indoor unit must
be divided as follows.)
Detail
Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec. from
operation start.
Control in Each Zone
The heat exchange intermediate temperature of indoor unit controls the following.
Stop zone 65°C
56°C
53°C
51°C
Heat exchanger
thermistor
temperature
Drooping zone
Keep zone
Up zone
Reset zone 46°C
(R4589)
Function and Control
43
Control Specification
3.8
SiEBE04-507
Fan Control
Outline
Fan control is carried out with following functions.
1. Fan control when defrosting
2. Fan OFF delay when stopped
3. ON/OFF control when cooling operation
4. Fan control when forced operation
5. Fan control in low noise mode
6. Fan control during heating operation
7. Fan control in the quiet mode
8. Fan control in the powerful mode
9. Fan control for pressure difference upkeep
Detail
Fan OFF Control when Stopped
„ Fan OFF delay for 60 seconds must be made when the compressor is stopped.
3.9
Liquid Compression Protection Function 2
Outline
In order to obtain the dependability of the compressor, the compressor must be stopped
according to the conditions of the temperature of the outdoor air and outdoor heat exchanger.
Detail
„ Operation stop depending on the outdoor air temperature
Compressor operation turns OFF under the conditions that the system is in cooling operation
and outdoor air temperature is below –10°C.
44
Function and Control
SiEBE04-507
Control Specification
3.10 Defrost Control
Outline
Heat Pump Only
Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor
heat exchanger temperature must be more than its fixed value when finishing.
Detail
Conditions for Starting Defrost
The starting conditions must be made with the outdoor air temperature and heat exchanger
temperature. Under the conditions that the system is in heating operation, 6 minutes after the
compressor is started and more than 28 minutes of accumulated time pass since the start of the
operation or ending the defrosting.
Conditions for Canceling Defrost
The judgment must be made with heat exchanger temperature. (4°C-22°C)
Frequency
PI control
0Hz
60sec.
50sec.
Compressor
600sec.
50sec.
ON
OFF
Four way valve
ON
OFF
5sec.
5sec.
Fan
ON
OFF
Electronic expansion
valve opening
450pps
350pps
450pps
Initial opening
(R4014)
Function and Control
45
Control Specification
SiEBE04-507
3.11 Electronic Expansion Valve Control
Detail
The followings are the examples of control which function in each mode by the electronic
expansion valve control.
Control for abnormally high discharge
pipe temperature
The following items are included in the electronic expansion valve control.
Electronic expansion valve is fully closed
1. Electronic expansion valve is fully closed when turning on the power.
2. Pressure equalizing control
Open Control
1. Electronic expansion valve control when starting operation
2. Control when frequency changed
3. Control for defrosting (only for heat pump model)
4. Control when a discharge pipe temperature is abnormally high
5. Control when the discharge pipe thermistor is disconnected
Feedback Control
1. Discharge pipe temperature control
Control when frequency changed
Outline
Fully closed when power is turned ON
×
×
Open control when starting
×
(Control of target discharge pipe temperature)
Pressure equalizing control
×
×
Open control when starting
×
(Control of target discharge pipe temperature)
(Defrost control FD=1)
(only for heat pump model)
×
×
Pressure equalizing control
×
×
Open control when starting
×
Continue
×
×
Pressure equalizing control
×
×
Operation pattern
: function
× : not function
When power is turned ON
Cooling operation
Stop
Heating operation
(only for heat
pump model)
Stop
Heating operation
(only for heat
pump model)
Control of discharge pipe
thermistor disconnection
Stop
(R2833)
46
Function and Control
SiEBE04-507
Control Specification
3.11.1 Fully Closing with Power ON
Initialize the electronic expansion valve when turning on the power, set the opening position and
develop pressure equalizing.
3.11.2 Pressure Equalization Control
When the compressor is stopped, open and close the electronic expansion valve and develop
pressure equalization.
3.11.3 Opening Limit
Outline
Limit a maximum and minimum opening of the electronic expansion valve.
Detail
„ A maximum electronic expansion valve opening : 480 pulses
„ A minimum electronic expansion valve opening : 52 pulses
The electronic expansion valve is fully closed in the room where cooling is stopped and is
opened with fixed opening during defrosting.
3.11.4 Starting Operation Control
Control the electronic expansion valve opening when the system is starting, and prevent the
system to be super heated or moistened.
3.11.5 High Temperature of the Discharge Pipe
When the compressor is operating, if the discharge pipe temperature exceeds a certain value,
open the electronic expansion valve and remove the refrigerant to the low pressure side and
lower discharge temperature.
3.11.6 Disconnection of the Discharge Pipe Thermistor
Outline
Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature
with the condensation temperature. If any is disconnected, open the electronic expansion valve
according to the outdoor air temperature and the operating frequency and operate for a
specified time, and then stop.
After 3 minutes of waiting, restart the unit and check if any is disconnected. If any is
disconnected stop the system after operating for a specified time. If the disconnection is
detected 4 times in succession, then the system will be down.
Detail
Detect Disconnection
If the timer for open control (cooling : 13min., heating : 15min.) becomes over, and the 9-minute
timer for the compressor operation continuation is not counting time, the following adjustment
must be made.
1. When the operation mode is cooling
When the discharge pipe temperature is lower than the outdoor heat exchanger
temperature, the discharge pipe thermistor disconnection must be ascertained.
2. When the operation mode is heating (only for heat pump model)
When the discharge pipe temperature is lower than the max temperature of indoor unit heat
exchanger, the discharge pipe thermistor disconnection must be ascertained.
Adjustment when the thermistor is disconnected
When compressor stop repeats specified time, the system should be down.
Function and Control
47
Control Specification
SiEBE04-507
3.11.7 Control when frequency is changed
When the target discharge pipe temperature control is active, if the target frequency is changed
for a specified value in a certain time period, cancel the target discharge pipe temperature
control and change the target opening of the electronic expansion valve according to the shift.
3.11.8 Target Discharge Pipe Temperature Control
Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger
temperature, and adjust the electronic expansion valve opening so that the actual discharge
pipe temperature become close to that temperature. (Indirect SH control using the discharge
pipe temperature)
Set the target discharge pipe
temperature as to become an airning
SH.
SC
SH
Regard that the inclination cannot be
changed due to the operating
condition.
(R1389)
Determine a correction value of the electronic expansion valve compensation and drive it
according to the deflection of the target discharge temperature and actual discharge
temperature, and the discharge temperature variation by the 20 sec.
48
Function and Control
SiEBE04-507
Control Specification
3.12 Malfunctions
3.12.1 Sensor Malfunction Detection
Sensor malfunction may occur in the thermistor.
Relating to Thermistor Malfunction
1. Outdoor heat exchanger thermistor
2. Discharge pipe thermistor
3. Fin thermistor
4. Outdoor air thermistor
3.12.2 Detection of Overload and Over Current
Outline
In order to protect the inverter, detect an excessive output current, and for protecting
compressor, monitor the OL operation.
Detail
„ If the OL (compressor head) temperature exceeds 120°C (depending on the model),
the compressor gets interrupted.
„ If the inverter current exceeds 22 A, the compressor gets interrupted too.
3.12.3 Insufficient Gas Control
Outline
There are three ways of control to detect insufficient gas.
I Detecting by power consumption
If the power consumption is below the specified value and the frequency is higher than the
specified frequency, it is regarded as insufficient gas.
The power consumption is weak comparing with that in the normal operation when gas is
insufficient, and gas insufficiency is detected by checking a power consumption.
Power consumption
Insufficient gas zone
55 Hz
Frequency
(R2834)
II Detecting by discharge pipe temperature
If the discharge temperature is higher than the target discharge pipe temperature, and the
electronic expansion valve is fully open (480 pulses) more than the specified time, it is regarded
as insufficient gas.
Gas insufficient
zone
(R1391)
III Detecting by the difference of temperature
If the difference between inhale and exhale temperature is smaller than the specified value, it is
regarded as insufficient gas.
Function and Control
49
Control Specification
Detail
SiEBE04-507
I Judgment by power consumption
When an output frequency is exceeds 55 Hz and the input current is less than specified value,
the adjustment is made for insufficient gas.
II Judgment by discharge pipe temperature
When discharge pipe temperature is 30°C higher than target value and the electronic expansion
value opening is 480 pulses (max.), the adjustment is made for insufficient gas.
III Judgment by the difference of temperature
When the difference of the temperature is smaller than
Cooling
Heating
, it is regarded as insufficient gas.
room temperature – indoor heat exchanger temperature
outdoor heat exchanger temperature – outdoor temperature
indoor heat exchanger temperature – room temperature
outdoor temperature – outdoor heat exchanger temperature
4.0°C
4.0°C
3.0°C
3.0°C
3.13 Forced Operation Mode
Outline
Forced operating mode includes only forced cooling.
Detail
Forced Cooling
Item
Forced operation
allowing conditions
Starting/adjustment
1) Command
frequency
2) Electronic
expansion valve
opening
3) Outdoor unit
adjustment
4) Indoor unit
adjustment
End
Others
Forced Cooling
1) The outdoor unit is not abnormal
and not in the 3-minute stand-by
mode.
2) The operating mode of the outdoor
unit is the stop mode.
3) The forced operation is ON.
The forced operation is allowed when
the above “and” conditions are met.
If the forced operation switch is
pressed as the above conditions are
met.
68 Hz
It depends on the capacity of the
indoor unit.
Compressor is in operation.
The command of forced operation is
transmitted to the indoor unit.
1) When the forced operation switch is
pressed again.
2) The operation is to end
automatically after 15 min.
The protect functions are prior to all
others in the forced operation.
3.14 Additional Function
3.14.1 POWERFUL Operation Mode
Compressor operating frequency is increased to PI Max. (Max. Hz of operating room) and
outdoor unit airflow rate is increased.
3.14.2 Voltage Detection Function
Power supply voltage is detected each time equipment operation starts.
50
Function and Control
SiEBE04-507
Control Specification
3.15 Facility Setting Jumper (cooling at low outdoor
temperature)
Outline
This function is limited only for facilities (the target of air conditioning is equipment (such as
computer)). Never use it in a residence or office (the space where there is a human).
Detail
You can expand the operation range to –15°C by cutting jumper 8 (J8) on the PCB. If the
outdoor temperature falls to –20°C or lower, the operation will stop. If the outdoor temperature
rises, the operation will start again.
S90
S70
PCB
1
2
3
S80
J1
J3
J4
J5
J6
J7
J8
Cut J8 with nippers
or a similar tool
Caution
1. If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind,
provide a windbreak wall.
2. Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and
off when using facility settings.
3. Do not place humidifiers or other items which might raise the humidity in rooms where facility
settings are being used.
A humidifier might cause dew jumping from the indoor unit outlet vent.
4. Cutting jumper 8 (J8) sets the indoor fan tap to the highest position. Notify the user about
this.
Function and Control
51
Control Specification
52
SiEBE04-507
Function and Control
SiEBE04-507
Part 5
System Configuration
1. System Configuration............................................................................54
2. Instruction..............................................................................................55
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
System Configuration
Safety precautions..................................................................................55
Names of parts .......................................................................................57
Preparation before Operation.................................................................60
AUTO · DRY · COOL · HEAT · FAN Operation ......................................63
Adjusting the Air Flow Direction .............................................................65
POWERFUL Operation ..........................................................................67
OUTDOOR UNIT SILENT Operation ....................................................68
ECONO Operation .................................................................................69
INTELLIGENT EYE Operation ...............................................................70
TIMER Operation ...................................................................................72
Care and Cleaning .................................................................................74
Troubleshooting......................................................................................77
53
System Configuration
SiEBE04-507
1. System Configuration
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.
54
System Configuration
SiEBE04-507
Instruction
2. Instruction
2.1
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 WARNING and CAUTION. 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
cause property damage, personal injury or loss of life.
If you do not follow these instructions exactly, the unit may
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
controller) to get wet.
Never touch the air conditioner (including the remote
controller) 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
55
Instruction
SiEBE04-507
• 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.
56
System Configuration
SiEBE04-507
2.2
Instruction
Names of parts
Indoor Unit
1
2
3
4
5
7
11
10
9
6
8
16
14
13
15
ON/OFF
System Configuration
12
57
Instruction
SiEBE04-507
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
auto-matically switches between normal
operation and energy saving operation.
(page 17.)
8. Display
9. Air outlet
10. Flaps (horizontal blades): (page 12.)
11. Louvers (vertical blades):
• The louvers are inside of the air outlet.
(page 13.)
12. Indoor Unit ON/OFF switch: (page 10.)
• Push this switch once to start operation.
Push once again to stop it.
• The operation mode refers to the following
table.
Temperature Air flow
setting
rate
F(C)TKS COOL
22°C
AUTO
F(C)TXS AUTO
25°C
AUTO
Mode
13.
14.
15.
16.
• This switch is useful when the remote controller
is missing.
Operation lamp (green)
TIMER lamp (yellow): (page 19.)
INTELLIGENT EYE lamp (green): (page 17.)
Signal receiver:
• It receives signals from the remote controller.
• 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.
18.
19.
20.
Air inlet: (Back and side)
Air outlet
Refrigerant piping and inter-unit cable
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.
58
System Configuration
SiEBE04-507
Instruction
Remote Controller
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 (page 16.)
4. POWERFUL button:
POWERFUL operation (page 14.)
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) (page 10.)
System Configuration
8. SILENT button: OUTDOOR UNIT SILENT
operation (page 15.)
9. FAN setting button:
• It selects the air flow rate setting.
10. SWING button:
• Ajusting the Air Flow Direction. (page 12.)
11. COMFORT AIRFLOW button: COMFORT
AIRFLOW operation (page 13.)
12. SENSOR button: INTELLIGENT EYE operation (page 17.)
13. ON TIMER button: (page 20.)
14. OFF TIMER button: (page 19.)
15. TIMER Setting button:
• It changes the time setting.
16. TIMER CANCEL button:
• It cancels the timer setting.
17. CLOCK button: (page 9.)
18. RESET button:
• Restart the unit if it freezes.
• Use a thin object to push.
59
Instruction
2.3
SiEBE04-507
Preparation before Operation
To set the batteries
1. Press
with a finger and slide
the front cover to take it off.
2. Set two dry batteries (AAA).
3. Set the front cover as before.
Position + and
– correctly!
2
–
+
+
–
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 controller display begins to fade or if
reception deteriorates, please replace with new alkali batteries. Do not use manganese batteries.
• 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.
60
System Configuration
SiEBE04-507
Instruction
To operate the remote
controller
• To use the remote controller, aim the transmitter
at the indoor unit. If there is anything to block
signals between the unit and the remote
controller, such as a curtain, the unit will not
operate.
• Do not drop the remote controller. Do not get it wet.
• The maximum distance for communication is
about 7 m.
Receiver
To fix the remote controller
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 controller in the
remote controller holder.
Remote controller
holder
Set.
To remove, pull it upwards.
ATTENTION
About remote controller
• Never expose the remote controller 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 controller signals happen to operate another appliance, move that appliance to
somewhere else, or consult the shop.
System Configuration
61
Instruction
SiEBE04-507
To set the clock
1. Press “CLOCK button”.
is displayed.
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.
ECONO
POWERFUL
ON/OFF
TEMP
3. Press “CLOCK button”.
blinks.
MODE
SWING
FAN
SILENT COMFORT SENSOR
Turn the breaker ON
• Turning ON the breaker opens the flap, then
closes it again. (This is a normal procedure.)
2
ON
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.
Recommended temperature setting
• Cover windows with a blind or a curtain.
For cooling:26°C – 28°C
Blocking sunlight and air from outdoors increases the cooling (heating) effect. For heating:20°C – 24°C
• Clogged air filters cause inefficient operation and waste energy. Clean them
once in about every two weeks.
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> 10 to 46 °C
<3/4MK(X)S> –10 to 46 °C
<RK(X)S> –10 to 46 °C
Indoor temperature: 18 to 32 °C
Indoor humidity: 80% max.
Outdoor temperature: <2MXS> –10 to 21 °C
<3/4MXS> –15 to 21 °C
<RXS> –15 to 21 °C
Indoor temperature: 10 to 30 °C
Outdoor temperature: <2MK(X)S> 10 to 46 °C
<3/4MK(X)S> –10 to 46 °C
<RK(X)S> –10 to 46 °C
Indoor temperature: 18 to 33 °C
Indoor humidity: 80% max.
If operation is continued out of this range
• A safety device may work to stop the operation.
(In multi system, it may work to stop the operation of the
outdoor unit only.)
• Condensation may occur on the indoor unit and drip.
• A safety device may work to stop the operation.
• A safety device may work to stop the operation.
• Condensation may occur on the indoor unit and drip.
• Operation outside this humidity or temperature range may cause a safety device to disable the system.
62
System Configuration
SiEBE04-507
2.4
Instruction
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
1. Press “MODE selector button”
and select a operation mode.
• Each pressing of the button advances the
mode setting in sequence.
4
ECONO
: AUTO
POWERFUL
ON/OFF
TEMP
2, 3
1
: DRY
: COOL
MODE
SWING
FAN
SILENT COMFORT SENSOR
: HEAT
: FAN
5
ON
<F(C)TKS>
CANCEL
OFF
TIMER
<F(C)TXS>
2. Press “ON/OFF button”.
• The OPERATION lamp lights up.
To stop operation
3. Press “ON/OFF button” again.
• The 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
System Configuration
63
Instruction
SiEBE04-507
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 “
plus “
” “
” to “
”
” are available.
The air flow rate setting is not variable.
• 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 capacity when the air flow rate 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
usersetting 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.
64
System Configuration
SiEBE04-507
2.5
Instruction
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
thedesired position, press
“SWING button” once more.
The display will go blank.
The flaps will stop moving.
ECONO
POWERFUL
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
System Configuration
65
Instruction
SiEBE04-507
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 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, 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
66
System Configuration
SiEBE04-507
2.6
Instruction
POWERFUL Operation
POWERFUL operation quickly maximizes the cooling
(heating) effect in any operation mode. You can get the
maximum capacity .
To start POWERFUL
operation
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.
• “
” is displayed on the LCD.
To cancel POWERFUL
operation
2. Press “POWERFUL button” again.
• “
” disappears from the LCD.
ECONO
POWERFUL
ON/OFF
TEMP
1, 2
MODE
SWING
FAN
SILENT COMFORT SENSOR
ON
CANCEL
OFF
TIMER
NOTE
Notes on POWERFUL operation
• POWERFUL Operation cannot be used together with ECONO, SILENT, or COMFORT
Operation. After-press priority is given.
• POWERFUL 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.
• 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 2.5°C and the air flow rate is slightly increased.
• In FAN mode
The air flow rate is fixed to the maximum setting.
System Configuration
67
Instruction
2.7
SiEBE04-507
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
1. Press “SILENT button”.
• “
” is displayed on the LCD.
ECONO
To cancel OUTDOOR UNIT
SILENT operation
POWERFUL
2. Press “SILENT button” again.
• “
ON/OFF
TEMP
MODE
SWING
FAN
SILENT COMFORT SENSOR
” disappears from the LCD.
1, 2
ON
CANCEL
OFF
TIMER
NOTE
Note on OUTDOOR UNIT SILENT operation
• 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.
68
System Configuration
SiEBE04-507
2.8
Instruction
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 on 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.
System Configuration
69
Instruction
2.9
SiEBE04-507
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 on 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.
70
System Configuration
SiEBE04-507
Instruction
“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 (page 19.) 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.
System Configuration
71
Instruction
SiEBE04-507
2.10 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
• Check that the clock is correct.
If not, set the clock to the present time.
(page 9.)
1. Press “OFF TIMER button”.
is displayed.
ECONO
POWERFUL
ON/OFF
TEMP
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.
MODE
SWING
FAN
SILENT COMFORT SENSOR
ON
CANCEL
2
4
OFF
TIMER
1, 3
3. Press “OFF TIMER button” again.
• The TIMER lamp lights up.
To cancel the OFF TIMER operation
4. Press “CANCEL button”.
• The TIMER lamp goes off.
Note
• 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 controller batteries are replaced.)
• When operating the unit via the ON/OFF Timer, the actual length of operation may vary from the time
entered by the 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.
72
System Configuration
SiEBE04-507
Instruction
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”.
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.
ECONO
POWERFUL
ON/OFF
TEMP
MODE
SWING
FAN
SILENT COMFORT SENSOR
• The TIMER lamp lights up.
1, 3
ON
CANCEL
4
OFF
TIMER
2
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 controller.
System Configuration
73
Instruction
SiEBE04-507
2.11 Care and Cleaning
CAUTION
Before cleaning, be sure to stop the operation and
turn the breaker OFF.
Units
Indoor unit, Outdoor unit and Remote controller
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.
74
System Configuration
SiEBE04-507
Instruction
Filters
1. Open the front panel. (page 23.)
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
75
Instruction
SiEBE04-507
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 controller.
4. Turn OFF the breaker for the room air conditioner.
76
System Configuration
SiEBE04-507
Instruction
2.12 Troubleshooting
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
he 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
77
Instruction
SiEBE04-507
Check again.
Please check again before calling a repair person.
Check
Case
The air conditioner does not
operate.
(OPERATION lamp is off)
• Hasn’t a breaker turned OFF or a fuse blown?
• Isn’t it a power failure?
• Are batteries set in the remote controller?
• Is the timer setting correct?
Cooling (Heating) effect is poor.
• 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?
(page 17.)
78
Operation stops suddenly.
(OPERATION lamp flashes.)
• Are the air filters clean?
An abnormal functioning
happens during operation.
• 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 controller.
• 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 controller. If the lamp still flashes,
call the service shop where you bought the air conditioner.
System Configuration
SiEBE04-507
Instruction
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
Dismantling of the unit, treatment of the refrigerant, oil and eventual other parts, should be done in
accordance with the relevant local and national regulations.
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
79
Instruction
SiEBE04-507
Fault diagnosis.
FAULT DIAGNOSIS BY REMOTE CONTROLLER
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.
ECONO
POWERFUL
” indication flashes on the
ON/OFF
TEMP
MODE
FAN
SWING
SILENT COMFORT SENSOR
ON
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
UA
U0
U2
U4
A1
A5
A6
C4
C7
C9
EA
E1
E5
E6
E7
F3
F6
H0
H6
H8
H9
J3
J6
L3
L4
L5
P4
MEANING
NORMAL
INDOOR-OUTDOOR UNIT COMBINATION FAULT
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
FRONT PANEL OPEN/CLOSE FAULT
FAULTY SUCTION AIR TEMPERATURE SENSOR
COOLING-HEATING SWITCHING ERROR
CIRCUIT BOARD FAULT
OL STARTED
FAULTY COMPRESSOR START UP
DC FAN MOTOR FAULT
HIGH TEMPERATURE DISCHARGE PIPE CONTROL
HIGH PRESSURE CONTROL (IN COOLING)
SENSOR FAULT
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
ELECTRICAL PARTS HEAT FAULT
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.
3P142629-1
80
System Configuration
SiEBE04-507
Part 6
Service Diagnosis
1.
2.
3.
4.
Caution for Diagnosis............................................................................82
Problem Symptoms and Measures .......................................................83
Service Check Function ........................................................................84
Troubleshooting ....................................................................................87
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
4.15
4.16
4.17
4.18
4.19
4.20
4.21
4.22
4.23
4.24
Error Codes and Description ..................................................................87
Indoor Unit PCB Abnormality .................................................................88
Freeze-up Protection Control or High Pressure Control.........................89
Fan Motor (DC Motor) or Related Abnormality.......................................91
Thermistor or Related Abnormality (Indoor Unit)....................................93
Signal Transmission Error (between Indoor and Outdoor Unit) .............94
Unspecified Voltage (between Indoor and Outdoor Units) .....................95
Outdoor Unit PCB Abnormality...............................................................96
OL Activation (Compressor Overload) ...................................................97
Compressor Lock ...................................................................................98
DC Fan Lock ..........................................................................................99
Input Over Current Detection ...............................................................100
Four Way Valve Abnormality................................................................101
Discharge Pipe Temperature Control...................................................103
High Pressure Control in Cooling .........................................................104
Compressor System Sensor Abnormality ............................................106
Position Sensor Abnormality ................................................................107
DC Voltage / Current Sensor Abnormality............................................108
Thermistor or Related Abnormality (Outdoor Unit)...............................109
Electrical Box Temperature Rise..........................................................111
Radiation Fin Temperature Rise ..........................................................113
Output Over Current Detection.............................................................115
Insufficient Gas.....................................................................................117
Over-voltage Detection.........................................................................119
5. Check ..................................................................................................120
5.1 How to Check .......................................................................................120
Service Diagnosis
81
Caution for Diagnosis
SiEBE04-507
1. Caution for Diagnosis
The operation lamp flashes 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
Indicator lamps
TIMER lamp (yellow)
Operation lamp (green)
INTELLIGENT EYE lamp (green)
ON/OFF
ON/OFF button
(R4285)
Troubleshooting
with LED
Indication
82
The outdoor unit has one green LED (LEDA) on the PCB. The flashing green LED indicates
normal condition of microcomputer operation.
Service Diagnosis
SiEBE04-507
Problem Symptoms and Measures
2. Problem Symptoms and Measures
Symptom
Check Item
Details of Measure
None of the Units
Operates.
Check the power supply.
Check to make sure that the rated voltage is
supplied.
Check to make sure that the indoor unit type is
compatible with the outdoor unit.
Heating operation cannot be used when the
outdoor air temperature is 20°C or higher (only
for heat pump model), and cooling operation
cannot be used when the outdoor air
temperature is below –10°C.
—
Check the type of the indoor units.
Check the outdoor air temperature.
Diagnosis with remote controller
indication
Check the remote controller
addresses.
Operation Sometimes
Stops.
Check the power supply.
Check the outdoor air temperature.
Check to make sure that address settings for
the remote controller and indoor unit are
correct.
A power failure of 2 to 10 cycles can stop air
conditioner operation. (Operation lamp OFF)
Heating operation cannot be used when the
outdoor air temperature is 20°C or higher (only
for heat pump model), and cooling operation
cannot be used when the outdoor air
temperature is below –10°C.
—
Diagnosis with remote controller
indication
Equipment operates but
Check for wiring and piping errors in Conduct the wiring/piping error check described
does not cool, or does not the indoor and outdoor units
on the product diagnosis nameplate.
heat (only for heat pump
connection wires and pipes.
model).
Check for thermistor detection errors. Check to make sure that the main unit’s
thermistor has not dismounted from the pipe
holder.
Check for faulty operation of the
Set the units to cooling operation, and compare
electronic expansion valve.
the temperatures of the liquid side connection
pipes of the connection section among rooms to
check the opening and closing operation of the
electronic expansion valves of the individual
units.
Diagnosis with remote controller
—
indication
Diagnosis by service port pressure
Check for insufficient gas.
and operating current
Large Operating Noise and Check the output voltage of the
—
Vibrations
power transistor.
Check the power transistor.
—
Check the installation condition.
Check to make sure that the required spaces
for installation (specified in the Technical
Guide, etc.) are provided.
Service Diagnosis
Reference
Page
—
—
—
87
—
—
—
87
—
—
—
87
124
125
—
—
83
Service Check Function
SiEBE04-507
3. Service Check Function
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
SWING
FAN
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
Note:
84
Code
00
U4
L5
E6
H6
H0
A6
E7
U0
F3
A5
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
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.
Service Diagnosis
SiEBE04-507
Service Check Function
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)
Service Diagnosis
85
Service Check Function
SiEBE04-507
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.
(Error codes and description → Refer to page 87.)
8. Exit from the diagnosis mode.
Press the MODE button.
(R4278)
86
Service Diagnosis
SiEBE04-507
Troubleshooting
4. Troubleshooting
4.1
Error Codes and Description
Code Indication Description
System
Indoor
Unit
Outdoor
Unit
00
U0H
U2
U4
UA
A1
A5
A6
C4
C9
E1
E5H
E6H
E7
E8
EA
F3
F6
H0
H6
H8
H9
J3
J6
L3
L4
L5
P4
Normal
Reference
Page
—
Insufficient gas
117
Over-voltage detection
119
Signal transmission error (between indoor and outdoor unit)
94
Unspecified voltage (between indoor and outdoor unit)
95
Indoor unit PCB abnormality
88
Freeze-up protection control or high pressure control
89
Fan motor or related abnormality
91
Heat exchanger temperature thermistor abnormality
93
Room temperature thermistor abnormality
93
Outdoor unit PCB abnormality
96
OL activation (compressor overload)
97
Compressor lock
98
DC fan lock
99
Input over current detection
100
Four way valve abnormality
101
Discharge pipe temperature control
103
High pressure control in cooling
104
Compressor system sensor abnormality
106
Position sensor abnormality
107
DC voltage/current sensor abnormality
108
Outdoor air thermistor or related abnormality
109
Discharge pipe temperature thermistor or related abnormality
109
Heat exchanger temperature thermistor or related abnormality
109
Electrical box temperature rise
111
Radiation fin temperature rise
113
Output over current detection
115
Heat radiation fin thermistor or related abnormality
109
H: Displayed only when system-down occurs.
Service Diagnosis
87
Troubleshooting
4.2
SiEBE04-507
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
YES
Correct connections.
Replace PCBs.
(R1400)
Note:
Connector Nos. vary depending on models.
Model Type
Connector No.
Wall Mounted Type 20 / 25 / 35 class Terminal strip~Control PCB
88
Service Diagnosis
SiEBE04-507
4.3
Troubleshooting
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.)
„ 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
„
„
„
„
„
Service Diagnosis
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.
89
Troubleshooting
SiEBE04-507
Troubleshooting
Check No.6
Refer to P.122
Caution
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. 6
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).
(R1401)
90
Service Diagnosis
SiEBE04-507
4.4
Troubleshooting
Fan Motor (DC Motor) or Related Abnormality
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
„
„
„
„
„
Service Diagnosis
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.
91
Troubleshooting
SiEBE04-507
Troubleshooting
Caution
Check No.01
Refer to P.120
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn off power supply
and rotate fan by hand.
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.
YES
Is motor
control power voltage
DC 15V
generated?
NO
Replace indoor
unit PCB.
YES
Turn off power supply and
disconnect fan motor
connector, then turn
power ON again.
Check No.01
Check output of fan
motor connector
Is rotation
number command
voltage DC 1~6V
generated?
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.
Replace indoor
unit PCB.
Replace fan motor.
Replace indoor
unit PCB.
(R3098)
92
Service Diagnosis
SiEBE04-507
4.5
Troubleshooting
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.6
Refer to P.122
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. 6
Thermistor resistance check
Is it normal?
NO
YES
Replace the thermistor.
(Replace the indoor unit PCB.)
Replace the indoor unit PCB.
(R1403)
C4 : Heat exchanger thermistor
C9 : Room temperature thermistor
Service Diagnosis
93
Troubleshooting
4.6
SiEBE04-507
Signal Transmission Error (between Indoor and Outdoor
Unit)
Remote
Controller
Display
U4
Method of
Malfunction
Detection
The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is
checked whether it is normal.
Malfunction
Decision
Conditions
When the data sent from the outdoor unit cannot be received normally, or when the content of
the data is abnormal.
Supposed
Causes
„
„
„
„
„
Faulty outdoor unit PCB.
Faulty indoor unit PCB.
Indoor unit-outdoor unit signal transmission error due to wiring error.
Indoor unit-outdoor unit signal transmission error due to disturbed power supply waveform.
Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection
wires between the indoor and outdoor units (wire No. 2).
Troubleshooting
Caution
Check No.10
Refer to P.124
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the indoor unit-outdoor unit
connection wires.
Is there any wiring error?
YES
Correct the indoor unit-outdoor
unit connection wires.
NO
Check the outdoor unit's LED A.
Is LED A flashing?
NO
Diagnose the outdoor unit.
YES
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. 10
Check power supply waveform.
Is there any disturbance?
YES
94
NO
Replace indoor unit control
PCB .
Locate the cause of the
disturbance of the power supply
waveform, and correct it.
(R2840)
Service Diagnosis
SiEBE04-507
4.7
Troubleshooting
Unspecified Voltage (between Indoor and Outdoor Units)
Remote
Controller
Display
UA
Method of
Malfunction
Detection
The supply power is detected for its requirements (different from pair type and multi type) by the
indoor / outdoor transmission signal.
Malfunction
Decision
Conditions
The pair type and multi type are interconnected.
Supposed
Causes
„
„
„
„
Wrong models interconnected
Wrong indoor unit PCB mounted
Indoor unit PCB defective
Wrong outdoor unit PCB mounted or defective
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the indoor and outdoor unit
model numbers.
Indoor unit and outdoor unit
matched?
NO
Match the compatible
models.
YES
Check the code numbers
(2P01234, for example) of the
indoor and outdoor unit PC boards
with the Parts List.
Matched compatibly?
YES
Service Diagnosis
NO
Change for the specified
PC board (1) or (2).
Replace the indoor unit PC
board (1) (or the outdoor
unit PC board).
(Q0347)
95
Troubleshooting
4.8
SiEBE04-507
Outdoor Unit PCB Abnormality
Remote
Controller
Display
E1
Method of
Malfunction
Detection
„ The system follows the microprocessor program to make sure it runs normally.
„ The system checks to see if the zero-cross signal comes in properly.
Malfunction
Decision
Conditions
„ The microprocessor program runs out of control.
„ The zero-cross signal is not detected.
Supposed
Causes
„ The microcomputer is out of control due to external factors.
Š Noise
Š Momentary voltage drop
Š Momentary power failure, etc.
„ Outdoor unit PCB defective
„ Broken harness between PCBs
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn on the power again.
Is LED A flashing?
NO
Replace the outdoor unit
PCB (1).
YES
Check to see if the system is
grounded.
Grounded?
NO
Ground the system.
YES
Is the harness
broken?
YES
NO
Zero-cross signal
abnormality. Replace the
outdoor unit PCB (2).
Replace the harness.
(R4563)
96
Service Diagnosis
SiEBE04-507
4.9
Troubleshooting
OL Activation (Compressor Overload)
Remote
Controller
Display
E5
Method of
Malfunction
Detection
A compressor overload is detected through compressor OL.
Malfunction
Decision
Conditions
„ If the compressor OL is activated twice, the system will be shut down.
„ The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
∗ The operating temperature condition is not specified.
Supposed
Causes
„
„
„
„
„
„
Refrigerant shortage
Four way valve malfunctioning
Outdoor unit PCB defective
Water mixed in the local piping
Electronic expansion valve defective
Stop valve defective
Troubleshooting
Check No.4
Refer to P.120
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Discharge pipe thermistor
disconnected?
Check No.5
Refer to P.121
Check No.11
Refer to P.124
Insert the thermistor in
position.
NO
Check No. 6
Check the thermistors
Check No.6
Refer to P.122
YES
Malfunctioning
∗ Discharge pipe thermistor
Replace the discharge pipe
thermistor.
Functioning
Check No. 4
Check the electronic expantion
valve.
Malfunctioning
Replace the valve itself or
the coil.
Functioning
Check No. 5
Check the four way valve.
Malfunctioning
Functioning
Check No. 11
Check the refrigerant line.
Functioning
Malfunctioning
∗ Refrigerant shortage
∗ Water mixed
∗ Stop valve defective
Replace the four way valve
coil or the valve itself.
Replace the outdoor unit
PCB.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R2841)
Service Diagnosis
97
Troubleshooting
SiEBE04-507
4.10 Compressor Lock
E6
Remote
Controller
Display
Method of
Malfunction
Detection
A compressor lock is detected by checking the compressor running condition through the
position detection circuit.
Malfunction
Decision
Conditions
„ The system judges the compressor lock, and stops due to over current.
„ The system judges the compressor lock, and cannot operation with position detection within
15 seconds after start up.
„ The system will be shut down if the error occurs 16 times.
„ Clearing condition: Continuous run for about 10 minutes (normal)
Supposed
Causes
„ Compressor locked
„ Compressor harness disconnected
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn off the power. Disconnect the
harnesses U, V and W.
∗ Inverter checker
Part No.: 1225477
Check with the inverter checker (∗).
Normal?
NO
YES
Turn off the power and reconnect
the harnesses. Turn on the power
again and get the system restarted.
Emergency stop
without compressor
running?
YES
Correct the power supply or
replace the SPM.
(Replace the outdoor unit
PCB.)
Replace the compressor.
NO
System shut
down after errors repeated
several times?
NO
YES
Check the electronic
expansion valve.
Replace it as required.
Replace the compressor.
(R2842)
Note:
98
If the model doesn’t have SPM, replace the outdoor unit PCB.
Service Diagnosis
SiEBE04-507
Troubleshooting
4.11 DC Fan Lock
Remote
Controller
Display
E7
Method of
Malfunction
Detection
A fan motor or related error is detected by checking the high-voltage fan motor rpm being
detected by the Hall IC.
Malfunction
Decision
Conditions
„ The fan does not start in 30 seconds even when the fan motor is running.
„ The system will be shut down if the error occurs 16 times.
„ Clearing condition: Continuous run for about 10 minutes (normal)
Supposed
Causes
„ Fan motor breakdown
„ Harness or connector disconnected between fan motor and PCB or in poor contact
„ Foreign matters stuck in the fan
Troubleshooting
Caution
Check No.15
Refer to P.125
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Fan motor connector
disconnected?
YES
Turn off the power and
reconnect the connector.
NO
Foreign matters in or
around the fan?
YES
Remove.
NO
Get started.
Check No. 15
Check the outdoor unit PCB rpm
pulse input.
Pulse signal inputted?
NO
Replace the outdoor unit
fan motor.
YES
Replace the outdoor unit
PCB.
(R2843)
Service Diagnosis
99
Troubleshooting
SiEBE04-507
4.12 Input Over Current Detection
E8
Remote
Controller
Display
Method of
Malfunction
Detection
An input over-current is detected by checking the input current value with the compressor
running.
Malfunction
Decision
Conditions
„ The following current with the compressor running continues for 2.5 seconds.
Cooling / Heating: Above 12A
Supposed
Causes
„
„
„
„
„
Over-current due to compressor failure
Over-current due to defective power transistor
Over-current due to defective outdoor unit PCB
Error detection due to outdoor unit PCB
Over-current due to short-circuit
Troubleshooting
Caution
Check No.7
Refer to P.123
Check No.8
Refer to P.123
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and
reconnected for part replacement, for example, and the system is interrupted by an input over-current,
take the following procedure.
Get restarted and measure the
input current.
Input current flowing
above its stop level?
NO
Replace the outdoor unit
PCB.
YES
Turn off the power and disconnect
the harnesses U, V and W.
∗ Inverter checker
Part No.: 1225477
Check with the inverter checker (∗).
Any LED off?
YES
NO
Turn off the power, and reconnect
the harnesses. Turn on the power
again and get restarted.
Correct the power supply or
replace the SPM.
(Replace the outdoor unit
PCB.)
Check No. 8
Check the discharge pressure.
Check No. 7
Check the installation condition.
(R2952)
Note:
100
If the model doesn’t have SPM, replace the outdoor unit PCB.
Service Diagnosis
SiEBE04-507
Troubleshooting
4.13 Four Way Valve Abnormality
Remote
Controller
Display
EA
Method of
Malfunction
Detection
The indoor air temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor
temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if
they function within their normal ranges in the operating mode.
Malfunction
Decision
Conditions
A following condition continues over 10 minute after operating 5 minutes.
„ Cooling / dry operation
(room temp. – indoor heat exchanger temp.) < –5°C
„ Heating
(indoor unit heat exchanger temp. – room temp.) < –5°C
Supposed
Causes
„
„
„
„
„
„
„
Service Diagnosis
Connector in poor contact
Thermistor defective
Outdoor unit PCB defective
Four way valve coil or harness defective
Four way valve defective
Foreign substance mixed in refrigerant
Insufficient gas
101
Troubleshooting
SiEBE04-507
Troubleshooting
Caution
Check No.5
Refer to P.121
Check No.6
Refer to P.122
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Four way valve coil
disconnected (loose)?
Correct.
NO
Harness out of connector?
Check No.11
Refer to P.124
YES
YES
Reconnect.
NO
Check the continuity of the four
way valve coil and harness.
Disconnect the
harness from
the connector.
Resistance between
harnesses about
3kΩ±0.5kΩ?
NO
Replace the four way valve
coil.
YES
Check No. 5
Check the four way valve
switching output.
Malfunctioning
Replace the outdoor unit
PCB.
Functioning
Any thermistor disconnected?
YES
Reconnect in position.
NO
Check No. 6
Check the thermistors.
Malfunctioning
Replace a defective
thermistor.
Functioning
Check No. 11
Check the refrigerant line.
Functioning
Malfunctioning
Insufficient gas
Water mixed
Stop valve defective
Refer to the refrigerant line
check procedure.
Replace the four way valve
(defective or dust-clogged).
(R3040)
102
Service Diagnosis
SiEBE04-507
Troubleshooting
4.14 Discharge Pipe Temperature Control
Remote
Controller
Display
F3
Method of
Malfunction
Detection
The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the
temperature being detected by the discharge pipe thermistor.
Malfunction
Decision
Conditions
„ If a stop takes place 4 times successively due to abnormal discharge pipe temperature, the
system will be shut down.
„ If the temperature being detected by the discharge pipe thermistor rises above
°C, the
compressor will stop. (The error is cleared when the temperature has dropped below
°C.)
Stop temperatures
(1) above 45Hz (rising), above 40Hz (dropping)
(2) 30~45Hz (rising), 25~40Hz (dropping)
(3) below 30Hz (rising), below 25Hz (dropping)
110
105
99
97
92
86
„ The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
Supposed
Causes
„ Refrigerant shortage
„ Four way valve malfunctioning
„ Discharge pipe thermistor defective
(heat exchanger or outdoor air temperature thermistor defective)
„ Outdoor unit PCB defective
„ Water mixed in the local piping
„ Electronic expansion valve defective
„ Stop valve defective
Troubleshooting
Caution
Check No.4
Refer to P.120
Check No.6
Refer to P.122
Check No.11
Refer to P.124
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check No. 6
Check the thermistors.
Functioning
Check No. 4
Check the electronic expansion
valve.
Malfunctioning
Discharge pipe thermistor
Outdoor unit heat exchanger thermistor
Outdoor temperature thermistor
Malfunctioning
Replace a defective
thermistor.
Replace the valve itself or
the coil.
Functioning
Check No. 11
Check the refrigerant line.
Functioning
Malfunctioning
Refrigerant shortage
Four way valve malfunctioning
Water mixed
Stop valve defective
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R2846)
Service Diagnosis
103
Troubleshooting
SiEBE04-507
4.15 High Pressure Control in Cooling
Remote
Controller
Display
F6
Method of
Malfunction
Detection
High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the
temperature being sensed by the heat exchanger thermistor exceeds the limit.
Malfunction
Decision
Conditions
Activated when the temperature being sensed by the heat exchanger thermistor rises above
65°C. (The error is cleared when the temperature drops below 54°C.)
Supposed
Causes
„
„
„
„
„
„
„
104
The installation space is not large enough.
Faulty outdoor unit fan
Faulty electronic expansion valve
Faulty defrost thermistor
Faulty outdoor unit PCB
Faulty stop valve
Dirty heat exchanger
Service Diagnosis
SiEBE04-507
Troubleshooting
Troubleshooting
Caution
Check No.4
Refer to P.120
Check No.6
Refer to P.122
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the installation space.
Check No.7
Installation condition
check
Abnormal
Normal
Check No.7
Refer to P.123
Check No.9
Outdoor fan check
Abnormal
Normal
Check No.9
Refer to P.124
Change the air outlet grille
position.
Change the installation
location.
Clean the heat exchanger.
Replace the fan motor.
Repair the connector or fan
motor lead wires.
Check No.4
Electronic expansion valve check
Judgment
Abnormal
Replace the electronic
expansion valve or coil.
Replace the PCB.
Normal
Check No.6
Heat exchanger thermistor check
Judgment
Abnormal
Replace the heat exchanger
thermistor.
Normal
Replace PCB.
(R2855)
Service Diagnosis
105
Troubleshooting
SiEBE04-507
4.16 Compressor System Sensor Abnormality
Remote
Controller
Display
HO
Method of
Malfunction
Detection
„ The system checks the DC current before the compressor starts.
Malfunction
Decision
Conditions
„ If the DC current before compressor start-up is out of the range 0.5-4.5 V (sensor output
converted to voltage value) or if the DC voltage before compressor start-up is below 50 V.
Supposed
Causes
„ PCB defective
„ Broken or poorly connected harness
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the harness S30.
Is the harness broken?
YES
Replace the harness.
NO
Turn off the power and turn it
on again.
Get restarted and error
displayed again?
NO
No problem. Keep on
running.
YES
Replace the PCB (2).
(R4564)
106
Service Diagnosis
SiEBE04-507
Troubleshooting
4.17 Position Sensor Abnormality
Remote
Controller
Display
H6
Method of
Malfunction
Detection
A compressor startup failure is detected by checking the compressor running condition through
the position detection circuit.
Malfunction
Decision
Conditions
„ The compressor fails to start in about 15 seconds after the compressor run command signal
is sent.
„ Clearing condition: Continuous run for about 10 minutes (normal)
„ The system will be shut down if the error occurs 16 times.
Supposed
Causes
„
„
„
„
„
Compressor relay cable disconnected
Compressor itself defective
Outdoor unit PCB defective
Stop valve closed
Input voltage out of specification
Troubleshooting
Caution
Check No.13
Refer to P.125
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check No. 13
Check for short-circuit.
Normal
NO
Replace the outdoor unit
PCB.
YES
Check the electrolytic capacitor
voltage.
DC290~380V?
NO
Replace the outdoor unit
PCB.
YES
Electricals
or compressor harnesses
connected as
specified?
NO
Reconnect as specified.
YES
Turn off the power. Disconnect the
harnesses U, V and W.
∗ Inverter checker
Part No.: 1225477
Check with the inverter checker (∗).
YES
Any LED off?
NO
Correct the power supply or
replace the outdoor unit
PCB.
Replace the compressor.
(R3041)
Service Diagnosis
107
Troubleshooting
SiEBE04-507
4.18 DC Voltage / Current Sensor Abnormality
Remote
Controller
Display
H8
Method of
Malfunction
Detection
Detecting abnormality of the DC sensor by the running frequency of compressor and by the
input current multiplied DC voltage and current.
Malfunction
Decision
Conditions
The compressor running frequency is below 52 Hz.
(The input current is also below 0.5 A.)
„ If this error repeats 4 times, the system will be shut down.
„ The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
Supposed
Causes
„ Outdoor unit PCB defective
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace the outdoor unit PCB.
108
Service Diagnosis
SiEBE04-507
Troubleshooting
4.19 Thermistor or Related Abnormality (Outdoor Unit)
Remote
Controller
Display
P4, J3, J6, H9
Method of
Malfunction
Detection
This type of error is detected by checking the thermistor input voltage to the microcomputer.
[A thermistor error is detected by checking the temperature.]
Malfunction
Decision
Conditions
The thermistor input is above 4.96 V or below 0.04 V with the power on.
Error J3 is judged if the discharge pipe thermistor temperature is smaller than the condenser
thermistor temperature.
Supposed
Causes
„
„
„
„
„
Service Diagnosis
Connector in poor contact
Thermistor defective
Outdoor unit PCB defective
Indoor unit PCB defective
Condenser thermistor defective in the case of J3 error (outdoor unit heat exchanger
thermistor in the cooling mode, or indoor unit heat exchanger thermistor in the heating
mode)
109
Troubleshooting
SiEBE04-507
Troubleshooting
Caution
Check No.6
Refer to P.122
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn on the power again.
Error displayed again
on remote controller?
NO
Reconnect.
YES
Connector or thermistor
disconnected?
YES
Reconnect.
NO
Check No. 6
Check the thermistor resistance
value.
Normal?
NO
YES
Replace defective one(s) of
the following thermistors.
Radiation fin thermistor
Discharge pipe thermistor
Outdoor heat exchanger
thermistor
Outdoor air thermistor
Check No. 6
Check the indoor heat exchanger
thermistor resistance value in the
heating mode.
Indoor
heat exchanger thermistor
functioning?
NO
YES
Replace the following
thermistor.
Indoor heat exchanger
thermistor
Replace the outdoor unit
PCB. (Replace the indoor
unit PCB.)
(R4097)
P4 : Radiation fin thermistor
J3 : Discharge pipe thermistor
J6 : Outdoor heat exchanger thermistor
H9 : Outdoor air temperature thermistor
110
Service Diagnosis
SiEBE04-507
Troubleshooting
4.20 Electrical Box Temperature Rise
Remote
Controller
Display
L3
Method of
Malfunction
Detection
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
compressor off.
Malfunction
Decision
Conditions
With the compressor off, the radiation fin temperature is above 80°C. Reset is made when the
temperature drops below 70°C.
Supposed
Causes
„
„
„
„
„
Service Diagnosis
Fin temperature rise due to defective outdoor unit fan
Fin temperature rise due to short-circuit
Fin thermistor defective
Connector in poor contact
Outdoor unit PCB defective
111
Troubleshooting
SiEBE04-507
Troubleshooting
Caution
Check No.6
Refer to P.122
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn off the power and turn it on
again.
Check No.7
Refer to P.123
Error again or outdoor unit
fan activated?
Check No.9
Refer to P.124
WARNING
To cool down the electricals, the
outdoor unit fan gets started when
the radiation fin temperature rises
above 80°C and stops itself when it
drops below 70°C.
YES
NO
Check No. 6
Check the thermistor resistance
value.
Fin thermistor
Check the radiation fin
temperature.
Thermistor as
specified in its characteristic
chart?
NO
Replace the fin thermistor.
YES
Above 80°C?
NO
Replace the outdoor unit
PCB.
YES
Check No. 9
Check the outdoor unit
fan or related.
Malfunctioning
Functioning
Radiation fin dirty?
Too dirty
Replace the fan motor.
Correct the connectors and
fan motor leads.
Replace the outdoor unit
PCB.
Clean up the radiation fin.
Slightly dirty
Check No. 7
Check the installation condition.
(R4279)
112
Service Diagnosis
SiEBE04-507
Troubleshooting
4.21 Radiation Fin Temperature Rise
Remote
Controller
Display
L4
Method of
Malfunction
Detection
A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
compressor on.
Malfunction
Decision
Conditions
If the radiation fin temperature with the compressor on is above 90°C .
„ If a radiation fin temperature rise takes place 4 times successively, the system will be shut
down.
„ The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
Supposed
Causes
„
„
„
„
„
Service Diagnosis
Fin temperature rise due to defective outdoor unit fan
Fin temperature rise due to short-circuit
Fin thermistor defective
Connector in poor contact
Outdoor unit PCB defective
113
Troubleshooting
SiEBE04-507
Troubleshooting
Caution
Check No.6
Refer to P.122
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn off the power and turn it on
again to get the system started.
Check No.7
Refer to P.123
Error displayed again?
Check No.9
Refer to P.124
YES
NO
Check No. 6
Check the thermistor resistance
value.
Fin thermistor
Check the radiation fin
temperature.
Thermistor as
specified in its characteristic
chart?
NO
Replace the fin thermistor.
YES
Above 90°C?
YES
Check No. 9
Check the outdoor unit
fan or related.
Malfunctioning
Functioning
Radiation fin dirty?
Too dirty
NO
Check the power transistor
and fin for looseness. If
they are found to be fit
tightly, replace the PCB or
the power transistor.
Replace the fan motor.
Correct the connectors and
fan motor leads.
Replace the outdoor unit
PCB.
Clean up the radiation fin.
Slightly dirty
Check No. 7
Check the installation condition.
(R4280)
114
Service Diagnosis
SiEBE04-507
Troubleshooting
4.22 Output Over Current Detection
Remote
Controller
Display
L5
Method of
Malfunction
Detection
An output over-current is detected by checking the current that flows in the inverter DC section.
Malfunction
Decision
Conditions
„ A position signal error occurs while the compressor is running.
„ A speed error occurs while the compressor is running.
„ An output over-current input is fed from the output over-current detection circuit to the
microcomputer.
„ The system will be shut down if the error occurs 255 times.
„ Clearing condition: Continuous run for about 10 minutes (normal)
Supposed
Causes
„
„
„
„
„
„
„
„
Service Diagnosis
Over-current due to defective power transistor
Over-current due to wrong internal wiring
Over-current due to abnormal supply voltage
Over-current due to defective PCB
Error detection due to defective PCB
Over-current due to closed stop valve
Over-current due to compressor failure
Over-current due to poor installation condition
115
Troubleshooting
SiEBE04-507
Troubleshooting
Caution
Check No.7
Refer to P.123
Check No.8
Refer to P.123
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
∗ An output over-current may result from wrong internal wiring. If the wires have been disconnected and
reconnected for part replacement, for example, and the system is interrupted by an output over-current,
take the following procedure.
NO
Stop valve fully open?
Fully open the stop valve.
YES
Check No.13
Refer to P.125
Turn off the power and turn it on
again to get the system started.
See if the same error occurs.
Error again?
NO Monitor the supply voltage,
discharge and suction pressures,
and other factors for a long term.
YES
Possible causes
Instantaneous supply voltage
drop
Compressor motor overloaded
Contact-induced electrical
short-circuit
Turn off the power and disconnect
the harnesses U, V and W.
∗ Inverter checker
Part No.: 1225477
Check with the inverter checker (∗).
Any LED off?
Keep on using as it is
(monitor).
Check the electricals'
connectors and other
fittings.
YES
NO
Correct the power supply or
replace the SPM.
(Replace the outdoor unit
PCB.)
Check No. 13
Check the power transistor.
Normal?
NO
Replace the SPM.
(Replace the outdoor unit
PCB.)
YES
Turn off the power, and reconnect
the harnesses. Turn on the power
again and get restarted.
Check the supply voltage.
Voltage as rated?
NO
Correct the power supply.
YES
Short-circuit
or breakage between
compressor's coil
phases?
YES
Replace the compressor.
NO
Check No. 8
Check the discharge pressure.
Check No. 7
Check the installation condition.
(R2852)
Note:
116
If the model doesn’t have SPM, replace the outdoor unit PCB.
Service Diagnosis
SiEBE04-507
Troubleshooting
4.23 Insufficient Gas
Remote
Controller
Display
U0
Method of
Malfunction
Detection
Gas shortage detection I : A gas shortage is detected by checking the compressor running
frequency.
Gas shortage detection II : A gas shortage is detected by checking the difference between
indoor unit heat exchanger temperature and room temperature as well as the difference
between outdoor unit heat exchanger temperature and room temperature.
Gas shortage detection III : A gas shortage is detected by checking the difference between
inhale and exhale temperature.
Malfunction
Decision
Conditions
Gas shortage detection I :
DC current × DC voltage < (A/Hz) × Compressor running frequency +
However, when the status of running frequency > (Hz) is kept on for a certain time.
Note : The values are different from model to model.
640 / 256
0
55
Gas shortage detection II :
If a gas shortage error takes place 4 times successively, the system will be shut down. The error
counter will reset itself if this or any other error does not occur during the following 60-minute
compressor running time (total time).
Gas shortage detection III :
When the difference of the temperature is smaller than
, it is regarded as insufficient gas.
Cooling
Heating
Supposed
Causes
Service Diagnosis
room temperature – indoor heat exchanger temperature
outdoor heat exchanger temperature – outdoor temperature
indoor heat exchanger temperature – room temperature
outdoor temperature – outdoor heat exchanger temperature
4.0°C
4.0°C
3.0°C
3.0°C
„ Refrigerant shortage (refrigerant leakage)
„ Poor compression performance of compressor
„ Discharge pipe thermistor disconnected, or indoor unit or outdoor unit heat exchanger
thermistor disconnected, room or outdoor air temperature thermistor disconnected
„ Stop valve closed
„ Electronic expansion valve defective
117
Troubleshooting
SiEBE04-507
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check No.4
Refer to P.120
Any thermistor
disconnected?
Check No.6
Refer to P.122
NO
YES
Reconnect in position.
* Discharge pipe thermistor
* Indoor / outdoor unit heat exchanger thermistor
* Room temperature thermistor
* Outdoor air thermistor
YES
Open the stop valve.
Stop valve closed?
NO
Check for gas leakage.
Oil oozing at relay pipe
connections?
YES
Repair the pipe flare or
replace the square union.
NO
Oil oozing at internal piping?
YES
NO
Check No. 4
Electronic expansion valve
functioning?
Compressor vibrating
too much?
NO
NO
Check the pipes for
improper contact. Correct
as required. Also replace
cracked pipe if any.
YES
Replace the electronic
expansion valve.
Change for a specified amount of
fresh refrigerant.
Gas shortage error again?
YES Check the power transistor
harness for looseness.
Correct it as required. Also
replace cracked pipe if any.
YES
Replace the room
NO
Malfunctioning temperature or outdoor air
Check No. 6
Check the thermistors.
Functioning
thermistor, or the indoor
unit or outdoor unit heat
exchanger thermistor.
(1) Replace the PCB.
(2) Replace the compressor.
Procedure complete
(R3318)
118
Service Diagnosis
SiEBE04-507
Troubleshooting
4.24 Over-voltage Detection
U2
Remote
Controller
Display
Method of
Malfunction
Detection
An abnormal voltage rise is detected by checking the specified over-voltage detection circuit.
Malfunction
Decision
Conditions
„ An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer
(The voltage is over 400V).
„ The system will be shut down if the error occurs 255 times.
„ Clearing condition: Continuous run for about 10 minutes (normal)
Supposed
Causes
„ Supply voltage not as specified
„ Over-voltage detection circuit defective
„ PAM control part(s) defective
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the supply voltage.
Supply voltage as
specified?
NO
Correct the power supply.
YES
Turn on the
power again.
Error displayed again?
NO
Disturbance factors
∗ Noise ∗ Power supply distortion
Check for such factors for a
long term.
YES
Repeat a
couple of times.
Replace the SPM.
(Replace the outdoor unit
PCB.)
(R2957)
Note:
Service Diagnosis
If the model doesn’t have SPM, replace the outdoor unit PCB.
119
Check
SiEBE04-507
5. Check
5.1
How to Check
5.1.1 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).
Check motor control voltage (pins 4-3).
Check rotation command voltage output (pins 4-2).
Check rotation pulse input (pins 4-1).
S1
Motor power supply voltage
Unused
Unused
P.0V (reference potential)
Motor control voltage (15 VDC)
Rotation command voltage (1~ 6 VDC)
Rotation pulse input
7
6
5
4
3
2
1
(R3199)
5.1.2 Electronic Expansion Valve Check
Check No.4
Conduct the followings to check the electronic expansion valve (EV).
1. Check to see if the EV connector is correctly inserted in the PCB. Compare the EV unit and
the connector number.
2. Turn the power off and back on again, and check to see if all the EVs generate latching
sound.
3. If any of the EVs does not generate latching noise in the above step 2, disconnect that
connector and check the conductivity using a tester.
Check the conductivity between pins 1, 3 and 6, and between pins 2, 4 and 5. If there is no
conductivity between the pins, the EV coil is faulty.
Harness 6P
Check
6P Connector
1
2
3
4
5
5-2
5-4
6-1
6-3
6
(R1082)
4. If no EV generates latching sound in the above step 2, the outdoor unit PCB is faulty.
5. If the conductivity is confirmed in the above step 2, mount a good coil (which generated
latching sound) in the EV unit that did not generate latching sound, and check to see if that
EV generates latching sound.
∗If latching sound is generated, the outdoor unit PCB is faulty.
∗If latching sound is not generated, the EV unit is faulty.
Note:
120
Please note that the latching sound varies depending on the valve type.
Service Diagnosis
SiEBE04-507
Check
5.1.3 Four Way Valve Performance Check
Check No.5
Turn off the power and turn it on
again.
Start the heating-mode run.
S80 voltage
at DC 180-220 V with
compressor on?
(Fig. 1)
∗ Four way valve coil
Cooling / dry : No continuity
Heating : Continuity
NO
Replace the outdoor unit
PCB.
YES
Disconnect the four way valve coil
from the connector and check the
continuity.
Four way valve
coil resistance at
3kΩ±0.5kΩ?
NO
Replace the four way valve
coil.
YES
Replace the four way valve.
(Fig. 1)
Voltage at S80
DC180-220V
Compressor
Time
ON
Service Diagnosis
(R3047)
121
Check
SiEBE04-507
5.1.4 Thermistor Resistance Check
Check No.6
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
211.0 (kΩ)
150
116.5
88
67.2
51.9
40
31.8
25
20
16
13
10.6
8.7
50
7.2
Tester
Resistance range
(R25 = 20k⍀, B = 3950)
(k⍀)
150
100
50
-15
122
0
15
30
45
(°C)
(R1437)
Service Diagnosis
SiEBE04-507
Check
5.1.5 Installation Condition Check
Check No.7
Installation condition check
Check
the allowable
dimensions of the air suction
and discharge
area.
Abnormal
Change the position of the air
discharge grille or the
installation location.
Normal
Does
the discharged
air from other outdoor
unit cause an increase of
the suction air
temperature?
YES
Change the position of the air
discharge grille or the
installation location.
NO
Is the heat exchanger
very dirty?
NO
Is
the air flow
blocked by obstacles or
winds blowing in the
opposite direction?
YES
Clean the heat exchanger.
YES
Change the installation
location or direction.
NO
Check the outside air
temperature (temperature of air
taken in by the outdoor unit).
(The outside air temperature
shall be 43°C or lower.)
(R1438)
5.1.6 Discharge Pressure Check
Check No.8
Discharge pressure check
High
NO
Replace compessor.
YES
Is the stop valve open?
NO
Open the stop valve.
YES
Is the
connection pipe deformed?
NO
Replace the pipe installed at
the site.
YES
At the heat exchanger and
air filter dirty?
YES
NO
Clean.
Replace the compressor.
(R1443)
Service Diagnosis
123
Check
SiEBE04-507
5.1.7 Outdoor Unit Fan System Check
Check No.9
DC motor
Check the outdoor unit fan system.
Outdoor unit fan running?
NO
Fan motor lead wire
connector disconnected?
YES
YES
Reconnect.
NO
Outdoor unit fan system
functioning.
Go to Check No. 15.
(R2857)
5.1.8 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]
5.1.9 Inverter Units Refrigerant System Check
Check No.11
Refrigerant system check
Is
the discharge
thermister disconnected from
the holder?
YES
Correct the problem.
NO
Is any moisture
found in sight glass.
NO
YES
Conduct vacuum drying.
Conduct the check after operating the
equipment for a sufficient length of time.
Check for gas leaks.
See the section on insufficient gas
detection.
YES
Replace the refrigerant.
(R1445)
124
Service Diagnosis
SiEBE04-507
Check
5.1.10 Power Transistor Check
Check No.13
Note:
Check to make sure that the voltage between the terminal of Power transistor (+) and (-) is
approx. 0 volt before checking power transistor.
< Measuring method >
Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the
connector, press the protrusion on the connector.
Then, follow the procedure below to measure resistance between power transistor (+) and (-)
and the U, V and W terminals of the compressor connector with a multi-tester. Evaluate the
measurement results for a pass/fail judgment.
<Power transistor check>
Negative (-) terminal of
Power transistor
tester (positive terminal
(+)
(+) for digital tester)
Positive (+) terminal of
UVW
tester (negative terminal
(-) for digital tester)
Normal resistance
Unacceptable resistance
UVW
Power transistor
(-)
UVW
Power transistor
(+)
UVW
Power transistor
(-)
Several kΩ to several MΩ (∗)
Short (0 Ω) or open
5.1.11 Turning Speed Pulse Input on the Outdoor Unit PCB Check
Check No.15
<Propeller fan motor>
Make sure the voltage of 270±30V is being applied.
(1) Stop the operation first and then the power off, and disconnect the connector S70.
(2) Make sure there is about DC 270 V between pins 4 and 7.
(3) With the system and the power still off, reconnect the connector S70.
(4) Make a turn of the fan motor with a hand, and make sure the pulse (0-15 V) appears twice at
pins 1 and 4.
If the fuse is blown out, the outdoor-unit fan may also be in trouble. Check the fan too.
If the voltage in Step (2) is not applied, it means the PCB is defective. Replace the PCB.
If the pulse in Step (4) is not available, it means the Hall IC is defective. Replace the DC fan
motor.If there are both the voltage (2) and the pulse (4), replace the PCB.
PCB
S70
7
6
5
4
3
2
1
Turning speed pulse input (0-15 V)
15V
DC270V
(R2859)
∗ Propeller fan motor : S70
Service Diagnosis
125
Check
126
SiEBE04-507
Service Diagnosis
SiEBE04-507
Part 7
Removal Procedure
1. Indoor Unit...........................................................................................128
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
Removal of Air Filter.............................................................................128
Removal of Front Panel........................................................................130
Removal of Front Grille ........................................................................132
Removal of Horizontal Blades and Vertical Blades ..............................135
Removal of Electrical Box ....................................................................138
Removal of PCB...................................................................................141
Removal of Drain Pan Unit...................................................................147
Removal of Fan Motor..........................................................................151
Removal of Heat Exchanger ................................................................153
Removal of Fan Rotor ..........................................................................156
2. Outdoor Unit........................................................................................159
2.1
2.2
2.3
2.4
2.5
2.6
2.7
Removal Procedure
Removal of Panels and Fan Motor.......................................................159
Removal of Electrical Box ....................................................................166
Removal of Reactor and Partition Plate ...............................................168
Removal of Sound Blanket...................................................................170
Removal of Four Way Valve.................................................................172
Removal of Compressor.......................................................................174
Removal of PCB...................................................................................176
127
Indoor Unit
SiEBE04-507
1. Indoor Unit
1.1
Removal of Air Filter
Procedure
Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
1. Appearance feature
Warning!
Dangerous: High voltage
A high voltage is applied to
all the electric circuits of this
product including
thermistors.
(R4305)
Signal receiver
ON/OFF switch
(Test run switch)
Operation lamp
TIMER lamp
INTELLIGENT EYE
lamp
Room temperature INTELLIGENT EYE
thermistor
(R4306)
„ When a signal from the
remote controller is
received, the receiving tone
sounds and the operation
lamp flickers immediately to
confirm the signal reception.
„ When the ON/OFF switch is
kept pressed for 5 seconds,
the forced cooling operation
is performed for about 15
minutes.
2. Removing the air filter
1 Put your fingers on the
right and left projections
of the front panel, and
open the panel to the
position where it will
stop.
2
3
Slightly push up the
knob at the center of
the air filter and release
the hook.
(R4307)
„ The air filter is not marked
for difference between the
right and left sides.
„ The air filter can be set
easily by inserting it along
the guides.
„ Insert the air filter with the
"FRONT"-marked face up.
„ Be sure to insert the hooks
(at 2 lower positions) when
mounting the air filter.
Pull out the air filter
downwards and remove
it.
(R4308)
128
Removal Procedure
SiEBE04-507
Step
Indoor Unit
Procedure
3. Removing the titanium
apatite photocatalytic airpurifying filter
1 The titanium apatite
photocatalytic airpurifying filter is
attached to the back of
the air filter.
Points
„ The titanium apatite
photocatalytic air-purifying
filter is not marked for
difference between the right
and left sides.
Air filter
Titanium apatite
photocatalytic
air-purifying filter
(R4309)
2
Remove the titanium
apatite photocatalytic
air-purifying filter frame
by bending the air filter
and unfastening the
projections from the air
filter frame.
Projections
(R4310)
3
Remove the titanium
apatite photocatalytic
air-purifying filter from
its frame (at 5 positions)
by bending it.
(R4311)
Removal Procedure
129
Indoor Unit
1.2
SiEBE04-507
Removal of Front Panel
Procedure
Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
1. Removing the front panel
1 Put your fingers on the
right and left projections
of the front panel, and
open the panel over the
position where it will
stop.
(R4312)
2
Slide the left rotary
shaft to the right and
release it.
3
When mounting the
front panel, make sure
that the projection is
fitted in the guide
before closing the
panel.
Rotary shaft
(R4313)
Projection
(R4314)
4
Slide the right rotary
shaft to the left and
release it.
Rotary shaft
(R4315)
130
Removal Procedure
SiEBE04-507
Step
5 Remove the front panel.
Indoor Unit
Procedure
Points
Caution on Mounting
„ When mounting the front
panel, fit the right and left
rotary shafts one by one into
the grooves and fully push
them in position.
(R4316)
Removal Procedure
131
Indoor Unit
1.3
SiEBE04-507
Removal of Front Grille
Procedure
Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
1. Removing the service
cover
1 Remove the screw of
the service cover.
Preparation
„ Remove the front panel
according to the “Removal
of Front Panel.”
(R4317)
2
Pull out the service
cover diagonally down
in the direction of the
arrow.
(R4318)
3
„ There are no switches to be
set in the field.
The figure shows the
appearance of the
inside.
(R4319)
2. Removing the front grille
1 Open the horizontal
blades.
(R4320)
132
Removal Procedure
SiEBE04-507
Step
2 Remove the screw
Indoor Unit
Procedure
Points
covers (one each at the
right and left).
(R4321)
3
„ When installing the indoor
unit, drive the screws with
the horizontal blades open
or removed.
Remove the screws
(one each at the right
and left).
(R4322)
4
Release the 3 hooks at
the top.
5
Put your fingers into the
front grille to the depth
and lift the grille up to
unhook.
Hooks
(R4323)
(R4324)
Removal Procedure
133
Indoor Unit
Step
6 Put your fingers into the
SiEBE04-507
Procedure
Points
front grille and lift the
grille up to unfasten the
center hook.
(R4325)
7
Unfasten the right hook
also by putting your
fingers into the grille
and lifting it.
(R4326)
a
8
Remove the front grille
by tilting the upper part
to the front (a) and
lifting and pulling the
lower part toward
yourself (b).
Caution on Mounting
„ When mounting the front
grille, make sure that the
hooks are fastened as they
were.
b
(R4327)
Spacer
„ When mounting the front
grille, be sure not to get it
stuck on the spacer of the
drain pan.
Front grille
Spacer
Section View
(R4590)
(R4565)
134
Removal Procedure
SiEBE04-507
1.4
Indoor Unit
Removal of Horizontal Blades and Vertical Blades
Procedure
Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
1. Removing the horizontal
blade (large)
1 Open the horizontal
blade (large).
Horizontal blade (large)
Cautions on Mounting
„ Mount the large horizontal
blade to the upper side and
the small horizontal blade to
the lower side.
Do not put them in the
wrong place.
Horizontal blade (small)
2
Unfasten the center
fixing shaft while
bending the horizontal
blade slightly.
„ There is a key alignment
mark at the right side. Insert
the key first while turning.
3
Unfasten the left fixing
shaft of the horizontal
blade (large).
„ After key alignment at the
right side, mount the flap
first to the center fixing shaft
and then to the left fixing
shaft.
4
Unfasten the right fixing
shaft of the horizontal
blade (large).
Removal Procedure
135
Indoor Unit
Step
SiEBE04-507
Procedure
2. Removing the horizontal
blade (small)
1 Remove the horizontal
blade (small) while
bending the fixed part
at the center slightly.
Points
Horizontal blade (small)
(R4332)
2
Unfasten the left side.
Key
3
Unfasten the key type
fixing shaft at the right
side.
(R4334)
136
Removal Procedure
SiEBE04-507
Step
Indoor Unit
Procedure
Points
3. Removing the vertical
blade
1 Unfasten the hooks at
the shaft mounting part
by pressing them with a
flat screwdriver.
Hooks
2
Unfasten the hooks at
the upper 2 positions.
3
Remove the vertical
blade toward yourself.
Removal Procedure
(R4335)
„ Six vertical blades are
united as a set.
(It is impossible to replace
only one blade.)
„ The set of blades is not
marked for difference
between right and left.
137
Indoor Unit
1.5
SiEBE04-507
Removal of Electrical Box
Procedure
Step
1 The figure shows the
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
Electrical
component box
connections of wire
harnesses.
Preparation
„ Remove the front grille
according to the “Removal
of Front Grille.”
Drip proof
plate
(R4338)
2
Remove the screw of
the electric wire
retaining plate.
3
Loosen the screws of
the terminal board and
disconnect the
connecting wires.
4
Remove the connector
of the swing motor [S6].
[S6]
(R4341)
138
Removal Procedure
SiEBE04-507
Step
5 Remove the drip proof
Indoor Unit
Procedure
Points
„ Put any excess wires behind
the power supply lead wire.
plate by removing the
screw.
Drip proof plate
(R4343)
6
Replace the heat
exchanger thermistor.
„ Use care not to lose the
retainer of thermistor.
Heat exchanger
thermistor
Retainer of
thermistor
Retainer of
thermistor
Heat exchanger
thermistor
(R4344)
7
Disconnect the earth
wire by removing the
screw.
Earth wire
(R4345)
8
Remove the screw of
the electrical box.
Removal Procedure
139
Indoor Unit
Step
9 Release the hook at the
upper far side by
pressing it from above
and pulling the box
toward yourself.
SiEBE04-507
Procedure
Points
Hook
(R4347)
10
Lift up the electrical box
and pull it toward
yourself.
11
When the connector of
the fan motor [S1] is
removed, the electrical
box can be dismounted.
140
„ There is a hook also at the
lower part of the back. When
mounting the box, make
sure that it is securely
fastened.
Removal Procedure
SiEBE04-507
1.6
Indoor Unit
Removal of PCB
Procedure
Warning
Step
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
1. Removing the shelter
1 The figure shows the
appearance of the
electrical box.
Preparation
„ Remove the electrical box
according to the “Removal
of Electrical Box.”
Signal receiver
PCB
2
Open the shelter (at the
back).
Signal receiver unit
(R4350)
Shelter (back)
3
Push the upper center
of the shelter and
unfasten the hooks at
the upper 2 positions of
the shelter.
Hooks
(R4351)
Hook
Hook
(R4352)
2. Removing the heat
exchanger thermistor
1 Remove the heat
exchanger thermistor
and disconnect the
earth wire.
Earth wire
Clamp
Heat exchanger
thermistor
(R4353)
Removal Procedure
141
Indoor Unit
Step
SiEBE04-507
Procedure
Points
3. Removing the terminal
board
1 Dismount the terminal
board by removing the
screw.
Terminal board
(R4354)
4. Removing the signal
receiver unit
1 Remove the signal
receiver unit by
unfastening the hooks
(one each at the right
and left).
Signal receiver unit
Hook
Hook
(R4355)
Hook
2
Remove the electrical
box (cover) by
unfastening the hooks
at 2 positions.
(R4356)
Hooks
(R4357)
142
Removal Procedure
SiEBE04-507
Step
Indoor Unit
Procedure
3
Remove the electrical
box by sliding it to the
left.
4
Disconnect the wire
harness.
Points
Hook
Hook
(R4358)
5. Removing the signal
receiver PCB
1 Remove the signal
receiver PCB by
opening the hooks at 3
positions.
Hook
Hook
Signal receiver PCB
2
Hook
(R4361)
Disconnect the
connector from the
signal receiver PCB.
(R4362)
Removal Procedure
143
Indoor Unit
Step
SiEBE04-507
Procedure
Points
6. Removing the
INTELLIGENT EYE PCB
1 Remove the
INTELLIGENT EYE
fixing plate by twisting it
clockwise.
2
INTELLIGENT EYE
fixing plate
(R4363)
Remove the
INTELLIGENT EYE
PCB by unfastening the
hook.
Hook
3
Disconnect the
connector from the
INTELLIGENT EYE
PCB.
(R4364)
(R4365)
144
Removal Procedure
SiEBE04-507
Indoor Unit
Step
Procedure
Points
7. Removing the display
PCB
1 The figure shows the
connection of wire
harness for the display
PCB.
Display PCB
(R4366)
2
Remove the display
PCB by unfastening the
2 hooks.
Hook
(R4367)
3
Disconnect the
connector from the
display PCB.
Green
LED 1
Red
LED 2
Green
LED 3
(R4368)
8. Removing the control PCB
1 Dismount the control
PCB by removing the 2
hooks.
Hook
Hook
(R4369)
Removal Procedure
145
Indoor Unit
SiEBE04-507
Step
2
Procedure
Points
Lift up the bottom of the
control PCB and pull it
out.
„ When mounting the control
PCB, make sure that it is
fixed by upper hooks.
Fixing hook
Fixing
hook
(R4370)
3
The figures show the
names of the PCB
component parts.
„ Lead-free solder (PbF) is
used for the PCB. When
replacing the PCB, use the
specific solder and soldering
iron.
Fuse cap
Glass tube fuse
(R4371)
Varistor (w/cap)
[S1]
Fuse
(holder type
w/cap)
[S1] To DC fan motor
[S6] To swing motor
[S21] HA connector
[S26] To display PCB
[S28] To signal receiver PCB
[S32] To heat exchanger
thermistor
[S35] To INTELLIGENT EYE
PCB
[S6]
[S21]
[S35]
[S32]
[S28] [S26]
(R4288)
[S29]
[S27]
[S36]
SW1
RTH1
LED 1
(Green)
146
LED 2 LED 3
(Yellow) (Green)
(R4373)
Removal Procedure
SiEBE04-507
1.7
Indoor Unit
Removal of Drain Pan Unit
Procedure
Step
Warning
Be sure to turn off all power supplies at least 10 min. before
disassembling work.
Procedure
Points
1. Removing the drain pan
unit
1 Lift up the indoor unit
body slightly and pull
out the drain hose. (In
the case of left piping)
Preparation
„ Remove the electrical box
according to the “Removal
of Electrical Box.”
„ Inserting of the wooden
base facilitates the removing
work.
„ Place a plastic bag under
the drain pan to prevent
from wetting the floor with
remaining drain.
Wooden base
(R4374)
2
Remove the screw at
the left side of the drain
pan.
3
Remove the drain pan
from the heat
exchanger by pressing
its right side and
twisting its left side.
Keep
pressing
here
Twist here
(R4376)
Removal Procedure
147
Indoor Unit
Step
4
SiEBE04-507
Procedure
Points
Remove the drain pan
toward yourself from
the indoor unit body.
Caution on Mounting
„ Make sure that the hook at
the left side is fitted in the
groove.
Hook
(R4379)
2. Removing the swing motor
1 Remove the screw of
the swing motor.
Swing motor
(R4380)
2
148
Pull out the swing
motor.
Removal Procedure
SiEBE04-507
Step
Indoor Unit
Procedure
Points
3. Removing the crank
assembly
1 Remove the screw of
the crank assembly.
Crank assembly
(R4382)
2
Remove the crank
assembly by
unfastening the hook.
Hook
(R4383)
3
The figure shows the
position of the hook
when the crank
assembly has been
removed.
Hook inserting part
(R4384)
4. How to connect the drain
hose in right piping
1 Pull out the drain hose
from its right side
connection.
Drain hose
(R4385)
Removal Procedure
149
Indoor Unit
Step
2
SiEBE04-507
Procedure
Points
Remove the drain cap
located at the left side
of the drain pan unit.
(Left side)
Drain cap
3
Insert the drain hose to
the left side.
(Left side)
(R4387)
4
Press the removed
drain plug into the right
side with an Allen
wrench (4mm).
„ Use a 4mm Allen wrench.
(Right side)
Caution!
Do not thrust in the drain
plug with a sharp-pointed
tool like a screwdriver. (The
drain plug may be broken,
resulting in water leakage.)
(R4388)
150
Removal Procedure
SiEBE04-507
1.8
Indoor Unit
Removal of Fan Motor
Procedure
Step
1 Undo the fan motor
lead wires from the
hooks.
Warning
Be sure to turn off all power supplies at least 10 min. before
disassembling work.
Procedure
Points
Preparation
„ Remove the drain pan unit
according to the “Removal
of Drain Pan Unit.”
„ You can remove the fan
motor with the heat
exchanger left.
It is easy to clean up the
heat exchanger.
2
Loosen and remove the
fan rotor lock screw.
3
Remove the 2 screws
of the fan motor fixing
plate.
Removal Procedure
151
Indoor Unit
Step
4
SiEBE04-507
Procedure
Points
Unfasten the hook (a)
of the fan motor fixing
plate with your thumb.
Hook(c)
Hook(a)
(R4392)
5
Unfasten the hook (c).
Hook(c)
Hook(a)
(R4393)
6
152
Remove the fan motor.
Removal Procedure
SiEBE04-507
1.9
Removal of Heat Exchanger
Procedure
Step
Warning
Be sure to turn off all power supplies at least 10 min. before
disassembling work.
Procedure
1. Disconnecting the
refrigerant pipe
1 Remove the screws
which fix the heat
exchanger to the
installation plate.
2
Indoor Unit
Lift the indoor unit by a
wooden base.
3
Lift up the indoor unit
body slightly and pull
out the drain hose. (In
the case of left piping)
4
Disconnect the pipe
connection with 2 pair
of spanners.
Caution!
From the point of view
of environmental
protection, be sure to
use a vacuum pump
for air purging.
Removal Procedure
Points
Preparation
„ Remove the drain pan unit
according to the “Removal
of Drain Pan Unit.”
Caution!
In pump-down work, be sure
to stop the compressor
before disconnecting the
refrigerant pipe. If the
refrigerant pipe is
disconnected with the
compressor being operated
and the stop valve being
open, air may be sucked in to
generate an over-pressure in
refrigeration cycle, thus
resulting in pipe rupture or
accidental injury.
„ Place a plastic bag under
the drain pan to prevent
from wetting the floor with
remaining drain.
„ If the drain hose is
embedded in the wall,
disconnect the drain hose
beforehand.
„ Carry out the removal works
with 2 pair of spanners.
„ When the pipes are
disconnected, protect the
both openings of pipe side
and unit side from entering
of moisture.
153
Indoor Unit
Step
SiEBE04-507
Procedure
Points
2. Removing the indoor unit
1 Remove the indoor unit
from the installation
plate.
3. Removing the heat
exchanger
1 Unfasten the hook of
the pipe fixing plate at
the back of the unit and
pull out the pipe.
2
Widen the auxiliary pipe
by about 10-20
degrees.
Unbending angle:
10-20 deg.
(R4402)
3
Unfasten the lower
hook with a flat
screwdriver.
Caution!
When dismounting or
mounting the heat
exchanger, be sure to wear
gloves or wrap it with cloth
before proceeding to the
work. (You may be injured by
the fins.)
Hook
Lower hook
154
(R4403)
Removal Procedure
SiEBE04-507
Indoor Unit
Step
4
Procedure
Points
„ When mounting the heat
exchanger, make sure that
the hook (left) is fastened.
After unfastening the
lower hooks, hold up
the heat exchanger by
its left side and lift it up
toward yourself.
Hook (left)
Hook
(left)
(R4404)
5
When the left side is
lifted, the hook at the
right side comes off
position.
Hook (right)
(R4405)
6
Remove the heat
exchanger.
Removal Procedure
155
Indoor Unit
SiEBE04-507
1.10 Removal of Fan Rotor
Procedure
Step
Warning
Be sure to turn off all power supplies at least 10 min. before
disassembling work.
Procedure
1. Removing the drip proof
plate
Points
Drip proof plate (right)
Preparation
„ Remove the heat exchanger
according to the “Removal
of Heat Exchanger.”
(R4406)
1
Dismount the drip proof
plate (right) by
removing the 2 screws.
2
Unhook the fan motor
wire harness.
3
Remove the 2 screws
of the fan motor fixing
plate.
Fan motor
fixing plate
(R4409)
156
Removal Procedure
SiEBE04-507
Step
4
Indoor Unit
Procedure
Points
Unfasten the hook (a)
of the fan motor fixing
plate with your thumb
and unfasten the hook
(b).
Hook (c)
Hook (a)
(R4410)
5
The fan motor fixing
plate can be removed
from the unit when the
hook (c) is unfastened.
Fan
motor
fixing
plate
Hook (c)
Hook (a)
Hook (b)
(R4411)
2. Removing the fan rotor
1 Dislocate the fan rotor
by sliding it to the right.
Fan rotor
(R4412)
2
Remove the fan rotor
by loosening the lock
screw.
Lock screw
Fan motor
(R4413)
Removal Procedure
157
Indoor Unit
Step
SiEBE04-507
Procedure
Points
3. Removing the bearing
1 Remove the screw of
the drip proof plate
(left).
2
The drip proof plate can
be removed when the
hooks at 2 positions are
unfastened.
Hook
Hook
(R4415)
3
Press the rubber-made
bearing with force from
outside.
4
Remove the bearing.
158
Removal Procedure
SiEBE04-507
Outdoor Unit
2. Outdoor Unit
2.1
Removal of Panels and 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. Features
Handle
(R3235)
„ Take care not to cut your
finger by the fins of the heat
exchanger.
Outdoor air
thermistor
(R3236)
1
Loosen the screw of the
stop valve cover.
Pull down the stop
valve cover and remove
it.
Stop
valve
cover
(R3237)
Shelter
„ The stop valve cover is
united with the shelter.
„ When reassembling, make
sure to fit the 5 hooks.
Hooks
(R3238)
Removal Procedure
159
Outdoor Unit
SiEBE04-507
Procedure
Step
2. Remove the panels.
1 Loosen the 3 screws
(front, right, left) and lift
the top panel.
Points
Top panel
(R3239)
2
Remove the drip proof
plate.
Drip proof plate
(R3240)
3
„ The fan motor is united with
the front panel.
Disconnect the
connector for fan motor
(S70).
S70
4
Loosen the 5 screws of
the front panel.
Front panel
160
(R3241)
(R3242)
Removal Procedure
SiEBE04-507
Outdoor Unit
Procedure
Step
5
Points
„ The front panel has 4 hooks.
„ The fan motor is united with
the front panel.
Undo the hooks.
Pull and remove the
front panel.
Hooks
(R3243)
„ The screw has reverse
winding.
3. Remove the fan motor.
1 Unscrew the washerfitted nut (M10) of the
propeller fan with a
spanner.
Propeller fan
2
(R3244)
„ Align
mark of the
propeller fan with D-cut
section of the motor shaft
when reassembling.
Remove the propeller
fan.
D-cut
(R3245)
Removal Procedure
161
Outdoor Unit
Procedure
Step
3
SiEBE04-507
Loosen the 2 screws
and lift the bell mouth to
undo the hooks.
Remove the bell mouth.
Points
Bell mouth
Hooks
(R3246)
4
Loosen the fixing hooks
and release the lead
wire.
„ Put the lead wire through the
back of the motor when
reassembling. (so as not to
be entangled with the
propeller fan)
Lead wire
Propeller fan
(R3249)
162
Removal Procedure
SiEBE04-507
Procedure
Step
5
Outdoor Unit
Points
„ M4×16
„ DC fan motor
Loosen the 4 screws to
remove the fan motor.
Fan motor
6
(R3250)
Loosen the 2 screws to
remove the fan motor
fixing frame.
Fan motor fixing frame
Removal Procedure
(R3251)
163
Outdoor Unit
SiEBE04-507
Procedure
Step
Points
4. Remove the right side
panel.
1 Loosen the 2 screws on
the rear side.
2
Loosen the 3 screws on
the right side.
Right side panel
(R3254)
3
164
Loosen the screw and
lift the connection port
to remove.
Removal Procedure
SiEBE04-507
Step
Outdoor Unit
Procedure
Points
„ When reassembling, make
sure to fit the hook.
Hook
(R3257)
Removal Procedure
165
Outdoor Unit
2.2
SiEBE04-507
Removal of Electrical Box
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
Points
„ Remove the top panel.
„ Disconnect the connector
for fan motor.
1. Remove the electrical
box.
1 Disconnect the 2
reactor harnesses.
2
Disconnect the relay
connector for
compressor lead wire.
3
Disconnect the
connector for four way
valve (S80).
„ When reassembling, coil the
excessive lead wire and
hang the loop on the hook.
S80
(R3260)
166
Removal Procedure
SiEBE04-507
Procedure
Step
4
Outdoor Unit
Points
„ Pay attention so as not to
lose the clip for thermistor.
Release the discharge
pipe thermistor.
Thermistor
Piping
Clip
(R3262)
Discharge pipe thermistor
5
(R3261)
„ Pay attention so as not to
lose the clip.
Release the heat
exchanger thermistor.
Clip
(R3263)
Heat exchanger thermistor
6
Lift and remove the
electrical box.
(R3264)
Electrical box
(R3265)
Removal Procedure
167
Outdoor Unit
2.3
SiEBE04-507
Removal of Reactor and Partition Plate
Procedure
Step
„ Remove the outer panels.
„ Remove the electrical
box.
1. Remove the reactor.
1 Loosen the screw.
Lift and remove the
reactor.
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Points
Reactor
(R3266)
2. Remove the partition
plate.
1 Loosen the 2 screws.
Partition plate
(R3268)
168
Removal Procedure
SiEBE04-507
Outdoor Unit
Procedure
Step
2
Points
The partition plate has
a hook on the lower
side. Lift and pull the
partition plate to
remove.
„ When reassembling, fit the
lower hook into the bottom
frame.
Hook
(R3270)
Removal Procedure
169
Outdoor Unit
2.4
SiEBE04-507
Removal of Sound Blanket
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
Points
„ Remove the outer panels.
„ Remove the electrical
box.
1. Remove the sound
blanket.
1 Untie the strings and
open the sound blanket.
Sound blanket
2
Lift and remove the
sound blanket (body) as
it is opened.
3
Lift and remove the
sound blanket (top).
170
(R3271)
„ Since the piping ports on the
sound blanket are torn
easily, remove the blanket
carefully.
Removal Procedure
SiEBE04-507
Outdoor Unit
Procedure
Step
4
Pull the sound blanket
(inner) out.
5
Pull the sound blanket
(bottom) out.
Removal Procedure
Points
„ Since the piping ports on the
sound blanket are torn
easily, remove the blanket
carefully.
171
Outdoor Unit
2.5
SiEBE04-507
Removal of Four Way Valve
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
1. Remove the peripheries.
„ Remove the four
way valve and the
sheets of putty so as
not to burn them.
1 Remove the terminal
cover.
Points
Terminal
cover
(R3276)
Red (U)
„ Be careful so as not to burn
the compressor terminals or
the name plate.
Make a note.
Yellow(V)
Blue (W)
(R3277)
2
172
Loosen the screw of the
four way valve coil.
Removal Procedure
SiEBE04-507
Procedure
Step
3
Outdoor Unit
Points
Remove the sheets of
putty.
Cut the pipe with a tube
cutter.
Tube cutter
(R3280)
4
Heat up the brazed part
and withdraw the piping
with pliers.
Removal Procedure
„ Provide a protective sheet or
a steel plate so that the
brazing flame cannot
influence peripheries.
„ Be careful so as not to break
the pipes by pressing it
excessively by pliers when
withdrawing it.
173
Outdoor Unit
2.6
Removal of Compressor
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Procedure
Step
1. Remove the compressor.
1 Unscrew the nut of the
compressor.
„ Before working,
make sure that the
refrigerant is empty
in the circuit.
„ Be sure to apply
nitrogen
replacement when
heating up the
brazed part.
2
SiEBE04-507
Heat up the brazed part
of the discharge side
and disconnect.
Points
Warning
Ventilate when refrigerant
leaks during the work.
(If refrigerant contacts fire, it
will cause to arise toxic gas.)
„ Provide a protective sheet or
a steel plate so that the
brazing flame cannot
influence peripheries.
„ Be careful so as not to burn
the compressor terminals or
the name plate.
„ Be careful so as not to burn
the heat exchanger fin.
Warning
Since it may happen that
refrigeration oil in the
compressor will catch fire,
prepare wet cloth so as to
extinguish fire immediately.
In case of the difficulty with
gas brazing machine
1. Disconnect the brazed part
where is easy to disconnect
and restore.
2. Cut pipes on the main unit by
a miniature copper tube
cutter in order to make it
easy to disconnect.
Cautions for restoration
1. Restore the piping by nonoxidation brazing.
2. It is required to prevent the
carbonization of the oil inside
the four way valve and the
deterioration of the gaskets
affected by heat. For the
sake of this, wrap the four
way valve with wet cloth and
provide water so that the
cloth will not be dried and
avoid excessive heating.
(Keep below 120°C)
Note: Do not use a metal
saw for cutting pipes by all
means because the sawdust
come into the circuit.
174
Removal Procedure
SiEBE04-507
Outdoor Unit
Procedure
Step
3
Heat up the brazed part
of the suction side and
disconnect.
4
Lift the compressor up
and remove it.
Removal Procedure
Points
175
Outdoor Unit
2.7
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. Remove the PCB.
1 Feature of the PCB
2
Loosen the screw on
the terminal board.
3
Release the earth
terminal.
176
SiEBE04-507
Points
„ You can remove the PCB
when you disconnect the
read wires on the terminal
board without removing the
electrical box.
„ PbF (Pb free brazing) is
adopted.
Removal Procedure
SiEBE04-507
Outdoor Unit
Procedure
Step
4
Loosen the 4 screws.
5
Undo the 3 hooks on
the upper side.
Points
Hooks
(R3290)
6
Lift and pull out the
PCB.
Removal Procedure
177
Outdoor Unit
Procedure
Step
7
SiEBE04-507
Feature of the PCB
S70: fan motor
S80: four way valve
S90: thermistor
(outdoor air, heat
exchanger,
discharge pipe)
PbF (Pb free soldering)
Points
S90
Glass fuse
3.15A
S70
Glass fuse
S80
LED A
V3
Varistor
(R4591)
178
Removal Procedure
SiEBE04-507
Part 8
Others
1. Others .................................................................................................180
1.1 Test Run from the Remote Controller ..................................................180
1.2 Jumper Settings ...................................................................................181
Others
179
Others
SiEBE04-507
1. Others
1.1
Test Run 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)
180
MODE
(1) (4)
(R4294)
Others
SiEBE04-507
1.2
Others
Jumper Settings
1.2.1 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 front grille. (3 screws)
(2) Remove the electrical box (1-screw).
(3) Remove the drip proof plate. (4 tabs)
(4) 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)
1.2.2 Jumper Setting
Jumper
Function
(On indoor control PCB)
JC
Power failure
recovery function
JB
Others
When connected
(factory set)
Auto-restart
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
181
Others
182
SiEBE04-507
Others
SiEBE04-507
Part 9
Appendix
1. Piping Diagrams..................................................................................184
1.1 Indoor Units ..........................................................................................184
1.2 Outdoor Units .......................................................................................185
2. Wiring Diagrams..................................................................................187
2.1 Indoor Units ..........................................................................................187
2.2 Outdoor Units .......................................................................................187
Appendix
183
Piping Diagrams
SiEBE04-507
1. Piping Diagrams
1.1
Indoor Units
FTK(X)S20/25/35DVMW(L), FTK(X)S20/25/35DVMW9, FTK(X)S20/25/35D2VMW(L)
INDOOR UNIT
MAFFLER ASSY
HEAT EXCHANGER
7.0CuT
6.4CuT
THERMISTOR
ON HEAT EXCH.
7.9CuT
6.4CuT
6.4CuT
CROSS FLOW FAN
FIELD PIPING
(6.4CuT)
M
FAN MOTOR
FIELD PIPING
(9.5CuT)
9.5CuT
REFRIGERANT FLOW
COOLING
HEATING
4D047912A
184
Appendix
SiEBE04-507
1.2
Piping Diagrams
Outdoor Units
1.2.1 Cooling Only
RKS20/25DVMB, RKS20/25D2VMB
OUTDOOR UNIT
OUTDOOR TEMPERATURE
THERMISTOR
9.5CuT
7.0CuT HEAT EXCHANGER
7.0CuT
7.0CuT
6.4CuT 6.4CuT
MUFFLER
WITH
FILTER
M
MOTOR OPERATED
VALVE
MUFFLER
WITH
FILTER
9.5CuT
PROPELLER FAN
φ. 4.0×ID. 2.0CuT
HEAT EXCHANGER
THERMISTOR
9.5CuT
FOUR WAY
VALVE
NORMALLY : OFF
9.5CuT
7.9CuT
6.4CuT
MUFFLER
WITH
FILTER
LIQUID STOP
VALVE
DISCHARGE PIPE
THERMISTOR
7.9CuT
MUFFLER
9.5CuT
9.5CuT
COMPRESSOR
GAS STOP
VALVE
MUFFLER
ACCUMULATOR
FIELD PIPING
(6.4CuT)
FIELD PIPING
(9.5CuT)
REFRIGERANT FLOW
COOLING
3D047317
RKS35DVMB, RKS35D2VMB
OUTDOOR UNIT
OUTDOOR TEMPERATURE
THERMISTOR
9.5CuT
7.0CuT HEAT EXCHANGER
7.0CuT
4.8CuT MUFFLER
M
MUFFLER
WITH
FILTER
WITH
FILTER
PROPELLER FAN
9.5CuT
MOTOR OPERATED
VALVE
φ. 4.0×ID. 2.0CuT
HEAT EXCHANGER
THERMISTOR
4.8CuT
6.4CuT 6.4CuT
9.5CuT
FOUR WAY
VALVE
NORMALLY : OFF
9.5CuT
7.9CuT
6.4CuT
MUFFLER
WITH
FILTER
LIQUID STOP
VALVE
7.9CuT
MUFFLER
DISCHARGE PIPE
THERMISTOR
9.5CuT
COMPRESSOR
ACCUMULATOR
9.5CuT
MUFFLER
GAS STOP
VALVE
FIELD PIPING
(6.4CuT)
FIELD PIPING
(9.5CuT)
REFRIGERANT FLOW
COOLING
3D047318
Appendix
185
Piping Diagrams
SiEBE04-507
1.2.2 Heat Pump
RXS20/25DVMB, RXS20/25D2VMB
OUTDOOR UNIT
OUTDOOR TEMPERATURE
THERMISTOR
9.5CuT
7.0CuT HEAT EXCHANGER
7.0CuT
7.0CuT
6.4CuT 6.4CuT
MUFFLER
WITH
FILTER
M
MOTOR OPERATED
VALVE
MUFFLER
WITH
FILTER
9.5CuT
PROPELLER FAN
φ. 4.0×ID. 2.0CuT
HEAT EXCHANGER
THERMISTOR
9.5CuT
7.9CuT
FOUR WAY
VALVE
ON : HEATING
9.5CuT
6.4CuT
MUFFLER
WITH
FILTER
LIQUID STOP
VALVE
MUFFLER
FIELD PIPING
(6.4CuT)
7.9CuT
DISCHARGE PIPE
THERMISTOR
9.5CuT
9.5CuT
COMPRESSOR
GAS STOP
VALVE
MUFFLER
ACCUMULATOR
FIELD PIPING
(9.5CuT)
REFRIGERANT FLOW
COOLING
HEATING
3D047315
RXS35DVMB, RXS35D2VMB
OUTDOOR UNIT
OUTDOOR TEMPERATURE
THERMISTOR
9.5CuT
7.0CuT HEAT EXCHANGER
7.0CuT
4.8CuT MUFFLER
WITH
FILTER
M
MUFFLER
WITH
FILTER
PROPELLER FAN
9.5CuT
MOTOR OPERATED
VALVE
φ. 4.0×ID. 2.0CuT
HEAT EXCHANGER
THERMISTOR
4.8CuT
6.4CuT 6.4CuT
9.5CuT
FOUR WAY
VALVE
ON : HEATING
9.5CuT
7.9CuT
6.4CuT
MUFFLER
WITH
FILTER
LIQUID STOP
VALVE
MUFFLER
FIELD PIPING
(6.4CuT)
7.9CuT
DISCHARGE PIPE
THERMISTOR
9.5CuT
COMPRESSOR
ACCUMULATOR
9.5CuT
MUFFLER
GAS STOP
VALVE
FIELD PIPING
(9.5CuT)
REFRIGERANT FLOW
COOLING
HEATING
3D047316
186
Appendix
SiEBE04-507
Wiring Diagrams
2. Wiring Diagrams
2.1
Indoor Units
FTK(X)S20/25/35DVMBW(L), FTK(X)S20/25/35DVMW9, FTK(X)S20/25/35D2VMW(L)
FIELD WIRING.
S27 S26
PCB3
LED1
H1P
LED2
H2P
LED3
H3P
PCB1
V1
HA
R1T
PCB4
H2
S1
7
S21
t°
S29
SIGNAL
RECEIVER
FG
:
F1U
:
H1P~H3P
:
M1F
:
M1S
:
PCB1~PCB4 :
R1T, R2T
:
S1~S38
:
S1W
:
X1M
:
L1
:
:
M
M1F
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.
RED
S32 1 S6 5
PCB2
1
2
3
X1M
BLK 1
WHT 2
RED 3
GRN
/YLW
FG
RED
ORG
YLW
PNK
BLU
S28
INFRARED
REMOTE
CONTROL
H3
BLU
BRN
ORG
WHT
1
S36 S35
INTELLIGENT EYE
SENSOR
L1
3.15A
TRANSMISSION
CIRCUIT
S1W
t°
H1
F1U
~
~
RECTIFIER
FRAME GROUND
FUSE
PILOT LAMP
FAN MOTOR
SWING MOTOR
PRINTED CIRCUIT BOARD
THERMISTOR
CONNECTOR
OPERATION SWITCH
TERMINAL STRIP
COIL
PROTECTIVE EARTH
3D047523
2.2
Outdoor Units
RK(X)S20/25/35DVMB, RK(X)S20/25/35D2VMB
R12T
t°
BRN
BRN
C100
1
V3
V3
7
7
~+
~ -
HL3
WHT
WHT
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
1
~ -
FU1
1
S10
S10
7
IC11
FU1
3.15A
3.15A V1
V1
S20 6
1 S20 6
PCB2
PCB2
MRCW
1
S80
~ -
IC11
MRCW
7
1
33
1
S90
11 S90 66
+
C74 +
C74 - -
+
C75 +
C75 - -
outdoor
outdoor
11
S80
S80
33
IN
OF
IN CASE
CASE OF
COOLING
ONLY
COOLING ONLY
TYPE
TYPE
N
N
: NEUTRAL
: NEUTRAL
M
M
Y1E
Y1E
Y1R
Y1R
t˚t° t˚t° t˚t°
+
+
+ C95
- C95
S70
S70
1 1 22 3 344 77
-WWV V UU
S40 S30
S40
S30
22
11
5 3 1
5 3 1
Z1C
V V Z1C
N=2
N=2
M
M
1~
1~
ININCASE
CASE OF
OF
R1TR2T
R2TR3T
R3T
R1T
HEAT
HEAT PUMP
PUMP (OUTDOOR)
(DISCHARGE)
(
)
(
)
OUTDOOR
DISCHARGE
TYPE
TYPE
( (CONDENSER))
SA1
PCB1, PCB2
CIRCUIT
BOARDBOARD
PCB1, PCB2: PRINTED
: PRINTED
CIRCUIT
Q1L Q1L
: OVERLOAD
PROTECTOR
V1, V2, V3
: OVERLOAD
PROTECTOR
, R3T
X1M
, R2T, R3T: ,THERMISTOR
R1T, R2T
R1T
R12T : THERMISTOR
, S11, S20
, S20
Y1E
S10, S11S10
,
,
S30
S40
S70
,
,
S30 S40 S70
Y1R
, S90, S91
, S91
S80, S90S80
Z1C, Z2C
, HC4
, HL3
, HN3 : CONNECTOR
HC3
, HL3
, HN3
HC3, HC4
: CONNECTOR
+
C94
+
C94
+
FU2
- FU2
3.15A
3.15A
S80
NOTE
NOTE
1. REFER
THE POWER
POWERREQUIREMENTS.
REQUIREMENTS.
1.REFERTOTOTHE
THENAMEPLATE
NAMEPLATE FOR
FOR THE
C74
C75
C74,, C75
C94
C95,,C100
C100
: :CAPACITOR
C94,, C95
CAPACITOR
DB1
DB2
: :DIODE
DB1,, DB2
DIODEBRIDGE
BRIDGE
,
,
FU1
FU2
FU3
:
FUSE
FU1, FU2, FU3
: FUSE
IC11
: :TRIAC
TRIAC
IPM1
: :INTELLIGENT
INTELLIGENTPOWER
POWER MODULE
MODULE
IPM1
L
: :LIVE
LIVE
L1
: :COIL
COIL
M1C
: :REACTOR
L1R
REACTOR
L1R
: :COMPRESSOR
M1C
COMPRESSOR MOTOR
MOTOR
M1F
: :FAN
M1F
FANMOTOR
MOTOR
MRCW
MRCW,, MRM10
MRM10,,MRM20
MRM20: :MAGNETIC
MAGNETIC RELAY
RELAY
~ -
HN3
HL3
S11
S11
1
DB2
DB2
~ +
IPM1
WHT
WHT
ORG
ORG
BRN
BRN
BLU
BLU
RED
RED
E
~+
HN3
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
E
HR1 ORG
HL2 ORG
HL2 GRY
HN2 GRY
HN2 BLU
BLU
IPM1
HC4
HC4
RED
MRM10
HC3
HC3
HR2 DB1
~ +
HR2 DB1
GRY
MRM10
HN1 V2
S
V2
S
ORG
ORG
BLU
BLU
YLW
YLW
RED
L1
HN1
L1R
HR1
SA1
GRN/YLW
N
HL1 20A
SA1
GRN/YLW
GRN/YLW
L
L
N
X1M
L 1 BLK
L 1 BLK
N 2 WHT
N 2 WHT
3 RED
3 RED
L1R
MRM20
GRN/YLW
1
1
2
2
33
MRM20
FU3
Z2C HL1 20A
FU3 PCB1
L1
Z2C
X1M
YLW
HC1
HC2 HC1
PCB1
BLK
BLK
GRY
HC2
YLW
WHT
ORG
YLW
RED
ORG
YLW
BLU
BLK
BRN
GRY
RED
WHT
indoor FIELD WIRING.
indoor FIELD WIRING.
BLK
BLK
C100
M1F
M1F
Q1L
Q1L
WW
UU
M1C
M1C
CONDENSER
SA1
: SURGE ARRESTER
SURGE
V1, :V2,
V3 ARRESTER
: VARISTOR
:
VARISTOR
X1M
: TERMINAL STRIP
Y1E: TERMINAL STRIP
: ELECTRONIC EXPANSION VALVE COIL
VALVE
COIL
Y1R: ELECTRONIC EXPANSION
: REVERSING
SOLENOIDE
VALVE COIL
Z1C,: Z2C
: FERRITEVALVE
CORECOIL
REVERSING SOLENOIDE
: FERRITE CORE: PROTECTIVE EARTH
: PROTECTIVE EARTH
3D042576C
3D046707B
Appendix
187
Wiring Diagrams
188
SiEBE04-507
Appendix
SiEBE04-507
Index
Numerics
00 ...........................................................................87
3-minutes standby ............................................34, 41
A
A1 ...........................................................................88
A5 ...........................................................................89
A6 ...........................................................................91
address setting jumper ...........................................16
adjusting the air flow direction ................................65
air filter .................................................................128
air flow control ........................................................25
air flow direction control .........................................24
ARC433A ...............................................................84
AUTO · DRY · COOL · HEAT · FAN operation .......63
automatic operation ................................................27
auto-restart .....................................................16, 181
auto-restart function ...............................................34
auto-swing ..............................................................24
B
bell mouth .............................................................162
C
C4 ...........................................................................93
C9 ...........................................................................93
care and cleaning ...................................................74
centralized control ..................................................16
check
discharge pressure check ..............................123
electronic expansion valve check ..................120
fan motor connector output check .................120
four way valve performance check ................121
installation condition check ............................123
inverter units refrigerant system check ..........124
outdoor unit fan system check .......................124
power supply waveforms check .....................124
power transistor check ...................................125
thermistor resistance check ...........................122
turning speed pulse input on the outdoor unit PCB
check ...............................................125
check No.01 .........................................................120
check No.04 .........................................................120
check No.10 .........................................................124
check No.11 .........................................................124
check No.13 .........................................................125
check No.15 .........................................................125
check No.5 ...........................................................121
check No.6 ...........................................................122
check No.7 ...........................................................123
check No.8 ...........................................................123
check No.9 ...........................................................124
comfort airflow mode ..............................................24
compressor ..........................................................174
compressor lock .....................................................98
Index
compressor overload ............................................. 97
compressor protection function ............................. 41
compressor system sensor abnormality .............. 106
connectors ....................................................... 16, 18
control PCB (indoor unit) ....................................... 17
control PCB (outdoor unit) ..................................... 19
D
DC fan lock ............................................................ 99
DC voltage / current sensor abnormality ............. 108
defrost control ....................................................... 45
diagnosis mode ..................................................... 85
discharge pipe ....................................................... 47
discharge pipe control ........................................... 41
discharge pipe temperature control ............... 48, 103
discharge pipe thermistor .......... 35, 36, 47, 110, 167
discharge pressure check ................................... 123
display PCB ........................................................... 17
drain pan unit ...................................................... 147
drip proof plate .................................................... 160
E
E1 .......................................................................... 96
E5 .......................................................................... 97
E6 .......................................................................... 98
E7 .......................................................................... 99
E8 ........................................................................ 100
EA ....................................................................... 101
econo mode .......................................................... 30
econo operation .................................................... 69
electrical box ............................................... 138, 166
electrical box temperature rise ............................ 111
electronic expansion valve check ........................ 120
electronic expansion valve control ........................ 46
error codes
00 .................................................................... 87
A1 ................................................................... 88
A5 ................................................................... 89
A6 ................................................................... 91
C4 ................................................................... 93
C9 ................................................................... 93
E5 ................................................................... 97
E6 ................................................................... 98
E7 ................................................................... 99
E8 ................................................................. 100
EA ................................................................. 101
F3 .................................................................. 103
F6 .................................................................. 104
H0 ................................................................. 106
H6 ................................................................. 107
H8 ................................................................. 108
H9 ................................................................. 109
J3 .................................................................. 109
J6 .................................................................. 109
L3 .................................................................. 111
i
SiEBE04-507
L4 ...................................................................113
L5 ...................................................................115
P4 ..................................................................109
U0 ..................................................................117
U2 ..................................................................119
U4 ....................................................................94
UA ....................................................................95
error codes and description ....................................87
F
F3 .........................................................................103
F6 .........................................................................104
facility setting jumper ........................................18, 51
fan control ..............................................................44
fan motor ......................................................151, 163
fan motor connector output check ........................120
fan motor fixing frame ..........................................163
fan motor or related abnormality ............................91
fan motor, connector ............................................160
fan rotor ................................................................156
fan speed control ....................................................25
fan speed setting ............................................16, 181
filter PCB ................................................................19
forced operation mode ...........................................50
forced operation ON/OFF switch ............................16
four way valve ......................................................172
four way valve abnormality ...................................101
four way valve operation compensation .................40
four way valve performance check .......................121
four way valve switching ........................................40
four way valve, connector ....................................166
freeze-up protection control .............................43, 89
frequency control ..............................................22, 38
frequency principle .................................................22
front grille .............................................................132
front panel ....................................................130, 160
FU1 ..................................................................16, 18
FU2 ........................................................................18
FU3 ........................................................................18
function of thermistor ..............................................35
functions ...................................................................2
fuse ..................................................................16, 18
H
H0 .........................................................................106
H6 .........................................................................107
H8 .........................................................................108
H9 .........................................................................109
HA ..........................................................................16
Hall IC ..............................................................25, 91
HC3 ........................................................................18
HC4 ........................................................................18
heat exchanger ....................................................153
heat exchanger thermistor .............................93, 167
heating peak-cut control .........................................43
high pressure control ..............................................89
high pressure control in cooling ...........................104
HL3 .........................................................................18
HN3 ........................................................................18
horizontal blades ..................................................135
hot start function .....................................................34
ii
I
indoor heat exchanger thermistor ................... 35, 36
indoor unit PCB abnormality ................................. 88
input current control .............................................. 42
input over current detection ................................. 100
installation condition check ................................. 123
instruction .............................................................. 55
insufficient gas .................................................... 117
insufficient gas control ........................................... 49
INTELLIGENT EYE ............................................... 31
INTELLIGENT EYE operation ............................... 70
INTELLIGENT EYE sensor PCB ........................... 17
inverter POWERFUL operation ............................. 33
inverter principle .................................................... 22
inverter units refrigerant system check ................ 124
J
J3 ........................................................................ 109
J4 ........................................................................ 181
J6 ........................................................................ 109
J8 .......................................................................... 18
JA .................................................................. 16, 181
JB .................................................................. 16, 181
JC .................................................................. 16, 181
jumper settings .................................................... 181
L
L3 ........................................................................ 111
L4 ........................................................................ 113
L5 ........................................................................ 115
LED A .............................................................. 16, 18
LED1 ..................................................................... 16
LED2 ..................................................................... 16
LED3 ..................................................................... 16
liquid compression protection function 2 ............... 44
M
mode hierarchy ..................................................... 37
mold proof air filter ................................................ 34
N
names of parts ...................................................... 57
night set mode ....................................................... 29
O
OL activation ......................................................... 97
ON/OFF button on indoor unit ............................... 34
opening limit .......................................................... 47
operation lamp ...................................................... 82
outdoor air temperature thermistor ...................... 110
outdoor heat exchanger thermistor ......... 35, 36, 110
outdoor unit fan system check ............................ 124
outdoor unit PCB abnormality ............................... 96
OUTDOOR UNIT SILENT operation ..................... 68
output over current detection .............................. 115
over current ........................................... 49, 100, 115
overload .......................................................... 49, 97
overload protector ................................................. 18
over-voltage detection ......................................... 119
Index
SiEBE04-507
P
P4 .........................................................................109
partition plate ........................................................168
PCB ..............................................................141, 176
PI control ................................................................39
piping diagrams ....................................................184
position sensor abnormality .................................107
power failure recovery function ......................16, 181
power supply waveforms check ...........................124
power transistor check .........................................125
power-airflow dual flaps .........................................24
POWERFUL operation .....................................33, 67
POWERFUL operation mode .................................50
preheating operation ..............................................40
preparation before operation ..................................60
pressure equalization control .................................47
printed circuit board (PCB)
control PCB (indoor unit) .................................17
control PCB (outdoor unit) ...............................19
display PCB .....................................................17
filter PCB .........................................................19
INTELLIGENT EYE sensor PCB .....................17
signal receiver PCB .........................................17
problem symptoms and measures .........................83
programme dry function .........................................26
propeller fan .........................................................161
R
radiation fin temperature rise ...............................113
radiation fin thermistor ..........................................110
reactor ..................................................................168
reactor harnesses ................................................166
remote controller ....................................................84
room temperature thermistor ..................................93
RTH1 ......................................................................16
S
S1 ...................................................................16, 146
S10 .........................................................................18
S11 .........................................................................18
S20 .........................................................................18
S21 .................................................................16, 146
S26 .................................................................16, 146
S27 .........................................................................16
S28 .................................................................16, 146
S29 .........................................................................16
S30 .........................................................................18
S32 .................................................................16, 146
S35 .................................................................16, 146
S36 .........................................................................16
S40 .........................................................................18
S6 ...................................................................16, 146
S70 .........................................................18, 160, 178
S80 .........................................................18, 166, 178
S90 .................................................................18, 178
safety precautions ..................................................55
self-diagnosis digital display ...................................34
sensor malfunction detection .................................49
service check function ............................................84
shelter ..................................................................159
signal receiver PCB ................................................17
Index
signal receiving sign .............................................. 34
signal transmission error ....................................... 94
sound blanket ...................................................... 170
specifications ........................................................... 6
starting operation control ....................................... 47
stop valve cover .................................................. 159
SW1 ...................................................................... 16
T
terminal board ..................................................... 176
terminal cover ...................................................... 172
test run ................................................................ 180
thermistor
discharge pipe thermistor ... 35, 36, 47, 110, 167
function ........................................................... 35
indoor heat exchanger thermistor ....... 35, 36, 93
outdoor air temperature thermistor ............... 110
outdoor heat exchanger thermistor
...................................... 35, 36, 110, 167
radiation fin thermistor .................................. 110
room temperature thermistor .......................... 93
thermistor or related abnormality (indoor unit) ...... 93
thermistor or related abnormality (outdoor unit) .. 109
thermistor resistance check ................................ 122
thermostat control ................................................. 28
TIMER operation ................................................... 72
titanium apatite photocatalytic air-purifying filter ... 34
top panel ............................................................. 160
troubleshooting ................................................ 77, 87
troubleshooting with LED indication ...................... 82
turning speed pulse input on the outdoor unit PCB
check ........................................................... 125
U
U0 ........................................................................ 117
U2 ........................................................................ 119
U4 .......................................................................... 94
UA ......................................................................... 95
unspecified voltage ............................................... 95
V
V1 .................................................................... 16, 18
V2 .......................................................................... 18
V3 .......................................................................... 18
varistor ............................................................ 16, 18
vertical blades ..................................................... 135
voltage detection function ..................................... 50
W
wide-angle louvres ................................................ 24
wiring diagrams ................................................... 187
iii
SiEBE04-507
iv
Index
SiEBE04-507
Drawings & Flow Charts
A
ARC433A ...............................................................84
automatic air flow control .......................................25
automatic operation ...............................................27
auto-swing ..............................................................24
C
insufficient gas .................................................... 117
insufficient gas control ........................................... 49
INTELLIGENT EYE ............................................... 31
INTELLIGENT EYE sensor PCB ........................... 17
inverter features .................................................... 23
inverter POWERFUL operation ............................. 33
inverter units refrigerant system check ............... 124
comfort airflow mode ..............................................24
compressor lock .....................................................98
compressor protection function ..............................41
compressor system sensor abnormality ...............106
control PCB ............................................................17
control PCB (outdoor unit) .....................................19
J
D
N
DC fan lock ............................................................99
DC voltage / current sensor abnormality ..............108
defrost control ........................................................45
diagnosis mode ......................................................85
discharge pipe control ............................................41
discharge pipe temperature control .....................103
discharge pressure check ....................................123
display PCB ...........................................................17
E
econo mode ...........................................................30
electrical box temperature rise .............................111
electronic expansion valve check ........................120
electronic expansion valve control .........................46
F
facility setting jumper .............................................51
fan motor connector output check ........................120
fan motor or related abnormality ............................91
filter PCB ................................................................19
four way valve abnormality ..................................101
four way valve performance check .......................121
freeze-up protection control ...................................43
freeze-up protection control or
high pressure control ......................................89
frequency control ...................................................38
frequency principle .................................................22
function of thermistor
cooling only model ...........................................36
heat pump model .............................................35
jumper settings .................................................... 181
M
mode hierarchy ..................................................... 37
night set mode ....................................................... 29
O
OL activation (compressor overload) .................... 97
ON/OFF button on indoor unit ............................... 34
operation lamp ...................................................... 82
outdoor unit fan system check ............................ 124
outdoor unit PCB abnormality ............................... 96
output over current detection .............................. 115
over-voltage detection ......................................... 119
P
piping diagrams
FTK(X)S20/25/35D2VMW(L) ........................ 184
FTK(X)S20/25/35DVMW(L) .......................... 184
FTK(X)S20/25/35DVMW9 ............................ 184
RKS20/25D2VMB ......................................... 185
RKS20/25DVMB ........................................... 185
RKS35D2VMB .............................................. 185
RKS35DVMB ................................................ 185
RXS20/25D2VMB ......................................... 186
RXS20/25DVMB ........................................... 186
RXS35D2VMB .............................................. 186
RXS35DVMB ................................................ 186
position sensor abnormality ................................ 107
power supply waveforms check .......................... 124
POWERFUL operation .......................................... 33
programme dry function ........................................ 26
R
H
radiation fin temperature rise .............................. 113
remote controller ................................................... 84
heating peak-cut control .........................................43
high pressure control in cooling ...........................104
S
I
indoor unit PCB abnormality ..................................88
input current control ...............................................42
input over current detection .................................100
installation condition check ..................................123
Drawings & Flow Charts
service check function ........................................... 84
signal receiver PCB ............................................... 17
signal transmission error
(between indoor and outdoor units) ............... 94
v
SiEBE04-507
T
target discharge pipe temperature control .............48
thermistor or related abnormality (indoor unit) .......93
thermistor or related abnormality (outdoor unit) ...109
thermistor resistance check .................................122
thermostat control ..................................................28
trial operation from remote controller ...................180
turning speed pulse input on the outdoor unit PCB
check ............................................................125
W
wiring diagrams
FTK(X)S20/25/35D2VMW(L) .........................187
FTK(X)S20/25/35DVMBW(L) ........................187
FTK(X)S20/25/35DVMW9 .............................187
RK(X)S20/25/35D2VMB ................................187
RK(X)S20/25/35DVMB ..................................187
vi
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.
Zandvoordestraat 300
B-8400 Ostend - Belgium
www.daikineurope.com
SiEBE04-507 • 06/2005
Prepared in Belgium by Lannoo
Specifications are subject to change without prior notice