SiBE06-708_C
Service
Manual
Inverter Pair
Floor Standing Type F-Series
[Applied Models]
O Inverter Pair : Cooling Only
O Inverter Pair : Heat Pump
SiBE06-708_C
Inverter Pair
Floor Standing Type
F-Series
zCooling Only
Indoor Unit
FVXS25FV1B
FVXS35FV1B
FVXS50FV1B
Outdoor Unit
RKS25F2V1B
RKS35F2V1B
RKS50F2V1B
RKS25G2V1B
RKS35G2V1B
RKS50G2V1B
RKS25G2V1B9
RKS35G2V1B9
zHeat Pump
Indoor Unit
FVXS25FV1B
FVXS35FV1B
FVXS50FV1B
Outdoor Unit
RXS25F2V1B
RXS35F2V1B
RXS50F2V1B
i
RXS25G2V1B
RXS35G2V1B
RXS50G2V1B
RXS25G2V1B9
RXS35G2V1B9
RXS25J2V1B
RXS35J2V1B
RXS50J2V1B
RXS25K2V1B
RXS35K2V1B
RXS50K2V1B
RXS25K3V1B
Table of Contents
SiBE06-708_C
1. Introduction .............................................................................................v
1.1 Safety Cautions ........................................................................................v
1.2 Used Icons .............................................................................................. ix
Part 1 List of Functions ................................................................ 1
1. Functions.................................................................................................2
1.1 Cooling Only.............................................................................................2
1.2 Heat Pump ...............................................................................................5
Part 2 Specifications .................................................................. 10
1. Specifications ........................................................................................11
1.1 Cooling Only...........................................................................................11
1.2 Heat Pump .............................................................................................16
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 25
1. Indoor Unit.............................................................................................26
2. Outdoor Unit..........................................................................................28
2.1 RK(X)S25/35F2V1B ...............................................................................28
2.2 RK(X)S25/35G2V1B...............................................................................30
2.3 RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B,
RXS25K3V1B.........................................................................................32
2.4 RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B ..............................34
2.5 RXS50K2V1B.........................................................................................36
Part 4 Function and Control........................................................ 38
1. Main Functions......................................................................................39
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
1.12
1.13
Temperature Control ..............................................................................39
Frequency Principle................................................................................39
Airflow Direction Control.........................................................................41
Fan Speed Control for Indoor Unit .........................................................43
Program Dry Operation ..........................................................................44
Automatic Operation...............................................................................45
Thermostat Control.................................................................................46
NIGHT SET Mode ..................................................................................47
ECONO Operation .................................................................................48
Inverter POWERFUL Operation .............................................................49
Clock Setting ..........................................................................................50
WEEKLY TIMER Operation ...................................................................51
Other Functions......................................................................................56
2. Function of Thermistor ..........................................................................57
3. Control Specification .............................................................................58
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
Table of Contents
Mode Hierarchy ......................................................................................58
Frequency Control..................................................................................59
Controls at Mode Changing / Start-up....................................................61
Discharge Pipe Temperature Control.....................................................63
Input Current Control..............................................................................64
Freeze-up Protection Control .................................................................65
Heating Peak-cut Control .......................................................................65
Outdoor Fan Control...............................................................................66
ii
SiBE06-708_C
3.9
3.10
3.11
3.12
Liquid Compression Protection Function................................................66
Defrost Control .......................................................................................67
Electronic Expansion Valve Control .......................................................68
Malfunctions ...........................................................................................71
Part 5 Remote Controller ............................................................ 72
1. FVXS25/35/50FV1B..............................................................................73
Part 6 Service Diagnosis............................................................. 75
1. Troubleshooting with LED .....................................................................77
1.1 Indoor Unit..............................................................................................77
1.2 Outdoor Unit ...........................................................................................77
2. Problem Symptoms and Measures .......................................................78
3. Service Check Function ........................................................................79
4. Troubleshooting ....................................................................................82
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
4.25
4.26
Error Codes and Description ..................................................................82
Indoor Unit PCB Abnormality .................................................................83
Freeze-up Protection Control or Heating Peak-cut Control....................84
Fan Motor (DC Motor) or Related Abnormality.......................................85
Thermistor or Related Abnormality (Indoor Unit)....................................87
Refrigerant Shortage ..............................................................................88
Low-voltage Detection or Over-voltage Detection..................................91
Signal Transmission Error (between Indoor Unit and Outdoor Unit) ......93
Signal Transmission Error on Outdoor Unit PCB
(RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Only)....................95
Unspecified Voltage (between Indoor Unit and Outdoor Unit) ...............96
Outdoor Unit PCB Abnormality...............................................................97
OL Activation (Compressor Overload) ...................................................99
Compressor Lock .................................................................................101
DC Fan Lock ........................................................................................102
Input Overcurrent Detection .................................................................103
Four Way Valve Abnormality................................................................104
Discharge Pipe Temperature Control...................................................106
High Pressure Control in Cooling .........................................................107
Compressor System Sensor Abnormality ............................................108
Position Sensor Abnormality ................................................................110
DC Voltage / Current Sensor Abnormality (25/35 Class Only).............113
CT or Related Abnormality (RK(X)S50F2V1B, RK(X)S50G2V1B,
RXS50J2V1B Only)..............................................................................114
Thermistor or Related Abnormality (Outdoor Unit)...............................116
Electrical Box Temperature Rise..........................................................118
Radiation Fin Temperature Rise ..........................................................121
Output Overcurrent Detection ..............................................................124
5. Check ..................................................................................................126
5.1
5.2
5.3
5.4
5.5
5.6
iii
Thermistor Resistance Check ..............................................................126
Fan Motor Connector Output Check ....................................................127
Power Supply Waveforms Check.........................................................127
Electronic Expansion Valve Check.......................................................128
Four Way Valve Performance Check ...................................................129
Inverter Units Refrigerant System Check .............................................129
Table of Contents
SiBE06-708_C
5.7
5.8
5.9
5.10
5.11
5.12
5.13
5.14
Inverter Analyzer Check .......................................................................130
Rotation Pulse Check on the Outdoor Unit PCB ..................................131
Installation Condition Check.................................................................133
Discharge Pressure Check...................................................................133
Outdoor Fan System Check .................................................................134
Main Circuit Short Check......................................................................134
Capacitor Voltage Check......................................................................136
Power Module Check ...........................................................................137
Part 7 Trial Operation and Field Settings................................. 140
1.
2.
3.
4.
Pump Down Operation........................................................................141
Forced Cooling Operation ...................................................................142
Trial Operation ....................................................................................144
Field Settings ......................................................................................145
4.1
4.2
4.3
4.4
When 2 Units are Installed in 1 Room..................................................145
Model Type Setting ..............................................................................146
Facility Setting Jumper (cooling at low outdoor temperature) ..............146
Jumper and Switch Settings.................................................................149
5. Silicon Grease on Power Transistor / Diode Bridge............................150
Part 8 Appendix......................................................................... 151
1. Piping Diagrams..................................................................................152
1.1 Indoor Unit............................................................................................152
1.2 Outdoor Unit .........................................................................................152
2. Wiring Diagrams..................................................................................156
2.1 Indoor Unit............................................................................................156
2.2 Outdoor Unit .........................................................................................157
3. Removal Procedure (Booklet No.) ......................................................160
Table of Contents
iv
Introduction
SiBE06-708_C
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 the item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates the prohibited action.
The prohibited item or action is shown in the illustration or near the symbol.
This symbol indicates the action that must be taken, or the instruction.
The instruction is shown in the illustration 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 Cautions Regarding Safety of Workers
Warning
Be sure to disconnect the power cable plug from the plug socket before
disassembling the equipment for repair.
Working on the equipment that is connected to the power supply may cause an
electrical shock.
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 is discharged during the repair work, do not touch the
discharged refrigerant gas.
The refrigerant gas may cause frostbite.
When disconnecting the suction or discharge pipe of the compressor at the
welded section, evacuate the refrigerant gas completely at a well-ventilated
place first.
If there is gas remaining inside the compressor, the refrigerant gas or
refrigerating machine oil discharges when the pipe is disconnected, and it may
cause injury.
If the refrigerant gas leaks during the repair work, ventilate the area. The
refrigerant gas may 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 may 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 may
cause an electrical shock or fire.
v
SiBE06-708_C
Introduction
Warning
Be sure to wear a safety helmet, gloves, and a safety belt when working at a
high place (more than 2 m). Insufficient safety measures may cause a fall
accident.
In case of R-410A refrigerant models, be sure to use pipes, flare nuts and tools
for the exclusive use of the R-410A refrigerant.
The use of materials for R-22 refrigerant models may cause a serious accident
such as a damage of refrigerant cycle as well as an equipment failure.
Caution
Do not repair the electrical components with wet hands.
Working on the equipment with wet hands may cause an electrical shock.
Do not clean the air conditioner by splashing water.
Washing the unit with water may 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 may cause injury.
Be sure to conduct repair work with appropriate tools.
The use of inappropriate tools may cause injury.
Be sure to check that the refrigerating cycle section has cooled down enough
before conducting repair work.
Working on the unit when the refrigerating cycle section is hot may cause
burns.
Use the welder in a well-ventilated place.
Using the welder in an enclosed room may cause oxygen deficiency.
vi
Introduction
SiBE06-708_C
1.1.2 Cautions Regarding Safety of Users
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 may cause an electrical shock,
excessive heat generation or fire.
If the power cable and lead wires have scratches or deteriorated, be sure to
replace them.
Damaged cable and wires may cause an electrical shock, excessive heat
generation or fire.
Do not use a joined power cable or extension cable, or share the same power
outlet with other electrical appliances, since it may cause an electrical shock,
excessive heat generation or fire.
Be sure to use an exclusive power circuit for the equipment, and follow the local
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 may cause an
electrical shock or fire.
Be sure to use the specified cable for wiring 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 may cause excessive heat generation or fire.
When wiring 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 may cause
an electrical shock, excessive heat generation or fire.
Do not damage or modify the power cable.
Damaged or modified power cable may cause an electrical shock or fire.
Placing heavy items on the power cable, and heating or pulling the power cable
may damage the cable.
Do not mix air or gas other than the specified refrigerant (R-410A / R-22) 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 leaking point and repair it
before charging the refrigerant. After charging refrigerant, make sure that there
is no refrigerant leak.
If the leaking point 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 may generate toxic gases when it contacts flames, such as fan
and other heaters, stoves and ranges.
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 may fall and cause injury.
vii
SiBE06-708_C
Introduction
Warning
Check to make sure that the power cable plug is not dirty or loose, then insert
the plug into a power outlet securely.
If the plug has dust or loose connection, it may cause an electrical shock or fire.
Be sure to install the product correctly by using the provided standard
For unitary type
installation frame.
only
Incorrect use of the installation frame and improper installation may cause the
equipment to fall, resulting in injury.
Be sure to install the product securely in the installation frame mounted on the For unitary type
window frame.
only
If the unit is not securely mounted, it may fall and cause injury.
When replacing the coin battery in the remote controller, be sure to dispose 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 the combustible gas leaks and remains around the unit, it may cause a fire.
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 may cause excessive heat generation,
fire or an electrical shock.
If the installation platform or frame has corroded, replace it.
Corroded installation platform or frame may cause the unit to fall, resulting in
injury.
Check the grounding, and repair it if the equipment is not properly grounded.
Improper grounding may cause an electrical shock.
viii
Introduction
SiBE06-708_C
Caution
Be sure to measure the insulation resistance after the repair, and make sure
that the resistance is 1 MΩ or higher.
Faulty insulation may cause an electrical shock.
Be sure to check the drainage of the indoor unit after the repair.
Faulty drainage may cause the water to enter the room and wet the furniture
and floor.
Do not tilt the unit when removing it.
The water inside the unit may spill and wet the furniture and floor.
Be sure to install the packing and seal on the installation frame properly.
For unitary type
If the packing and seal are not installed properly, water may enter the room and only
wet the furniture and floor.
1.2
Used 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:
Icon
Type of
Information
Description
Note
A “note” provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
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.
Note:
Caution
Warning
ix
SiBE06-708_C
Part 1
List of Functions
1. Functions.................................................................................................2
1.1 Cooling Only.............................................................................................2
1.2 Heat Pump ...............................................................................................5
List of Functions
1
Functions
SiBE06-708_C
1. Functions
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
Air-purifying filter
—
—
—
Photocatalytic deodorizing filter
—
—
z
Air-purifying filter with photocatalytic
deodorizing function
—
—
z
Titanium apatite photocatalytic
air-purifying filter
z
z
—
—
Air filter (prefilter)
z
z
z
z
Wipe-clean flat panel
z
z
—
—
Washable grille
—
—
z
z
Operation limit for cooling (°CDB)
–10
~46
–10
~46
Operation limit for heating (°CWB)
—
PAM control
z
Standby electricity saving
—
—
Oval scroll compressor
—
—
Swing compressor
z
Rotary compressor
Reluctance DC motor
Power-airflow flap
Inverter (with inverter power control)
Category
Health &
Clean
Functions
Power-airflow dual flaps
—
—
MOLD PROOF operation
—
—
Power-airflow diffuser
—
—
Good-sleep cooling operation
—
—
Wide-angle louvers
z
z
WEEKLY TIMER operation
z
z
Vertical auto-swing (up and down)
z
z
24-hour ON/OFF TIMER
z
z
Horizontal auto-swing (right and left)
—
—
3-D airflow
—
—
Auto fan speed
z
z
Indoor unit quiet operation
z
z
Timer
Worry Free
“Reliability &
Durability”
NIGHT SET mode
z
z
Auto-restart (after power failure)
z
z
Self-diagnosis (digital, LED) display
z
z
Wiring error check function
—
—
Anti-corrosion treatment of outdoor
heat exchanger
z
z
Multi-split / split type compatible indoor
unit
z
z
NIGHT QUIET mode (automatic)
—
—
OUTDOOR UNIT QUIET operation
(manual)
z
z
INTELLIGENT EYE operation
—
—
Quick warming function
(preheating operation)
—
—
H/P, C/O compatible indoor unit
z
z
Hot-start function
—
—
Flexible power supply correspondence
—
—
Flexibility
Automatic defrosting
—
—
Chargeless
Automatic operation
—
—
Either side drain (right or left)
—
—
Program dry operation
z
z
Power selection
—
—
5-room centralized controller (option)
z
z
Remote control adaptor
(normal open pulse contact) (option)
z
z
Remote control adaptor
(normal open contact) (option)
z
z
DIII-NET compatible (adaptor) (option)
z
z
Fan only
z
z
New POWERFUL operation
(non-inverter)
—
—
Inverter POWERFUL operation
z
z
Priority-room setting
—
—
COOL / HEAT mode lock
—
—
HOME LEAVE operation
—
—
ECONO operation
z
z
Indoor unit [ON/OFF] button
z
z
Signal receiving sign
z
z
R/C with back light
z
z
Temperature display
—
—
Note: z : Holding Functions
— : No Functions
2
FVXS50FV1B
RKS50F2V1B
Basic
Function
Functions
FVXS50FV1B
RKS50F2V1B
Category
FVXS25/35FV1B
RKS25/35F2V1B
Cooling Only
FVXS25/35FV1B
RKS25/35F2V1B
1.1
Remote
Control
Remote
Controller
10 m 10 m
Wireless
z
z
Wired (option)
—
—
: Lower limit can be extended by cutting jumper
(25/35 class) or turning switch (50 class).
(facility use only)
Refer to page 146 for detail.
List of Functions
FVXS25/35FV1B
RKS25/35G2V1B
FVXS50FV1B
RKS50G2V1B
—
—
—
Photocatalytic deodorizing filter
—
—
z
Air-purifying filter with photocatalytic
deodorizing function
—
—
Compressor
z
Titanium apatite photocatalytic
air-purifying filter
z
z
—
—
Air filter (prefilter)
z
z
z
z
Wipe-clean flat panel
z
z
Comfortable
Airflow
Power-airflow flap
—
—
Washable grille
—
—
Power-airflow dual flaps
—
—
MOLD PROOF operation
—
—
Power-airflow diffuser
—
—
Wide-angle louvers
z
z
Vertical auto-swing (up and down)
z
Horizontal auto-swing (right and left)
Comfort
Control
Operation
Lifestyle
Convenience
Functions
FVXS50FV1B
RKS50G2V1B
Air-purifying filter
Category
Basic
Function
Functions
FVXS25/35FV1B
RKS25/35G2V1B
SiBE06-708_C
z
z
Operation limit for cooling (°CDB)
–10
~46
–10
~46
Operation limit for heating (°CWB)
—
PAM control
z
Standby electricity saving
—
—
Oval scroll compressor
—
—
Swing compressor
z
Rotary compressor
Reluctance DC motor
Inverter (with inverter power control)
Category
Health &
Clean
Functions
Good-sleep cooling operation
—
—
WEEKLY TIMER operation
z
z
z
24-hour ON/OFF TIMER
z
z
—
—
NIGHT SET mode
z
z
3-D airflow
—
—
Auto-restart (after power failure)
z
z
Auto fan speed
z
z
Indoor unit quiet operation
z
z
Timer
Worry Free
“Reliability &
Durability”
Self-diagnosis (digital, LED) display
z
z
Wiring error check function
—
—
Anti-corrosion treatment of outdoor
heat exchanger
z
z
Multi-split / split type compatible indoor
unit
z
z
z
z
—
—
NIGHT QUIET mode (automatic)
—
—
OUTDOOR UNIT QUIET operation
(manual)
z
z
INTELLIGENT EYE operation
—
—
Quick warming function
(preheating operation)
—
—
H/P, C/O compatible indoor unit
Hot-start function
—
—
Flexible power supply correspondence
Automatic defrosting
—
—
Chargeless
Automatic operation
—
—
Either side drain (right or left)
—
—
Program dry operation
z
z
Power selection
—
—
5-room centralized controller (option)
z
z
Remote control adaptor
(normal open pulse contact) (option)
z
z
Remote control adaptor
(normal open contact) (option)
z
z
DIII-NET compatible (adaptor) (option)
z
z
Fan only
z
z
New POWERFUL operation
(non-inverter)
—
—
Inverter POWERFUL operation
z
z
Priority-room setting
—
—
COOL / HEAT mode lock
—
—
HOME LEAVE operation
—
—
ECONO operation
z
z
Indoor unit [ON/OFF] button
z
z
Signal receiving sign
z
z
R/C with back light
z
z
Temperature display
—
—
Note: z : Holding Functions
— : No Functions
List of Functions
Flexibility
Remote
Control
Remote
Controller
10 m 10 m
Wireless
z
z
Wired (option)
—
—
: Lower limit can be extended by cutting jumper
(25/35 class) or turning switch (50 class).
(facility use only)
Refer to page 146 for detail.
3
Category
Basic
Function
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
Functions
Inverter (with inverter power control)
Operation limit for cooling (°CDB)
Operation limit for heating (°CWB)
PAM control
Standby electricity saving
—
Health &
Clean
Functions
Air-purifying filter
—
—
Photocatalytic deodorizing filter
—
z
Air-purifying filter with photocatalytic
deodorizing function
—
Oval scroll compressor
—
Swing compressor
z
Titanium apatite photocatalytic
air-purifying filter
z
Rotary compressor
—
Air filter (prefilter)
z
Reluctance DC motor
z
Wipe-clean flat panel
z
Power-airflow flap
—
Washable grille
—
Power-airflow dual flaps
—
MOLD PROOF operation
—
Power-airflow diffuser
—
Good-sleep cooling operation
—
Wide-angle louvers
z
WEEKLY TIMER operation
z
Vertical auto-swing (up and down)
z
24-hour ON/OFF TIMER
z
Horizontal auto-swing (right and left)
—
NIGHT SET mode
z
3-D airflow
—
Auto-restart (after power failure)
z
Auto fan speed
z
Self-diagnosis (digital, LED) display
z
Indoor unit quiet operation
z
Wiring error check function
—
Anti-corrosion treatment of outdoor heat
exchanger
z
Multi-split / split type compatible indoor unit
z
z
Timer
Worry Free
“Reliability &
Durability”
NIGHT QUIET mode (automatic)
—
OUTDOOR UNIT QUIET operation (manual)
z
INTELLIGENT EYE operation
—
Quick warming function
(preheating operation)
—
H/P, C/O compatible indoor unit
Hot-start function
—
Flexible power supply correspondence
Automatic defrosting
—
Chargeless
Automatic operation
—
Either side drain (right or left)
—
Program dry operation
z
Power selection
—
Fan only
z
New POWERFUL operation (non-inverter)
—
Inverter POWERFUL operation
z
Priority-room setting
—
COOL / HEAT mode lock
—
HOME LEAVE operation
—
ECONO operation
z
Indoor unit [ON/OFF] button
z
Signal receiving sign
z
R/C with back light
z
Temperature display
—
Note: z : Holding Functions
— : No Functions
4
z
–10
~46
Category
FVXS25/35FV1B
RKS25/35G2V1B9
SiBE06-708_C
FVXS25/35FV1B
RKS25/35G2V1B9
Functions
Flexibility
Remote
Control
Remote
Controller
—
10 m
5-room centralized controller (option)
z
Remote control adaptor
(normal open pulse contact) (option)
z
Remote control adaptor
(normal open contact) (option)
z
DIII-NET compatible (adaptor) (option)
z
Wireless
z
Wired (option)
—
: Lower limit can be extended by cutting jumper
(25/35 class). (facility use only)
Refer to page 146 for detail.
List of Functions
SiBE06-708_C
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
z
z
Operation limit for cooling (°CDB)
–10
~46
–10
~46
Operation limit for heating (°CWB)
–15
~18
–15
~18
Inverter (with inverter power control)
PAM control
z
z
Standby electricity saving
—
—
FVXS50FV1B
RXS50F2V1B
Basic
Function
Functions
FVXS25/35FV1B
RXS25/35F2V1B
Category
FVXS50FV1B
RXS50F2V1B
Heat Pump
FVXS25/35FV1B
RXS25/35F2V1B
1.2
Functions
Air-purifying filter
—
—
Photocatalytic deodorizing filter
—
—
Air-purifying filter with photocatalytic
deodorizing function
—
—
Category
Health &
Clean
Functions
Oval scroll compressor
—
—
Swing compressor
z
z
Titanium apatite photocatalytic airpurifying filter
z
z
Rotary compressor
—
—
Air filter (prefilter)
z
z
Reluctance DC motor
z
z
Wipe-clean flat panel
z
z
Power-airflow flap
—
—
Washable grille
—
—
Power-airflow dual flaps
—
—
MOLD PROOF operation
—
—
Power-airflow diffuser
—
—
Wide-angle louvers
z
z
Vertical auto-swing (up and down)
z
Horizontal auto-swing (right and left)
Good-sleep cooling operation
—
—
WEEKLY TIMER operation
z
z
z
24-hour ON/OFF TIMER
z
z
—
—
NIGHT SET mode
z
z
3-D airflow
—
—
Auto-restart (after power failure)
z
z
Auto fan speed
z
z
Self-diagnosis (digital, LED) display
z
z
Indoor unit quiet operation
z
z
Wiring error check function
—
—
Anti-corrosion treatment of outdoor
heat exchanger
z
z
Multi-split / split type compatible indoor
unit
z
z
z
z
—
—
Timer
Worry Free
“Reliability &
Durability”
NIGHT QUIET mode (automatic)
—
—
OUTDOOR UNIT QUIET operation
(manual)
z
z
INTELLIGENT EYE operation
—
—
Quick warming function
(preheating operation)
z
z
H/P, C/O compatible indoor unit
Hot-start function
z
z
Flexible power supply correspondence
Automatic defrosting
z
z
Chargeless
Automatic operation
z
z
Either side drain (right or left)
—
—
Program dry operation
z
z
Power selection
—
—
5-room centralized controller (option)
z
z
Remote control adaptor
(normal open pulse contact) (option)
z
z
Remote control adaptor
(normal open contact) (option)
z
z
DIII-NET compatible (adaptor) (option)
z
z
Wireless
z
z
Wired (option)
—
—
Fan only
z
z
New POWERFUL operation
(non-inverter)
—
—
Inverter POWERFUL operation
z
z
Priority-room setting
—
—
COOL / HEAT mode lock
—
—
HOME LEAVE operation
—
—
ECONO operation
z
z
Indoor unit [ON/OFF] button
z
z
Signal receiving sign
z
z
R/C with back light
z
z
Temperature display
—
—
Note: z : Holding Functions
— : No Functions
List of Functions
Flexibility
Remote
Control
Remote
Controller
10 m 10 m
: Lower limit can be extended by cutting jumper
(25/35 class) or turning switch (50 class).
(facility use only)
Refer to page 146 for detail.
5
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
z
z
Operation limit for cooling (°CDB)
–10
~46
–10
~46
Operation limit for heating (°CWB)
–15
~18
–15
~18
Inverter (with inverter power control)
PAM control
z
z
Standby electricity saving
—
—
Air-purifying filter
—
—
Photocatalytic deodorizing filter
—
—
Air-purifying filter with photocatalytic
deodorizing function
—
—
Category
Health &
Clean
Functions
Oval scroll compressor
—
—
Swing compressor
z
z
Titanium apatite photocatalytic airpurifying filter
z
z
Rotary compressor
—
—
Air filter (prefilter)
z
z
Reluctance DC motor
z
z
Wipe-clean flat panel
z
z
Power-airflow flap
—
—
Washable grille
—
—
Power-airflow dual flaps
—
—
MOLD PROOF operation
—
—
Power-airflow diffuser
—
—
Good-sleep cooling operation
—
—
Wide-angle louvers
z
z
WEEKLY TIMER operation
z
z
Vertical auto-swing (up and down)
z
z
24-hour ON/OFF TIMER
z
z
Horizontal auto-swing (right and left)
—
—
NIGHT SET mode
z
z
3-D airflow
—
—
Auto-restart (after power failure)
z
z
Auto fan speed
z
z
Self-diagnosis (digital, LED) display
z
z
Wiring error check function
—
—
Anti-corrosion treatment of outdoor
heat exchanger
z
z
Multi-split / split type compatible indoor
unit
z
z
z
z
—
—
Timer
Worry Free
“Reliability &
Durability”
Indoor unit quiet operation
z
z
NIGHT QUIET mode (automatic)
—
—
OUTDOOR UNIT QUIET operation
(manual)
z
z
INTELLIGENT EYE operation
—
—
Quick warming function
(preheating operation)
z
z
H/P, C/O compatible indoor unit
Hot-start function
z
z
Flexible power supply correspondence
Automatic defrosting
z
z
Chargeless
Automatic operation
z
z
Either side drain (right or left)
—
—
Program dry operation
z
z
Power selection
—
—
5-room centralized controller (option)
z
z
Remote control adaptor
(normal open pulse contact) (option)
z
z
Remote control adaptor
(normal open contact) (option)
z
z
DIII-NET compatible (adaptor) (option)
z
z
Fan only
z
z
New powerful operation
(non-inverter)
—
—
Inverter POWERFUL operation
z
z
Priority-room setting
—
—
COOL / HEAT mode lock
—
—
HOME LEAVE operation
—
—
ECONO operation
z
z
Indoor unit [ON/OFF] button
z
z
Signal receiving sign
z
z
R/C with back light
z
z
Temperature display
—
—
Note: z : Holding Functions
— : No Functions
6
FVXS50FV1B
RXS50G2V1B
Basic
Function
Functions
FVXS25/35FV1B
RXS25/35G2V1B
Category
FVXS50FV1B
RXS50G2V1B
SiBE06-708_C
FVXS25/35FV1B
RXS25/35G2V1B
Functions
Flexibility
Remote
Control
Remote
Controller
10 m 10 m
Wireless
z
z
Wired (option)
—
—
: Lower limit can be extended by cutting jumper.
(facility use only)
Refer to page 146 for detail.
List of Functions
Basic
Function
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
Functions
Inverter (with inverter power control)
z
Operation limit for cooling (°CDB)
–10
~46
Operation limit for heating (°CWB)
–15
~18
PAM control
z
Standby electricity saving
—
Category
Health &
Clean
Functions
FVXS25/35FV1B
RXS25/35G2V1B9
Category
Functions
FVXS25/35FV1B
RXS25/35G2V1B9
SiBE06-708_C
Air-purifying filter
—
Photocatalytic deodorizing filter
—
Air-purifying filter with photocatalytic
deodorizing function
—
Titanium apatite photocatalytic air-purifying
filter
z
Oval scroll compressor
—
Swing compressor
z
Rotary compressor
—
Air filter (prefilter)
z
Reluctance DC motor
z
Wipe-clean flat panel
z
Power-airflow flap
—
Washable grille
—
Power-airflow dual flaps
—
MOLD PROOF operation
—
Power-airflow diffuser
—
Wide-angle louvers
z
Vertical auto-swing (up and down)
Good-sleep cooling operation
—
WEEKLY TIMER operation
z
z
24-hour ON/OFF TIMER
z
Horizontal auto-swing (right and left)
—
NIGHT SET mode
z
3-D airflow
—
Auto-restart (after power failure)
z
Auto fan speed
z
Self-diagnosis (digital, LED) display
z
Indoor unit quiet operation
z
Wiring error check function
—
Anti-corrosion treatment of outdoor heat
exchanger
z
Multi-split / split type compatible indoor unit
z
Timer
Worry Free
“Reliability &
Durability”
NIGHT QUIET mode (automatic)
—
OUTDOOR UNIT QUIET operation (manual)
z
INTELLIGENT EYE operation
—
Quick warming function (preheating operation)
z
H/P, C/O compatible indoor unit
z
Hot-start function
z
Flexible power supply correspondence
—
Automatic defrosting
z
Chargeless
Automatic operation
z
Either side drain (right or left)
—
Program dry operation
z
Power selection
—
Fan only
z
New POWERFUL operation (non-inverter)
—
Inverter POWERFUL operation
z
Priority-room setting
—
COOL / HEAT mode lock
—
HOME LEAVE operation
—
ECONO operation
z
Indoor unit [ON/OFF] button
z
Signal receiving sign
z
R/C with back light
z
Temperature display
—
Note: z : Holding Functions
— : No Functions
List of Functions
Flexibility
Remote
Control
Remote
Controller
10 m
5-room centralized controller (option)
z
Remote control adaptor (normal open pulse
contact) (option)
z
Remote control adaptor (normal open contact)
(option)
z
DIII-NET compatible (adaptor) (option)
z
Wireless
z
Wired (option)
—
: Lower limit can be extended by cutting jumper.
(facility use only)
Refer to page 146 for detail.
7
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
z
z
Operation limit for cooling (°CDB)
–10
~46
–10
~46
Operation limit for heating (°CWB)
–15
~18
–15
~18
PAM control
z
z
Standby electricity saving
—
—
Inverter (with inverter power control)
Air-purifying filter
—
—
Photocatalytic deodorizing filter
—
—
Air-purifying filter with photocatalytic
deodorizing function
—
—
Category
Health &
Clean
Functions
Oval scroll compressor
—
—
Swing compressor
z
z
Titanium apatite photocatalytic
air-purifying filter
z
z
Rotary compressor
—
—
Air filter (prefilter)
z
z
Reluctance DC motor
z
z
Wipe-clean flat panel
z
z
Power-airflow flap
—
—
Washable grille
—
—
Power-airflow dual flaps
—
—
MOLD PROOF operation
—
—
Power-airflow diffuser
—
—
Good-sleep cooling operation
—
—
Wide-angle louvers
z
z
WEEKLY TIMER operation
z
z
Vertical auto-swing (up and down)
z
z
24-hour ON/OFF TIMER
z
z
Horizontal auto-swing (right and left)
—
—
NIGHT SET mode
z
z
3-D airflow
—
—
Auto-restart (after power failure)
z
z
Auto fan speed
z
z
Self-diagnosis (digital, LED) display
z
z
Indoor unit quiet operation
z
z
Wiring error check function
—
—
Anti-corrosion treatment of outdoor
heat exchanger
z
z
Multi-split / split type compatible indoor
unit
z
z
z
z
—
—
Timer
Worry Free
“Reliability &
Durability”
NIGHT QUIET mode (automatic)
—
—
OUTDOOR UNIT QUIET operation
(manual)
z
z
INTELLIGENT EYE operation
—
—
Quick warming function (preheating
operation)
z
z
H/P, C/O compatible indoor unit
Hot-start function
z
z
Flexible power supply correspondence
Automatic defrosting
z
z
Chargeless
Automatic operation
z
z
Either side drain (right or left)
—
—
Program dry operation
z
z
Power selection
—
—
Fan only
z
z
5-room centralized controller (option)
z
z
New POWERFUL operation
(non-inverter)
—
—
z
z
z
Remote control adaptor (normal open
pulse contact) (option)
z
Inverter POWERFUL operation
Remote control adaptor (normal open
contact) (option)
z
z
DIII-NET compatible (adaptor) (option)
z
z
Priority-room setting
—
—
COOL / HEAT mode lock
—
—
HOME LEAVE operation
—
—
ECONO operation
z
z
Indoor unit [ON/OFF] button
z
z
Signal receiving sign
z
z
R/C with back light
z
z
Temperature display
—
—
Note: z : Holding Functions
— : No Functions
8
FVXS50FV1B
RXS50J2V1B
Basic
Function
Functions
FVXS25/35FV1B
RXS25/35J2V1B
Category
FVXS50FV1B
RXS50J2V1B
SiBE06-708_C
FVXS25/35FV1B
RXS25/35J2V1B
Functions
Flexibility
Remote
Control
Remote
Controller
10 m 10 m
Wireless
z
z
Wired (option)
—
—
: Lower limit can be extended by cutting jumper
(25/35 class) or turning switch (50 class).
(facility use only)
Refer to page 146 for detail.
List of Functions
Compressor
Comfortable
Airflow
Comfort
Control
Operation
Lifestyle
Convenience
FVXS50FV1B
RXS50K2V1B
Air-purifying filter
—
—
Photocatalytic deodorizing filter
—
—
Air-purifying filter with photocatalytic
deodorizing function
—
—
Category
z
z
Operation limit for cooling (°CDB)
–10
~46
–10
~46
Operation limit for heating (°CWB)
–15
~18
–15
~18
Inverter (with inverter power control)
FVXS25/35FV1B
RXS25/35K2V1B, RXS25K3V1B
Basic
Function
Functions
Functions
FVXS50FV1B
RXS50K2V1B
Category
Functions
FVXS25/35FV1B
RXS25/35K2V1B, RXS25K3V1B
SiBE06-708_C
PAM control
z
z
Standby electricity saving
—
—
Health &
Clean
Oval scroll compressor
—
—
Swing compressor
z
z
Titanium apatite photocatalytic airpurifying filter
z
z
Rotary compressor
—
—
Air filter (prefilter)
z
z
Reluctance DC motor
z
z
Wipe-clean flat panel
z
z
Power-airflow flap
—
—
Washable grille
—
—
Power-airflow dual flaps
—
—
MOLD PROOF operation
—
—
Power-airflow diffuser
—
—
Good-sleep cooling operation
—
—
Wide-angle louvers
z
z
WEEKLY TIMER operation
z
z
Vertical auto-swing (up and down)
z
z
24-hour ON/OFF TIMER
z
z
Horizontal auto-swing (right and left)
—
—
NIGHT SET mode
z
z
3-D airflow
—
—
Auto-restart (after power failure)
z
z
Auto fan speed
z
z
Self-diagnosis (digital, LED) display
z
z
Indoor unit quiet operation
z
z
Wiring error check function
—
—
Anti-corrosion treatment of outdoor
heat exchanger
z
z
Multi-split / split type compatible indoor
unit
z
z
z
z
—
—
Timer
Worry Free
“Reliability &
Durability”
NIGHT QUIET mode (automatic)
—
—
OUTDOOR UNIT QUIET operation
(manual)
z
z
INTELLIGENT EYE operation
—
—
Quick warming function
(preheating operation)
z
z
H/P, C/O compatible indoor unit
Hot-start function
z
z
Flexible power supply correspondence
Automatic defrosting
z
z
Chargeless
Automatic operation
z
z
Either side drain (right or left)
—
—
Program dry operation
z
z
Power selection
—
—
5-room centralized controller (option)
z
z
Remote control adaptor
(normal open pulse contact) (option)
z
z
Remote control adaptor
(normal open contact) (option)
z
z
DIII-NET compatible (adaptor) (option)
z
z
Fan only
z
z
New powerful operation
(non-inverter)
—
—
Inverter POWERFUL operation
z
z
Priority-room setting
—
—
COOL / HEAT mode lock
—
—
HOME LEAVE operation
—
—
ECONO operation
z
z
Indoor unit [ON/OFF] button
z
z
Signal receiving sign
z
z
R/C with back light
z
z
Temperature display
—
—
Note: z : Holding Functions
— : No Functions
List of Functions
Flexibility
Remote
Control
Remote
Controller
10 m 10 m
Wireless
z
z
Wired (option)
—
—
: Lower limit can be extended by cutting jumper.
(facility use only)
Refer to page 146 for detail.
9
SiBE06-708_C
Part 2
Specifications
1. Specifications ........................................................................................11
1.1 Cooling Only...........................................................................................11
1.2 Heat Pump .............................................................................................16
10
Specifications
SiBE06-708_C
Specifications
1. Specifications
1.1 Cooling Only
50 Hz, 220 - 230 - 240 V
Model
Indoor Unit
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
Airflow Rate
kW
Btu/h
kcal/h
L/h
A
FVXS25FV1B
RKS25F2V1B
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
FVXS35FV1B
RKS35F2V1B
3.5 (1.4 ~ 3.8)
11,900 (4,800 ~ 13,000)
3,010 (1,200 ~ 3,270)
1.9
4.9 - 4.7 - 4.5
W
570 (300 ~ 920)
1,020 (300 ~ 1,250)
%
W/W
mm
mm
mm
74.0 - 75.1 - 74.2
4.39
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
94.6 - 94.4 - 94.4
3.43
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
m
m
m
g/m
M
L
SL
20
20
mm
mm
kg
kg
FVXS25FV1B
White
8.2 (290)
6.5 (229)
4.8 (169)
4.1 (146)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
15
48.7 - 50.2 - 52.1
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
FVXS35FV1B
White
8.5 (300)
6.7 (237)
4.9 (174)
4.5 (158)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
15
48.7 - 50.2 - 52.1
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
dB(A)
38 / 32 / 26 / 23
39 / 33 / 27 / 24
dB
W
A
W
%
A
mm
mm
kg
kg
54
RKS25F2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23NXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
23.4 (826)
Propeller
23
3.4 - 3.2 - 3.1
555
74.2 - 75.4 - 74.6
3.5
550 × 765 × 285
612 × 906 × 364
34
40
55
RKS35F2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23NXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
23.4 (826)
Propeller
23
4.8 - 4.6 - 4.4
1,005
95.1 - 95.0 - 95.1
4.9
550 × 765 × 285
612 × 906 × 364
34
40
dB(A)
46 / 43
47 / 44
dB
61
3D056295A
62
3D056296A
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
L
Type
Fan
Motor Output
Running Current
Power Consumption
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
Note:
W
Steps
A
W
%
W
L
kg
m³/min
(cfm)
„ 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
7.5 m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
11
Specifications
SiBE06-708_C
50 Hz, 220 - 230 - 240 V
Model
Indoor Unit
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
HH
Airflow Rate H
L
Type
Fan
Motor Output
Running Current
Power Consumption
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.
Note:
kW
Btu/h
kcal/h
L/h
A
FVXS50FV1B
RKS50F2V1B
5.0 (1.4 ~ 5.6)
17,100 (4,800 ~ 19,100)
4,300 (1,200 ~ 4,820)
2.9
7.2 - 6.8 - 6.6
W
1,550 (500 ~ 2,000)
%
W/W
mm
mm
mm
99.2 - 99.1 - 99.4
3.23
φ 6.4
φ 12.7
φ 20.0
Both Liquid and Gas Pipes
30
20
10
m
m
m
g/m
mm
mm
kg
kg
dB(A)
44 / 40 / 36 / 32
dB
W
A
W
%
A
mm
mm
kg
kg
56
RKS50F2V1B
Ivory White
Hermetically Sealed Swing Type
2YC36BXD
1,100
FVC50K
0.65
R-410A
1.5
50.9 (1,797)
48.9 (1,727)
41.7 (1,472)
Propeller
53
7.02 - 6.64 - 6.44
1,523
98.6 - 99.7 - 98.5
7.2
735 × 825 × 300
797 × 960 × 390
48
52
dB(A)
47 / 44
dB
61
3D056297
m³/min
(cfm)
W
Steps
A
W
%
W
L
kg
m³/min
(cfm)
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
12
20
FVXS50FV1B
White
10.7 (378)
9.2 (326)
7.8 (274)
6.6 (233)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.18 - 0.17 - 0.16
27
68.1 - 69.1 - 70.3
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
Piping Length
7.5 m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Specifications
SiBE06-708_C
Specifications
50 Hz, 220 - 230 - 240 V
Model
Indoor Unit
Outdoor Unit
FVXS35FV1B
RKS35G2V1B
3.5 (1.4 ~ 3.8)
11,900 (4,800 ~ 13,000)
3,010 (1,200 ~ 3,270)
1.9
4.9 - 4.7 - 4.5
W
570 (300 ~ 920)
1,020 (300 ~ 1,250)
%
W/W
mm
mm
mm
74.0 - 75.1 - 74.2
4.39
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
94.6 - 94.4 - 94.4
3.43
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
kW
Btu/h
kcal/h
L/h
A
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
Airflow Rate
FVXS25FV1B
RKS25G2V1B
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
m
m
m
g/m
M
L
SL
20
20
mm
mm
kg
kg
FVXS25FV1B
White
8.2 (290)
6.5 (229)
4.8 (169)
4.1 (146)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
15
48.7 - 50.2 - 52.1
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
FVXS35FV1B
White
8.5 (300)
6.7 (237)
4.9 (174)
4.5 (158)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
15
48.7 - 50.2 - 52.1
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
dB(A)
38 / 32 / 26 / 23
39 / 33 / 27 / 24
dB
W
A
W
%
A
mm
mm
kg
kg
54
RKS25G2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AFXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
31.4 (1,109)
Propeller
50
3.4 - 3.2 - 3.1
555
74.2 - 75.4 - 74.6
3.2
550 × 765 × 285
612 × 906 × 364
34
40
55
RKS35G2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AFXD
600
FVC50K
0.375
R-410A
1.2
36.0 (1,272)
31.4 (1,109)
Propeller
50
4.8 - 4.6 - 4.4
1,005
95.1 - 95.0 - 95.1
4.4
550 × 765 × 285
612 × 906 × 364
34
40
dB(A)
46 / 43
48 / 44
dB
61
3D059858
63
3D059859
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current
Power Consumption
Power Factor
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Fan
Note:
W
Steps
A
W
%
W
L
kg
m³/min
(cfm)
„ 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
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
13
Specifications
SiBE06-708_C
50 Hz, 220 - 230 - 240 V
Model
Indoor Unit
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
Airflow Rate
kW
Btu/h
kcal/h
L/h
A
FVXS50FV1B
RKS50G2V1B
5.0 (1.4 ~ 5.6)
17,100 (4,800 ~ 19,100)
4,300 (1,200 ~ 4,820)
2.9
7.2 - 6.8 - 6.6
W
1,550 (500 ~ 2,000)
%
W/W
mm
mm
mm
99.2 - 99.1 - 99.4
3.23 (2.80 ~ 2.80)
φ 6.4
φ 12.7
φ 20.0
Both Liquid and Gas Pipes
30
20
10
m
m
m
g/m
M
L
SL
mm
mm
kg
kg
dB(A)
44 / 40 / 36 / 32
dB
W
A
W
%
A
mm
mm
kg
kg
56
RKS50G2V1B
Ivory White
Hermetically Sealed Swing Type
2YC36BXD
1,100
FVC50K
0.65
R-410A
1.7
50.9 (1,797)
48.9 (1,727)
Propeller
53
7.02 - 6.64 - 6.44
1,523 - 1,523 - 1,523
98.6 - 99.7 - 98.5
7.2
735 × 825 × 300
797 × 960 × 390
47
52
dB(A)
48 / 44
dB
62
3D059860A
m³/min
(cfm)
Type
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current
Power Consumption
Power Factor
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Fan
Note:
W
Steps
A
W
%
W
L
kg
m³/min
(cfm)
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
14
20
FVXS50FV1B
White
10.7 (378)
9.2 (325)
7.8 (275)
6.6 (233)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.18 - 0.17 - 0.16
27 - 27 - 27
68.1 - 69.1 - 70.3
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
Piping Length
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Specifications
SiBE06-708_C
Specifications
50 Hz, 220 - 230 - 240 V
Model
Indoor Unit
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current
Power Consumption
Power Factor
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Note:
FVXS25FV1B
RKS25G2V1B9
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
FVXS35FV1B
RKS35G2V1B9
3.5 (1.4 ~ 3.8)
11,900 (4,800 ~ 13,000)
3,010 (1,200 ~ 3,270)
1.9
4.9 - 4.7 - 4.5
W
570 (300 ~ 920)
1,020 (300 ~ 1,250)
%
W/W
mm
mm
mm
74.0 - 75.1 - 74.2
4.39 (4.33 ~ 3.26)
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
94.6 - 94.4 - 94.4
3.43 (4.67 ~ 3.04)
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
kW
Btu/h
kcal/h
L/h
A
m
m
m
g/m
20
20
mm
mm
kg
kg
FVXS25FV1B
White
8.2 (290)
6.5 (230)
4.8 (169)
4.1 (145)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
15 - 15 - 15
48.7 - 50.2 - 52.1
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
FVXS35FV1B
White
8.5 (300)
6.7 (237)
4.9 (173)
4.5 (159)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
15 - 15 - 15
48.7 - 50.2 - 52.1
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
dB(A)
38 / 32 / 26 / 23
39 / 33 / 27 / 24
dB
W
A
W
%
A
mm
mm
kg
kg
54
RKS25G2V1B9
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
30.1 (1,063)
Propeller
23
3.4 - 3.2 - 3.1
555 - 555 - 555
74.2 - 75.4 - 74.6
3.5
550 × 765 × 285
612 × 906 × 364
34
38
55
RKS35G2V1B9
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.2
36.0 (1,271)
30.1 (1,063)
Propeller
23
4.8 - 4.6 - 4.4
1,005 - 1,005 - 1,005
95.1 - 95.0 - 95.1
4.9
550 × 765 × 285
612 × 906 × 364
34
38
dB(A)
46 / 43
48 / 44
dB
61
3D065722A
63
3D065723A
m³/min
(cfm)
W
Steps
A
W
%
W
L
kg
m³/min
(cfm)
„ 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
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
15
Specifications
1.2
SiBE06-708_C
Heat Pump
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS25FV1B
RXS25F2V1B
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
L
Type
Fan
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor (Rated)
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H/L
Sound
Sound Power H
Drawing No.
Note:
Cooling
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
Heating
3.4 (1.3 ~ 4.5)
11,600 (4,400 ~ 17,100)
2,920 (1,120 ~ 4,300)
—
4.5 - 4.3 - 4.1
Cooling
3.5 (1.4 ~ 3.8)
11,900 (4,800 ~ 13,000)
3,010 (1,200 ~ 3,270)
1.9
4.9 - 4.7 - 4.5
Heating
4.5 (1.4 ~ 5.0)
15,400 (4,800 ~ 17,100)
3,870 (1,200 ~ 4,300)
—
5.9 - 5.6 - 5.4
W
570 (300 ~ 920)
790 (290 ~ 1,390)
1,020 (300 ~ 1,250)
1,220 (310 ~ 1,880)
%
W/W
mm
mm
mm
74.0 - 75.1 - 74.2
4.39
79.8 - 79.9 - 80.3
4.30
94.6 - 94.4 - 94.4
3.43
94.0 - 94.7 - 94.1
3.69
kW
Btu/h
kcal/h
L/h
A
φ 6.4
φ 9.5
φ 20
Both Liquid and Gas Pipes
20
15
10
m
m
m
g/m
m³/min
(cfm)
W
Steps
A
W
%
mm
mm
kg
kg
φ 6.4
φ 9.5
φ 20
Both Liquid and Gas Pipes
20
15
10
20
20
FVXS25FV1B
White
FVXS35FV1B
White
8.2 (290)
6.5 (229)
4.8 (169)
4.1 (146)
8.8 (311)
6.9 (244)
5.0 (178)
4.4 (155)
8.5 (300)
6.7 (237)
4.9 (174)
4.5 (158)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15
17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
38 / 32 / 26 / 23
38 / 32 / 26 / 23
39 / 33 / 27 / 24
dB
54
54
55
W
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
39 / 33 / 27 / 24
55
RXS35F2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23NXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
30.2 (1,066)
23.4 (826)
28.3 (999)
Propeller
23
4.8 - 4.6 - 4.4
5.8 - 5.5 - 5.3
1,005
1,203
95.1 - 95.0 - 95.1
94.3 - 95.1 - 94.6
5.9
550 × 765 × 285
612 × 906 × 364
34
40
RXS25F2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23NXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
30.2 (1,066)
23.4 (826)
28.3 (999)
Propeller
23
3.4 - 3.2 - 3.1
4.4 - 4.2 - 4.0
555
773
74.2 - 75.4 - 74.6
80.3 - 80.0 - 80.5
4.5
550 × 765 × 285
612 × 906 × 364
34
40
dB(A)
46 / 43
47 / 44
47 / 44
dB
61
62
62
3D056274A
48 / 45
63
3D056275A
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
9.4 (332)
7.3 (258)
5.2 (184)
4.7 (168)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15
17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
dB(A)
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
16
FVXS35FV1B
RXS35F2V1B
Piping Length
7.5 m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Specifications
SiBE06-708_C
Specifications
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS50FV1B
RXS50F2V1B
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
HH
Airflow Rate H
L
Type
Fan
Motor Output
Running Current
Power Consumption
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.
Note:
kW
Btu/h
kcal/h
L/h
A
Cooling
5.0 (1.4 ~ 5.6)
17,100 (4,800 ~ 19,100)
4,300 (1,200 ~ 4,820)
2.9
7.2 - 6.8 - 6.6
Heating
5.8 (1.4 ~ 8.1)
19,800 (4,800 ~ 27,600)
4,990 (1,200 ~ 6,970)
W
1,550 (500 ~ 2,000)
1,600 (500 ~ 2,600)
%
W/W
mm
mm
mm
99.2 - 99.1 - 99.4
3.23
99.6 - 99.3 - 99.5
3.63
φ 6.4
φ 12.7
φ 20.0
Both Liquid and Gas Pipes
30
20
10
m
m
m
g/m
20
FVXS50FV1B
White
m³/min
(cfm)
10.7 (378)
9.2 (326)
7.8 (274)
6.6 (233)
A
W
%
11.8 (417)
10.1 (358)
8.5 (300)
7.1 (250)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
W
Steps
0.18 - 0.17 - 0.16
27
68.1 - 69.1 - 70.3
0.20 - 0.19 - 0.18
34
77.3 - 77.8 - 78.7
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
mm
mm
kg
kg
dB(A)
44 / 40 / 36 / 32
dB
56
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
45 / 40 / 36 / 32
57
RXS50F2V1B
Ivory White
Hermetically Sealed Swing Type
2YC36BXD
1,100
FVC50K
0.65
R-410A
1.5
W
—
50.9 (1,797)
48.9 (1,727)
41.7(1,472)
45.0 (1,589)
45.0 (1,589)
Propeller
53
7.02 - 6.64 - 6.44
1,523
98.6 - 99.7 - 98.5
7.14 - 6.83 - 6.54
1,566
99.7 - 99.7 - 99.8
7.3
735 × 825 × 300
797 × 960 × 390
48
53
dB(A)
47 / 44
dB
61
48 / 45
62
3D056276
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
Specifications
—
7.3 - 7.0 - 6.7
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
Piping Length
7.5 m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
17
Specifications
SiBE06-708_C
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS25FV1B
RXS25G2V1B
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor (Rated)
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Note:
Cooling
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
Heating
3.4 (1.3 ~ 4.5)
11,600 (4,400 ~ 17,100)
2,920 (1,120 ~ 4,300)
—
4.5 - 4.3 - 4.1
Cooling
3.5 (1.4 ~ 3.8)
11,900 (4,800 ~ 13,000)
3,010 (1,200 ~ 3,270)
1.9
4.9 - 4.7 - 4.5
Heating
4.5 (1.4 ~ 5.0)
15,400 (4,800 ~ 17,100)
3,870 (1,200 ~ 4,300)
—
5.9 - 5.6 - 5.4
W
570 (300 ~ 920)
790 (290 ~ 1,390)
1,020 (300 ~ 1,250)
1,220 (310 ~ 1,880)
%
W/W
mm
mm
mm
74.0 - 75.1 - 74.2
4.39
79.8 - 79.9 - 80.3
4.30
94.6 - 94.4 - 94.4
3.43
94.0 - 94.7 - 94.1
3.69
kW
Btu/h
kcal/h
L/h
A
φ 6.4
φ 9.5
φ 20
Both Liquid and Gas Pipes
20
15
10
m
m
m
g/m
m³/min
(cfm)
W
Steps
A
W
%
mm
mm
kg
kg
φ 6.4
φ 9.5
φ 20
Both Liquid and Gas Pipes
20
15
10
20
20
FVXS25FV1B
White
FVXS35FV1B
White
8.2 (290)
6.5 (229)
4.8 (169)
4.1 (146)
8.8 (311)
6.9 (244)
5.0 (178)
4.4 (155)
8.5 (300)
6.7 (237)
4.9 (174)
4.5 (158)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15
17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
38 / 32 / 26 / 23
38 / 32 / 26 / 23
39 / 33 / 27 / 24
dB
54
54
55
W
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
39 / 33 / 27 / 24
55
RXS35G2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AFXD
600
FVC50K
0.375
R-410A
1.2
36.0 (1,272)
30.2 (1,066)
31.4 (1,109)
22.6 (798)
Propeller
50
4.8 - 4.6 - 4.4
5.8 - 5.5 - 5.3
1,005
1,203
95.1 - 95.0 - 95.1
94.3 - 95.1 - 94.6
4.8
550 × 765 × 285
612 × 906 × 364
34
40
RXS25G2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AFXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
30.2 (1,066)
31.4 (1,109)
22.6 (798)
Propeller
50
3.4 - 3.2 - 3.1
4.4 - 4.2 - 4.0
555
773
74.2 - 75.4 - 74.6
80.3 - 80.0 - 80.5
4.3
550 × 765 × 285
612 × 906 × 364
34
40
dB(A)
46 / 43
47 / 44
48 / 44
dB
61
62
63
3D059825
48 / 45
63
3D059826
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
9.4 (332)
7.3 (258)
5.2 (184)
4.7 (168)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15
17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
dB(A)
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
18
FVXS35FV1B
RXS35G2V1B
Piping Length
5.0 m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Specifications
SiBE06-708_C
Specifications
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS50FV1B
RXS50G2V1B
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current
Power Consumption
Power Factor
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Note:
kW
Btu/h
kcal/h
L/h
A
Cooling
5.0 (1.4 ~ 5.6)
17,100 (4,800 ~ 19,100)
4,300 (1,200 ~ 4,820)
2.9
7.2 - 6.8 - 6.6
Heating
5.8 (1.4 ~ 8.1)
19,800 (4,800 ~ 27,600)
4,990 (1,200 ~ 6,970)
W
1,550 (500 ~ 2,000)
1,600 (500 ~ 2,600)
%
W/W
mm
mm
mm
99.2 - 99.1 - 99.4
3.23 (2.80 ~ 2.80)
99.6 - 99.3 - 99.5
3.63 (2.80 ~ 3.12)
φ 6.4
φ 12.7
φ 20.0
Both Liquid and Gas Pipes
30
20
10
m
m
m
g/m
20
FVXS50FV1B
White
m³/min
(cfm)
10.7 (378)
9.2 (325)
7.8 (275)
6.6 (233)
A
W
%
11.8 (417)
10.1 (357)
8.5 (300)
7.1 (251)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
W
Steps
0.18 - 0.17 - 0.16
27 - 27 - 27
68.1 - 69.1 - 70.3
0.20 - 0.19 - 0.18
34 - 34 - 34
77.3 - 77.8 - 78.7
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
mm
mm
kg
kg
dB(A)
44 / 40 / 36 / 32
dB
56
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
45 / 40 / 36 / 32
57
RXS50G2V1B
Ivory White
Hermetically Sealed Swing Type
2YC36BXD
1,100
FVC50K
0.65
R-410A
1.7
W
50.9 (1,797)
48.9 (1,727)
45.0 (1,589)
43.1 (1,522)
Propeller
53
7.02 - 6.64 - 6.44
1,523 - 1,523 - 1,523
98.6 - 99.7 - 98.5
7.14 - 6.83 - 6.54
1,566 - 1,566 - 1,566
99.7 - 99.7 - 99.8
7.3
735 × 825 × 300
797 × 960 × 390
48
53
dB(A)
48 / 44
dB
62
48 / 45
62
3D059827A
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
Specifications
—
7.3 - 7.0 - 6.7
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
Piping Length
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
19
Specifications
SiBE06-708_C
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS25FV1B
RXS25G2V1B9
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor (Rated)
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Note:
Cooling
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
Heating
3.4 (1.3 ~ 4.5)
11,600 (4,400 ~ 17,100)
2,920 (1,120 ~ 4,300)
—
4.5 - 4.3 - 4.1
Cooling
3.5 (1.4 ~ 3.8)
11,900 (4,800 ~ 13,000)
3,010 (1,200 ~ 3,270)
1.9
4.9 - 4.7 - 4.5
Heating
4.5 (1.4 ~ 5.0)
15,400 (4,800 ~ 17,100)
3,870 (1,200 ~ 4,300)
—
5.9 - 5.6 - 5.4
W
570 (300 ~ 920)
790 (290 ~ 1,390)
1,020 (300 ~ 1,250)
1,220 (310 ~ 1,880)
%
W/W
mm
mm
mm
74.0 - 75.1 - 74.2
4.39 (4.33 ~ 3.26)
79.8 - 79.9 - 80.3
4.30 (4.48 ~ 3.24)
94.6 - 94.4 - 94.4
3.43 (4.67 ~ 3.04)
94.0 - 94.7 - 94.1
3.69 (4.52 ~ 2.66)
kW
Btu/h
kcal/h
L/h
A
φ 6.4
φ 9.5
φ 20
Both Liquid and Gas Pipes
20
15
10
m
m
m
g/m
m³/min
(cfm)
W
Steps
A
W
%
mm
mm
kg
kg
φ 6.4
φ 9.5
φ 20
Both Liquid and Gas Pipes
20
15
10
20
20
FVXS25FV1B
White
FVXS35FV1B
White
8.2 (290)
6.5 (230)
4.8 (169)
4.1 (145)
8.8 (311)
6.9 (244)
5.0 (177)
4.4 (155)
8.5 (300)
6.7 (237)
4.9 (173)
4.5 (159)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15 - 15 - 15
17 - 17 - 17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
38 / 32 / 26 / 23
38 / 32 / 26 / 23
39 / 33 / 27 / 24
dB
54
54
55
W
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
RXS25G2V1B9
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
28.3 (999)
30.1 (1,063)
25.6 (904)
Propeller
23
3.4 - 3.2 - 3.1
4.4 - 4.2 - 4.0
555 - 555 - 555
773 - 773 - 773
74.2 - 75.4 - 74.6
80.3 - 80.0 - 80.5
4.5
550 × 765 × 285
612 × 906 × 364
34
38
39 / 33 / 27 / 24
55
RXS35G2V1B9
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.2
36.0 (1,271)
28.3 (999)
30.1 (1,063)
25.6 (904)
Propeller
23
4.8 - 4.6 - 4.4
5.8 - 5.5 - 5.3
1,005 - 1,005 - 1,005
1,203 - 1,203 - 1,203
95.1 - 95.0 - 95.1
94.3 - 95.1 - 94.6
5.9
550 × 765 × 285
612 × 906 × 364
34
38
dB(A)
46 / 43
47 / 44
48 / 44
dB
61
62
63
3D065718A
48 / 45
63
3D065719A
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
9.4 (332)
7.3 (258)
5.2 (184)
4.7 (166)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15 - 15 - 15
17 - 17 - 17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
dB(A)
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
20
FVXS35FV1B
RXS35G2V1B9
Piping Length
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Specifications
SiBE06-708_C
Specifications
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS25FV1B
RXS25J2V1B
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor (Rated)
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Note:
Cooling
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
Heating
3.4 (1.3 ~ 4.5)
11,600 (4,400 ~ 17,100)
2,920 (1,120 ~ 4,300)
—
4.5 - 4.3 - 4.1
Cooling
3.5 (1.4 ~ 3.8)
11,900 (4,800 ~ 13,000)
3,010 (1,200 ~ 3,270)
1.9
4.9 - 4.7 - 4.5
Heating
4.5 (1.4 ~ 5.0)
15,400 (4,800 ~ 17,100)
3,870 (1,200 ~ 4,300)
—
5.9 - 5.6 - 5.4
W
570 (300 ~ 920)
790 (290 ~ 1,390)
1,020 (300 ~ 1,250)
1,220 (310 ~ 1,880)
%
W/W
mm
mm
mm
74.0 - 75.1 - 74.2
4.39
79.8 - 79.9 - 80.3
4.30
94.6 - 94.4 - 94.4
3.43
94.0 - 94.7 - 94.1
3.69
kW
Btu/h
kcal/h
L/h
A
φ 6.4
φ 9.5
φ 20
Both Liquid and Gas Pipes
20
15
10
m
m
m
g/m
m³/min
(cfm)
W
Steps
A
W
%
mm
mm
kg
kg
φ 6.4
φ 9.5
φ 20
Both Liquid and Gas Pipes
20
15
10
20
20
FVXS25FV1B
White
FVXS35FV1B
White
8.2 (290)
6.5 (230)
4.8 (169)
4.1 (145)
8.8 (311)
6.9 (244)
5.0 (177)
4.4 (155)
8.5 (300)
6.7 (237)
4.9 (173)
4.5 (159)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15 - 15 - 15
17 - 17 - 17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
38 / 32 / 26 / 23
38 / 32 / 26 / 23
39 / 33 / 27 / 24
dB
54
54
55
W
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
RXS25J2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.0
33.5 (1,183)
28.3 (999)
30.1 (1,063)
25.6 (904)
Propeller
23
3.4 - 3.2 - 3.1
4.4 - 4.2 - 4.0
555 - 555 - 555
773 - 773 - 773
74.2 - 75.4 - 74.6
80.3 - 80.0 - 80.5
4.5
550 × 765 × 285
612 × 906 × 364
34
38
39 / 33 / 27 / 24
55
RXS35J2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.2
36.0 (1,271)
28.3 (999)
30.1 (1,063)
25.6 (904)
Propeller
23
4.8 - 4.6 - 4.4
5.8 - 5.5 - 5.3
1,005 - 1,005 - 1,005
1,203 - 1,203 - 1,203
95.1 - 95.0 - 95.1
94.3 - 95.1 - 94.6
5.9
550 × 765 × 285
612 × 906 × 364
34
38
dB(A)
46 / 43
47 / 44
48 / 44
dB
61
62
63
3D071661
48 / 45
63
3D071662
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
9.4 (332)
7.3 (258)
5.2 (184)
4.7 (166)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15 - 15 - 15
17 - 17 - 17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
dB(A)
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
Specifications
FVXS35FV1B
RXS35J2V1B
Piping Length
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
21
Specifications
SiBE06-708_C
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS50FV1B
RXS50J2V1B
Outdoor Unit
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
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current
Power Consumption
Power Factor
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Note:
kW
Btu/h
kcal/h
L/h
A
Cooling
5.0 (1.4 ~ 5.6)
17,100 (4,800 ~ 19,100)
4,300 (1,200 ~ 4,820)
2.9
7.2 - 6.8 - 6.6
Heating
5.8 (1.4 ~ 8.1)
19,800 (4,800 ~ 27,600)
4,990 (1,200 ~ 6,970)
W
1,550 (500 ~ 2,000)
1,600 (500 ~ 2,600)
%
W/W
mm
mm
mm
99.2 - 99.1 - 99.4
3.23
99.6 - 99.3 - 99.5
3.63
φ 6.4
φ 12.7
φ 20.0
Both Liquid and Gas Pipes
30
20
10
m
m
m
g/m
20
FVXS50FV1B
White
m³/min
(cfm)
10.7 (378)
9.2 (325)
7.8 (275)
6.6 (233)
A
W
%
11.8 (417)
10.1 (357)
8.5 (300)
7.1 (251)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
W
Steps
0.18 - 0.17 - 0.16
27 - 27 - 27
68.1 - 69.1 - 70.3
0.20 - 0.19 - 0.18
34 - 34 - 34
77.3 - 77.8 - 78.7
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
mm
mm
kg
kg
dB(A)
44 / 40 / 36 / 32
dB
56
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
45 / 40 / 36 / 32
57
RXS50J2V1B
Ivory White
Hermetically Sealed Swing Type
2YC36BXD
1,100
FVC50K
0.65
R-410A
1.7
W
50.9 (1,797)
48.9 (1,727)
45.0 (1,589)
43.1 (1,522)
Propeller
53
7.02 - 6.64 - 6.44
1,523 - 1,523 - 1,523
98.6 - 99.7 - 98.5
7.14 - 6.83 - 6.54
1,566 - 1,566 - 1,566
99.7 - 99.7 - 99.8
7.3
735 × 825 × 300
797 × 960 × 390
48
53
dB(A)
48 / 44
dB
62
48 / 45
62
3D071663
„ The data are based on the conditions shown in the table below.
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
22
—
7.3 - 7.0 - 6.7
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
Piping Length
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Specifications
SiBE06-708_C
Specifications
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS25FV1B
RXS25K2V1B
Outdoor Unit
Capacity Rated (Min. ~ Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min. ~ Max.)
Power Factor
COP (Rated) (Min. ~ Max.)
Liquid
Piping
Connections Gas
Drain
Heat Insulation
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current (Rated)
Power Consumption (Rated)
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current (Rated)
Power Consumption (Rated)
Power Factor (Rated)
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Note:
Cooling
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
Heating
3.4 (1.3 ~ 4.5)
11,600 (4,400 ~ 17,100)
2,920 (1,120 ~ 4,300)
—
4.5 - 4.3 - 4.1
W
570 (300 ~ 920)
%
W/W
mm
mm
mm
74.0 - 75.1 - 74.2
4.39 (4.33 ~ 3.26)
kW
Btu/h
kcal/h
L/h
A
m
m
m
g/m
m³/min
(cfm)
W
Steps
A
W
%
mm
mm
kg
kg
Cooling
2.5 (1.3 ~ 3.0)
8,500 (4,400 ~ 10,200)
2,150 (1,120 ~ 2,580)
1.2
3.5 - 3.3 - 3.2
Heating
3.4 (1.3 ~ 4.5)
11,600 (4,400 ~ 15,400)
2,920 (1,120 ~ 3,870)
—
4.5 - 4.3 - 4.1
790 (290 ~ 1,390)
570 (300 ~ 920)
790 (290 ~ 1,390)
79.8 - 79.9 - 80.3
4.30 (4.48 ~ 3.24)
74.0 - 75.1 - 74.2
4.39 (4.33 ~ 3.26)
79.8 - 79.9 - 80.3
4.30 (4.48 ~ 3.24)
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
20
20
FVXS25FV1B
White
FVXS25FV1B
White
8.2 (290)
6.5 (230)
4.8 (169)
4.1 (145)
8.8 (311)
6.9 (244)
5.0 (177)
4.4 (155)
8.2 (290)
6.5 (230)
4.8 (169)
4.1 (145)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15 - 15 - 15
17 - 17 - 17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 286
14
18
38 / 32 / 26 / 23
38 / 32 / 26 / 23
38 / 32 / 26 / 23
dB
54
54
52
W
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
38 / 32 / 26 / 23
52
RXS25K3V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.00
33.5 (1,183)
28.3 (999)
30.1 (1,063)
25.6 (904)
Propeller
23
3.36 - 3.17 - 3.08
4.35 - 4.16 - 3.97
555 - 555 - 555
773 - 773 - 773
75.1 - 76.1 - 75.1
80.8 - 80.8 - 81.1
4.5
550 × 765 × 285
612 × 906 × 364
34
38
RXS25K2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.00
33.5 (1,183)
28.3 (999)
30.1 (1,063)
25.6 (904)
Propeller
23
3.4 - 3.2 - 3.1
4.4 - 4.2 - 4.0
555 - 555 - 555
773 - 773 - 773
74.2 - 75.4- 74.6
80.3 - 80.0 - 80.5
4.5
550 × 765 × 285
612 × 906 × 364
34
38
dB(A)
46 / 43
47 / 44
46 / 43
dB
61
62
62
3D078587
47 / 44
63
3D080190
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
8.8 (311)
6.9 (244)
5.0 (177)
4.4 (155)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15 - 15 - 15
17 - 17 - 17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 280
14
18
dB(A)
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
Specifications
FVXS25FV1B
RXS25K3V1B
Piping Length
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
23
Specifications
SiBE06-708_C
50 Hz, 220 - 230 - 240 V
Indoor Unit
Model
FVXS35FV1B
RXS35K2V1B
Outdoor Unit
Capacity Rated (Min. ~ Max.)
Moisture Removal
Running Current (Rated)
Power Consumption
Rated (Min. ~ Max.)
Power Factor
COP (Rated) (Min. ~ Max.)
Liquid
Piping
Connections Gas
Drain
Heat Insulation
Max. Interunit Piping Length
Max. Interunit Height Difference
Chargeless
Amount of Additional Charge of
Refrigerant
Indoor Unit
Front Panel Color
H
M
Airflow Rate
L
SL
Type
Fan
Motor Output
Speed
Air Direction Control
Air Filter
Running Current
Power Consumption
Power Factor
Temperature Control
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / M / L / SL
Sound
Sound Power
Outdoor Unit
Casing Color
Type
Compressor Model
Motor Output
Type
Refrigerant
Oil
Charge
Type
Refrigerant
Charge
H
Airflow Rate
SL
Type
Fan
Motor Output
Running Current
Power Consumption
Power Factor
Starting Current
Dimensions (H × W × D)
Packaged Dimensions (H × W × D)
Weight
Gross Weight
Operation
H / SL
Sound
Sound Power H
Drawing No.
Note:
kW
Btu/h
kcal/h
L/h
A
Cooling
3.5 (1.4 ~ 3.8)
11,900 (4,800 ~ 13,000)
3,010 (1,200 ~ 3,270)
1.9
4.9 - 4.7 - 4.5
Heating
4.5 (1.4 ~ 5.0)
15,400 (4,800 ~ 17,100)
3,870 (1,200 ~ 4,300)
—
5.9 - 5.6 - 5.4
Cooling
5.0 (1.4 ~ 5.6)
17,100 (4,800 ~ 19,100)
4,300 (1,200 ~ 4,820)
2.9
7.2 - 6.8 - 6.6
Heating
5.8 (1.4 ~ 8.1)
19,800 (4,800 ~ 27,600)
4,990 (1,200 ~ 6,970)
W
1,020 (300 ~ 1,250)
1,220 (310 ~ 1,880)
1,550 (500 ~ 2,000)
1,600 (500 ~ 2,600)
%
W/W
mm
mm
mm
94.6 - 94.4 - 94.4
3.43 (4.67 ~ 3.04)
94.0 - 94.7 - 94.1
3.69 (4.52 ~ 2.66)
97.9 - 99.1 - 97.9
3.23 (2.80 ~ 2.80)
99.6 - 99.4 - 99.5
3.63 (2.80 ~ 3.12)
φ 6.4
φ 9.5
φ 20.0
Both Liquid and Gas Pipes
20
15
10
m
m
m
g/m
m³/min
(cfm)
W
Steps
A
W
%
mm
mm
kg
kg
φ 6.4
φ 12.7
φ 20.0
Both Liquid and Gas Pipes
30
20
10
20
20
FVXS50FV1B
White
9.4 (332)
7.3 (258)
5.2 (184)
4.7 (166)
10.7 (378)
9.2 (325)
7.8 (275)
6.6 (233)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.14 - 0.13 - 0.12
0.15 - 0.14 - 0.13
15 - 15 - 15
17 - 17 - 17
48.7 - 50.2 - 52.1
51.5 - 52.8 - 54.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 280
14
18
39 / 33 / 27 / 24
39 / 33 / 27 / 24
44 / 40 / 36 / 32
dB
52
52
60
L
kg
m³/min
(cfm)
W
A
W
%
A
mm
mm
kg
kg
RXS35K2V1B
Ivory White
Hermetically Sealed Swing Type
1YC23AEXD
600
FVC50K
0.375
R-410A
1.20
36.0 (1,271)
28.3 (999)
30.1 (1,063)
25.6 (904)
Propeller
23
4.76 - 4.57 - 4.38
5.75 - 5.46 - 5.27
1,005 - 1,005 - 1,005
1,203 - 1,203 - 1,203
96.0 - 95.6 - 95.6
95.1 - 95.8 - 95.1
5.9
550 × 765 × 285
612 × 906 × 364
34
38
45 / 40 / 36 / 32
61
RXS50K2V1B
Ivory White
Hermetically Sealed Swing Type
2YC36BXD
1,100
FVC50K
0.65
R-410A
1.70
50.9 (1,797)
45.0 (1,589)
48.9 (1,727)
43.1 (1,522)
Propeller
53
7.02 - 6.63 - 6.44
7.13 - 6.83 - 6.54
1,523 - 1,523 - 1,523
1,566 - 1,566 - 1,566
98.6 - 99.9 - 98.5
99.8 - 99.7 - 99.8
7.3
735 × 825 × 300
797 × 992 × 390
47
52
dB(A)
48 / 44
48 / 45
48 / 44
dB
63
63
63
3D080877
48 / 45
63
3D080878
„ The data are based on the conditions shown in the table below.
Heating
Indoor ; 20°CDB
Outdoor ; 7°CDB / 6°CWB
11.8 (417)
10.1 (357)
8.5 (300)
7.1 (251)
Turbo Fan
48
5 Steps, Quiet, Auto
Right, Left, Horizontal, Downward
Removable / Washable / Mildew Proof
0.18 - 0.17 - 0.16
0.17 - 0.17 - 0.16
27 - 27 - 27
34 - 34 - 34
68.2 - 69.1 - 70.3
90.9 - 87.0 - 88.5
Microcomputer Control
600 × 700 × 210
696 × 786 × 280
14
18
dB(A)
W
—
7.3 - 7.0 - 6.7
FVXS35FV1B
White
8.5 (300)
6.7 (237)
4.9 (173)
4.5 (159)
Cooling
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB
24
FVXS50FV1B
RXS50K2V1B
Piping Length
5m
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Specifications
SiBE06-708_C
Part 3
Printed Circuit Board
Connector Wiring Diagram
1. Indoor Unit.............................................................................................26
2. Outdoor Unit..........................................................................................28
2.1 RK(X)S25/35F2V1B ...............................................................................28
2.2 RK(X)S25/35G2V1B...............................................................................30
2.3 RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B,
RXS25K3V1B.........................................................................................32
2.4 RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B ..............................34
2.5 RXS50K2V1B.........................................................................................36
Printed Circuit Board Connector Wiring Diagram
25
Indoor Unit
SiBE06-708_C
1. Indoor Unit
Control PCB
1) S1
2) S21
3) S26
4) S32
5) S41
6) S42
7) S46
8) S48
9) H1, H2, H3
10) E1
11) V1, V2
12) JA
13) JB
JC
14) FU1 (F1U)
15) LED A
Connector for fan motor
Connector for centralized control (HA)
Connector for service PCB
Connector for indoor heat exchanger thermistor
Connector for lower air outlet motor
Connector for swing motor
Connector for display PCB
Connector for sensor PCB
Connector for terminal board
Connector for earth
Varistor
Address setting jumper
∗ Refer to page 146 for detail.
Fan speed setting when compressor stops for thermostat OFF
Power failure recovery function
∗ Refer to page 149 for detail.
Fuse (3.15A, 250V)
LED for service monitor (green)
E1
H1
JB
V2
JA
JC
V1
S32
H2
S48
FU1
S46
H3
S1
LED A S21
S41
S42
S26
2P191446-1
Caution
26
Replace the PCB if you accidentally cut the jumpers other than JA, JB, and JC.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Printed Circuit Board Connector Wiring Diagram
SiBE06-708_C
Indoor Unit
Sensor PCB
1) S49
2) RTH2 (R1T)
Connector for control PCB
Room temperature thermistor
RTH2
S49
3P191450-1
Service PCB
1) S27
2) SW2-4
3) SW4 (S4W)
Connector for control PCB
Switch for upward airflow limit setting
∗ Refer to page 149 for detail.
Switch for airflow selection
∗ Refer to page 41 for detail.
SW4
S27
SW2-4
3P191448-1
Display PCB
1)
2)
3)
4)
S47
SW1 (S1W)
LED1 (H1P)
LED2 (H2P)
Connector for control PCB
Forced operation ON/OFF button
LED for operation (green)
LED for timer (yellow)
LED1
LED2
SW1
S47
3P191447-1
LED3 does not function.
Printed Circuit Board Connector Wiring Diagram
27
Outdoor Unit
SiBE06-708_C
2. Outdoor Unit
2.1
RK(X)S25/35F2V1B
Main PCB
1)
2)
3)
4)
5)
6)
7)
S10
S20
S30
S40
S70
S80
S90
8) HC3, HC4
HL3, HN3
9) HR2
10) FU1, FU2
11) LED A
12) V1
13) J5
14) J8
15) SW1
Connector for filter PCB
Connector for electronic expansion valve coil
Connector for compressor
Connector for overload protector
Connector for fan motor
Connector for four way valve coil
Connector for thermistors
(outdoor temperature, outdoor heat exchanger, discharge pipe)
Connector for filter PCB
Connector for reactor
Fuse (3.15 A, 250 V)
LED for service monitor (green)
Varistor
Jumper for improvement of defrost performance
∗ Refer to page 149 for detail.
Jumper for facility setting
∗ Refer to page 146 for detail.
Forced cooling operation ON/OFF switch
∗ Refer to page 142 for detail.
S10
S40
LED A
S90
S30
S70
HC3
SW1
J5
HN3
J8
FU2
HR2
HC4
S20
Caution
28
S80
V1
FU1
HL3
2P143284-6
Replace the PCB if you accidentally cut the jumpers other than J5 and J8.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Printed Circuit Board Connector Wiring Diagram
SiBE06-708_C
Outdoor Unit
Filter PCB
1)
2)
3)
4)
S11
HL1, HN1, S
E
HC1, HC2
HL2, HN2
5) HR1
6) FU3
7) V2, V3
Connector for main PCB
Connector for terminal board
Terminal for earth
Connector for main PCB
Connector for reactor
Fuse (20 A, 250 V)
Varistor
HC2
HR1
E
HL1
HN1
S
HN2
S11
HC1
HL2
V3
V2 FU3
3P143310-1
Printed Circuit Board Connector Wiring Diagram
29
Outdoor Unit
2.2
SiBE06-708_C
RK(X)S25/35G2V1B
Main PCB
1)
2)
3)
4)
5)
6)
7)
8)
S10
S20
S30
S40
S50
S70
S80
S90
9) HL3, HN3
10) HR2
11) FU1, FU2
12) LED A
13) V1
14) J5
15) J8
16) SW1
Connector for filter PCB
Connector for electronic expansion valve coil
Connector for compressor
Connector for overload protector
Connector for magnetic relay
Connector for fan motor
Connector for four way valve coil
Connector for thermistors
(outdoor temperature, outdoor heat exchanger, discharge pipe)
Connector for filter PCB
Connector for reactor
Fuse (3.15 A, 250 V)
LED for service monitor (green)
Varistor
Jumper for improvement of defrost performance
∗ Refer to page 149 for detail.
Jumper for facility setting
∗ Refer to page 146 for detail.
Forced cooling operation ON/OFF switch
∗ Refer to page 142 for detail.
J5
S10
J8
S90
S40
S50
S30
LED A
SW1
S70
FU1
HN3
FU2
HR2
HL3
S80
V1
S20
2P203198-1
Caution
30
Replace the PCB if you accidentally cut the jumpers other than J5 and J8.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Printed Circuit Board Connector Wiring Diagram
SiBE06-708_C
Outdoor Unit
Filter PCB
1)
2)
3)
4)
5)
6)
7)
8)
S11
HL1, HN1, S
E1
E2
HL2, HN2
HR1
FU3
V2, V3
Connector for main PCB
Connector for terminal board
Terminal for earth
Connector for terminal board (earth)
Connector for main PCB
Connector for reactor
Fuse (20 A, 250 V)
Varistor
E1
E2
HR1
HL1 HN1 S
V3
V2
HN2
FU3
S11
HL2
S50
(on main PCB)
Printed Circuit Board Connector Wiring Diagram
3P203203-1
31
Outdoor Unit
2.3
SiBE06-708_C
RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B,
RXS25K3V1B
Main PCB
1)
2)
3)
4)
5)
6)
7)
S10
S20
S40
S50
S70
S80
S90
8) S100
9) HL3, HN3
10)HR2
11)U, V, W
12)FU2
13)LED A
14)V1
15)J4
16)J5
Connector for filter PCB
Connector for electronic expansion valve coil
Connector for overload protector
Connector for magnetic relay
Connector for fan motor
Connector for four way valve coil
Connector for thermistors
(outdoor temperature, outdoor heat exchanger, discharge pipe)
Connector for forced operation button PCB
Connector for filter PCB
Connector for reactor
Connector for compressor
Fuse (3.15 A, 250 V)
LED for service monitor (green)
Varistor
Jumper for facility setting
∗ Refer to page 146 for detail.
Jumper for improvement of defrost performance
∗ Refer to page 149 for detail.
U VW
S10
J5
J4 S90
LED A
S70
S40
HR2
S20
S80
HL3
V1
HN3
FU2
Caution
32
S100 S50
2P254206-1
2P254206-11
Replace the PCB if you accidentally cut the jumpers other than J4 and J5.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Printed Circuit Board Connector Wiring Diagram
SiBE06-708_C
Outdoor Unit
Filter PCB
1)
2)
3)
4)
5)
6)
7)
8)
S11
AC1, AC2, S
E1, E2
HL2, HN2
HR1
FU1
FU3
V2, V3
Connector for main PCB
Connector for terminal board
Terminal for earth wire
Connector for main PCB
Connector for reactor
Fuse (3.15 A, 250 V)
Fuse (20 A, 250 V)
Varistor
HR1
E1, E2
HN2
V2
AC2
AC1
V3
S11
FU3
S
FU1
HL2
S50
(on main PCB)
Forced Operation
Button PCB
1) S110
2) SW1
3P254234-1
Connector for main PCB
Forced cooling operation ON/OFF switch
∗ Refer to page 142 for detail.
SW1
S110
3P255755-1
Printed Circuit Board Connector Wiring Diagram
33
Outdoor Unit
2.4
SiBE06-708_C
RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B
Main PCB
1)
2)
3)
4)
5)
6)
7)
S10
S20
S40
S51, S101
S70
S80
S90
Connector for terminal board (indoor-outdoor transmission)
Connector for electronic expansion valve coil
Connector for overload protector
Connector for service monitor PCB
Connector for fan motor
Connector for four way valve coil
Connector for thermistors
(outdoor temperature, outdoor heat exchanger, discharge pipe)
Connector for terminal board (power supply)
Connector for earth
Connector for reactor
Connector for compressor
Fuse (30 A, 250 V)
Fuse (3.15 A, 250 V)
Varistor
8) AC1, AC2
9) E1, E2
10) HR1, HR2
11) U, V, W
12) FU1
13) FU2, FU3
14) V2, V3, V5 V6, V11
AC1
E1
E2
FU2
V3
V11
FU1
HR1
V2
V6
HR2
AC2
S10
S101
V5
S80
S90
34
S20 S40 S70 S51 FU3
W V
U
2P169046-1
2P169046-5
Printed Circuit Board Connector Wiring Diagram
SiBE06-708_C
Service Monitor
PCB
Outdoor Unit
1) S52, S102
2) LED A
3) SW1
4) SW4-B
SW4-C
Connector for main PCB
LED for service monitor (green)
Forced cooling operation ON/OFF switch
∗ Refer to page 142 for detail.
Switch for facility setting
∗ Refer to page 146 for detail
Switch for improvement of defrost performance
∗ Refer to page 149 for detail.
LED A
SW1
SW4-B SW4-C
S52
S102
3P169059-1
 SW4-A has no function. Keep it OFF.
Printed Circuit Board Connector Wiring Diagram
35
Outdoor Unit
2.5
SiBE06-708_C
RXS50K2V1B
Main PCB
1)
2)
3)
4)
5)
6)
7)
8)
S10
S12
S20
S40
S50
S70
S80
S90
Connector for [S11] on filter PCB
Connector for [HL4] [HN4] on filter PCB
Connector for electronic expansion valve coil
Connector for overload protector
Connector for magnetic relay
Connector for fan motor
Connector for four way valve coil
Connector for thermistors
(outdoor temperature, outdoor heat exchanger, discharge pipe)
Connector for [HL2] [HN2] on filter PCB
Terminal for compressor
Fuse (3.15 A, 250 V)
LED for service monitor (green)
Varistor
Jumper for facility setting
∗ Refer to page 146 for detail.
Jumper for improvement of defrost performance
∗ Refer to page 149 for detail.
9) HL3, HN3
10)U, V, W
11)FU2
12)LED A
13)V1
14)J6
15)J8
S80
S70
FU2
S20
S40
S90
S50
S10
S12
J6
LED A
V1
J8
U, V, W
HN3
Caution
36
HL3
2P273854-7
Replace the PCB if you accidentally cut the jumpers other than J6 and J8.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Printed Circuit Board Connector Wiring Diagram
SiBE06-708_C
Outdoor Unit
Filter PCB
1)
2)
3)
4)
5)
6)
7)
8)
9)
S11
HL1, HN1, S
E1, E2
HL2, HN2
HL4, HN4
FU1
FU3
V2, V3
SW1
Connector for [S10] on main PCB
Connector for terminal board
Terminal for earth wire
Connector for [HL3] [HN3] on main PCB
Connector for [S12] on main PCB
Fuse (3.15 A, 250 V)
Fuse (30 A, 250 V)
Varistor
Forced cooling operation ON/OFF switch
∗ Refer to page 142 for detail.
FU3 V2
V3
S
HL1
HN1
SW1
FU1
HN4, HL4
S50
(on main PCB)
HN2 HL2
E2, E1
S11
3P273862-4
Printed Circuit Board Connector Wiring Diagram
37
SiBE06-708_C
Part 4
Function and Control
1. Main Functions......................................................................................39
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
1.12
1.13
Temperature Control ..............................................................................39
Frequency Principle................................................................................39
Airflow Direction Control.........................................................................41
Fan Speed Control for Indoor Unit .........................................................43
Program Dry Operation ..........................................................................44
Automatic Operation...............................................................................45
Thermostat Control.................................................................................46
NIGHT SET Mode ..................................................................................47
ECONO Operation .................................................................................48
Inverter POWERFUL Operation .............................................................49
Clock Setting ..........................................................................................50
WEEKLY TIMER Operation ...................................................................51
Other Functions......................................................................................56
2. Function of Thermistor ..........................................................................57
3. Control Specification .............................................................................58
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
38
Mode Hierarchy ......................................................................................58
Frequency Control..................................................................................59
Controls at Mode Changing / Start-up....................................................61
Discharge Pipe Temperature Control.....................................................63
Input Current Control..............................................................................64
Freeze-up Protection Control .................................................................65
Heating Peak-cut Control .......................................................................65
Outdoor Fan Control...............................................................................66
Liquid Compression Protection Function................................................66
Defrost Control .......................................................................................67
Electronic Expansion Valve Control .......................................................68
Malfunctions ...........................................................................................71
Function and Control
SiBE06-708_C
Main Functions
1. Main Functions
1.1
Temperature Control
Definitions of
Temperatures
The definitions of temperatures are classified as following.
Š
Š
Š
Š
Room temperature: temperature of lower part of the room
Set temperature: temperature set by remote controller
Room thermistor temperature: temperature detected by room temperature thermistor
Target temperature: temperature determined by microcomputer
Target temperature
Room thermistor temperature
Set temperature
Room temperature
(R12321)
The illustration is for wall mounted type as representative.
Temperature
Control
1.2
The temperature of the room is detected by the room temperature thermistor. However, there is
a difference between the “temperature detected by room temperature thermistor” and the
“temperature of lower part of the room”, depending on the type of the indoor unit or installation
condition. Practically, the temperature control is done by the “target temperature appropriately
adjusted for the indoor unit” and the “temperature detected by room temperature thermistor”.
Frequency Principle
Main Control
Parameters
Additional
Control
Parameters
Inverter Principle
Function and Control
The frequency of the compressor is controlled by the following 2 parameters:
„ The load condition of the operating indoor unit
„ The difference between the room thermistor temperature and the target temperature
The target frequency is adapted by additional parameters in the following cases:
„ Frequency restrictions
„ Initial settings
„ Forced cooling operation
To regulate the capacity, a frequency control is needed. The inverter makes it possible to alter
the rotation speed of the compressor. The following table explains the conversion principle:
Phase
Description
1
2
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.
39
Main Functions
Drawing of
Inverter
SiBE06-708_C
The following drawing shows a schematic view of the inverter principle:
Refrigerant circulation rate (high)
AC
power
Amount of heat
exchanged air (small)
DC
power
high speed
Amount of heat
exchanged air (large)
high f
low f
low speed
50 Hz
freq=
constant 60 Hz freq=variable
Amount of heat
exchanged air (large)
Amount of heat
exchanged air (small)
capacity=
variable
Refrigerant circulation rate (low)
Inverter Features
(R2812)
The inverter provides the following features:
„ The regulating capacity can be changed according to the changes in the outdoor
„
„
„
„
Frequency Limits
temperature and cooling / heating load.
Quick heating and quick cooling
The rotation speed of the compressor is increased when starting the heating (or cooling).
This enables to reach the set temperature quickly.
Even during extreme cold weather, high capacity is achieved. It is maintained even when the
outdoor temperature is 2°C.
Comfortable air conditioning
A fine adjustment is integrated to keep the room temperature constant.
Energy saving heating and cooling
Once the set temperature is reached, the energy saving operation enables to maintain the
room temperature at low power.
The following functions regulate the minimum and maximum frequency:
Frequency
Low
High
Forced Cooling
Operation
40
Functions
„ Four way valve operation compensation. Refer to page 62.
„
„
„
„
„
„
Compressor protection function. Refer to page 62.
Discharge pipe temperature control. Refer to page 63.
Input current control. Refer to page 64.
Freeze-up protection control. Refer to page 65.
Heating peak-cut control. Refer to page 65.
Defrost control. Refer to page 67.
Refer to page 142 for detail.
Function and Control
SiBE06-708_C
1.3
Main Functions
Airflow Direction Control
Wide-Angle
Louvers
The louvers, made of elastic synthetic resin, provide a wide range of airflow that guarantees a
comfortable air distribution.
Right and Left
(manual)
Upper air outlet
45°
45°
(R6827)
Lower air outlet
45°
45°
(R6828)
Auto-Swing
The following table explains the auto-swing process for cooling, dry, and heating :
25°
°
90
°
90
Upward airflow limit
OFF
40
°
Up and Down
Cooling / Dry
Heating
2 0°
(R6829)
°
90
°
90
Upward airflow limit
ON
2 0°
(R6831)
(R6832)
Airflow Selection
Setting
(R6830)
Airflow direction can be set with the airflow selection switch.
„ Open the front panel.
Front panel
„
Air is blown from the upper outlet only.
„
The blow pattern is automatically decided
depending on mode and conditions.
(Recommended and factory set.)
CAUTION
Before opening the front panel, be sure to stop the operation and turn the breaker off.
Do not touch the aluminum fins (indoor heat exchanger) inside of the indoor unit, as it
may result in injury.
(R17866)
Function and Control
41
Main Functions
SiBE06-708_C
When setting the airflow selection switch to
.
„ The air conditioner automatically decides the appropriate blowing pattern depending on the
operating mode / situation.
Operating mode
Cooling operation
Situation
Blowing pattern
• When the room has become fully • Air is blown from the upper air
cool, or when 1 hour has passed
outlet, so that air does not come
into direct contact with people,
since turning on the air
and room temperature is
conditioner.
equalized.
• At the start of operation or when
the room is not fully cooled.
• Normal time
(R17867)
Heating operation
• Air is blown from the upper and
lower air outlets for high speed
cooling during cooling operation,
and for filling the room with warm
air during heating operation.
• At the start or when air
temperature is low.
• Air is blown from the upper air
outlet, so that air does not come
into direct contact with people.
• During Dry operation, air is blown upper air outlet, so that cold air does not come into direct
contact with people.
When setting the airflow selection switch to
.
„ Regardless of the operating mode or situation, air is blown from the upper air outlet.
„ Use this switch when you do not want air coming out of the lower air outlet. (e.g., while
sleeping)
42
Function and Control
SiBE06-708_C
1.4
Main Functions
Fan Speed Control for Indoor Unit
Outline
Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH.
The airflow rate can be automatically controlled depending on the difference between the room
thermistor temperature and the target temperature. This is done through phase control and Hall
IC control.
For more information about Hall IC, refer to the troubleshooting for fan motor on page 85.
Automatic Fan
Speed Control
In automatic fan speed operation, the step “SL” is not available.
Step
Cooling
Heating
LLL
LL
L
ML
M
MH
H
HH (POWERFUL)
(R6834)
(R6833)
= The airflow rate is automatically controlled within this range when the [FAN] setting
button is set to automatic.
<Cooling>
The following drawing explains the principle of fan speed control for cooling.
Room thermistor temperature – target temperature
Fan speed
MH
+2.5°C
M
+1.5°C
ML
+0.5°C
L
+3°C
+2°C
+1°C
(R14182)
<Heating>
In heating operation, the fan speed is regulated according to the indoor heat exchanger
temperature and the difference between the room thermistor temperature and the target
temperature.
Note:
Function and Control
1. During POWERFUL operation, the fan rotates at H tap + 40 rpm.
2. The fan stops during defrost control.
43
Main Functions
1.5
SiBE06-708_C
Program Dry Operation
Outline
Program dry operation removes humidity while preventing the room temperature from lowering.
Since the microcomputer controls both the temperature and airflow rate, the temperature
adjustment and [FAN] setting buttons are inoperable.
Detail
The microcomputer automatically sets the temperature and airflow rate. The difference between
the room thermistor temperature at start-up and the target temperature is divided into two
zones. Then, the unit operates in an appropriate capacity for each zone to maintain the
temperature and humidity at a comfortable level.
Room thermistor
temperature at start-up
Target temperature
X
Thermostat OFF point
Y
Thermostat ON point
Z
X – 2.5ºC
X – 0.5ºC
or
Y + 0.5ºC (zone B)
continues for 10 min.
X – 2.0ºC
X – 0.5ºC
or
Y + 0.5ºC (zone B)
continues for 10 min.
X – 2.0ºC
X – 0.5ºC = 17.5ºC
or
Y + 0.5ºC (zone B)
continues for 10 min.
24ºC or more
Room thermistor
temperature at start-up
23.5ºC
~
18ºC
17.5ºC
18ºC
~
X
Zone C = Thermostat ON
Zone B
Z
Zone B
Y
+0.5ºC
Zone A = Thermostat OFF
(R11581)
44
Function and Control
SiBE06-708_C
1.6
Main Functions
Automatic Operation
Outline
Detail
Automatic Cooling / Heating Function
When the automatic operation is selected with the remote controller, the microcomputer
automatically determines the operation mode as cooling or heating according to the room
temperature and the set temperature at start-up.
The unit automatically switches the operation mode to maintain the room temperature at the set
temperature.
Ts: set temperature (set by remote controller)
Tt: target temperature (determined by microcomputer)
Tr: room thermistor temperature (detected by room temperature thermistor)
C: correction value
1. The set temperature (Ts) determines the target temperature (Tt).
(Ts = 18 ~ 30°C).
2. The target temperature (Tt) is calculated as;
Tt = Ts + C
where C is the correction value.
C = 0°C
3. Thermostat ON/OFF point and operation mode switching point are as follows.
Tr means the room thermistor temperature.
(1) Heating → Cooling switching point:
Tr ≥ Tt + 2.5°C
(2) Cooling → Heating switching point:
Tr < Tt – 2.5°C
(3) Thermostat ON/OFF point is the same as the ON/OFF point of cooling or heating
operation.
4. During initial operation
Tr ≥ Ts : Cooling operation
Tr < Ts : Heating operation
Cooling Operation
Target temperature + 2.5˚C
Target temperature – 2.0˚C
= Thermostat OFF
Target temperature + 1.5˚C
= Thermostat OFF
Target temperature – 2.5˚C
Heating Operation
(R11893)
Ex: When the target temperature is 25°C
Cooling → 23°C: Thermostat OFF → 22°C: Switch to heating
Heating → 26.5°C: Thermostat OFF → 27.5°C: Switch to cooling
Function and Control
45
Main Functions
1.7
SiBE06-708_C
Thermostat Control
Outline
Thermostat control is based on the difference between the room thermistor temperature and the
target temperature.
Detail
Thermostat OFF Condition
Š The temperature difference is in the zone A.
Thermostat ON Condition
Š The temperature difference returns to 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 thermistor temperature – target temperature
Cooling: –0.5°C
Dry: –0.5°C
C
–1.5°C
B
Cooling: –2.0°C
Dry: –2.5 ~ –2.0°C
A
OFF
(R12319)
<Heating>
Room thermistor temperature – target temperature
OFF
A
1.5°C
B
1.0°C
C
0°C
ON
(R12320)
Refer to “Temperature Control” on page 39 for detail.
46
Function and Control
SiBE06-708_C
1.8
Main Functions
NIGHT SET Mode
Outline
When the OFF TIMER is set, the NIGHT SET Mode is automatically activated. The NIGHT SET
Mode keeps the airflow rate setting.
Detail
The NIGHT SET Mode continues operation at the target temperature for the first one hour, then
automatically raises the target temperature slightly in the case of cooling, or lowers it slightly in
the case of heating. This prevents excessive cooling in summer and excessive heating in winter
to ensure comfortable sleeping conditions, and also conserves electricity.
<Cooling>
0.5˚C
Target temperature
Operation stops
at the set hours
30 minutes
TIMER operation
NIGHT SET Mode ON
+0.5˚C
temperature shift
(R18034)
<Heating>
Target temperature
2˚C
TIMER operation
NIGHT SET Mode ON
Function and Control
1 hour later
(R11813)
47
Main Functions
1.9
SiBE06-708_C
ECONO Operation
Outline
ECONO operation reduces the maximum operating current and the power consumption.
This operation 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.
Detail
„ When this function is activated, the maximum capacity also decreases.
„ The remote controller can send the ECONO command when the unit is in cooling, heating,
dry, or automatic operation. This function can only be set when the unit is running. Pressing
the [ON/OFF] button on the remote controller cancels the function.
„ This function and POWERFUL operation cannot be used at the same time. The latest
command has the priority.
Power
consumption
and current
Maximum during normal operation
Normal
Maximum during ECONO operation
ECONO Operation
Time
(R9288)
48
Function and Control
SiBE06-708_C
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.
Detail
When the [POWERFUL] button is pressed, the fan speed and target temperature are converted
to the following states for 20 minutes.
Operation mode
Fan speed
Target temperature
COOL
DRY
H tap + A rpm
Dry rotating speed + A rpm
18°C
Lowered by 2.5°C
HEAT
FAN
H tap + A rpm
H tap + A rpm
32°C
—
AUTO
Same as cooling / heating in
POWERFUL operation
The target temperature is
kept unchanged.
A = 40 rpm
Ex: POWERFUL operation in cooling
Target temp.
It should be the lower limit of
cooling temperature.
18˚C
It counts 20 minutes. also
in the remote controller.
POWERFUL
ON
POWERFUL
OFF
Fan
A rpm
H tap
20 minutes
Ending condition: "or" in 1 to 3
1. After the lapse of 20 minutes.
2. Operation OFF
3. POWERFUL operation is OFF.
Set tap
(R13571)
Function and Control
49
Main Functions
SiBE06-708_C
1.11 Clock Setting
ARC452 Series
The clock can be set by taking the following steps:
1. Press the [CLOCK] button.
→
is displayed and MON and
blink.
2. Press the [SELECT] or button to set the clock to the current day of the week.
3. Press the [CLOCK] button.
→
blinks.
4. Press the [SELECT] or button to set the clock to the present time.
Holding down the [SELECT] or button increases or decreases the time display rapidly.
5. Press the [CLOCK] button. (Point the remote controller at the indoor unit when pressing the
button.)
→
blinks and clock setting is completed.
SELECT button
CLOCK button
(R18281)
50
Function and Control
SiBE06-708_C
Main Functions
1.12 WEEKLY TIMER Operation
Outline
Up to 4 timer settings can be saved for each day of the week (up to 28 settings in total).
The 3 items: “ON/OFF”, “temperature”, and “time” can be set.
Detail
„ Using in these cases of WEEKLY TIMER
An example of WEEKLY TIMER settings is shown below.
Example: The same timer settings are made for the week from Monday through
Friday while different timer settings are made for the weekend.
[Monday] Make timer settings up to programs 1-4.
Program 1
Program 2
Program 3
Program 4
ON
OFF
ON
OFF
8:30
17:30
25°C
27°C
6:00
OFF
25°C
22:00
OFF
27°C
ON
ON
25°C
27°C
[Tuesday] Use the copy mode to make settings for Tuesday to Friday, because
to
these settings are the same as those for Monday.
Program 2
Program 3
Program 4
[Friday] Program 1
ON
OFF
ON
OFF
25°C
27°C
6:00
8:30
17:30
22:00
[Saturday] No timer settings
[Sunday] Make timer settings up to programs 1-4.
Program 1
Program 2
Program 3
Program 4
ON
OFF
OFF
ON
25°C
8:00
10:00
OFF
25°C
ON
25°C
27°C
27°C
19:00
OFF
21:00
27°C
ON
27°C
• Up to 4 reservations per day and 28 reservations per week can be set in the WEEKLY TIMER.
The effective use of the copy mode ensures ease of making reservations.
• The use of ON-ON-ON-ON settings, for example, makes it possible to schedule operating mode
and set temperature changes. Furthermore, by using OFF-OFF-OFF-OFF settings, only the turnOFF time of each day can be set. This will turn OFF the air conditioner automatically if the user
forgets to turn it OFF.
Function and Control
51
Main Functions
SiBE06-708_C
„ To use WEEKLY TIMER operation
Setting mode
• Make sure the day of the week and time are set.
If not, set the day of the week and time.
Program 1
Program 2 Program 3
ON
[Monday]
OFF
OFF
25°C
6:00
Program 4
ON
27°C
8:30
1. Press “
17:30
22:00
button”.
• The day of the week and the reservation
number of the current day will be displayed.
• 1 to 4 settings can be made per day.
2. Press the “SELECT button” to select the desired
day of the week and reservation number.
• Pressing the “SELECT button” changes the
reservation number and the day of the week.
3. Press “NEXT button”.
1
• The day of the week and reservation number will be set.
• “
” and “
” blink.
4. Press “SELECT button” to select the desired mode.
3, 5, 7
• Pressing the “SELECT button” changes
“
” or “
” setting in sequence.
ON
ON TIMER
OFF
OFF TIMER
2, 4, 6
Blank
blank
• In case the reservation has already been set, selecting “blank” deletes the reservation.
• Go to STEP 9 if “blank” is selected.
5. Press “NEXT button”.
• The ON/OFF TIMER mode will be set.
” and the time blink.
• “
6. Press “SELECT button” to select the desired time.
• The time can be set between 0:00 and 23:50 in 10 minute intervals.
• To return to the ON/OFF TIMER mode setting, press “BACK button”.
• Go to STEP 9 when setting the OFF TIMER.
7. Press “NEXT button”.
• The time will be set.
” and the temperature blink.
• “
Setting Displays
Day and number settings
52
ON/OFF settings
Time settings
Temperature settings
Function and Control
SiBE06-708_C
Main Functions
8. Press “SELECT button” to
select the desired temperature.
• The temperature can be set between
10°C and 32°C.
Cooling: The unit operates at 18°C
even if it is set at 10 to 17°C.
Heating: The unit operates at 30°C
even if it is set at 31 to 32°C.
• To return to the time setting, press
“BACK button”.
• The set temperature is only displayed
when the mode setting is on.
9. Press “NEXT button”.
• The temperature will be set and go
to the next reservation setting.
• To continue further settings, repeat
the procedure from STEP 4.
10. Press “
button” to
complete the setting.
• Be sure to direct the remote controller
toward the indoor unit and check for a
receiving tone and flashing the
operation lamp.
• “
” is displayed on the LCD and
WEEKLY TIMER operation is activated.
• The TIMER lamp lights up.
• A reservation made once can be easily
copied and the same settings used for another day of the week.
Refer to Copy mode .
10
9
8
NOTE
„ Notes on WEEKLY TIMER operation
• Do not forget to set the clock on the remote control first.
• The day of the week, ON/OFF TIMER mode, time and set temperature (only for ON TIMER
mode) can be set with WEEKLY TIMER. Other settings for ON TIMER are based on the
settings just before the operation.
• Both WEEKLY TIMER and ON/OFF TIMER operation cannot be used at the same time.
The ON/OFF TIMER operation has priority if it is set while WEEKLY TIMER is still active.
The WEEKLY TIMER will go into standby state, and “
” will disappear from the LCD.
When ON/OFF TIMER is up, the WEEKLY TIMER will automatically become active.
button”.
• Only the time and set temperature set with the weekly timer are sent with the “
Set the weekly timer only after setting the operation mode, the fan strength, and the fan
direction ahead of time.
• Shutting the breaker off, power failure, and other similar events will render operation of the
indoor unit’s internal clock inaccurate. Reset the clock.
• The “BACK button” can be used only for the time and temperature settings.
It cannot be used to go back to the reservation number.
Function and Control
53
Main Functions
SiBE06-708_C
WEEKLY TIMER Operation
Copy mode
• A reservation made once can be copied
another day of the week. The whole reservation
of the selected day of the week will be copied.
Program 1
Program 2 Program 3
ON
[Monday]
OFF
ON
8:30
17:30
25°C
6:00
Program 4
OFF
27°C
22:00
COPY
Program 4
Program 1 Program 2 Program 3
OFF
ON
OFF
[Tuesday] ON
25°C
27°C
to
[Friday]
6:00
8:30
17:30
22:00
1. Press “
button”.
2. Press “SELECT button” to confirm the
day of the week to be copied.
3. Press “COPY button” to
activate copy mode.
1, 6
3, 5
• The whole reservation of the selected
day of the week will be copied.
4. Press “SELECT button” to select
the destination day of the week.
5. Press “COPY button”.
2, 4
• The reservation will be copied to the
selected day of the week. The whole reservation of the selected day of the week will be copied.
• To continue copying the settings to other days of the week, repeat STEP 4 and STEP 5.
6. Press “
• “
button” to complete the setting.
” is displayed on the LCD and WEEKLY TIMER operation is activated.
Setting Displays
Confirmation display
Copy display
Paste display
Normal display
NOTE
„ COPY MODE
• The entire reservation of the source day of the week is copied in the copy mode.
In the case of making a reservation change for any day of the week individually after
copying the content of weekly reservations, press “
button” and change the settings
in the steps of Setting mode .
54
Function and Control
SiBE06-708_C
Main Functions
„ Confirming a reservation
• The reservation can be confirmed.
1. Press “
button”.
• The day of the week and the reservation number of
the current day will be displayed.
2. Press “SELECT button” to select the
day of the week and the reservation
number to be confirmed.
• Pressing the “SELECT button” displays the
reservation details.
• To change the confirmed reserved settings, select the
reservation number and press “NEXT button”.
The mode is switched to setting mode. Go to
Setting mode STEP 4.
3. Press “
button” to exit
confirming mode.
• “
” is displayed on the LCD and WEEKLY
TIMER operation is activated.
• The TIMER lamp lights up.
Setting Displays
1, 3, 5
Normal display
Confirmation display
4, 7, 8
„ To deactivate WEEKLY
TIMER operation
4. Press “WEEKLY button” while
“
•
•
•
•
2, 6
” is displayed on the LCD.
The “
” will disappear from the LCD.
The TIMER lamp goes off.
To reactivate the WEEKLY TIMER operation, press the “WEEKLY button” again.
If a reservation deactivated with “WEEKLY button” is activated once again, the last reservation mode will be used.
„ To delete reservations
The individual reservation
• Refer to Setting mode .
When selecting desired mode at STEP 4 in setting mode, select “blank”. The reservation will be deleted.
The reservations for each day of the week
• This function can be used for deleting reservations for each day of the week.
5. Press “
button”.
6. Select the day of the week to be canceled with the “SELECT button”.
7. Hold the “WEEKLY button” for 5 seconds.
• The reservation of the selected day of the week will be deleted.
All reservations
8. Hold “WEEKLY button” for 5 seconds while normal display.
• Be sure to direct the remote control toward the main unit and check for a receiving tone.
• This operation is not effective while WEEKLY TIMER is being set.
• All reservations will be deleted.
Function and Control
55
Main Functions
SiBE06-708_C
1.13 Other Functions
1.13.1 Hot-Start Function
In order to prevent the cold air blast that normally comes when heating operation is started, the
temperature of the indoor heat exchanger is detected, and the airflow is either stopped or made
very weak thereby carrying out comfortable heating of the room.
*The cold air blast is also prevented using similar control when the defrost control starts or when
the thermostat is turned ON.
1.13.2 Signal Receiving Sign
When the indoor unit receives a signal from the remote controller, the unit emits a signal
receiving sound.
1.13.3 Indoor Unit [ON/OFF] Button
An [ON/OFF] button is provided on the display of the unit.
„ Press the [ON/OFF] button once to start operation. Press once again to stop it.
„ The [ON/OFF] button is useful when the remote controller is missing or the battery has run
out.
„ The operation mode refers to the following table.
Cooling Only
Operation mode
COOL
Temperature setting
22ºC
Airflow rate
Automatic
Heat Pump
AUTO
25ºC
Automatic
ON / OFF button
(R6839)
<Forced cooling operation>
Forced cooling operation can be started by pressing the [ON/OFF] button for 5 to 9 seconds
while the unit is not operating.
Refer to page 142 for detail.
Note:
When the [ON/OFF] button is pressed for 10 seconds or more, the forced cooling operation is
stopped.
1.13.4 Titanium Apatite Photocatalytic Air-Purifying Filter
This filter combines the Air-Purifying Filter and Titanium Apatite Photocatalytic Deodorizing
Filter as a single highly effective filter. The filter traps microscopic particles, decompose odors
and even deactivates bacteria and viruses. It lasts for 3 years without replacement if washed
about once every 6 months.
1.13.5 Auto-restart Function
If a power failure (including one for just a moment) occurs during the operation, the operation
restarts automatically when the power is restored in the same condition as before the power
failure.
Note:
56
It takes 3 minutes to restart the operation because the 3-minute standby function is activated.
Function and Control
SiBE06-708_C
Function of Thermistor
2. Function of Thermistor
Electronic
expansion valve
(1)
(3)
Four way valve
(2)
Compressor
(R14247)
(1) Outdoor Heat
Exchanger
Thermistor
1. The outdoor heat exchanger thermistor is used for controlling the target discharge pipe
temperature. The system sets the target discharge pipe temperature according to the
outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve
opening so that the target discharge pipe temperature can be obtained.
2. In cooling operation, the outdoor heat exchanger thermistor is used for detecting the
disconnection of the discharge pipe thermistor. When the discharge pipe temperature drops
below the outdoor heat exchanger temperature by more than a certain value, the discharge
pipe thermistor is judged as disconnected.
3. In cooling operation, the outdoor heat exchanger thermistor is used for high pressure
protection.
(2) Discharge
Pipe Thermistor
1. The discharge pipe thermistor is used for controlling discharge pipe temperature. If the
discharge pipe temperature (used in place of the inner temperature of the compressor) rises
abnormally, the operating frequency becomes lower or the operation halts.
2. The discharge pipe thermistor is used for detecting disconnection of the discharge pipe
thermistor.
(3) Indoor Heat
Exchanger
Thermistor
1. The indoor heat exchanger thermistor is used for controlling the target discharge pipe
temperature. The system sets the target discharge pipe temperature according to the
outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve
opening so that the target discharge pipe temperature can be obtained.
2. In cooling operation, the indoor heat exchanger thermistor is used for freeze-up protection
control. If the indoor heat exchanger temperature drops abnormally, the operating frequency
becomes lower or the operation halts.
3. In heating operation, the indoor heat exchanger thermistor is used for detecting the
disconnection of the discharge pipe thermistor. When the discharge pipe temperature drops
below the indoor heat exchanger temperature by more than a certain value, the discharge
pipe thermistor is judged as disconnected.
Function and Control
57
Control Specification
SiBE06-708_C
3. Control Specification
3.1
Mode Hierarchy
Outline
Air conditioner control has normal operation mode, forced operation mode, and power transistor
test mode for installation and servicing.
Detail
Cooling Only Model
Air conditioner control mode
Forced operation mode
Forced cooling operation (for pump down operation)
Power transistor test mode
Normal operation mode
Fan
Cooling (includes drying)
Stop (indoor unit: OFF)
Preheating operation
Discharging from capacitor
Stop
(R17487)
Heat Pump Model
Air conditioner control mode
Forced operation mode
Forced cooling operation (for pump down operation)
Power transistor test mode
Normal operation mode
Fan
Cooling (includes drying)
Heating
Heating
Defrosting
Stop (indoor unit: OFF)
Preheating operation
Discharging from capacitor
Stop
(R17533)
Note:
58
Unless specified otherwise, a dry operation command is regarded as cooling operation.
Function and Control
SiBE06-708_C
3.2
Control Specification
Frequency Control
Outline
Frequency is determined according to the difference between the room thermistor temperature
and the target temperature.
The function is explained as follows.
1. How to determine frequency
2. Frequency command from the indoor unit (Difference between the room thermistor
temperature and the target temperature)
3. Frequency initial setting
4. PI control
When the shift of the frequency is less than zero (∆F<0) by PI control,
the target frequency is used as the command frequency.
Dropping function
Input current control, etc.
Upper limit frequency
FMAX
Command frequency
Limit frequency
Initial frequency
PI control
Defrost control (∗)
Lower limit frequency
FMIN
Upper limit function
Compressor protection function
Skip control
Target frequency
Lower limit function
Four way valve operation compensation (∗), etc.
(∗): only for heat pump models
(R17857)
Detail
How to Determine Frequency
The compressor’s frequency is determined by taking the following steps.
For Cooling Only Model
1. Determine command frequency
Š Command frequency is determined in the following order of priority.
1.Forced cooling
2.Indoor frequency command
2. Determine upper limit frequency
Š The minimum value is set as an upper limit frequency among the frequency upper limits of
the following functions:
Compressor protection, input current, discharge pipe temperature, freeze-up protection.
3. Determine lower limit frequency
Š The maximum value is set as a lower limit frequency among the frequency lower limits of the
following function:
Pressure difference upkeep.
4. Determine prohibited frequency
Š There is a certain prohibited frequency such as a power supply frequency.
For Heat Pump Model
1. Determine command frequency
Š Command frequency is determined in the following order of priority.
1.Limiting defrost control time
2.Forced cooling
3.Indoor frequency command
Function and Control
59
Control Specification
SiBE06-708_C
2. Determine upper limit frequency
Š The minimum value is set as an upper limit frequency among the frequency upper limits of
the following functions:
Compressor protection, input current, discharge pipe temperature, heating peak-cut, freezeup protection, defrost.
3. Determine lower limit frequency
Š The maximum value is set as a lower limit frequency among the frequency lower limits of the
following functions:
Four way valve operation compensation, draft prevention, 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 the room thermistor temperature and the target temperature is taken as
the “∆D signal” and is used for frequency command.
Temperature
difference
∆D
signal
Temperature
difference
∆D
signal
Temperature
difference
∆D
signal
Temperature
difference
∆D
signal
–2.0
0
4
2.0
8
4.0
C
–1.5
∗Th
OFF
1
0.5
5
2.5
9
4.5
D
–1.0
–0.5
2
3
1.0
1.5
6
7
3.0
3.5
A
B
5.0
5.5
E
F
∗Th OFF = Thermostat OFF
Frequency Initial Setting
<Outline>
When starting the compressor, the frequency is initialized according to the ∆D value and the Q
value of the indoor unit.
Q value: Indoor unit output determined from indoor unit volume, airflow rate and other factors.
PI Control (Determine Frequency Up / Down by ∆D Signal)
1. P control
The ∆D value is calculated in each sampling time (15 ~ 20 seconds), and the frequency is
adjusted according to its difference from the frequency previously calculated.
2. I control
If the operating frequency does not change for more than a certain fixed time, the frequency
is adjusted according to the ∆D value.
When the ∆D value is low, the frequency is lowered.
When the ∆D value is high, the frequency is increased.
3. Frequency management when other controls are functioning
Š When frequency is dropping;
Frequency management is carried out only when the frequency drops.
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 according to the command of the indoor unit.
When the indoor or outdoor unit quiet operation command comes from the indoor unit, the
upper limit frequency is lower than the usual setting.
60
Function and Control
SiBE06-708_C
3.3
Control Specification
Controls at Mode Changing / Start-up
3.3.1 Preheating Control
Outline
The inverter operation in open phase starts with the conditions of the preheating command from
the indoor unit, the outdoor temperature, and the discharge pipe temperature.
Detail
„ RK(X)S25/35F2V1B, RK(X)S25/35G2V1B
ON Condition
Š When the discharge pipe temperature is below 10°C, the inverter operation in open phase
starts.
OFF Condition
Š When the discharge pipe temperature is higher than 12°C, the inverter operation in open
phase stops.
„ RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B
RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B, RXS50K2V1B
Outdoor temperature ≥ A°C → Control I
Outdoor temperature < A°C → Control II
Control I
Š ON condition
Discharge pipe temperature < B°C
Š OFF condition
Discharge pipe temperature > C°C
Radiation fin temperature ≥ 90°C
Control II
Š ON condition
Discharge pipe temperature < D°C
Š OFF condition
Discharge pipe temperature > E°C
Radiation fin temperature ≥ 90°C
RK(X)S25/35G2V1B9
RXS25/35J2V1B
RXS25K2V1B
RK(X)S50F2V1B
RK(X)S50G2V1B
RXS50J2V1B
RXS25K3V1B
RXS35/50K2V1B
A (°C)
B (°C)
C (°C)
D (°C)
E (°C)
7
10
12
20
22
10
6
8
10.5
12
–2.5
0
2
10
12
3.3.2 Four Way Valve Switching
Outline
In heating operation, current is conducted, and in cooling operation and defrost control, current
is not 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 OFF delay switch of the four way valve is
carried out.
Detail
OFF delay switch of four way valve:
The four way valve coil is energized for 150 ~ 160 seconds after the operation is stopped.
Function and Control
61
Control Specification
SiBE06-708_C
3.3.3 Four Way Valve Operation Compensation
Outline
At the beginning of the operation as the four way valve is switched, the pressure difference to
activate the four way valve is acquired by having output frequency which is more than a certain
fixed frequency, for a certain fixed time.
Detail
Starting Conditions
1. When the compressor starts and the four way valve switches from OFF to ON
2. When the four way valve switches from ON to OFF during operation
3. When the compressor starts after resetting
4. When the compressor starts after the fault of four way valve switching
The lower limit of frequency keeps A Hz for B seconds with any conditions 1 through 4 above.
25/35 class
Cooling
68
A (Hz)
B (seconds)
50 class
Heating
66
Cooling
Heating
48
45
70
3.3.4 3-minute Standby
Turning on the compressor is prohibited for 3 minutes after turning it off.
(Except when defrosting.)
3.3.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.
(The function is not activated when defrosting.)
(Hz)
Frequency
C
B
A
D
E
F
(sec.)
Time
(R13528)
62
A (Hz)
25/35 class
48
50 class
55
B (Hz)
C (Hz)
64
88
70
85
D (seconds)
E (seconds)
240
360
120
200
F (seconds)
180
470
Function and Control
SiBE06-708_C
3.4
Control Specification
Discharge Pipe Temperature Control
Outline
The discharge pipe temperature is used as the internal temperature of the compressor. If the
discharge pipe temperature rises above a certain level, the upper limit of frequency is set to
keep the discharge pipe temperature from rising further.
Detail
Stop zone
A˚C
B˚C
Dropping zone
C˚C
Keep zone
D˚C
Discharge pipe
temperature
Zone
E˚C
(R14642)
Control
Stop zone
Dropping zone
Function and Control
Up zone
Reset zone
When the temperature reaches the stop zone, the compressor stops.
The upper limit of frequency decreases.
Keep zone
Up zone
The upper limit of frequency is kept.
The upper limit of frequency increases.
Reset zone
The upper limit of frequency is canceled.
25/35 class
50 class
A (°C)
B (°C)
110
105
110
103
C (°C)
D (°C)
101
99
101.5
100
E (°C)
97
95
63
Control Specification
3.5
Outline
SiBE06-708_C
Input Current Control
The microcomputer calculates the input current while the compressor is running, and sets the
frequency upper limit from the input current.
In case of heat pump models, this control which is the upper limit control of the frequency takes
priority over the lower limit of control of four way valve operation compensation.
Detail
Compressor Stop
(A)
Stop Zone
A
Dropping Zone
B
Keep Zone
C
Input current
Reset Zone
(R14643)
Frequency control in each zone
Stop zone
Š After 2.5 seconds in this zone, the compressor is stopped.
Dropping zone
Š The upper limit of the compressor frequency is defined as operation frequency – 2 Hz.
Š After this, the output frequency is lowered by 2 Hz every second until it reaches the keep
zone.
Keep zone
Š The present maximum frequency goes on.
Reset zone
Š Limit of the frequency is canceled.
A (A)
B (A)
C (A)
RK(X)S25F2V1B
RK(X)S25G2V1B
RK(X)S25G2V1B9
RXS25J2V1B
RXS25K2V1B
RXS25K3V1B
Cooling
Heating
9.25
Cooling
Heating
9.25
Cooling
Heating
9.25
Cooling
Heating
9.25
6.0
5.25
7.5
6.75
RK(X)S35F2V1B
RK(X)S35G2V1B
Cooling
A (A)
B (A)
C (A)
Heating
9.25
6.5
5.75
7.5
6.75
RK(X)S35G2V1B9
RXS35J2V1B
RXS35K2V1B
Cooling
Heating
6.25
5.5
7.5
6.75
RK(X)S50F2V1B
RK(X)S50G2V1B
RXS50J2V1B
Cooling
Heating
7.5
6.75
RXS50K2V1B
Cooling
20.0
Heating
7.25
8.25
9.25
8.25
10.0
15.0
13.0
20.0
15.0
6.5
7.5
7.5
9.0
14.0
12.0
14.0
Limitation of current dropping and stop value according to the outdoor temperature
Š The current drops when outdoor temperature becomes higher than a certain level
(depending on the model).
64
Function and Control
SiBE06-708_C
3.6
Control Specification
Freeze-up Protection Control
Outline
During cooling operation, the signal sent from the indoor unit controls the operating frequency
limitation and prevents freezing of the indoor heat exchanger. (The signal from the indoor unit is
divided into zones.)
Detail
The operating frequency limitation is judged with the indoor heat exchanger temperature.
Indoor heat exchanger
thermistor temperature
13˚C
Reset zone
A˚C
Up zone
B˚C
Keep zone
C˚C
Dropping zone
0˚C
Stop zone
(R14718)
3.7
A (°C)
B (°C)
C (°C)
7
5
3
Heating Peak-cut Control
Outline
During heating operation, the indoor heat exchanger temperature determines the frequency
upper limit to prevent abnormal high pressure.
Detail
Stop zone
A˚C
B˚C
Dropping zone
C˚C
Keep zone
D˚C
Indoor heat exchanger
thermistor temperature
Zone
Stop zone
Function and Control
Up zone
Reset zone
E˚C
(R14645)
Control
When the temperature reaches the stop zone, the compressor stops.
Dropping zone
Keep zone
The upper limit of frequency decreases.
The upper limit of frequency is kept.
Up zone
Reset zone
The upper limit of frequency increases.
The upper limit of frequency is canceled.
A (°C)
25/35 class
65
50 class
65
B (°C)
C (°C)
56
53
56
55
D (°C)
E (°C)
51
46
53
51
65
Control Specification
3.8
SiBE06-708_C
Outdoor Fan Control
1. Fan ON control to cool down the electrical box
The outdoor fan is turned ON when the electrical box temperature is high while the compressor
is OFF.
2. Fan OFF control during defrosting
The outdoor fan is turned OFF during defrosting.
3. Fan OFF delay when stopped
The outdoor fan is turned OFF 60 seconds after the compressor stops.
4. Fan speed control for pressure difference upkeep
The rotation speed of the outdoor fan is controlled for keeping the pressure difference during
cooling operation with low outdoor temperature.
Š When the pressure difference is low, the rotation speed of the outdoor fan is reduced.
Š When the pressure difference is high, the rotation speed of the outdoor fan is controlled as
well as normal operation.
5. Fan speed control during forced cooling operation
The outdoor fan is controlled as well as normal operation during forced cooling operation.
6. Fan speed control during POWERFUL operation
The rotation speed of the outdoor fan is increased during POWERFUL operation.
7. Fan speed control during indoor / outdoor unit quiet operation
The rotation speed of the outdoor fan is reduced by the command of the indoor / outdoor unit
quiet operation.
8. Fan ON/OFF control when operation starts / stops
The outdoor fan is turned ON when the operation starts. The outdoor fan is turned OFF when
the operation stops.
3.9
Liquid Compression Protection Function
Outline
In order to obtain the dependability of the compressor, the compressor is stopped according to
the outdoor temperature and the outdoor heat exchanger temperature.
Detail
„ Operation stops depending on the outdoor temperature.
Compressor turns off under the conditions that the system is in cooling operation and outdoor
temperature is below –12°C.
66
Function and Control
SiBE06-708_C
Control Specification
3.10 Defrost Control
Outline
Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor
heat exchanger temperature must be more than a certain value to finish.
Detail
Conditions for Starting Defrost
„ The starting conditions are determined with the outdoor temperature and the outdoor heat
exchanger temperature.
„ The system is in heating operation.
„ The compressor operates for 6 minutes.
„ More than A minutes of accumulated time pass after the start of the operation, or ending the
previous defrosting.
Conditions for Canceling Defrost
The judgment is made with the outdoor heat exchanger temperature. (B°C)
D Hz
C Hz
PI control
Frequency
0 Hz
0 Hz
F sec.
E sec.
Compressor
Four way valve
G sec.
H sec.
ON
OFF
ON
OFF
5 sec.
5 sec.
ON
Fan
OFF
J pulse
Electronic expansion
valve opening
L pulse
M pulse
K pulse
Initial opening
(R18152)
RXS25/35F2V1B
A (minutes)
RXS25/35G2V1B
RXS25/35G2V1B9
RXS25/35J2V1B
RXS25K2V1B
RXS25K3V1B
RXS35K2V1B
RXS50F2V1B
RXS50G2V1B
RXS50J2V1B
RXS50K2V1B
28
28
28
28
44
44
44
B (°C)
4 ~ 18
4 ~ 18
4 ~ 18
4 ~ 18
4 ~ 12
4 ~ 12
4 ~ 12
C (Hz)
74
76
68
76
55
55
55
D (Hz)
86
86
86
86
90
90
90
E (seconds)
50
50
50
50
60
60
60
F (seconds)
60
60
60
60
120
120
120
G (seconds)
480
480
480
480
340
340
340
H (seconds)
50
60
50
60
30
50
50
J (pulse)
450
450
K (pulse)
350
350
L (pulse)
350
350
M (pulse)
450
: The same value continues.
Function and Control
450
450
450
450
450
350
200
450
450
350
350
400
300
450
450
450
450
450
450
450
450
67
Control Specification
SiBE06-708_C
3.11 Electronic Expansion Valve Control
During target discharge pipe temperature control
When the frequency changes under target discharge
pipe temperature control
When the disconnection of the discharge pipe
thermistor is ascertained
When the frequency changes under the control for
disconnection of the discharge pipe thermistor
Under defrost control
The followings are the examples of electronic expansion valve control which function in each
operation mode.
When the frequency changes under starting control
Detail
When the operation starts
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. Electronic expansion valve control when the frequency changes
3. Electronic expansion valve control for defrosting
4. Electronic expansion valve control when the discharge pipe temperature is abnormally high
5. Electronic expansion valve control when the discharge pipe thermistor is disconnected
Feedback Control
Target discharge pipe temperature control
When the power turns on or when the compressor
stops
Outline
Starting control
−
h
−
−
−
−
−
−
Control when the frequency changes
−
−
h
−
h
−
−
−
Target discharge pipe temperature control
−
−
−
h
−
−
−
−
Control for disconnection of the discharge
pipe thermistor
−
−
−
−
−
h
h
−
High discharge pipe temperature control
−
h
h
h
h
−
−
−
Pressure equalizing control
h
−
−
−
−
−
−
−
Opening limit control
−
h
h
h
h
h
h
−
Starting control
−
h
−
−
−
−
−
−
Control when the frequency changes
−
−
h
−
h
−
−
−
Target discharge pipe temperature control
−
−
−
h
−
−
−
−
Control for disconnection of the discharge
pipe thermistor
−
−
−
−
−
h
h
−
High discharge pipe temperature control
−
h
h
h
h
−
−
−
Defrost control
−
−
−
−
−
−
−
h
Pressure equalizing control
h
−
−
−
−
−
−
−
Opening limit control
−
h
h
h
h
h
h
−
h : Holding Functions
— : No Functions
Cooling
Heating
68
Function and Control
SiBE06-708_C
Control Specification
3.11.1 Fully Closing with Power ON
The electronic expansion valve is initialized when turning on the power. The opening position is
set and the pressure equalization is developed.
3.11.2 Pressure Equalizing Control
When the compressor is stopped, the pressure equalizing control is activated. The electronic
expansion valve opens, and develops the pressure equalization.
3.11.3 Opening Limit Control
Outline
A maximum and minimum opening of the electronic expansion valve are limited.
Detail
Maximum opening (pulse)
Minimum opening (pulse)
25/35 class
50 class
480
52
480
54
The electronic expansion valve is fully closed when cooling operation stops, and is opened at a
fixed degree during defrosting.
3.11.4 Starting Operation Control
The electronic expansion valve opening is controlled when the operation starts, and prevents
superheating or liquid compression.
3.11.5 Control when the Frequency Changes
When the target discharge pipe temperature control is active, if the target frequency is changed
to a specified value in a certain time period, the target discharge pipe temperature control is
canceled and the target opening of the electronic expansion valve is changed according to the
shift.
3.11.6 High Discharge Pipe Temperature Control
When the compressor is operating, if the discharge pipe temperature exceeds a certain value,
the electronic expansion valve opens and the refrigerant runs to the low pressure side. This
procedure lowers the discharge pipe temperature.
Function and Control
69
Control Specification
SiBE06-708_C
3.11.7 Control for Disconnection of the Discharge Pipe Thermistor
Outline
The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe
temperature with the condensation temperature. If the discharge pipe thermistor is
disconnected, the electronic expansion valve opens according to the outdoor temperature and
the operation frequency, operates for a specified time, and then stops.
After 3 minutes, the operation restarts and checks if the discharge pipe thermistor is
disconnected. If the discharge pipe thermistor is disconnected, the system stops after operating
for a specified time.
If the disconnection is detected repeatedly, the system is shut down. When the compressor runs
for 60 minutes without any error, the error counter is reset.
Detail
When the starting control (cooling: A seconds, heating: B seconds) finishes, the detection timer
for disconnection of the discharge pipe thermistor (C seconds) starts. When the timer is over,
the following adjustment is made.
1. When the operation mode is cooling
When the following condition is fulfilled, the discharge pipe thermistor disconnection is
ascertained.
Discharge pipe temperature + 6°C < outdoor heat exchanger temperature
2. When the operation mode is heating
When the following condition is fulfilled, the discharge pipe thermistor disconnection is
ascertained.
Discharge pipe temperature + 6°C < indoor heat exchanger temperature
25/35 class
RK(X)S50F2V1B
RK(X)S50G2V1B
RXS50J2V1B
RXS50K2V1B
A (seconds)
B (seconds)
10
120
10
30
60
30
C (seconds)
810
540
540
Adjustment when the thermistor is disconnected
When the disconnection is ascertained, the compressor continues operation for 9 minutes and
then stops.
If the compressor stops repeatedly, the system is shut down.
3.11.8 Target Discharge Pipe Temperature Control
The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger
temperature, and the electronic expansion valve opening is adjusted so that the actual
discharge pipe temperature becomes close to the target discharge pipe temperature. (Indirect
SH (superheating) control using the discharge pipe temperature)
The target discharge pipe
temperature is set as to become the
aiming SH.
SC
(Subcool)
The inclination does not change
depending on the operating condition.
SH
(Superheat)
(R14213)
The electronic expansion valve opening and the target discharge pipe temperature are adjusted
every 20 seconds. The target discharge pipe temperature is controlled by indoor heat
exchanger temperature and outdoor heat exchanger temperature. The opening degree of the
electronic expansion valve is controlled by the followings.
Š Target discharge pipe temperature
Š Actual discharge pipe temperature
Š Previous discharge pipe temperature
70
Function and Control
SiBE06-708_C
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. Radiation fin thermistor
4. Outdoor temperature thermistor
3.12.2 Detection of Overcurrent and Overload
Outline
An excessive output current is detected and the OL temperature is observed to protect the
compressor.
Detail
„ If the OL (compressor head) temperature exceeds 120°C, the system shuts down the
compressor.
„ If the inverter current exceeds 9.25 ~ 20 A (depending on the model), the system shuts down
the compressor.
3.12.3 Refrigerant Shortage Control
Outline
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 refrigerant shortage.
The power consumption is low comparing with that in the normal operation when refrigerant is
insufficient, and refrigerant shortage is detected by checking power consumption.
Power consumption
Refrigerant shortage zone
55 Hz
Frequency
(R11384)
II: Detecting by discharge pipe temperature
If the discharge pipe temperature is higher than the target discharge pipe temperature, and the
electronic expansion valve is fully open for more than the specified time, it is regarded as
refrigerant shortage.
Target discharge
pipe temperature
Refrigerant shortage
zone
(R1391)
III: Detecting by the difference of temperature
If the difference between suction and discharge temperature is smaller than the specified value,
it is regarded as refrigerant shortage.
Refer to page 88 for detail.
Function and Control
71
SiBE06-708_C
Part 5
Remote Controller
1. FVXS25/35/50FV1B..............................................................................73
72
Remote Controller
SiBE06-708_C
FVXS25/35/50FV1B
1. FVXS25/35/50FV1B
Signal transmitter
Receiver
Display (LCD)
• Displays the current settings.
(In this illustration, each section is
shown with all its displays on for the
purpose of explanation.)
• 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.
• The maximum distance for
communication is approx. 7m.
TEMPERATURE
adjustment buttons
• Changes the temperature setting.
FAN setting button
• Selects the airflow rate setting
every time you press this button.
Auto
Indoor unit quiet
: AUTO
18 ~ 30 °C
: DRY
Not available
: COOL
18 ~ 32 °C
: HEAT
10 ~ 30 °C
: FAN
Not available
Low
ON/OFF button
• Press this button once to
start operation.
Press once again to stop it.
Middle low
High
Middle high
Middle
POWERFUL1 button
• In indoor unit quiet operation,
operation sound becomes weak.
(The airflow rate also decreases.)
• In DRY operation, the airflow rate
setting is not available.
• POWERFUL operation.
< ARC452A1 >
(R17823)
The remote controller is compatible with both cooling only and heat pump models 2.
Reference
Refer to the following pages for detail.
1 POWERFUL operation
2 Model Type Setting
Note:
Remote Controller
P.49
P.146
Refer to the operation manual of applicable model for detail. You can download operation
manual from ‘DISTRIBUTOR’S PAGE’:
DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual
(URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php)
73
FVXS25/35/50FV1B
SiBE06-708_C
Open the Front Cover
MODE button
• Selects the operation mode.
(heat hump only)
(heat hump only)
ECONO3 button
• ECONO operation.
QUIET button
SWING4 button
• OUTDOOR UNIT QUIET
operation.
• Adjusts the airflow direction.
• When you press the SWING
button, the flap moves up and
down. The flap stops when you
press the SWING button
again.
• QUIET operation is not
available in FAN and DRY
operation.
• QUIET operation and
POWERFUL operation
cannot be used at the same
time. Priority is given to the
function you pressed last.
WEEKLY button
: WEEKLY button
: PROGRAM button
OFF TIMER button
: COPY button
• Press this button and adjust
the day and time with the
SELECT button.
Press this button again to
complete TIMER setting.
: BACK button
: NEXT button
• WEEKLY TIMER5 operation.
TIMER CANCEL
button
ON TIMER button
• Press this button and adjust
the day and time with the
SELECT button. Press this
button again to complete
TIMER setting.
• Cancels the timer setting.
• Cannot be used for the
WEEKLY TIMER operation.
SELECT button
• It changes the ON/OFF
TIMER and WEEKLY TIMER
settings.
CLOCK6 button
(R17824)
Reference
Refer to the following pages for detail.
3 ECONO operation
4 Auto swing setting
Note:
74
P.48
P.41
5 WEEKLY TIMER operation
6 Clock setting
P.51
P.50
Refer to the operation manual of applicable model for detail. You can download operation
manual from ‘DISTRIBUTOR’S PAGE’:
DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual
(URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php)
Remote Controller
SiBE06-708_C
Part 6
Service Diagnosis
1. Troubleshooting with LED .....................................................................77
1.1 Indoor Unit..............................................................................................77
1.2 Outdoor Unit ...........................................................................................77
2. Problem Symptoms and Measures .......................................................78
3. Service Check Function ........................................................................79
4. Troubleshooting ....................................................................................82
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
4.25
4.26
Error Codes and Description ..................................................................82
Indoor Unit PCB Abnormality .................................................................83
Freeze-up Protection Control or Heating Peak-cut Control....................84
Fan Motor (DC Motor) or Related Abnormality.......................................85
Thermistor or Related Abnormality (Indoor Unit)....................................87
Refrigerant Shortage ..............................................................................88
Low-voltage Detection or Over-voltage Detection..................................91
Signal Transmission Error (between Indoor Unit and Outdoor Unit) ......93
Signal Transmission Error on Outdoor Unit PCB
(RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Only)....................95
Unspecified Voltage (between Indoor Unit and Outdoor Unit) ...............96
Outdoor Unit PCB Abnormality...............................................................97
OL Activation (Compressor Overload) ...................................................99
Compressor Lock .................................................................................101
DC Fan Lock ........................................................................................102
Input Overcurrent Detection .................................................................103
Four Way Valve Abnormality................................................................104
Discharge Pipe Temperature Control...................................................106
High Pressure Control in Cooling .........................................................107
Compressor System Sensor Abnormality ............................................108
Position Sensor Abnormality ................................................................110
DC Voltage / Current Sensor Abnormality (25/35 Class Only).............113
CT or Related Abnormality (RK(X)S50F2V1B, RK(X)S50G2V1B,
RXS50J2V1B Only)..............................................................................114
Thermistor or Related Abnormality (Outdoor Unit)...............................116
Electrical Box Temperature Rise..........................................................118
Radiation Fin Temperature Rise ..........................................................121
Output Overcurrent Detection ..............................................................124
5. Check ..................................................................................................126
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
Service Diagnosis
Thermistor Resistance Check ..............................................................126
Fan Motor Connector Output Check ....................................................127
Power Supply Waveforms Check.........................................................127
Electronic Expansion Valve Check.......................................................128
Four Way Valve Performance Check ...................................................129
Inverter Units Refrigerant System Check .............................................129
Inverter Analyzer Check .......................................................................130
Rotation Pulse Check on the Outdoor Unit PCB ..................................131
Installation Condition Check.................................................................133
Discharge Pressure Check...................................................................133
75
SiBE06-708_C
5.11
5.12
5.13
5.14
76
Outdoor Fan System Check .................................................................134
Main Circuit Short Check......................................................................134
Capacitor Voltage Check......................................................................136
Power Module Check ...........................................................................137
Service Diagnosis
SiBE06-708_C
Troubleshooting with LED
1. Troubleshooting with LED
1.1
Indoor Unit
Operation Lamp
The operation lamp blinks when any of the following errors is detected.
1. When a protection device of the indoor or outdoor unit is activated, or when the thermistor
malfunctions.
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.
Operation lamp (green)
(R12426)
Service Monitor
1.2
The indoor unit has one green LED (LED A) on the control PCB. When the microcomputer
works in order, the LED A blinks.
Outdoor Unit
The outdoor unit has one green LED (LED A) on the PCB. When the microcomputer works in
order, the LED A blinks.
Service Diagnosis
77
Problem Symptoms and Measures
SiBE06-708_C
2. Problem Symptoms and Measures
Symptom
Check Item
The unit does not operate. Check the power supply.
Check the type of the indoor unit.
Check the outdoor temperature.
Diagnose with remote controller
indication.
Operation sometimes
stops.
Details of Measure
Reference
Page
Check if the rated voltage is supplied.
Check if the indoor unit type is compatible with
the outdoor unit.
—
Heating operation cannot be used when the
outdoor temperature is 18°CWB or higher, and
cooling operation cannot be used when the
outdoor temperature is below –10°CDB.
—
—
82
Check the remote controller
addresses.
Check the power supply.
Check if address settings for the remote
controller and indoor unit are correct.
A power failure of 2 to 10 cycles stops air
conditioner operation. (Operation lamp OFF)
Check the outdoor temperature.
Heating operation cannot be used when the
outdoor temperature is 18°CWB or higher, and
cooling operation cannot be used when the
outdoor temperature is below –10°CDB.
—
—
82
Diagnose with remote controller
indication.
The unit operates but does Check for wiring and piping errors in
not cool, or does not heat. the connection between the indoor
—
unit and outdoor unit.
Check for thermistor detection errors. Check if the thermistor is mounted securely.
146
—
—
—
Check for faulty operation of the
electronic expansion valve.
Set the unit to cooling operation, and check the
liquid pipe temperature to see if the electronic
expansion valve works.
—
Diagnose with remote controller
indication.
—
82
Diagnose by service port pressure
and operating current.
Large operating noise and Check the output voltage of the
vibrations
power module.
Check the power module.
Check the installation condition.
78
—
Check for refrigerant shortage.
88
—
137
—
Check if the required spaces for installation
(specified in the installation manual) are
provided.
—
—
Service Diagnosis
SiBE06-708_C
Service Check Function
3. Service Check Function
Check Method 1
1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature
display screen.
Timer cancel button
< ARC452 Series >
(R14554)
2. Press the timer cancel button repeatedly until a long beep sounds.
„ The code indication changes in the sequence shown below.
Note:
Service Diagnosis
No.
1
Code
00
No.
13
Code
C7
No.
25
Code
UA
2
3
U4
L5
14
15
A3
H8
26
27
UH
P4
4
5
E6
H6
16
17
H9
C9
28
29
L3
L4
6
7
H0
A6
18
19
C4
C5
30
31
H7
U2
8
9
E7
U0
20
21
J3
J6
32
33
EA
AH
10
11
F3
A5
22
23
E5
A1
34
FA
12
F6
24
E1
1. A short beep or two consecutive beeps indicate non-corresponding codes.
2. To return to the normal mode, hold the timer cancel button down for 5 seconds. When the
remote controller is left untouched for 60 seconds, it also returns to the normal mode.
3. Not all the error codes are displayed. When you cannot find the error code, try the check
method 2. (→ Refer to page 80.)
79
Service Check Function
SiBE06-708_C
Check Method 2
1. Press the 3 buttons (TEMP , TEMP , MODE) at the same time to enter the diagnosis
mode.
(R8381)
The left-side number blinks.
(R8382)
2. Press the [TEMP] or
beeps or the long beep.
button and change the number until you hear the two consecutive
(R8383)
3. Diagnose by the sound.
beep : The left-side number does not correspond with the error code.
two consecutive beeps : The left-side number corresponds with the error code but the
right-side number does not.
long beep : Both the left-side and right-side number correspond with the error code.
The numbers indicated when you hear the long beep are the error code.
→ Refer to page 82.
4. Press the [MODE] button.
(R8384)
The right-side number blinks.
(R8385)
80
Service Diagnosis
SiBE06-708_C
Service Check Function
5. Press the [TEMP]
or
button and change the number until you hear the long beep.
(R8383)
6. Diagnose by the sound.
beep : The left-side number does not correspond with the error code.
two consecutive beeps : The left-side number corresponds with the error code but
the right-side number does not.
long beep : Both the left-side and right-side number corresponds with the error code.
7. Determine the error code.
The numbers indicated when you hear the long beep are the error code.
Error codes and description → Refer to page 82.
8. Press the [MODE] button to exit from the diagnosis mode.
(R8384)
The display
means the trial operation mode.
Refer to page 144 for trial operation.
(R9659)
9. Press the [ON/OFF] button twice to return to the normal mode.
(R9660)
Note:
Service Diagnosis
When the remote controller is left untouched for 60 seconds, it returns to the normal mode.
81
Troubleshooting
SiBE06-708_C
4. Troubleshooting
4.1
Error Codes and Description
Error Codes
System
Indoor
Unit
Outdoor
Unit
00
U0
U2
U4
UA
A1
A5
A6
C4
C9
E1
E5
E6
E7
E8
EA
F3
F6
H0
H6
Reference
Page
Description
Normal
—
Refrigerant shortage
88
Low-voltage detection or over-voltage detection
91
Signal transmission error (between indoor unit and outdoor unit)
93
Unspecified voltage (between indoor unit and outdoor unit)
96
Indoor unit PCB abnormality
83
Freeze-up protection control or heating peak-cut control
84
Fan motor (DC motor) or related abnormality
85
Indoor heat exchanger thermistor or related abnormality
87
Room temperature thermistor or related abnormality
87
Outdoor unit PCB abnormality
97
OL activation (compressor overload)
99
Compressor lock
101
DC fan lock
102
Input overcurrent detection
103
Four way valve abnormality
104
Discharge pipe temperature control
106
High pressure control in cooling
107
Compressor system sensor abnormality
108
Position sensor abnormality
110
DC voltage / current sensor abnormality (25/35 class only)
113
CT or related abnormality
(RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B only)
114
H9
J3
J6
L3
L4
L5
P4
Outdoor temperature thermistor or related abnormality
116
Discharge pipe thermistor or related abnormality
116
Outdoor heat exchanger thermistor or related abnormality
116
Electrical box temperature rise
118
Radiation fin temperature rise
121
Output overcurrent detection
124
Radiation fin thermistor or related abnormality
116
U7
Signal transmission error on outdoor unit PCB
(RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B only)
95
H8
: Displayed only when system-down occurs.
82
Service Diagnosis
SiBE06-708_C
4.2
Troubleshooting
Indoor Unit PCB Abnormality
A1
Error Code
Method of Error
Detection
The system checks if the circuit works properly within the microcomputer of the indoor unit.
Error Decision
Conditions
The system cannot set the internal settings.
Supposed
Causes
„
„
„
„
Wrong models interconnected
Defective indoor unit PCB
Disconnection of connector
Reduction of power supply voltage
Troubleshooting
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
Check the combination of the
indoor and outdoor unit.
NO
OK?
Match the compatible
models.
YES
∗ To secure the connection,
once disconnect the connector
and then reconnect it.
Check the connection of
connectors (See Note).
YES
OK?
Check the power supply
voltage.
NO
Voltage as rated?
NO
Correct the power
supply.
YES
Start operation.
Correct the connection.
Error repeats?
YES
NO
YES
Error repeats?
Replace the indoor unit
PCB.
Completed.
Check the power supply
voltage.
NO
Voltage as rated?
NO
Correct the power
supply.
YES
Start operation.
Error repeats?
NO
YES
Replace the indoor unit
PCB.
Completed.
Completed.
(R15310)
Note:
Check the following connector.
Model Type
Floor standing type
Service Diagnosis
Connector
Terminal board ~ Control PCB (H1, H2, H3)
83
Troubleshooting
4.3
SiBE06-708_C
Freeze-up Protection Control or Heating Peak-cut
Control
Error Code
A5
Method of Error
Detection
„ Freeze-up protection control
Error Decision
Conditions
„ Freeze-up protection control
During cooling operation, the freeze-up protection control (operation halt) is activated
according to the temperature detected by the indoor heat exchanger thermistor.
„ Heating peak-cut control
During heating operation, the temperature detected by the indoor heat exchanger thermistor
is used for the heating peak-cut control (operation halt, outdoor fan stop, etc.)
During cooling operation, the indoor heat exchanger temperature is below 0°C.
„ Heating peak-cut control
During heating operation, the indoor heat exchanger temperature is above 65°C
Supposed
Causes
„
„
„
„
„
Short-circuited air
Clogged air filter of the indoor unit
Dust accumulation on the indoor heat exchanger
Defective indoor heat exchanger thermistor
Defective indoor unit PCB
Troubleshooting
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
Check No.01
Refer to P.126
Check the air passage.
YES
Is there any short circuit?
Provide sufficient air passage.
NO
Check the air filter.
Dirty?
YES
Clean the air filter.
NO
Check the dust accumulation on
the indoor heat exchanger.
Dirty?
YES
Clean the indoor heat
exchanger.
NO
Check No. 01
Check the indoor heat exchanger
thermistor.
As
described in the
thermistor characteristic
chart?
YES
NO
Replace the thermistor.
Replace the indoor unit PCB.
(R15715)
84
Service Diagnosis
SiBE06-708_C
4.4
Troubleshooting
Fan Motor (DC Motor) or Related Abnormality
Error Code
A6
Method of Error
Detection
The rotation speed detected by the Hall IC during fan motor operation is used to determine
abnormal fan motor operation.
Error Decision
Conditions
The detected rotation speed does not reach the demanded rotation speed of the target tap, and
is less than 50% of the maximum fan motor rotation speed.
Supposed
Causes
„
„
„
„
„
Service Diagnosis
Layer short inside the fan motor winding
Breaking of wire inside the fan motor
Breaking of the fan motor lead wires
Defective capacitor of the fan motor
Defective indoor unit PCB
85
Troubleshooting
SiBE06-708_C
Troubleshooting
Caution
Check No.02
Refer to P.127
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power supply
and rotate the fan by
hand.
Does the fan
rotate smoothly?
NO
Replace the indoor
fan motor.
YES
Turn the power on and
start operation.
Does the fan
rotate?
Turn off the power supply
NO and disconnect the fan
motor connector, then
turn the power on.
YES
Note : The motor may break when the
motor connector is disconnected
while remaining power supply.
(Turn off the power supply before
connecting the connector also.)
Check No.02
Check the output of the
fan motor connector
Is the
motor power
supply voltage
310 ~ 340 VDC
generated?
NO
Replace the indoor
unit PCB.
YES
Is the motor
control voltage 15
VDC generated?
NO
Replace the indoor
unit PCB.
YES
Is the
rotation
command voltage
1 ~ 5 VDC
generated?
Stop the fan motor.
YES
Replace the indoor
fan motor.
NO
Check No.02
Check the output of the
fan motor connector
Is the rotation
pulse generated?
YES
Is the rotation
pulse generated?
YES
NO
NO
Replace the indoor
fan motor and the
indoor unit PCB.
Replace the indoor
unit PCB.
Replace the indoor
fan motor.
Replace the indoor
unit PCB.
(R14970)
86
Service Diagnosis
SiBE06-708_C
4.5
Troubleshooting
Thermistor or Related Abnormality (Indoor Unit)
Error Code
C4, C9
Method of Error
Detection
The temperatures detected by the thermistors determine thermistor errors.
Error Decision
Conditions
The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation.
Supposed
Causes
„ Disconnection of connector
„ Defective thermistor corresponding to the error code
„ Defective indoor unit PCB
Troubleshooting
Caution
Check No.01
Refer to P.126
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the connection of
connectors.
Normal?
NO
Correct the connection.
YES
Check No. 01
Check the thermistor resistance
value.
Normal?
NO
YES
Replace the thermistor.
Replace the indoor unit PCB.
(R15717)
C4 : Indoor heat exchanger thermistor
C9 : Room temperature thermistor
Service Diagnosis
87
Troubleshooting
4.6
SiBE06-708_C
Refrigerant Shortage
Error Code
Method of Error
Detection
U0
Refrigerant shortage detection I:
Refrigerant shortage is detected by checking the input current value and the compressor
running frequency. If the refrigerant is short, the input current is lower than the normal value.
Refrigerant shortage detection II:
Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of
the electronic expansion valve. If the refrigerant is short, the discharge pipe temperature tends
to rise.
Refrigerant shortage detection III:
Refrigerant shortage is detected by checking the difference between suction and discharge
temperature.
Error Decision
Conditions
Refrigerant shortage detection I:
The following conditions continue for 7 minutes.
<25/35 class, RXS50K2V1B>
Š Input current × input voltage ≤ A × output frequency + B
Š Output frequency > C
25/35 class
RXS50K2V1B
A (–)
B (W)
C (Hz)
640/256
2000/256
0
–181
55
55
<RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B>
Š Input current ≤ D × output frequency + E
Š Output frequency > F
RK(X)S50F2V1B
RK(X)S50G2V1B
RXS50J2V1B
D (–)
E (A)
F (Hz)
18/1000
0.7
55
Refrigerant shortage detection II:
The following conditions continue for 80 seconds.
Š Opening of the electronic expansion valve ≥ G
Š Discharge pipe temperature > H × target discharge pipe temperature + J
RK(X)S25/35F2V1B
RK(X)S25/35G2V1B
RK(X)S25/35G2V1B9
RXS25/35J2V1B
RXS25/35K2V1B
RXS25K3V1B
RK(X)S50F2V1B
RK(X)S50G2V1B
RXS50J2V1B
RXS50K2V1B
88
G (pulse)
H (–)
J (°C)
480
255/256
30
480
128/128
30
480
128/128
cooling: 20, heating: 45
480
128/128
cooling: 60, heating: 45
Service Diagnosis
SiBE06-708_C
Troubleshooting
Refrigerant shortage detection III: (25/35 class only)
When the difference of the temperature is smaller than G°C, it is regarded as refrigerant
shortage.
Operation
mode
Description
G (°C)
Cooling
room thermistor temperature – indoor heat exchanger temperature
outdoor heat exchanger temperature – outdoor temperature
4.0
4.0
Heating
indoor heat exchanger temperature – room thermistor temperature
outdoor temperature – outdoor heat exchanger temperature
3.0
3.0
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
„ Disconnection of the discharge pipe thermistor, indoor or outdoor heat exchanger thermistor,
„
„
„
„
Service Diagnosis
room or outdoor temperature thermistor
Closed stop valve
Refrigerant shortage (refrigerant leakage)
Poor compression performance of compressor
Defective electronic expansion valve
89
Troubleshooting
SiBE06-708_C
Troubleshooting
Caution
Check No.01
Refer to P.126
Check No.12
Refer to P.128
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Any thermistor
disconnected?
NO
Stop valve closed?
YES
∗ Discharge pipe thermistor
∗ Indoor or outdoor heat exchanger thermistor
∗ Room temperature thermistor
∗ Outdoor temperature thermistor
YES
Replace the thermistor(s) in
position.
Open the stop valve.
NO
Check for refrigerant shortage.
Oil oozing at relay
pipe connections?
YES
Repair the pipe flare or
replace the union.
NO
Oil oozing at internal
piping?
YES
NO
Compressor vibrating
too much?
NO
Check No. 12
Electronic expansion valve
functioning?
YES Check the power transistor
harness for loosening.
Correct it as required. Also
replace the cracked pipe.
Check the pipes for
improper contact and
correct them as required.
Replace the cracked pipe.
NO
Replace the electronic
expansion valve.
YES
Change for a specified amount of
fresh refrigerant.
Refrigerant shortage error
again?
NO
YES
Check No. 01
Check the thermistors.
NG
Replace the defective
thermistor(s).
OK
Replace the outdoor unit PCB.
Error again?
YES
Replace the compressor.
NO
Completed.
Completed.
(R16015)
90
Service Diagnosis
SiBE06-708_C
4.7
Troubleshooting
Low-voltage Detection or Over-voltage Detection
Error Code
U2
Method of Error
Detection
Low-voltage detection:
An abnormal voltage drop is detected by the DC voltage detection circuit.
Over-voltage detection:
An abnormal voltage rise is detected by the over-voltage detection circuit.
Error Decision
Conditions
Low-voltage detection:
„ The voltage detected by the DC voltage detection circuit is below 150 ~ 180 V (depending on
the model).
„ The compressor stops if the error occurs, and restarts automatically after 3-minute standby.
Over-voltage detection:
„ An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer.
„ The compressor stops if the error occurs, and restarts automatically after 3-minute standby.
Supposed
Causes
Service Diagnosis
„
„
„
„
„
„
„
„
„
„
Power supply voltage is not as specified.
Defective DC voltage detection circuit
Defective over-voltage detection circuit
Defective PAM control part
Disconnection of compressor harness
Short circuit inside the fan motor winding
Noise
Momentary fall of voltage
Momentary power failure
Defective outdoor unit PCB
91
Troubleshooting
SiBE06-708_C
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Is the power
supply voltage as
rated?
NO
Correct the power supply.
YES
Is the
compressor
harness loose or
disconnected?
YES
Reconnect the compressor
harness.
NO
Rotate the outdoor fan by hand.
Does the
outdoor fan rotate
smoothly?
NO
Replace both the fan motor
and the outdoor unit PCB.
YES
(Precaution before turning on the power again)
Make sure the power has been off for
at least 30 seconds.
Turn on the
power again. System
restarted?
YES Disturbance factors
∗ Noise ∗ Power supply distortion
Check for such factors for a
long term.
∗ Try to restart a few times.
NO
Repeat a few
times.
Replace the outdoor unit
PCB.
(R17948)
92
Service Diagnosis
SiBE06-708_C
4.8
Troubleshooting
Signal Transmission Error (between Indoor Unit and
Outdoor Unit)
Error Code
U4
Method of Error
Detection
The data received from the outdoor unit in signal transmission is checked whether it is normal.
Error Decision
Conditions
The data sent from the outdoor unit cannot be received normally, or the content of the data is
abnormal.
Supposed
Causes
„
„
„
„
„
„
„
Service Diagnosis
Reduction of power supply voltage
Wiring error
Breaking of the connection wires between the indoor and outdoor units (wire No. 3)
Defective outdoor unit PCB
Short circuit inside the fan motor winding
Defective indoor unit PCB
Disturbed power supply waveform
93
Troubleshooting
SiBE06-708_C
Troubleshooting
Check No.11
Refer to P.127
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the power supply voltage.
Voltage as rated?
NO
Correct the power supply.
YES
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 voltage of the
connection wires on the indoor
terminal board between No. 1
and No. 3, and between No. 2
and No. 3.
Properly insulated?
YES
NO
Replace the connection wires
between the indoor unit and
outdoor unit.
Check the LED A on the outdoor
unit PCB.
Is LED A blinking?
NO
Diagnose the outdoor unit
PCB.
YES
Rotate the
outdoor fan by hand.
Does the outdoor fan rotate
smoothly?
NO
Replace both the fan motor
and the outdoor unit PCB.
YES
Check No.11
Check the power supply
waveform.
Is there any disturbance?
YES
NO
Replace the indoor unit PCB.
Locate the cause of the
disturbance of the power
supply waveform, and correct
it.
(R18283)
94
Service Diagnosis
SiBE06-708_C
4.9
Troubleshooting
Signal Transmission Error on Outdoor Unit PCB
(RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Only)
Error Code
U7
Method of Error
Detection
Communication error between microcomputer mounted on the main microcomputer and PM1.
Error Decision
Conditions
„ The abnormality is determined when the data sent from the PM1 can not be received for 9
seconds.
„ The error counter is reset when the data from the PM1 can be successfully received.
Supposed
Causes
„ Defective outdoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power and turn it on
again.
Error again?
NO
YES
Replace the outdoor unit
PCB.
The cause can be an
external factor other than
the malfunction.
Observe the operating
condition in long term.
(R7185)
Service Diagnosis
95
Troubleshooting
SiBE06-708_C
4.10 Unspecified Voltage (between Indoor Unit and Outdoor
Unit)
Error Code
UA
Method of Error
Detection
The supply power is detected for its requirements (different from pair type and multi type) by the
indoor / outdoor transmission signal.
Error Decision
Conditions
The pair type and multi type are interconnected.
Supposed
Causes
„
„
„
„
„
Wrong models interconnected
Wrong wiring of connecting wires
Wrong indoor unit PCB or outdoor unit PCB mounted
Defective indoor unit PCB
Defective outdoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the combination of the
indoor and outdoor unit.
OK?
NO
Match the compatible models.
YES
Are the
connection wires connected
property?
NO
Correct the connection.
YES
Check the code numbers
(2P01234, for example) of the
indoor and outdoor unit PCB with
the Parts List.
Matched compatibly?
YES
NO
Change for the correct PCB.
Replace the indoor unit PCB
(or the outdoor unit PCB).
(R11707)
96
Service Diagnosis
SiBE06-708_C
Troubleshooting
4.11 Outdoor Unit PCB Abnormality
Error Code
E1
Method of Error
Detection
„ The system checks if the microprocessor is working in order.
„ The system checks if the zero-cross signal comes in properly.
Error Decision
Conditions
„ The microprocessor program runs out of control.
„ The zero-cross signal is not detected.
Supposed
Causes
„
„
„
„
„
Troubleshooting
25/35 class, RXS50K2V1B
Defective outdoor unit PCB
Broken harness between PCBs
Noise
Momentary fall of voltage
Momentary power failure
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn on the power again.
NO
Is LED A blinking?
Replace the outdoor unit
PCB (2).
YES
Check to see if the outdoor unit is
grounded.
Grounded?
NO
Ground the system.
YES
Is the harness
broken?
YES
Replace the harness.
NO
Zero-cross signal
abnormality.
Replace the outdoor unit
PCB (1).
(R16380)
Service Diagnosis
97
Troubleshooting
Troubleshooting
SiBE06-708_C
RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn on the power again.
Error again?
YES
Replace the outdoor unit
PCB.
NO
Check to see if the unit is
grounded.
Grounded?
YES
NO
Ground the system.
The cause can be external
factors other than
malfunction.
Investigate the cause of
noise.
(R18284)
98
Service Diagnosis
SiBE06-708_C
Troubleshooting
4.12 OL Activation (Compressor Overload)
Error Code
E5
Method of Error
Detection
A compressor overload is detected through compressor OL.
Error Decision
Conditions
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
„
„
„
„
„
„
„
„
„
„
„
„
Service Diagnosis
Disconnection of discharge pipe thermistor
Defective discharge pipe thermistor
Disconnection of connector [S40]
Disconnection of 2 terminals of OL (Q1L)
Defective OL (Q1L)
Broken OL harness
Defective electronic expansion valve or coil
Defective four way valve or coil
Defective outdoor unit PCB
Refrigerant shortage
Water mixed in refrigerant
Defective stop valve
99
Troubleshooting
SiBE06-708_C
Troubleshooting
Caution
Check No.01
Refer to P.126
Check No.12
Refer to P.128
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Discharge
pipe thermistor
disconnected?
NG
∗ Discharge pipe thermistor
Replace the discharge pipe
thermistor.
OK
Connectors
are properly connected?
Check No.14
Refer to P.129
Insert the thermistor in
position.
NO
Check No. 01
Check the thermistors.
Check No.13
Refer to P.129
YES
NO
∗ Connector [S40]
∗ 2 terminals of OL (Q1L)
Connect the connectors
properly.
YES
Disconnect the connector [S40]
from the PCB.
Check
Resistance
the resistance
∞
Disconnect the 2 terminals of
between the 2 terminals on
the OL (Q1L).
the connector
[S40].
Resistance
Check the
∞
resistance between the
Replace the OL (Q1L).
2 terminals of the OL
(Q1L).
Nearly 0 Ω
Nearly 0 Ω
Check No. 12
Check the electronic
expansion valve.
NG
Replace the OL harness.
Replace the electronic
expansion valve or the coil.
OK
Check No. 13
Check the four way
valve.
NG
Replace the four way valve
or the coil.
Replace the outdoor unit
PCB.
OK
Check No. 14
Check the refrigerant
line.
OK
NG
∗ Refrigerant shortage
∗ Water mixed
∗ Stop valve
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R18316)
Note:
100
OL (Q1L) activating temperature: 120°C
OL (Q1L) recovery temperature: 95°C
Service Diagnosis
SiBE06-708_C
Troubleshooting
4.13 Compressor Lock
Error Code
E6
Method of Error
Detection
A compressor lock is detected by checking the compressor running condition through the
position detection circuit.
Error Decision
Conditions
25/35 class
„ Operation stops due to overcurrent.
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 11 minutes without any other error
50 class
„ A compressor lock is detected by the current waveform generated when applying highfrequency voltage to the motor.
„ If the error repeats, the system is shut down
„ Reset condition: Continuous run for about 5 minutes without any other error
Supposed
Causes
„ Compressor locked
„ Compressor harness disconnected
Troubleshooting
Caution
Check No.15
Refer to P.130
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
(Precaution before turning on the power again)
Make sure the power has been off for at least 30 seconds.
Turn off the power. Disconnect the
harnesses U, V, and W.
Check No.15
Check with the inverter analyzer.
Normal?
∗ Inverter analyzer:
RSUK0917C
NO
Correct the power supply or
replace the outdoor unit
PCB.
YES
Turn off the power and reconnect
the harnesses. Turn on the power
again and restart the system.
Emergency
stop without compressor
running?
YES
Replace the compressor.
NO
System shut
down after errors repeated
several times?
YES
NO
Check the outdoor electronic
expansion valve coil.
Replace it as required.
Replace the compressor.
(R18317)
Service Diagnosis
101
Troubleshooting
SiBE06-708_C
4.14 DC Fan Lock
Error Code
E7
Method of Error
Detection
An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC.
Error Decision
Conditions
„ The fan does not start in about 15 ~ 60 seconds even when the fan motor is running.
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 11 minutes (25/35 class) or 5 minutes (50 class)
without any other error
Supposed
Causes
„
„
„
„
Disconnection of the fan motor
Foreign matter stuck in the fan
Defective fan motor
Defective outdoor unit PCB
Troubleshooting
Caution
Check No.16
Refer to P.131
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Fan motor connector
disconnected?
YES
Turn off the power and
reconnect the connector.
NO
Foreign matters in or
around the fan?
YES
Remove the foreign
matters.
NO
Turn on the power.
Rotate the fan.
Fan rotates
smoothly?
NO
Replace the outdoor fan
motor.
YES
Check No. 16
Check the rotation pulse input on
the outdoor unit PCB.
Pulse signal generated?
YES
NO
Replace the outdoor fan
motor.
Replace the outdoor unit
PCB.
(R15675)
102
Service Diagnosis
SiBE06-708_C
Troubleshooting
4.15 Input Overcurrent Detection
Error Code
E8
Method of Error
Detection
An input overcurrent is detected by checking the input current value with the compressor
running.
Error Decision
Conditions
The current exceeds about 9.25 ~ 20 A (depending on the model) for 2.5 seconds with the
compressor running.
(The upper limit of the current decreases when the outdoor temperature exceeds a certain
level.)
Supposed
Causes
„
„
„
„
„
Outdoor temperature is out of operation range.
Defective compressor
Defective power module
Defective outdoor unit PCB
Short circuit
Troubleshooting
Caution
Check No.15
Refer to P.130
Check No.17
Refer to P.133
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
∗ An input overcurrent may result from wrong internal wiring. If the system is interrupted by an input
overcurrent after the wires have been disconnected and reconnected for part replacement, check the
wiring again.
Check No. 17
Check the installation condition.
Start operation and measure the
input current.
Check No.18
Refer to P.133
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.
Check No.15
Check with the inverter analyzer.
Any LED off?
NO
∗ Inverter analyzer:
RSUK0917C
YES
Correct the power supply or
replace the outdoor unit
PCB.
Turn off the power, and reconnect
the harnesses. Turn on the power
again and start operation.
Check No. 18
Check the discharge pressure.
(R18318)
Service Diagnosis
103
Troubleshooting
SiBE06-708_C
4.16 Four Way Valve Abnormality
Error Code
EA
Method of Error
Detection
The room temperature thermistor and the indoor heat exchanger thermistor are checked if they
function within their normal ranges in each operation mode.
Error Decision
Conditions
A following condition continues over 1 ~ 10 minutes (depending on the model) after operating
for 5 ~ 10 minutes (depending on the model).
„ Cooling / Dry
(room thermistor temp. – indoor heat exchanger temp.) < –5°C
„ Heating
(indoor heat exchanger temp. – room thermistor temp.) < –5°C
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
104
„
„
„
„
„
„
„
Disconnection of four way valve coil
Defective four way valve, coil, or harness
Defective outdoor unit PCB
Defective thermistor
Refrigerant shortage
Water mixed in refrigerant
Defective stop valve
Service Diagnosis
SiBE06-708_C
Troubleshooting
Troubleshooting
Caution
Check No.01
Refer to P.126
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Four way valve coil
disconnected (loose)?
YES
Correct the four way valve
coil.
NO
Check No.13
Refer to P.129
Harness out of connector?
YES
Reconnect the harness.
NO
Check No.14
Refer to P.129
Check the continuity of the four way
valve coil and harness.
Disconnect the harness from the
connector.
Resistance
between harnesses about
1000 ~ 2000 Ω?
NO
Replace the four way
valve coil.
YES
Check No. 13
Check the four way valve
switching output.
NG
Replace the outdoor
unit PCB.
OK
Any thermistor
disconnected?
YES
Reconnect the
thermistor(s).
NO
Check No. 01
Check the thermistors.
NG
Replace the defective
thermistor(s).
OK
Check No. 14
Check the refrigerant
line.
NG
∗ Refrigerant shortage
∗ Water mixed
∗ Stop valve
Refer to the refrigerant line
check procedure.
OK
Replace the four way valve
(defective or dust-clogged).
(R15824)
Service Diagnosis
105
Troubleshooting
SiBE06-708_C
4.17 Discharge Pipe Temperature Control
Error Code
F3
Method of Error
Detection
An error is determined with the temperature detected by the discharge pipe thermistor.
Error Decision
Conditions
„ If the temperature detected by the discharge pipe thermistor rises above A°C, the
compressor stops.
„ The error is cleared when the discharge pipe temperature has dropped below B°C.
<25/35 class>
A (°C)
B (°C)
(1) above 45 Hz (rising), above 40 Hz (dropping)
110
97
(2) 30 ~ 45 Hz (rising), 25 ~ 40 Hz (dropping)
(3) below 30 Hz (rising), below 25 Hz (dropping)
105
99
92
86
<50 class>
A (°C)
110
B (°C)
95
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
„ Defective discharge pipe thermistor
„
„
„
„
„
„
(Defective outdoor heat exchanger thermistor or outdoor temperature thermistor)
Defective electronic expansion valve or coil
Refrigerant shortage
Defective four way valve
Water mixed in refrigerant
Defective stop valve
Defective outdoor unit PCB
Troubleshooting
Caution
Check No.01
Refer to P.126
Check No.12
Refer to P.128
Check No.14
Refer to P.129
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check No. 01
Check the thermistors.
OK
Check No. 12
Check the electronic
expansion valve.
NG
∗ Discharge pipe thermistor
∗ Outdoor heat exchanger thermistor
∗ Outdoor temperature thermistor
NG
Replace the defective
thermistor(s).
Replace the electronic
expansion valve or the coil.
OK
Check No. 14
Check the refrigerant
line.
OK
NG
∗ Refrigerant shortage
∗ Four way valve
∗ Water mixed
∗ Stop valve
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R15825)
106
Service Diagnosis
SiBE06-708_C
Troubleshooting
4.18 High Pressure Control in Cooling
Error Code
F6
Method of Error
Detection
High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if
the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.
Error Decision
Conditions
„ The temperature sensed by the outdoor heat exchanger thermistor rises above about
60 ~ 65°C.
„ The error is cleared when the temperature drops below about 50 ~ 55°C.
Supposed
Causes
„
„
„
„
„
„
„
The installation space is not large enough.
Dirty outdoor heat exchanger
Defective outdoor fan motor
Defective stop valve
Defective electronic expansion valve or coil
Defective outdoor heat exchanger thermistor
Defective outdoor unit PCB
Troubleshooting
Caution
Check No.01
Refer to P.126
Check No.12
Refer to P.128
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the installation space.
Check No. 17
Check the installation
condition.
NG
OK
Check No.17
Refer to P.133
Check No. 19
Check the outdoor fan.
NG
OK
Check No.18
Refer to P.133
Check No. 18
Check the discharge
pressure.
NG
Change the installation
location or direction.
Clean the outdoor heat
exchanger.
Replace the outdoor fan
motor.
Reconnect the connector or
fan motor lead wires.
Replace the stop valve.
OK
Check No.19
Refer to P.134
Check No. 12
Check the electronic
expansion valve.
NG
OK
Check No. 01
Check the outdoor heat
exchanger thermistor.
NG
Replace the electronic
expansion valve or the coil.
Replace the outdoor unit
PCB.
Replace the outdoor heat
exchanger thermistor.
OK
Replace the outdoor unit
PCB.
(R15667)
Service Diagnosis
107
Troubleshooting
SiBE06-708_C
4.19 Compressor System Sensor Abnormality
4.19.1 25/35 Class, RXS50K2V1B
Error Code
H0
Method of Error
Detection
„ The system checks the DC current before the compressor starts.
Error Decision
Conditions
„ The DC current before compressor start-up is out of the range 0.5 ~ 4.5 V (sensor output
converted to voltage value)
„ The DC voltage before compressor start-up is below 50 V.
Supposed
Causes
„ Broken or disconnected harness
„ Defective outdoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the relay harness for the
compressor.
Is the harness broken?
YES
Replace the harness.
NO
Turn off the power and turn it on
again.
Restart operation
and error displayed
again?
YES
NO
No problem.
Keep on running.
Replace the outdoor unit
PCB.
(R11712)
108
Service Diagnosis
SiBE06-708_C
Troubleshooting
4.19.2 RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B
Error Code
Method of Error
Detection
H0
„ The system checks the power supply voltage and the DC voltage before the compressor
starts.
„ The system checks the compressor current right after the compressor starts.
Error Decision
Conditions
„ The power supply voltage and the DC voltage is obviously low or high.
„ The compressor current does not run when the compressor starts.
Supposed
Causes
„
„
„
„
Disconnection of reactor
Disconnection of compressor harness
Defective outdoor unit PCB
Defective compressor
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power.
Check the connection of the
reactor.
Connection OK?
NO
Connect the reactor
properly.
YES
Check the connection of the
compressor.
Connection OK?
NO
Connect the compressor
properly.
YES
Check the reactor.
10 Ω or less?
Disconnect the reactor from the outdoor
unit PCB and measure the resistance
value between reactor terminals with
tester.
NO
Replace the reactor.
YES
Check the compressor.
10 Ω or less
between each terminal?
YES
Disconnect the compressor relay harness
from the outdoor unit PCB and measure
the resistance value between the each 3
terminals of the compressor with tester.
NO
Replace the compressor or
the compressor relay
harness.
Restart the operation again
and if the error occurs
again, replace the outdoor
unit PCB.
(R15891)
Service Diagnosis
109
Troubleshooting
SiBE06-708_C
4.20 Position Sensor Abnormality
Error Code
H6
Method of Error
Detection
A compressor start-up failure is detected by checking the compressor running condition through
the position detection circuit.
Error Decision
Conditions
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 11 minutes (25/35 class) or 5 minutes (50 class)
without any other error
Supposed
Causes
110
„
„
„
„
„
Disconnection of the compressor relay cable
Defective compressor
Defective outdoor unit PCB
Start-up failure caused by the closed stop valve
Input voltage is outside the specified range.
Service Diagnosis
SiBE06-708_C
Troubleshooting
Check No.15
Refer to P.130
Check No.18
Refer to P.133
Check No.20
Refer to P.134
Troubleshooting
25/35 Class, RXS50K2V1B
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power.
Check the power supply voltage.
Voltage as rated?
NO
Correct the power supply.
YES
Check No. 18
Check the discharge pressure.
OK?
NO
Replace the stop valve.
YES
Check No. 20
Check the short circuit of the diode
bridge.
Normal?
NO
Replace the outdoor unit
PCB.
YES
Check the connection.
Electrical
components or
compressor harnesses
connected as
specified?
NO
Reconnect the electrical
components or compressor
harnesses as specified.
YES
Turn on the power.
Check the electrolytic capacitor
voltage.
320 ± 50 VDC?
NO
Replace the outdoor unit
PCB.
YES
Turn off the power. Disconnect the
harnesses U, V, and W.
Check No.15
Check with the inverter analyzer.
Any LED OFF?
NO
∗ Inverter analyzer:
RSUK0917C
YES
Correct the power supply
or replace the outdoor unit
PCB.
Replace the compressor.
(R18319)
Service Diagnosis
111
Troubleshooting
Troubleshooting
Check No.15
Refer to P.130
Check No.18
Refer to P.133
SiBE06-708_C
RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power.
Check the power supply voltage.
Voltage as rated?
NO
Correct the power supply.
YES
Check No. 18
Check the discharge pressure.
OK?
NO
Replace the stop valve.
YES
Check the connection.
Electrical
components or
compressor harnesses
connected as
specified?
NO
Reconnect the electrical
components or compressor
harnesses as specified.
YES
Turn on the power.
Check the electrolytic capacitor
voltage.
320 ± 50 VDC?
NO
Replace the outdoor unit
PCB.
YES
Turn off the power. Disconnect the
harnesses U, V, and W.
Check No.15
Check with the inverter analyzer.
Any LED OFF?
NO
∗ Inverter analyzer:
RSUK0917C
YES
Correct the power supply or
replace the outdoor unit
PCB.
Replace the compressor.
(R18329)
112
Service Diagnosis
SiBE06-708_C
Troubleshooting
4.21 DC Voltage / Current Sensor Abnormality (25/35 Class
Only)
Error Code
H8
Method of Error
Detection
DC voltage or DC current sensor abnormality is identified based on the compressor running
frequency and the input current.
Error Decision
Conditions
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
„ Defective outdoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the outdoor unit PCB.
Service Diagnosis
113
Troubleshooting
SiBE06-708_C
4.22 CT or Related Abnormality (RK(X)S50F2V1B,
RK(X)S50G2V1B, RXS50J2V1B Only)
Error Code
H8
Method of Error
Detection
A CT or related error is detected by checking the compressor running frequency and CTdetected input current.
Error Decision
Conditions
„ The compressor running frequency is more than A Hz, and the CT input current is less than
B A.
A (Hz)
55
B (A)
0.5
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
114
„
„
„
„
Defective power module
Broken or disconnected wiring
Defective reactor
Defective outdoor unit PCB
Service Diagnosis
SiBE06-708_C
Troubleshooting
Troubleshooting
Caution
Check No.15
Refer to P.130
Check No.21
Refer to P.136
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power and turn it on
again.
Start operation.
∗ Running current
as shown at right
with relay cable 1
or 2?
YES
Current
(guideline)
Replace the outdoor unit
PCB.
Capacitor charged when
the indoor unit or outdoor
unit main relay turns on
NO
Rising with increasing
frequency
Check No. 21
Check the capacitor voltage.
2 sec
320 ± 50 VDC?
Time
YES Turn off the power. Disconnect the
harnesses U, V, and W.
NO
Measure the rectifier input voltage.
∗ Inverter analyzer:
RSUK0917C
Check No.15
Check with the inverter analyzer.
Any LED OFF?
YES
Correct the power supply or
replace the outdoor unit PCB.
NO
Turn off the power and reconnect
the harnesses. Then turn on the
power again and restart operation.
Compressor running?
NO
Voltage
within the allowable
range (Power supply
voltage ± 15%)?
NO
YES
YES
Replace the outdoor unit
PCB.
Replace the compressor.
Replace the outdoor unit
PCB.
Check the power supply
voltage.
(R18341)
Service Diagnosis
115
Troubleshooting
SiBE06-708_C
4.23 Thermistor or Related Abnormality (Outdoor Unit)
Error Code
H9, J3, J6, P4
Method of Error
Detection
This fault is identified based on the thermistor input voltage to the microcomputer.
A thermistor fault is identified based on the temperature sensed by each thermistor.
Error Decision
Conditions
„ The thermistor input voltage is above 4.96 V or below 0.04 V with the power on.
„ J3 error is judged if the discharge pipe temperature is lower than the heat exchanger
temperature.
Supposed
Causes
„ Disconnection of the connector for the thermistor
„ Defective thermistor corresponding to the error code
„ Defective heat exchanger thermistor in the case of J3 error (outdoor heat exchanger
thermistor in cooling operation, or indoor heat exchanger thermistor in heating operation)
„ Defective outdoor unit PCB
Troubleshooting
In case of “P4” for RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B,
RXS25/35K2V1B, RXS25K3V1B, 50 class
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the outdoor unit PCB.
P4 : Radiation fin thermistor
116
Service Diagnosis
SiBE06-708_C
Troubleshooting
Troubleshooting
„ In case of RK(X)S25/35F2V1B
„ In case of “H9” “J3” “J6” for RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9,
RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B, 50 class
Check No.01
Refer to P.126
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn on the power again.
Error displayed
again on remote
controller?
NO
Reconnect the connectors
or thermistors.
YES
Check No. 01
Check the thermistor resistance
value.
Normal?
J3 error: the discharge
pipe temperature is
lower than the heat
exchanger temperature.
Cooling: Outdoor heat
exchanger
temperature
Heating: Indoor heat
exchanger
temperature
NO
Replace the defective
thermistor(s) of the following
thermistors.
∗ Outdoor temperature
thermistor
∗ Discharge pipe thermistor
∗ Outdoor heat exchanger
thermistor
∗ Radiation fin thermistor
YES
Check No. 01
Check the indoor heat exchanger
thermistor resistance value in the
heating operation.
Indoor heat
exchanger thermistor
functioning?
NO
Replace the indoor heat
exchanger thermistor.
YES
Replace the outdoor unit
PCB.
(R17489)
H9 : Outdoor temperature thermistor
J3 : Discharge pipe thermistor
J6 : Outdoor heat exchanger thermistor
P4 : Radiation fin thermistor
Service Diagnosis
117
Troubleshooting
SiBE06-708_C
4.24 Electrical Box Temperature Rise
Error Code
L3
Method of Error
Detection
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
compressor off.
Error Decision
Conditions
„ With the compressor off, the radiation fin temperature is above A°C.
„ The error is cleared when the radiation fin temperature drops below B°C.
„ To cool the electrical components, the outdoor fan starts when the radiation fin temperature
rises above C°C and stops when it drops below B°C.
RK(X)S25/35F2V1B, RK(X)S25/35G2V1B
RK(X)S25/35G2V1B9, RXS25/35J2V1B
RXS25/35K2V1B, RXS25K3V1B
RK(X)S50F2V1B, RK(X)S50G2V1B
RXS50J2V1B
RXS50K2V1B
Supposed
Causes
118
„
„
„
„
„
A (°C)
B (°C)
C (°C)
80
70
80
98
75
83
95
80
85
122
64
113
Defective outdoor fan motor
Short circuit
Defective radiation fin thermistor
Disconnection of connector
Defective outdoor unit PCB
Service Diagnosis
SiBE06-708_C
Troubleshooting
Check No.01
Refer to P.126
Troubleshooting
RK(X)S25/35F2V1B
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
WARNING
Turn off the power and turn it on
again.
To cool the electrical components,
the outdoor fan starts when the
radiation fin temperature rises
above C˚C and stops when it
drops below B˚C.
Check No.17
Refer to P.133
YES
Error again or outdoor
fan activated?
Check No.19
Refer to P.134
NO
Check the radiation fin
temperature.
Above A˚C?
NO
Replace the outdoor unit
PCB.
YES
Check No. 01
Check the thermistor resistance
value.
∗ Radiation fin thermistor
As described in the
characteristic chart?
NO
Replace the radiation fin
thermistor.
YES
Check No. 19
Check the outdoor fan or
related.
NG
Replace the fan motor.
Correct the connectors and
the fan motor lead wire.
Replace the outdoor unit
PCB.
OK
Too dirty
Radiation fin dirty?
Clean up the radiation fin.
Slightly dirty
Check No. 17
Check the installation condition.
(R18412)
RK(X)S25/35F2V1B
Service Diagnosis
A (°C)
B (°C)
C (°C)
80
70
80
119
Troubleshooting
Troubleshooting
SiBE06-708_C
RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B,
RXS25K3V1B, 50 class
Caution
Check No.17
Refer to P.133
Check No.19
Refer to P.134
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
WARNING
To cool the electrical components,
the outdoor fan starts when the
radiation fin temperature rises
above C ˚C and stops when it
drops below B ˚C.
Turn off the power and turn it on
again.
Error again or outdoor
fan activated?
YES
NO
Check the radiation fin
temperature.
NO
Above A ˚C?
Replace the outdoor unit
PCB.
YES
Check No. 19
Check the outdoor fan or
related.
NG
Replace the outdoor fan
motor.
Correct the connectors
and fan motor lead wire.
Replace the outdoor unit
PCB.
OK
Radiation fin dirty?
Too dirty
Clean up the radiation fin.
Slightly dirty
Check No. 17
Check the installation condition.
(R14444)
RK(X)S25/35G2V1B
RK(X)S25/35G2V1B9
RXS25/35J2V1B
RXS25/35K2V1B
RXS25K3V1B
RK(X)S50F2V1B
RK(X)S50G2V1B
RXS50J2V1B
RXS50K2V1B
120
A (°C)
B (°C)
C (°C)
80
70
80
98
75
83
95
80
85
122
64
113
Service Diagnosis
SiBE06-708_C
Troubleshooting
4.25 Radiation Fin Temperature Rise
Error Code
L4
Method of Error
Detection
A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
compressor on.
Error Decision
Conditions
„
„
„
„
Supposed
Causes
Service Diagnosis
If the radiation fin temperature with the compressor on is above A°C.
The error is cleared when the radiation fin temperature drops below B°C.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
A (°C)
B (°C)
RK(X)S25/35F2V1B, RK(X)S25/35G2V1B
RK(X)S25/35G2V1B9, RXS25/35J2V1B
RXS25/35K2V1B, RXS25K3V1B
90
85
98
78
RK(X)S50F2V1B, RK(X)S50G2V1B
RXS50J2V1B
RXS50K2V1B
105
99
85
56
„
„
„
„
„
„
Defective outdoor fan motor
Short circuit
Defective radiation fin thermistor
Disconnection of connector
Defective outdoor unit PCB
Silicon grease is not applied properly on the radiation fin after replacing the outdoor unit
PCB.
121
Troubleshooting
Troubleshooting
SiBE06-708_C
RK(X)S25/35F2V1B
Caution
Check No.01
Refer to P.126
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power and turn it on
again to start the system.
Check No.17
Refer to P.133
Error displayed again?
Check No.19
Refer to P.134
YES
Has the PCB been
replaced?
NO
YES
NO
Check if the silicon grease
applied properly on the
radiation fin. If not, apply the
silicon grease.
Check the radiation fin
temperature.
Above A˚C?
NO
YES
Check the power transistor
and the radiation fin for
looseness. If they are found
to be fit tightly, replace the
outdoor unit PCB or the
power transistor.
Check No. 01
Check the thermistor resistance
value.
∗ Radiation fin thermistor
Thermistor as
specified in its characteristic
chart?
NO
Replace the radiation fin
thermistor.
YES
Check No. 19
Check the outdoor fan or
related.
NG
OK
Too dirty
Radiation fin dirty?
Replace the fan motor.
Correct the connectors and
fan motor lead wire.
Replace the outdoor unit
PCB.
Clean up the radiation fin.
Slightly dirty
Check No. 17
Check the installation condition.
RK(X)S25/35F2V1B
Note:
122
(R18359)
A (°C)
90
Refer to “Silicon Grease on Power Transistor / Diode Bridge” on page 150 for detail.
Service Diagnosis
SiBE06-708_C
Troubleshooting
Troubleshooting
RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B,
RXS25K3V1B, 50 class
Caution
Check No.17
Refer to P.133
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Turn off the power and turn it on
again to start the system.
Check No.19
Refer to P.134
Error displayed again?
YES
Has the PCB been
replaced?
NO
YES
NO
Check if silicon grease is
applied properly on the
radiation fin. If not, apply
the silicon grease.
Check the radiation fin
temperature.
Above A ˚C?
NO
Replace the outdoor unit
PCB.
YES
Check No. 19
Check the outdoor fan or
related.
NG
Replace the outdoor fan
motor.
Correct the connectors and
fan motor leads.
Replace the outdoor unit
PCB.
OK
Radiation fin dirty?
Too dirty
Clean up the radiation fin.
Slightly dirty
Check No. 17
Check the installation condition.
RK(X)S25/35G2V1B
RK(X)S25/35G2V1B9
RXS25/35J2V1B
RXS25/35K2V1B
RXS25K3V1B
RK(X)S50F2V1B
RK(X)S50G2V1B
RXS50J2V1B
RXS50K2V1B
Note:
Service Diagnosis
(R18320)
A (°C)
90
98
105
85
Refer to “Silicon Grease on Power Transistor / Diode Bridge” on page 150 for detail.
123
Troubleshooting
SiBE06-708_C
4.26 Output Overcurrent Detection
Error Code
L5
Method of Error
Detection
An output overcurrent is detected by checking the current that flows in the inverter DC section.
Error Decision
Conditions
„ A position signal error occurs while the compressor is running.
„ A rotation speed error occurs while the compressor is running.
„ An output overcurrent signal is fed from the output overcurrent detection circuit to the
microcomputer.
„ If the error repeats, the system is shut down.
„ Reset condition: Continuous run for about 11 minutes (25/35 class) or 5 minutes (50 class)
without any other error
Supposed
Causes
124
„
„
„
„
„
„
„
Poor installation condition
Closed stop valve
Defective power module
Wrong internal wiring
Abnormal power supply voltage
Defective outdoor unit PCB
Defective compressor
Service Diagnosis
SiBE06-708_C
Troubleshooting
Troubleshooting
Caution
Check No.15
Refer to P.130
Check No.17
Refer to P.133
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
∗ An output overcurrent may result from wrong internal wiring. If the system is interrupted by an output
overcurrent after the wires have been disconnected and reconnected for part replacement, check the
wiring again.
Check No. 17
Check the installation condition.
NO
Stop valve fully open?
Check No.18
Refer to P.133
Check No.22
Refer to P.137
Fully open the stop valve.
YES
Turn off the power and turn it on
again to start the system. See if the
same error occurs.
Error again?
NO Monitor the power supply voltage,
discharge and suction pressures,
and other factors for a long term.
YES
Possible causes
∗ Momentary fall of power supply
voltage
∗ Compressor overload
∗ Short circuit
Turn off the power and disconnect
the harnesses U, V, and W.
Check the connectors and
other components.
∗ Inverter analyzer:
RSUK0917C
Check No.15
Check with the inverter analyzer.
Any LED off?
Keep on using.
YES
Correct the power supply
or replace the outdoor unit
PCB.
NO
Check No. 22
Check the power module.
Normal?
NO
Replace the outdoor unit
PCB.
YES
Turn off the power, and reconnect
the harnesses. Turn on the power
again and start operation.
Check the power supply voltage.
Voltage as rated?
NO
Correct the power supply.
YES
Short circuit or
wire breakage between
compressor's coil
phases?
YES
Replace the compressor.
NO
Check No. 18
Check the discharge pressure.
(R18321)
Service Diagnosis
125
Check
SiBE06-708_C
5. Check
5.1
Thermistor Resistance Check
Check No.01
Disconnect the connectors of the thermistors from the PCB, and measure the resistance of
each thermistor using tester.
The data is for reference purpose only.
Thermistor temperature (°C)
–20
Resistance (kΩ)
197.8
–15
–10
148.2
112.1
–5
0
85.60
65.93
5
10
51.14
39.99
15
20
31.52
25.02
25
30
20.00
16.10
35
40
13.04
10.62
45
50
8.707
7.176
(R25°C = 20 kΩ, B = 3950 K)
(kΩ)
150
100
50
–15
0
15
30
45
(˚C)
(R11905)
Tester
Resistance range
(R18296)
Room temperature
thermistor
Tester
(R17417)
„ When the room temperature thermistor is soldered on the sensor PCB, remove the sensor
PCB from the control PCB to measure the resistance.
„ When the connector of indoor heat exchanger thermistor is soldered on the PCB, remove
the thermistor and measure the resistance.
126
Service Diagnosis
SiBE06-708_C
5.2
Check
Fan Motor Connector Output Check
Check No.02
1.
2.
3.
4.
5.
Check the connection of connector.
Check the motor power supply voltage output (pins 4 - 7).
Check the motor control voltage (pins 4 - 3).
Check the rotation command voltage (pins 4 - 2).
Check the rotation pulse (pins 4 - 1).
S1
7
6
5
4
3
2
1
Motor power supply voltage (310 ~ 340 VDC)
Unused
Unused
GND
Motor control voltage (15 VDC)
Rotation command voltage (1~ 5 VDC)
Rotation pulse input
(R12404)
5.3
Power Supply Waveforms Check
Check No.11
Measure the power supply waveform between No. 1 and No. 2 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
(R1444)
(R1736)
Service Diagnosis
127
Check
5.4
SiBE06-708_C
Electronic Expansion Valve Check
Check No.12
Conduct the followings to check the electronic expansion valve (EV).
1. Check to see if the EV connector is correctly connected to the PCB.
2. Turn the power off and on again, and check to see if the EV generates a latching sound.
3. If the EV does not generate a latching sound in the above step 2, disconnect the connector
and check the continuity using a tester.
4. Check the continuity between the pins 1 - 6, 3 - 6, 2 - 5, 4 - 5 (between the pins 1 - 6, 2 - 6, 3 - 6,
4 - 6 for the harness 5P models). If there is no continuity between the pins, the EV coil is faulty.
Harness 5P
Harness 6P
S20
6P Connector
1 2 3 4 5 6
Check
1-6
3-6
2-5
4-5
S20
(5)
6P Connector
1 2 3 4 5 6
(R16385)
1-6
2-6
Check
3-6
4-6
(R16386)
5. If the continuity is confirmed in step 3, the outdoor unit PCB is faulty.
Note:
128
Please note that the latching sound varies depending on the valve type.
Service Diagnosis
SiBE06-708_C
5.5
Check
Four Way Valve Performance Check
Check No.13
Turn the power off and then on
again.
Start heating operation.
S80
voltage at 220 - 240
VAC 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
1000 ~ 2000 Ω?
NO
Replace the four way valve
coil.
YES
Replace the four way valve.
(R15737)
(Fig. 1)
Voltage at S80
220 - 240 VAC
Time
Compressor
ON
5.6
(R11904)
Inverter Units Refrigerant System Check
Check No.14
Refrigerant system check
Is the
discharge pipe
thermistor disconnected
from the holder?
YES
Reconnect the thermistor.
NO
Check for refrigerant leakage.
See the service diagnosis on
refrigerant shortage (U0).
Replace the refrigerant.
(R15833)
Service Diagnosis
129
Check
5.7
SiBE06-708_C
Inverter Analyzer Check
Check No.15
„ Characteristics
Inverter analyzer: RSUK0917C
If an abnormal stop occurs due to compressor startup failure or overcurrent output when using
an inverter unit, it is difficult to judge whether the stop is caused by the compressor failure or
some other failure (main PCB, power module, etc.). The inverter analyzer makes it possible to
judge the cause of trouble easily and securely. (Connect an inverter analyzer as a quasicompressor instead of compressor and check the output of the inverter)
„ Operation Method
Step 1
Be sure to turn the power off.
Step 2
Install an inverter analyzer instead of a compressor.
Note:
Make sure the charged voltage of the built-in smoothing electrolytic capacitor drops to 10
VDC or below before carrying out the service work.
(1) Remove the terminals from
the compressor.
(2) Connect the terminals to the
terminals of the inverter
analyzer.
Compressor
Inverter analyzer
Be careful not to let the terminals (U,V,W)
touch each other. Otherwise, high voltage
is applied.
(R18322)
Reference:
If the terminals of the compressor are not FASTON terminals (difficult to remove the wire on
the terminals), it is possible to connect wires available on site to the outdoor unit from output
side of PCB. (Do not connect them to the compressor at the same time, otherwise it may
result in incorrect detection.)
Step 3
Activate the power transistor test operation from the outdoor unit.
1) Press the forced cooling operation [ON/OFF] switch for 5 seconds.
(Refer to page 142 for the position.)
→ Power transistor test operation starts.
130
Service Diagnosis
SiBE06-708_C
Check
„ Diagnose method (Diagnose according to 6 LEDs lighting status.)
(1) If all the LEDs are lit uniformly, the compressor is defective.
→ Replace the compressor.
(2) If the LEDs are not lit uniformly, check the power module.
→ Refer to Check No.22.
(3) If NG in Check No.22, replace the power module.
(Replace the main PCB. The power module is united with the main PCB.)
If OK in Check No.22, check if there is any solder cracking on the PCB.
(4) If any solder cracking is found, replace the PCB or repair the soldered section.
If there is no solder cracking, replace the PCB.
Caution
(1) When the output frequency is low, the LEDs blink slowly. As the output frequency increases,
the LEDs blink quicker. (The LEDs look like they are lit.)
(2) On completion of the inverter analyzer diagnosis, be sure to re-crimp the FASTON terminals.
Otherwise, the terminals may be burned due to loosening.
Direction of crimp
This size is shortened
by the crimp.
FASTON terminal
(R15292)
5.8
Rotation Pulse Check on the Outdoor Unit PCB
Check No.16
RK(X)S25/35F2V1B, RK(X)S25/35G2V1B, 50 class
Make sure that the voltage of 320 ± 30 V is applied.
1. Set operation off and power off. Disconnect the connector S70.
2. Check that the voltage between the pins 4 - 7 is 320 VDC.
3. Check that the control voltage between the pins 3 - 4 is 15 VDC.
4. Check that the rotation command voltage between the pins 2 - 4 is 0 ~ 15 VDC.
5. Keep operation off and power off. Connect the connector S70.
6. Check whether 2 pulses (0 ~ 15 VDC) are output at the pins 1 - 4 when the fan motor is
rotated 1 turn by hand.
When the fuse is melted, check the outdoor fan motor for proper function.
If NG in step 2 → Defective PCB
→ Replace the outdoor unit PCB.
If NG in step 4 → Defective Hall IC → Replace the outdoor fan motor.
If OK in both steps 2 and 4
→ Replace the outdoor unit PCB.
PCB
S70
1
Actual rotation pulse output (0 ~ 15 VDC)
2
Rotation command pulse input (0 ~ 15 VDC)
3
15 VDC
4
5
6
7
320 VDC
(R10811)
Service Diagnosis
131
Check
SiBE06-708_C
RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B
1. Check that the voltage between the pins 10 - 11 is 15 VDC.
2. Check if the Hall IC generates the rotation pulse (0 ~ 15 VDC) 4 times between the pins 10 12, 10 - 13, when the fan motor is manually rotated once.
S70
13
HV (Hall IC)
12
HU (Hall IC)
11
15 VDC
10
9
Free pin
8
Free pin
Phase W
7
6
Free pin
5
Free pin
Phase V
4
3
Free pin
2
Free pin
1
Phase U
(R11907)
132
Service Diagnosis
SiBE06-708_C
5.9
Check
Installation Condition Check
Check No.17
Installation condition check
Check the allowable
dimensions of the air
suction and
discharge area.
NG
Change the installation
location or direction.
OK
Is the discharged air
short-circuited?
YES
Change the installation
location or direction.
NO
Is the outdoor heat
exchanger very dirty?
YES
Clean the outdoor heat
exchanger.
NO
Is the airflow blocked by
obstacles or winds
blowing in the opposite
direction?
YES
NO
Change the installation
location or direction.
Check the outdoor temperature.
(The outdoor temperature
should be within the operation
range.)
(R17537)
5.10 Discharge Pressure Check
Check No.18
Discharge pressure check
High?
NO
Replace the compressor.
YES
Is the stop valve open?
NO
Open the stop valve.
YES
Is the connection pipe
deformed?
YES
Replace the pipe installed at
the site.
NO
Is the air
filter or indoor / outdoor
heat exchanger
dirty?
Not dirty
Dirty
Clean the dirty air filter or
indoor / outdoor heat
exchanger.
Replace the compressor.
(R15738)
Service Diagnosis
133
Check
SiBE06-708_C
5.11 Outdoor Fan System Check
Check No.19
DC motor
Check the outdoor fan system.
Fan motor
lead wire connector
disconnected?
NO
Outdoor fan running?
YES
YES
Reconnect the connector.
NO
Go to Check No. 16.
Outdoor fan system is functioning.
(R15001)
5.12 Main Circuit Short Check
Check No.20
25/35 class, RXS50K2V1B only
Note:
Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx.
0 V before checking.
Š Measure the resistance between the pins of the DB1 referring to the table below.
Š If the resistance is ∞ or less than 1 kΩ, short circuit occurs on the main circuit.
Negative (–) terminal of
tester (positive terminal
(+) for digital tester)
Positive (+) terminal of
tester (negative terminal
(–) for digital tester)
Resistance is OK.
Resistance is NG.
~ (2, 3)
+ (4)
~ (2, 3)
– (1)
+ (4)
~ (2, 3)
– (1)
~ (2, 3)
several kΩ
~ several MΩ
0 Ω or ∞
∞
∞
0
0
several kΩ
~ several MΩ
0 Ω or ∞
„ RK(X)S25/35F2V1B
1
2
3
4
– ~ ~ +
+ –
Tester
(R12412)
134
Service Diagnosis
SiBE06-708_C
Check
„ RK(X)S25/35G2V1B
4
3
2
1
+ ~ ~ –
– +
Tester
(R12411)
2
3
4
– ~ ~ +
1
– +
„ RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B
Tester
(R12035)
Service Diagnosis
135
Check
SiBE06-708_C
„ RXS50K2V1B
4
3
2
1
– ~ ~ +
– +
Tester
(R14700)
5.13 Capacitor Voltage Check
Check No.21
RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B only
Before this check, be sure to check the main circuit for short circuit.
With the circuit breaker still on, measure the voltage according to the drawing of the model in
question. Be careful never to touch any live parts.
Multimeter
(DC voltage range)
(R18183)
136
Service Diagnosis
SiBE06-708_C
Check
5.14 Power Module Check
Check No.22
Note:
Check to make sure that the voltage between (+) and (–) of the power module is approx. 0 V
before checking.
Š Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the
connector, press the protrusion on the connector.
Š Follow the procedure below to measure resistance between the terminals of the power
module and the terminals of the compressor with a multi-tester. Evaluate the measurement
results referring to the following table.
Negative (–) terminal of
tester (positive terminal
(+) for digital tester)
Power module
(+)
UVW
Power module
(–)
UVW
Positive (+) terminal of
tester (negative terminal
(–) for digital tester)
Resistance is OK.
UVW
Power module
(+)
UVW
Power module
(–)
Resistance is NG.
several kΩ ~ several MΩ
0 Ω or ∞
„ RK(X)S25/35F2V1B
Power module
(R16389)
Service Diagnosis
137
Check
SiBE06-708_C
„ RK(X)S25/35G2V1B
Power module
(R18360)
„ RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B
Power module
(R16069)
138
Service Diagnosis
SiBE06-708_C
Check
„ RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B
Power module
(R18390)
„ RXS50K2V1B
Power module
(R16692)
Service Diagnosis
139
SiBE06-708_C
Part 7
Trial Operation and
Field Settings
1.
2.
3.
4.
Pump Down Operation........................................................................141
Forced Cooling Operation ...................................................................142
Trial Operation ....................................................................................144
Field Settings ......................................................................................145
4.1
4.2
4.3
4.4
When 2 Units are Installed in 1 Room..................................................145
Model Type Setting ..............................................................................146
Facility Setting Jumper (cooling at low outdoor temperature) ..............146
Jumper and Switch Settings.................................................................149
5. Silicon Grease on Power Transistor / Diode Bridge............................150
140
Trial Operation and Field Settings
SiBE06-708_C
Pump Down Operation
1. Pump Down Operation
Outline
In order to protect the environment, be sure to conduct pump down operation when relocating or
disposing the unit.
Detail
1) Remove the valve caps from the liquid stop valve and the gas stop valve.
2) Carry out forced cooling operation.
3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal wrench.
4) After 2 to 3 minutes, close the gas stop valve and stop the forced cooling operation.
Hexagonal
wrench
Close
Liquid stop valve
Gas stop valve
Service port
Valve cap
(R13628)
Refer to page 142 for forced cooling operation.
Trial Operation and Field Settings
141
Forced Cooling Operation
SiBE06-708_C
2. Forced Cooling Operation
Item
Conditions
Forced Cooling
The forced cooling operation is allowed when both of the following conditions are
met.
1) The outdoor unit is not abnormal and not in the 3-minute standby mode.
2) The outdoor unit is not operating.
Start
Command
frequency
End
Others
The forced cooling operation starts when any of the following conditions is fulfilled.
1) Press the forced cooling operation ON/OFF button (SW1) on the indoor unit for
5 seconds.
2) Press the forced cooling operation ON/OFF switch (SW1) on the outdoor unit.
RK(X)S25/35F2V1B, RK(X)S25/35G2V1B: 68 Hz
RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B: 58 Hz
50 class: 66 Hz
The forced cooling operation ends when any of the following conditions is fulfilled.
1) The operation ends automatically after 15 minutes.
2) Press the forced cooling operation ON/OFF button (SW1) on the indoor unit
again.
3) Press the [ON/OFF] button on the remote controller.
4) Press the forced cooling operation ON/OFF switch (SW1) on the outdoor unit.
Protection functions have priority over all other functions during forced cooling
operation.
Indoor Unit
ON/OFF button
(SW1)
(R14184)
Outdoor Unit: RK(X)S25/35F2V1B, RK(X)S25/35G2V1B
1 2
3
Push
here
Screwdriver
(R18372)
Outdoor Unit: RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B
1
2
3
Terminal board
Screwdriver
Push here
142
(R18256)
Trial Operation and Field Settings
SiBE06-708_C
Forced Cooling Operation
Outdoor Unit: RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B
S102
S2
ON
A B CD
LED-A
SW4
Forced cooling
operation
ON/OFF switch
SW1
(R14963)
Outdoor Unit: RXS50K2V1B
Forced cooling operation
ON/OFF switch (SW1)
1
2
3
Push
Screwdriver
Caution
(R18725)
When pressing the button, do not touch the terminal board. It has a high voltage and may cause
electric shock.
Trial Operation and Field Settings
143
Trial Operation
SiBE06-708_C
3. Trial Operation
Outline
1. Measure the power supply voltage and make sure that it falls within the specified range.
2. Trial operation should be carried out in either cooling or heating operation.
In cooling operation, select the lowest programmable temperature (18°C); in heating
operation, select the highest programmable temperature (30°C).
Š Trial operation may be disabled in either operation mode depending on the room
temperature.
Š After trial operation is complete, set the temperature to a normal level.
(26°C ~ 28°C in cooling, 20°C ~ 24°C in heating)
Š For protection, the system does not start for 3 minutes after it is turned off.
3. Carry out the trial operation in accordance with the operation manual to ensure that all
functions and parts, such as flap movement, are working properly.
Note:
„ The air conditioner requires a small amount of power in 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 backs up the
operation mode. The system then restarts operation with the previous operation mode when
the circuit breaker is restored.
Detail
ARC452 Series
(1) Press the [ON/OFF] button to turn on the system.
(2) Press the both of [TEMP] buttons and the [MODE] button at the same time.
(3) Press the [MODE] button twice.
(T appears on the display to indicate that trial operation is selected.)
(4) Press the [MODE] button and select the operation mode.
(5) Trial operation terminates in approx. 30 minutes and switches into normal mode. To quit trial
operation, press the [ON/OFF] button.
(3)
(2)
(2)
(2) (3) (4)
144
(1) (5)
(R9675)
Trial Operation and Field Settings
SiBE06-708_C
Field Settings
4. Field Settings
4.1
When 2 Units are Installed in 1 Room
Outline
When 2 indoor units are installed in 1 room, 1 of the 2 indoor units and the corresponding
wireless remote controller can be set for different addresses.
Both the indoor unit PCB and the wireless remote controller need alteration.
Indoor Unit PCB
1) Remove the front grille.
2) Lift the sensor PCB fixing plate and remove the front shield plate.
3) Disconnect the connectors [S1] [S41] [S42].
4) Remove the electric box (1 screw).
5) Pull out the indoor heat exchanger thermistor.
6) Remove the shield plate (8 tabs).
7) Cut the address setting jumper JA on the indoor unit PCB.
5) Indoor heat exchanger
thermistor
Connector [S42]
Connector [S41]
3)
Connector [S1]
4) Remove the screw.
JA Address
EXIST
1
CUT
2
JC
JA
JB
2)
Sensor
PCB fixing
Front shield
plate
plate
6) Shield plate
(R17290)
Caution
Wireless Remote
Controller
Replace the PCB if you accidentally cut a wrong jumper.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
„ Cut the address setting jumper.
Jumper
ADDRESS
EXIST 1
CUT
2
Trial Operation and Field Settings
(R13525)
145
Field Settings
4.2
SiBE06-708_C
Model Type Setting
„ The remote controller is common to the heat pump model and cooling only model. Set the
DIP switch to the right position as shown in the illustration if the position of the DIP switch is
wrong.
Heat pump model
Cooling only model
DIP switch
DIP switch
(R18201)
4.3
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).
25/35 Class
You can expand the operation range to –15°C by cutting the jumper on the outdoor unit PCB. If
the outdoor temperature falls to –20°C or lower, the operation stops. If the outdoor temperature
rises, the operation starts again.
„ RK(X)S25/35F2V1B
Main PCB
S90
S70
PCB
S80
Cut the jumper J8.
J1
J3
J4
J5
J6
J7
J8
.
(R18373)
„ RK(X)S25/35G2V1B
Main PCB
S50
S1
S90
J4
J8
J9
PCB
Cut the jumper J8.
S10
S20
(R18374)
146
Trial Operation and Field Settings
SiBE06-708_C
Field Settings
„ RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B
Main PCB
J5
J4
J3
S40
S70
Cut the jumper J4.
S90
S2
(R18253)
50 Class
„ RKS50F2V1B, RK(X)S50G2V1B, RXS50J2V1B
You can expand the operation range to –15°C by cutting the jumper on the outdoor unit PCB. If
the outdoor temperature falls to –20°C or lower, the operation stops. If the outdoor temperature
rises, the operation starts again.
S102
S2
ON
A B CD
LED-A
Turn on the
switch SW4-B.
SW4
SW1
(R12186)
Trial Operation and Field Settings
147
Field Settings
SiBE06-708_C
„ RXS50K2V1B
You can expand the operation range to –10°C by cutting the jumper (J6) on the outdoor unit
PCB. If the outdoor temperature falls to –18°C or lower, the operation stops. If the outdoor
temperature rises, the operation starts again.
J5
J7
J8
J6
GND
Cut the jumper J6.
(R18276)
148
Caution
1. If the outdoor unit is installed where the outdoor 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 condensation from the indoor unit outlet vent.
4. Cutting the jumper sets the indoor fan tap to the highest position. (25/35 class,
RXS50K2V1B)
5. Use the indoor unit at the highest level of airflow rate. (RKS50F2V1B, RK(X)S50G2V1B,
RXS50J2V1B)
Caution
Replace the PCB if you accidentally cut a wrong jumper.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Trial Operation and Field Settings
SiBE06-708_C
4.4
Field Settings
Jumper and Switch Settings
Indoor Unit
Function
Switch /
Jumper
Fan speed setting when
compressor stops for
thermostat OFF. (effective only
in cooling operation)
JB
Power failure recovery function
JC
Upward airflow limit setting
SW2-4
Switch: OFF
Switch: ON
Jumper: connected
Jumper: cut
(factory set)
Fan speed setting ; Fan speed setting; “0” (The fan
Remote controller
stops.)
setting
Auto-restart
Exposed or half
embedded
installation
The unit does not resume
operation after recovering from a
power failure. Timer settings are
cleared.
Set the switch to ON position
when you install the indoor unit
embedded in the wall.
For the location of the jumper and the switch, refer to page 26, 27.
Outdoor Unit
Function
Switch / Jumper
Improvement 25/35 class → J5
of defrost
RK(X)S50F2V1B→ SW4-C
performance RK(X)S50G2V1B→ SW4-C
RXS50J2V1B → SW4-C
RXS50K2V1B → J8
Switch: OFF
Switch: ON
Jumper: connected
Jumper: cut
(factory set)
Standard control
Reinforced control (ex.
The frequency increases,
the duration time of
defrost lengthens.)
For the location of the jumper and the switch, refer to page 28, 30, 32, 34, 36.
Caution
Replace the PCB if you accidentally cut a wrong jumper.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Trial Operation and Field Settings
149
Silicon Grease on Power Transistor / Diode Bridge
SiBE06-708_C
5. Silicon Grease on Power Transistor / Diode
Bridge
Outline
Apply the specified silicon grease to the heat radiation part of a power transistor / diode bridge
when you replace an outdoor unit PCB. The silicon grease encourages the heat radiation of a
power transistor / diode bridge.
Detail
1.
2.
3.
4.
Wipe off the old silicon grease completely.
Apply the silicon grease evenly. See the illustrations below for examples of application.
Tighten the screws of the power transistor / diode bridge.
Make sure that the heat radiation parts are firmly contacted to the radiation fin.
Note: Smoke emission may be caused by bad heat radiation when the silicon grease is not
appropriately applied.
„ OK: Evenly applied
Power transistor
(or diode bridge)
PCB
Radiation
fin
Silicon grease
(R18015)
„ NG: Not evenly applied
(R18016)
„ NG: Foreign matter is stuck.
Foreign matter
150
(R18017)
Trial Operation and Field Settings
SiBE06-708_C
Part 8
Appendix
1. Piping Diagrams..................................................................................152
1.1 Indoor Unit............................................................................................152
1.2 Outdoor Unit .........................................................................................152
2. Wiring Diagrams..................................................................................156
2.1 Indoor Unit............................................................................................156
2.2 Outdoor Unit .........................................................................................157
3. Removal Procedure (Booklet No.) ......................................................160
Appendix
151
Piping Diagrams
SiBE06-708_C
1. Piping Diagrams
1.1
Indoor Unit
FVXS25/35FV1B
FVXS50FV1B
INDOOR UNIT
INDOOR UNIT
MUFFLER ASSY
7.0CuT
6.4CuT
HEAT EXCHANGER
MUFFLER ASSY
7.0CuT
THERMISTOR
ON HEAT EXCH.
M
M
6.4CuT
9.5CuT
FIELD PIPING
(9.5CuT)
FIELD PIPING
(6.4CuT)
TURBO FAN FAN MOTOR
FIELD PIPING
(12.7CuT)
9.5CuT
REFRIGERANT FLOW
HEAT EXCHANGER
THERMISTOR
ON HEAT EXCH.
6.4CuT
TURBO FAN FAN MOTOR
FIELD PIPING
(6.4CuT)
6.4CuT
6.4CuT
6.4CuT
6.4CuT
6.4CuT
6.4CuT
6.4CuT
6.4CuT
6.4CuT
REFRIGERANT FLOW
COOLING
COOLING
HEATING
HEATING
4D056137B
1.2
4D056138D
Outdoor Unit
1.2.1 Cooling Only
RKS25/35F2V1B
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
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
3D047318G
152
Appendix
SiBE06-708_C
Piping Diagrams
RKS25/35G2V1B, RKS25/35G2V1B9
OUTDOOR UNIT
OUTDOOR TEMPERATURE
THERMISTOR
9.5CuT
7.0CuT HEAT EXCHANGER
7.0CuT
4.8CuT MUFFLER
WITH
FILTER
M
ELECTRONIC
EXPANSION
VALVE
EV
φ.4.0 × ID.2.0CuT
HEAT EXCHANGER
THERMISTOR
4.8CuT
6.4CuT 6.4CuT
MUFFLER
WITH
FILTER
9.5CuT
PROPELLER FAN
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
9.5CuT
COMPRESSOR
MUFFLER MUFFLER
ACCUMULATOR
GAS STOP
VALVE
FIELD PIPING
(6.4CuT)
FIELD PIPING
(9.5CuT)
REFRIGERANT FLOW
COOLING
3D059589G
RKS50F2V1B, RKS50G2V1B
OUTDOOR UNIT
HEAT EXCHANGER
7.9CuT
OUTDOOR AIR TEMPERATURE
THERMISTOR
7.9CuT
7.9CuT
7.9CuT
7.9CuT
CAPILLARY TUBE 1
7.9CuT 4.0CuT
7.9CuT
7.9CuT
7.9CuT
CAPILLARY TUBE 2
CAPILLARY TUBE 3
4.0CuT
7.9CuT
HEAT
EXCHANGER
THERMISTOR
4.0CuT
MUFFLER
WITH
FILTER
6.4CuT
REFRIGERANT FLOW
COOLING
6.4CuT
12.7CuT
4.0CuT
CAPILLARY TUBE 4
6.4CuT
M
PROPELLER FAN
EV
12.7CuT
12.7CuT
FOUR WAY
VALVE
NORMALLY : OFF
MUFFLER
12.7CuT
7.9CuT
12.7CuT
ELECTRONIC
EXPANSION
VALVE
MUFFLER
WITH FILTER
MUFFLER
DISCHARGE PIPE
THERMISTOR
7.9CuT
6.4CuT
12.7CuT
LIQUID
STOP VALVE
12.7CuT
COMPRESSOR
GAS STOP VALVE
WITH SERVICE PORT
FIELD PIPING
(6.4CuT)
FIELD PIPING
(12.7CuT)
3D051636U
Appendix
153
Piping Diagrams
SiBE06-708_C
1.2.2 Heat Pump
RXS25/35F2V1B
OUTDOOR UNIT
9.5CuT
7.0CuT
OUTDOOR TEMPERATURE
THERMISTOR
HEAT EXCHANGER
7.0CuT
4.8CuT MUFFLER
WITH
FILTER
M
MOTOR OPERATED
VALVE
MUFFLER
WITH
FILTER
9.5CuT
PROPELLER FAN
φ4.0×ID. 2.0CuT
HEAT EXCHANGER
THERMISTOR
4.8CuT
6.4CuT 6.4CuT
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
3D047316S
RXS25/35G2V1B, RXS25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B
OUTDOOR UNIT
OUTDOOR TEMPERATURE
THERMISTOR
9.5CuT
7.0CuT HEAT EXCHANGER
7.0CuT
4.8CuT MUFFLER
WITH
FILTER
M
9.5CuT
PROPELLER FAN
9.5CuT
ELECTRONIC
EXPANSION
VALVE
EV
MUFFLER
WITH
FILTER
φ.4.0×ID. 2.0CuT
HEAT EXCHANGER
THERMISTOR
4.8CuT
6.4CuT 6.4CuT
FOUR WAY
VALVE
ON: HEATING
9.5CuT
7.9CuT
6.4CuT
MUFFLER
WITH
FILTER
FIELD PIPING
LIQUID STOP (6.4CuT)
VALVE
MUFFLER
7.9CuT
DISCHARGE PIPE
THERMISTOR
9.5CuT
COMPRESSOR
ACCUMULATOR
9.5CuT
FIELD PIPING
MUFFLER MUFFLER GAS STOP (9.5CuT)
VALVE
REFRIGERANT FLOW
COOLING
HEATING
3D059586Q
154
Appendix
SiBE06-708_C
Piping Diagrams
RXS50F2V1B, RXS50G2V1B, RXS50J2V1B
OUTDOOR UNIT
HEAT EXCHANGER
7.9CuT
OUTDOOR TEMPERATURE
THERMISTOR
7.9CuT
7.9CuT
7.9CuT
7.9CuT
CAPILLARY TUBE 1
7.9CuT 4.0CuT
7.9CuT
7.9CuT
7.9CuT
CAPILLARY TUBE 2
CAPILLARY TUBE 3
4.0CuT
7.9CuT
HEAT
EXCHANGER
THERMISTOR
4.0CuT
MUFFLER
WITH
FILTER
6.4CuT
4.0CuT
CAPILLARY TUBE 4
EV
M
PROPELLER FAN
MUFFLER
ELECTRONIC
EXPANSION
VALVE
6.4CuT
9.5CuT
12.7CuT
12.7CuT
FOUR WAY
VALVE
ON : HEATING
HEATING
FILTER
12.7CuT
7.9CuT
REFRIGERANT FLOW
COOLING
6.4CuT 6.4CuT
12.7CuT
RECEIVER
MUFFLER
6.4CuT
9.5CuT
7.9CuT
MUFFLER
7.9CuT
LIQUID
STOP VALVE
12.7CuT
DISCHARGE PIPE
THERMISTOR
COMPRESSOR
GAS STOP VALVE
WITH SERVICE PORT
FIELD PIPING
(6.4CuT)
FIELD PIPING
(12.7CuT)
3D051637Y
RXS50K2V1B
OUTDOOR UNIT
HEAT EXCHANGER
7.9CuT
OUTDOOR TEMPERATURE
THERMISTOR
7.9CuT
7.9CuT
7.9CuT
7.9CuT
CAPILLARY TUBE 1
7.9CuT 4.0CuT
7.9CuT
7.9CuT 4.0CuT
7.9CuT
7.9CuT
CAPILLARY TUBE 2
CAPILLARY TUBE 3
4.0CuT
HEAT
EXCHANGER
THERMISTOR
4.0CuT
CAPILLARY TUBE 4
EV
M
MUFFLER
WITH
FILTER
6.4CuT
PROPELLER FAN
7.9CuT
MUFFLER
7.9CuT
DISCHARGE PIPE
THERMISTOR
COMPRESSOR
RECEIVER
MUFFLER
6.4CuT
9.5CuT
MUFFLER
ELECTRONIC
EXPANSION
VALVE
6.4CuT
9.5CuT
12.7CuT
12.7CuT
FOUR WAY
VALVE
ON: HEATING
HEATING
FILTER
12.7CuT
7.9CuT
REFRIGERANT FLOW
COOLING
6.4CuT 6.4CuT
12.7CuT
LIQUID
STOP VALVE
12.7CuT
GAS STOP VALVE
WITH SERVICE PORT
FIELD PIPING
(6.4CuT)
FIELD PIPING
(12.7CuT)
3D080605
Appendix
155
Wiring Diagrams
SiBE06-708_C
2. Wiring Diagrams
2.1
Indoor Unit
FVXS25/35/50FV1B
PCB3
S27
S2W(4)
PCB2
S26
V1 F1U
~
~
RECTIFIER
H1
3.15A
H2
S4W
WIRELESS
REMOTE
CONTROLLER
TRANSMISSION
CIRCUIT
PCB4
H1P
S1W
S47
7
E1
4
H2P
1
M1S
M2S
indoor
M
M
RED
ORG
YLW
PNK
BLU
RED
ORG
YLW
PNK
BLU
S42
1
S21
GRN
S1
E3
RED
BLU
BRN
ORG
WHT
M
HA
S48
S49
t°
PCB1
S32
5
outdoor
FIELD WIRING.
CAUTION
NOTE THAT OPERATION WILL
RESTART AUTOMATICALLY IF
THE MAIN POWER SUPPLY IS
TURNED OFF AND THEN BACK
ON AGAIN.
M1F
R1T
6
S41
1
1
2 →
3
X1M
1
2
3
E3
E4
V2
S46
LED2
GRN
GRN/YLW
H3
SA1
SIGNAL
RECEIVER
LED1
BLK
WHT
RED
t°
R2T
F1U
H1P,H2P
M1F
M1S
M2S
PCB1~PCB4
R1T,R2T
S1~S49
S1W
S2W(4)
S4W
X1M
E3
E4
: PROTECTIVE EARTH
: FUSE
: PILOT LAMP
: FAN MOTOR
: SWING MOTOR
: LOWER AIR OUTLET MOTOR
: PRINTED CIRCUIT BOARD
: THERMISTOR
: CONNECTOR
: OPERATION SWITCH
: UPWARD AIR FLOW LIMIT SWITCH
: AIR OUTLET SELECTION SWITCH
: TERMINAL STRIP
: EARTH TERMINAL(HEAT EX.)
: EARTH TERMINAL(SHIELD PLATE)
3D055953A
156
Appendix
SiBE06-708_C
2.2
Wiring Diagrams
Outdoor Unit
RK(X)S25/35F2V1B
R12T
t°
BRN
V2
HN2
S
RED
V3
GRN/YLW
E
7
IPM1
HC4
+
GRY
HN3
BLU
DB2
~ +
~ _
+
_
C74
3.15A
~ _
1
FU1
IC11
+
_
C75
3.15A
+
_ C95
7
PCB2
MRCW
S20
6
1
S90
1
3
S70
6
1 2 34
S40
7
S80
1
t°
Y1R
M Y1E
IN CASE OF
COOLING ONLY
TYPE
: CAPACITOR
: DIODE BRIDGE
: FUSE
: TRIAC
: INTELLIGENT POWER MODULE
: LIVE
: COIL
: REACTOR
: COMPRESSOR MOTOR
: FAN MOTOR
: MAGNETIC RELAY
5
1
3
3
S80
C74, C75
C94, C95, C100
DB1, DB2
FU1, FU2, FU3
IC11
IPM1
L
L1
L1R
M1C
M1F
MRCW, MRM10, MRM20
S30
1
BLK
BLK
BLK
BLK
BLK
BLK
BLK
OUTDOOR
WHT
ORG
BRN
BLU
RED
2
WHT
YLW
ORG
BLU
BRN
RED
NOTE
1. REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS.
_
W V U
V1
S10
1
C94
+
_
FU2
HL3
WHT
BLK
BLK
BLK
BLK
BLK
BLK
1
GRN/YLW
ORG
S11
SA1
L
N
HL2
MRM10
HN1
HC3
HR2 DB1
~ +
RED
BLK
WHT
ORG
L1R
HR1
BLU
L 1
N 2
3
MRM20
L1
YLW
1
2
3
PCB1
GRY
FU3
Z2C HL1 20A
X1M
YLW
HC1
HC2
BLK
BLK
C100
INDOOR FIELD WIRING.
N
PCB1, PCB2
Q1L
R1T, R2T, R3T, R12T
S10, S11, S20
S30, S40, S70
S80, S90, S91
HC3, HC4, HL3, HN3
: NEUTRAL
: PRINTED CIRCUIT BOARD
: OVERLOAD PROTECTOR
: THERMISTOR
t°
t°
M
M1F
R1T R2T R3T
(OUTDOOR)
(DISCHARGE)
(CONDENSER)
SA1
V1, V2, V3
X1M
Y1E
Y1R
Z1C, Z2C
: CONNECTOR
Z1C
N=2
V
1~
IN CASE OF
HEAT PUMP
TYPE
Q1L
W
U
M1C
: SURGE ARRESTER
: VARISTOR
: TERMINAL STRIP
: ELECTRONIC EXPANSION VALVE COIL
: REVERSING SOLENOID VALVE COIL
: FERRITE CORE
: PROTECTIVE EARTH
3D046707N
RK(X)S25/35G2V1B
FIELD WIRING.
MRM10
V2
GRN/YLW
L
HL2
MR30
1
SA1
YLW
GRN
E1
S11
9
E2
PCB1
MR30_A
BLK
BLK
BRN
BRN
Z2C
N=2
MR30_B
4
GRY
WHT
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
V1
+
C6
~ -
FU1
9 3.15A
+
FU2
C118 3.15A
-
W V
PCB2
S10
BLK
U
1
2
S50
1
S20
1
NOTE
1. REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS.
1
3
S80
: CAPACITOR
C5, C6, C118
M
DB1, DB2
: DIODE BRIDGE
IN CASE OF
FU1, FU2, FU3
: FUSE
Y1E
COOLING ONLY
IPM1
: INTELLIGENT POWER MODULE
TYPE
L
: LIVE
L1
: COIL
PCB1, PCB2
: PRINTED CIRCUIT BOARD
L1R
: REACTOR
: THERMISTOR PTC
PTC1
M1C
: COMPRESSOR MOTOR
S10, S11, S20, S30,
M1F
: FAN MOTOR
S40, S50, S70, S80,
MRCW, MR30, MRM10, MRM20 : MAGNETIC RELAY
S90, HL3, HN3
: CONNECTOR
N
: NEUTRAL
R1T, R2T, R3T
: THERMISTOR
Q1L
: OVERLOAD PROTECTOR
SA1
: SURGE ARRESTER
Appendix
-
HL3
S30
1
MRCW
6
2
S40
1
1 S80 3
S90
1
6
S70
1 2 3 4
Y1R
IN CASE OF
HEAT PUMP
TYPE
Q1L
V1, V2, V3
X1M
Y1E
Y1R
Z1C, Z2C, Z3C
t˚
t˚
t˚
3
7
1
BLK
outdoor
+
C5
DB2
~ +
~ -
BLU
V3
N
HN3
HN2
RED
S
BLU
HN1
WHT
YLW
RED
+
WHT
ORG
BRN
BLU
RED
N 2
3
IPM1
HR2 DB1
~ +
ORG
BLK
BLK
BLK
BLK
BLK
BLK
3
ORG
L1R
HR1
L1
BLK
2
BLK
MRM20
N=1
FU3
Z3C HL1 20A
GRY
1
X1M
L 1
WHT
YLW
ORG
BLU
BRN
RED
indoor
Z1C
V N=4
M
1~
M1F
R1T R2T R3T
(OUTDOOR)
(DISCHARGE)
(CONDENSER)
: VARISTOR
: TERMINAL STRIP
: ELECTRONIC EXPANSION VALVE COIL
: REVERSING SOLENOID VALVE COIL
: FERRITE CORE
: PROTECTIVE EARTH
W
U
M1C
3D058684B
157
Wiring Diagrams
SiBE06-708_C
RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B
FIELD WIRING.
OUTDOOR
4
1
BLK
BLK
X12A
: INTELLIGENT POWER MODULE
L
: LIVE
L1
: COIL
~ -
+
1
S20
M
SW1
Y1E
PCB3
L1R
: REACTOR
M1C
: COMPRESSOR MOTOR
M1F
: FAN MOTOR
PCB1, PCB2, PCB3
S10, S11, S20, S40, S50
: PRINTED CIRCUIT BOARD
S70, S80, S90, S100, S110
: CONNECTOR
HL3, HN3, X11A, X12A
MRCW, MR30, MRM10, MRM20 : MAGNETIC RELAY
: NEUTRAL
N
: OVERLOAD PROTECTOR
3 S80 1
6
1
S110
BLK
IPM1, IPM2
BLK
: FUSE
9
W V U
IPM2
S100
1
2
2
: DIODE BRIDGE
FU2
3.15A
-
R1T, R2T, R3T
: THERMISTOR
SA1
: SURGE ARRESTER
S80
3
1
S90
1
6
2
t˚
Y1R
t˚
S40
S70
1 4 7 101112 13
1
t˚
MS
3~
Q1L
R1T R2T R3T
(OUTDOOR) (DISCHARGE)
(CONDENSER)
IN CASE OF
COOLING ONLY
TYPE
X11A
YLW
RED
WHT
BLK
BRN
ORG
BLU
PCB1
S10
DB3
~ +
MRCW
S50
3
1
NOTE
1. REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS.
: CAPACITOR
C5, C6, C119
Q1L
9
MR30_B
WHT
GRN
MR30_A
BRN
BRN
GRN
E2
-
PCB2
RED
E1
V1
BLU
S11
Q1
~ -
1
WHT
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
1
+
C119
-
+
C6 -
BLU
FU1
3.15A
SA1
DB1, DB2, DB3
FU1, FU2, FU3
~ -
ORG
MR30
Z2C
N=2
+
C5 -
DB2
~ +
HA2
GRY
HL3
HL2
GRN/YLW
L
HA1
YLW
BLU
V3
N
HN3
HN2
RED
MRM10
V2
S
GRY
AC2
BLK
RED
+
BLK
BLK
BLK
BLK
BLK
BLK
WHT
3
BLU
N 2
3
HR2 DB1
~ +
BRN
BLU
2
IPM1
WHT
L1R
HR1
L1
RED
BLK
WHT
X1M
L 1
YLW
MRM20
N=2
FU3
Z3C AC1 20A
1
WHT
YLW
ORG
BLU
INDOOR
Z1C
N=3
W
M1F
SW1
V1, V2, V3
: FORCED OPERATION SWITCH
X1M
: TERMINAL STRIP
Y1E
: ELECTRONIC EXPANSION VALVE COIL
Y1R
Z1C, Z2C, Z3C
: REVERSING SOLENOID VALVE COIL
V
U
MS
3~
M1C
: VARISTOR
: FERRITE CORE
3D065704E
: PROTECTIVE EARTH
RKS50F2V1B, RKS50G2V1B
L1R
Z2C
N
E2
MRM10
BLK
8
+ + +
S70
1
PM1
U
V
W
5
4
3
FU2
3.15A
1
S10
6(P)
7(N)
2
BLU
RED
9
V11
V6
Z4C
7
3.15A
1
AC2
FU3
HR2
MRM20
BRN
WHT
X2M
1
2
3
E1
SA2
FU1 V2
AC1 30A
Z3C
TO INDOOR UNIT
1
2
3
HR1
GRN
L
WHT
Z1C
X1M
POWER SUPPLY
L
N
WHT
GRN
GRN
YLW
V3
Z5C X12A
RED
RED
BLU
BRN
ORG
BLU
BRN
ORG
WHT
M1F
M
WHT
M1C
X11A
U
RED
RED
V M
YLW
YLW
3~
BLU
BLU
W
BLK
BLK
Q1L
PCB1
MRC W
S40
1
V5
1 S52 5
PCB2
1 S102 5
4
BLK
BLK
1 S90 6
t°
t°
t°
M
R3T R2T R1T
(OUTDOOR)(DISCHARGE)
(CONDENSER)
Y1E
LED A S2
SW1
1 S20 6
BLK
1
WHT
YLW
ORG
BLU
RED
BLK
WHT
BLU
BLU
BLU
BLU
BLU
FIELD WIRING
3
GRN
1S101 5
1 S51 5
indoor
S80
RED
SHEET METAL
SW4
outdoor
Z1C~Z5C
X1M, X2M
Y1E
V2, V3, V5, V6, V11
SA2
FU1, FU2, FU3
AC1, AC2
U, V, W, X11A, X12A
E1, E2
HR1, HR2
158
: FERRITE CORE
: TERMINAL STRIP
: ELECTRONIC EXPANSION VALVE COIL
: VARISTOR
: SURGE ARRESTER
: FUSE
: CONNECTOR
MRM10, MRM20
MRC/W
R1T~R3T
S2~S102
LEDA
: MAGNETIC RELAY
: THERMISTOR
: CONNECTOR
: PILOT LAMP
L
: LIVE
N
: NEUTRAL
SW1 : FORCED OPERATION ON/OFF SW (SW1)
SW4 : LOCAL SETTING SW (SW4)
: COMPRESSOR MOTOR
M1C
: FAN MOTOR
M1F
: REACTOR
L1R
: OVERLOAD PROTECTOR
Q1L
: POWER MODULE
PM1
: PRINTED CIRCUIT BOARD
PCB1,2
STEEL METAL : TERMINAL STRIP FIXED PLATE
3D056145B
Appendix
SiBE06-708_C
Wiring Diagrams
RXS50F2V1B, RXS50G2V1B, RXS50J2V1B
L1R
Z2C
N
AC1
BRN
TO INDOOR UNIT
X2M
1
2
3
1
2
3
BLU
WHT
BLK
Z3C
MRM20
1
9
8
V11
V6
AC2
6(P)
+ + +
7(N)
2
S70
1
PM1
U
V
W
5
4
3
FU2
3.15 A
1
S10
7
Z5C X12A
RED
RED
3.15A
MRM10
Z4C
RED
E2
FU3
HR2
HR1
E1
SA2
FU1
30A V2
WHT
Z1C
GRN
L
POWER SUPPLY
L
N
WHT
GRN
GRN
YLW
X1M
BLU
BRN
ORG
BLU
BRN
ORG
WHT
RED
M1F
M
WHT
M1C
U
V
M
YLW
3~
BLU
W
X11A
YLW
BLU
V3
RED
BLK
BLK
Q1L
PCB1
MRC/W
SHEET
METAL
BLK
t°
1 S52 5
1 S102 5
PCB2
SW1
t°
t°
M
Y1R
LED A S2
4
BLK
1 S90 6
BLK
1 S20 6
RED
3 S80 1
WHT
YLW
ORG
BLU
FIELD WIRING
1
BLU
BLU
BLU
BLU
BLU
BLU
RED
BLK
WHT
GRN
1 S101 5
BLU
1 S51 5
INDOOR
S40
V5
R3T R2T R1T
(OUTDOOR) (DISCHARGE)
(CONDENSER)
Y1E
SW4
OUTDOOR
Z1C~Z5C
X1M, X2M
Y1E
V2, V3, V5, V6, V11
SA2
FU1, FU2, FU3
AC1, AC2
U, V, W, X11A, X12A
E1, E2
HR1, HR2
: FERRITE CORE
: TERMINAL STRIP
: ELECTRONIC EXPANSION VALVE COIL
: VARISTOR
: SURGE ARRESTER
: FUSE
MRM10, MRM20
MRC/W
R1T~R3T
S2~S102
LEDA
: MAGNETIC RELAY
: THERMISTOR
: CONNECTOR
: PILOT LAMP
L
N
SW1
SW4
: LIVE
: NEUTRAL
: FORCED OPERATION ON/OFF SW (SW1)
: LOCAL SETTING SW (SW4)
: CONNECTOR
M1C
M1F
L1R
Q1L
PM1
PCB1, 2
Y1R
SHEET METAL
: COMPRESSOR MOTOR
: FAN MOTOR
: REACTOR
: OVERLOAD PROTECTOR
: POWER MODULE
: PRINTED CIRCUIT BOARD
: REVERSING SOLENOID VALVE COIL
: TERMINAL STRIP FIXED PLATE
3D056095G
RXS50K2V1B
FIELD WIRING
indoor
TO INDOOR UNIT
POWER SUPPLY
outdoor
NOTE
1.REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS.
: CAPACITOR
C7, C8
: DIODE BRIDGE
DB1, DB3
: FUSE
FU1, FU2, FU3
: FIELD FUSE
FU4
: INTELLIGENT POWER MODULE
IPM
: LIVE
L
: REACTOR
L803, L804
: COMPRESSOR MOTOR
M1C
: FAN MOTOR
M1F
MRCW, MRM10, MRM20, MR30,
MR30_A, MR30_B
: MAGNETIC RELAY
N
: NEUTRAL
Q1L
: OVERLOAD PROTECTOR
Appendix
IN CASE OF
COOLING ONLY
TYPE
: EARTH LEAK DETECTOR
Q1DI
: PRINTED CIRCUIT BOARD
PCB1, PCB2
S10, S11, S12, S20,
S40, S50, S70, S80, S90,
HL3, HN3, X11A, X12A : CONNECTOR
: THERMISTOR
R1T, R2T, R3T
: SURGE ABSORBER
SA1
(OUTDOOR) (DISCHARGE)
(CONDENSER)
V1, V2, V3
X1M
Y1E
Y1S
Z1C, Z2C, Z3C, Z4C
: VARISTOR
: TERMINAL STRIP
: ELECTRONIC EXPANSION VALVE COIL
: REVERSING SOLENOID VALVE COIL
: FERRITE CORE
: PROTECTIVE EARTH
: EARTH
3D079016
159
Removal Procedure (Booklet No.)
SiBE06-708_C
3. Removal Procedure (Booklet No.)
Refer to the following booklets for removal procedure.
160
∗FVXS25/35/50FV1B
Refer to Si061262_A.
∗RK(X)S25/35F2V1B
Refer to Si001066.
∗RK(X)S25/35G2V1B
Refer to Si001069.
∗RK(X)S25/35G2V1B9, RXS25/35J2V1B
Refer to Si001067.
∗RKS25K2V1B
Refer to Si001156.
∗RXS25K3V1B, RXS35K2V1B
Refer to Si001273.
∗RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B
Refer to Si001076.
∗RXS50K2V1B
Refer to Si001274.
Appendix
Revision History
Month / Year
Version
Revised contents
03 / 2007
SiBE06-708
05 / 2010
SiBE06-708_A
Model addition: RK(X)S25/35/50G2V1B, RK(X)S25/35G2V1B9
01 / 2011
SiBE06-708_B
Model addition: RXS25/35/50J2V1B
01 / 2013
SiBE06-708_C
Model addition: RXS25/35/50K2V1B, RXS25K3V1B
First edition
Warning
z Daikin products are manufactured for export to numerous countries throughout the world. Prior to
purchase, please confirm with your local authorised importer, distributor and/or retailer whether this
product conforms to the applicable standards, and is suitable for use, in the region where the product
will be used. This statement does not purport to exclude, restrict or modify the application of any local
legislation.
z Ask a qualified installer or contractor to install this product. Do not try to install the product yourself.
Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion.
z Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or
contractor to install those parts and accessories. Use of unauthorised parts and accessories or
improper installation of parts and accessories can result in water or refrigerant leakage, electrical
shock, fire or explosion.
z Read the User's Manual carefully before using this product. The User's Manual provides important
safety instructions and warnings. Be sure to follow these instructions and warnings.
If you have any enquiries, please contact your local importer, distributor and/or retailer.
Cautions on product corrosion
1. Air conditioners should not be installed in areas where corrosive gases, such as acid gas or alkaline gas, are produced.
2. If the outdoor unit is to be installed close to the sea shore, direct exposure to the sea breeze should be avoided. If you need to install
the outdoor unit close to the sea shore, contact your local distributor.
Dealer
Head Office:
Umeda Center Bldg., 2-4-12, Nakazaki-Nishi,
Kita-ku, Osaka, 530-8323 Japan
Tokyo Office:
JR Shinagawa East Bldg., 2-18-1, Konan,
Minato-ku, Tokyo, 108-0075 Japan
http://www.daikin.com/global_ac/
c All rights reserved
zSpecifications, designs and other content appearing in this brochure are current as of January 2013 but subject to change without notice.
SiBE06-708_C
01/2013 AK.B