Daikin FTXG20LV1BW User manual

Service
Manual
[Applied Models]
zInverter Pair : Heat Pump
Inverter Pair
Wall Mounted Type L-Series
SiBE041401E

SiBE041401E
iTable of Contents
Inverter Pair
Wall Mounted Type
L-Series
zHeat Pump
Indoor Unit
FTXG20LV1BW
FTXG20LV1BS
FTXG25LV1BW
FTXG25LV1BS
FTXG35LV1BW
FTXG35LV1BS
FTXG50LV1BW
FTXG50LV1BS
Outdoor Unit
RXG20L2V1B
RXG25L2V1B
RXG35L2V1B
RXG50L2V1B

SiBE041401E
Table of Contents ii
1. Safety Cautions.......................................................................................v
1.1 Warnings and Cautions Regarding Safety of Workers.............................v
1.2 Warnings and Cautions Regarding Safety of Users............................... vii
2. Used Icons ..............................................................................................x
Part 1 List of Functions ................................................................ 1
1. Functions.................................................................................................2
Part 2 Specifications .................................................................... 3
1. Specifications ..........................................................................................4
Part 3 Printed Circuit Board Connector Wiring Diagram ............. 8
1. Indoor Unit...............................................................................................9
2. Outdoor Unit..........................................................................................11
2.1 20/25/35 Class .......................................................................................11
2.2 50 Class .................................................................................................13
Part 4 Function and Control........................................................ 15
1. Main Functions......................................................................................16
1.1 Temperature Control ..............................................................................16
1.2 Frequency Principle................................................................................16
1.3 Operation Starting Control......................................................................18
1.4 Airflow Direction Control.........................................................................19
1.5 Fan Speed Control for Indoor Unit .........................................................20
1.6 Program Dry Operation ..........................................................................21
1.7 Automatic Operation...............................................................................22
1.8 Thermostat Control.................................................................................23
1.9 NIGHT SET Mode ..................................................................................24
1.10 ECONO Operation .................................................................................24
1.11 2-Area INTELLIGENT EYE Operation ...................................................25
1.12 Inverter POWERFUL Operation .............................................................27
1.13 Multi-Monitor Lamp / TIMER Lamp ........................................................27
1.14 Clock Setting ..........................................................................................28
1.15 WEEKLY TIMER Operation ...................................................................29
1.16 Other Functions......................................................................................35
2. Function of Thermistor ..........................................................................36
3. Control Specification .............................................................................37
3.1 Mode Hierarchy ......................................................................................37
3.2 Frequency Control..................................................................................37
3.3 Controls at Mode Changing / Start-up....................................................39
3.4 Discharge Pipe Temperature Control.....................................................40
3.5 Input Current Control..............................................................................41
3.6 Freeze-up Protection Control .................................................................42
3.7 Heating Peak-cut Control .......................................................................42
3.8 Outdoor Fan Control...............................................................................43
3.9 Liquid Compression Protection Function................................................43
3.10 Defrost Control .......................................................................................44
3.11 Electronic Expansion Valve Control .......................................................45
3.12 Malfunctions ...........................................................................................48

SiBE041401E
iii Table of Contents
Part 5 Remote Controller ............................................................ 49
1. Remote controller..................................................................................50
Part 6 Service Diagnosis............................................................. 52
1. General Problem Symptoms and Check Items.....................................53
2. Troubleshooting with LED .....................................................................54
2.1 Indoor Unit..............................................................................................54
2.2 Outdoor Unit ...........................................................................................54
3. Service Diagnosis .................................................................................55
4. Troubleshooting ....................................................................................58
4.1 Error Codes and Description ..................................................................58
4.2 Indoor Unit PCB Abnormality .................................................................59
4.3 Freeze-up Protection Control / Heating Peak-cut Control ......................60
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................61
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................63
4.6 Front Panel Open / Close Fault..............................................................64
4.7 Refrigerant Shortage ..............................................................................65
4.8 Low-voltage Detection or Over-voltage Detection..................................67
4.9 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)......69
4.10 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ...............71
4.11 Outdoor Unit PCB Abnormality...............................................................72
4.12 OL Activation (Compressor Overload) ...................................................73
4.13 Compressor Lock ...................................................................................75
4.14 DC Fan Lock ..........................................................................................76
4.15 Input Overcurrent Detection ...................................................................77
4.16 Four Way Valve Abnormality..................................................................78
4.17 Discharge Pipe Temperature Control.....................................................80
4.18 High Pressure Control in Cooling ...........................................................81
4.19 Compressor System Sensor Abnormality ..............................................82
4.20 Position Sensor Abnormality ..................................................................83
4.21 DC Voltage / Current Sensor Abnormality (20/25/35 Class Only)..........85
4.22 Thermistor or Related Abnormality (Outdoor Unit).................................86
4.23 Electrical Box Temperature Rise............................................................88
4.24 Radiation Fin Temperature Rise ............................................................89
4.25 Output Overcurrent Detection ................................................................91
5. Check ....................................................................................................93
5.1 Thermistor Resistance Check ................................................................93
5.2 Fan Motor Connector Output Check ......................................................94
5.3 Power Supply Waveforms Check...........................................................94
5.4 Electronic Expansion Valve Check.........................................................94
5.5 Four Way Valve Performance Check .....................................................95
5.6 Inverter Unit Refrigerant System Check.................................................95
5.7 Inverter Analyzer Check .........................................................................96
5.8 Rotation Pulse Check on the Outdoor Unit PCB ....................................97
5.9 Installation Condition Check...................................................................98
5.10 Discharge Pressure Check.....................................................................99
5.11 Outdoor Fan System Check ...................................................................99
5.12 Main Circuit Short Check......................................................................100
5.13 Power Module Check ...........................................................................101

SiBE041401E
Table of Contents iv
Part 7 Trial Operation and Field Settings................................. 103
1. Tips for Servicing ................................................................................104
1.1 Pump Down Operation .........................................................................104
1.2 Forced Cooling Operation ....................................................................104
2. Trial Operation ....................................................................................106
3. Field Settings ......................................................................................107
3.1 When 2 Units are installed in 1 Room ..................................................107
3.2 Model Type Setting ..............................................................................107
3.3 Standby Electricity Saving....................................................................108
3.4 Jumper Settings ...................................................................................109
4. Silicon Grease on Power Transistor / Diode Bridge............................110
Part 8 Appendix......................................................................... 111
1. Piping Diagrams..................................................................................112
1.1 Indoor Unit............................................................................................112
1.2 Outdoor Unit .........................................................................................112
2. Wiring Diagrams..................................................................................114
2.1 Indoor Unit............................................................................................114
2.2 Outdoor Unit .........................................................................................114

Safety Cautions SiBE041401E
v
1. Safety Cautions
Be sure to read the following safety cautions before conducting repair work.
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.
Caution Items 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.
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.
1.1 Warnings and Cautions Regarding Safety of Workers
Warning
Do not store the equipment in a room with successive fire sources (e.g.,
naked flame, gas appliance, electric heater).
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.
Be sure to discharge the capacitor completely before conducting repair
work.
The step-up capacitor supplies high-voltage electricity to the electrical
components of the outdoor unit.
A charged capacitor may cause an electrical shock.

SiBE041401E Safety Cautions
vi
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.
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-32 / R-410A refrigerant models, be sure to use pipes, flare
nuts and tools for the exclusive use of the R-32 / 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.
Do not mix air or gas other than the specified refrigerant (R-32 / R-410A /
R-22) in the refrigerant system.
If air enters the refrigerating system, an excessively high pressure results,
causing equipment damage and injury.
Warning
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 earth / 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.

Safety Cautions SiBE041401E
vii
1.2 Warnings and Cautions Regarding Safety of Users
Use the welder in a well-ventilated place.
Using the welder in an enclosed room may cause oxygen deficiency.
Caution
Warning
Do not store the equipment in a room with successive fire sources (e.g.,
naked flame, gas appliance, electric heater).
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.

SiBE041401E Safety Cautions
viii
Do not mix air or gas other than the specified refrigerant (R-32 / 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.
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
installation frame.
Incorrect use of the installation frame and improper installation may cause the
equipment to fall, resulting in injury.
For unitary type
only
Be sure to install the product securely in the installation frame mounted
on the window frame.
If the unit is not securely mounted, it may fall and cause injury.
For unitary type
only
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.
Warning
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.

Safety Cautions SiBE041401E
ix
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 earth / grounding, and repair it if the equipment is not properly
earthed / grounded.
Improper earth / grounding may cause an electrical shock.
Be sure to measure the insulation resistance after the repair, and make
sure that the resistance is 1 MΩor 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.
If the packing and seal are not installed properly, water may enter the room and
wet the furniture and floor.
For unitary type
only
Caution

SiBE041401E Used Icons
x
2. Used Icons
The following icons are used to attract the attention of the reader to specific information.
Icon Type of
Information
Description
Warning
Warning A Warning is used when there is danger of personal injury.
Caution
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.
Note:
Note A Note provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
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.

SiBE041401E
1List of Functions
Part 1
List of Functions
1. Functions.................................................................................................2

SiBE041401E Functions
List of Functions 2
1. Functions
Category Functions
FTXG20/25/35/50LV1BW(S) RXG20/25/35/50L2V1B
Category Functions
FTXG20/25/35/50LV1BW(S) RXG20/25/35/50L2V1B
Basic Function Inverter (with inverter power control) zHealth & Clean Air-purifying filter —
PAM control zPhotocatalytic deodorizing filter —
Standby electricity saving zAir-purifying filter with photocatalytic
deodorizing function —
Compressor Oval scroll compressor —
Swing compressor zTitanium apatite photocatalytic
air-purifying filter z
Rotary compressor —
Reluctance DC motor zAir filter (prefilter) z
Comfortable
Airflow
Power-airflow flap — Wipe-clean flat panel z
Power-airflow dual flaps zWashable grille —
Power-airflow diffuser — MOLD PROOF operation —
Wide-angle louvers zHeating dry operation —
Auto-swing (up and down) zGood-sleep cooling operation —
Auto-swing (right and left) zTimer WEEKLY TIMER operation z
3-D airflow z24-hour ON/OFF timer z
COMFORT AIRFLOW operation zNIGHT SET mode z
Comfort
Control
Auto fan speed zWorry Free
(Reliability &
Durability)
Auto-restart (after power failure) z
Indoor unit quiet operation zSelf-diagnosis (digital, led) display z
NIGHT QUIET mode (automatic) — Wiring error check function —
OUTDOOR UNIT QUIET operation (manual) zAnti-corrosion treatment of outdoor heat
exchanger z
INTELLIGENT EYE operation zFlexibility Multi-split / split type compatible indoor unit z
Quick warming function
(preheating operation) zFlexible power supply correspondence —
High ceiling application —
Hot-start function zChargeless 10 m
Automatic defrosting zEither side drain (right or left) z
Operation Automatic operation zPower selection —
Program dry operation zRemote
Control
5-room centralized controller (option) z
Fan only zRemote control adaptor
(normal open pulse contact) (option) z
Lifestyle
Convenience
New POWERFUL operation (non-inverter) —
Inverter POWERFUL operation zRemote control adaptor
(normal open contact) (option) z
Priority-room setting —
COOL / HEAT mode lock —
DIII-NET compatible (adaptor) (option) z
HOME LEAVE operation — Remote
Controller
Wireless z
ECONO operation zWired (option) —
Indoor unit ON/OFF button z
Signal receiving sign z
Multi-colored indicator lamp
(multi-monitor lamp) z
Monitor brightness setting z
R/C with back light z
Temperature display —
Note: z: Available
— : Not available

SiBE041401E
3Specifications
Part 2
Specifications
1. Specifications ..........................................................................................4

SiBE041401E Specifications
Specifications 4
1. Specifications
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model
Indoor Unit FTXG20LV1BW FTXG20LV1BS
Outdoor Unit RXG20L2V1B RXG20L2V1B
Cooling Heating Cooling Heating
Capacity
Rated (Min. ~ Max.)
kW 2.3 (1.3 ~ 2.8) 2.5 (1.3 ~ 4.3) 2.3 (1.3 ~ 2.8) 2.5 (1.3 ~ 4.3)
Btu/h 7,800 (4,400 ~ 9,500) 8,500 (4,400 ~ 14,600) 7,800 (4,400 ~ 9,500) 8,500 (4,400 ~ 14,600)
kcal/h 1,980 (1,120 ~ 2,410) 2,150 (1,120 ~ 3,700) 1,980 (1,120 ~ 2,410) 2,150 (1,120 ~ 3,700)
Running Current (Rated) A2.8 - 2.7 - 2.6 2.8 - 2.7 - 2.6 2.8 - 2.7 - 2.6 2.8 - 2.7 - 2.6
Power Consumption
Rated (Min. ~ Max.) W501 (320 ~ 760) 500 (310 ~ 1,120) 501 (320 ~ 760) 500 (310 ~ 1,120)
Power Factor (Rated) %81.3 - 80.7 - 80.2 81.1 - 80.5 - 80.1 81.3 - 80.7 - 80.2 81.1 - 80.5 - 80.1
EER (Cooling) / COP (Heating)
Rated (Min. ~ Max.) W/W 4.59 (4.06 ~ 3.68) 5.00 (4.19 ~ 3.84) 4.59 (4.06 ~ 3.68) 5.00 (4.19 ~ 3.84)
Piping
Connections
Liquid mm φ6.4 φ 6.4
Gas mm φ9.5 φ 9.5
Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m20 20
Max. Interunit Height Difference m15 15
Chargeless m10 10
Amount of Additional Charge of
Refrigerant g/m 20 20
Indoor Unit FTXG20LV1BW FTXG20LV1BS
Front Panel Color White Silver
Airflow Rate
H
m³/min
(cfm)
8.9 (313) 10.2 (361) 8.9 (313) 10.2 (361)
M6.6 (234) 8.4 (298) 6.6 (234) 8.4 (298)
L4.4 (155) 6.3 (223) 4.4 (155) 6.3 (223)
SL 2.6 (91) 3.8 (133) 2.6 (91) 3.8 (133)
Fan
Type Cross Flow Fan Cross Flow Fan
Motor Output W29 29
Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downwards Right, Left, Horizontal, Downwards
Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof
Running Current (Rated) A0.12 - 0.12 - 0.12 0.15 - 0.15 - 0.15 0.12 - 0.12 - 0.12 0.15 - 0.15 - 0.15
Power Consumption (Rated) W23 - 23 - 23 31 - 31 - 31 23 - 23 - 23 31 - 31 - 31
Power Factor (Rated) %87.1 - 83.3 - 79.9 93.9 - 89.9 - 86.1 87.1 - 83.3 - 79.9 93.9 - 89.9 - 86.1
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 303 × 998 × 212 303 × 998 × 212
Packaged Dimensions (H × W × D) mm 322 × 1,101 × 389 322 × 1,101 × 389
Weight (Mass) kg 12 12
Gross Weight (Gross Mass) kg 16 16
Sound
Pressure
Level H / M / L / SL dB(A) 38 / 32 / 25 / 19 40 / 34 / 28 / 19 38 / 32 / 25 / 19 40 / 34 / 28 / 19
Sound Power Level dB 54 56 54 56
Outdoor Unit RXG20L2V1B RXG20L2V1B
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 1YC23APXD 1YC23APXD
Motor Output W600 600
Refrigerant
Oil
Type FVC50K FVC50K
Charge L0.375 0.375
Refrigerant Type R-410A R-410A
Charge kg 1.05 1.05
Airflow Rate Hm³/min
(cfm)
34.5 (1,218) 31.1 (1,098) 34.5 (1,218) 31.1 (1,098)
SL 31.0 (1,094) 26.4 (932) 31.0 (1,094) 26.4 (932)
Fan Type Propeller Propeller
Motor Output W23 23
Running Current (Rated) A2.68 - 2.58 - 2.48 2.65 - 2.55 - 2.45 2.68 - 2.58 - 2.48 2.65 - 2.55 - 2.45
Power Consumption (Rated) W478 - 478 - 478 472 - 472 - 472 478 - 478 - 478 472 - 472 - 472
Power Factor (Rated) %81.1 - 80.6 - 80.3 81.0 - 80.5 - 80.3 81.1 - 80.6 - 80.3 81.0 - 80.5 - 80.3
Starting Current A2.8 2.8
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 612 × 906 × 402 612 × 906 × 402
Weight (Mass) kg 35 35
Gross Weight (Gross Mass) kg 38 38
Sound
Pressure
Level H / SL dB(A) 46 / 43 47 / 44 46 / 43 47 / 44
Sound Power Level dB 61 62 61 62
Drawing No. 3D086752 3D086756
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Cooling Heating Piping Length
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB Indoor ; 20°CDB Outdoor ; 7°CDB / 6°CWB 5 m

Specifications SiBE041401E
5Specifications
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model
Indoor Unit FTXG25LV1BW FTXG25LV1BS
Outdoor Unit RXG25L2V1B RXG25L2V1B
Cooling Heating Cooling Heating
Capacity
Rated (Min. ~ Max.)
kW 2.4 (1.3 ~ 3.0) 3.4 (1.3 ~ 4.5) 2.4 (1.3 ~ 3.0) 3.4 (1.3 ~ 4.5)
Btu/h 8,200 (4,400 ~ 10,200) 11,600 (4,400 ~ 15,400) 8,200 (4,400 ~ 10,200) 11,600 (4,400 ~ 15,400)
kcal/h 2,060 (1,120 ~ 2,580) 2,920 (1,120 ~ 3,870) 2,060 (1,120 ~ 2,580) 2,920 (1,120 ~ 3,870)
Running Current (Rated) A2.9 - 2.8 - 2.7 4.4 - 4.2 - 4.0 2.9 - 2.8 - 2.7 4.4 - 4.2 - 4.0
Power Consumption
Rated (Min. ~ Max.) W523 (320 ~ 820) 769 (310 ~ 1,320) 523 (320 ~ 820) 769 (310 ~ 1,320)
Power Factor (Rated) %82.0 - 81.2 - 80.7 79.4 - 79.6 - 80.1 82.0 - 81.2 - 80.7 79.4 - 79.6 - 80.1
EER (Cooling) / COP (Heating)
Rated (Min. ~ Max.) W/W 4.59 (4.06 ~ 3.66) 4.42 (4.19 ~ 3.41) 4.59 (4.06 ~ 3.66) 4.42 (4.19 ~ 3.41)
Piping
Connections
Liquid mm φ6.4 φ6.4
Gas mm φ9.5 φ9.5
Drain mm φ18.0 φ18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m20 20
Max. Interunit Height Difference m15 15
Chargeless m10 10
Amount of Additional Charge of
Refrigerant g/m 20 20
Indoor Unit FTXG25LV1BW FTXG25LV1BS
Front Panel Color White Silver
Airflow Rate
H
m³/min
(cfm)
8.9 (313) 11.0 (388) 8.9 (313) 11.0 (388)
M6.6 (234) 8.6 (303) 6.6 (234) 8.6 (303)
L4.4 (155) 6.3 (223) 4.4 (155) 6.3 (223)
SL 2.6 (91) 3.8 (133) 2.6 (91) 3.8 (133)
Fan
Type Cross Flow Fan Cross Flow Fan
Motor Output W29 29
Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downwards Right, Left, Horizontal, Downwards
Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof
Running Current (Rated) A0.12 - 0.12 - 0.12 0.16 - 0.16 - 0.16 0.12 - 0.12 - 0.12 0.16 - 0.16 - 0.16
Power Consumption (Rated) W23 - 23 - 23 33 - 33 - 33 23 - 23 - 23 33 - 33 - 33
Power Factor (Rated) %87.1 - 83.3 - 79.9 93.8 - 89.6 - 85.9 87.1 - 83.3 - 79.9 93.8 - 89.6 - 85.9
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 303 × 998 × 212 303 × 998 × 212
Packaged Dimensions (H × W × D) mm 322 × 1,101× 389 322 × 1,101× 389
Weight (Mass) kg 12 12
Gross Weight (Gross Mass) kg 16 16
Sound
Pressure
Level H / M / L / SL dB(A) 38 / 32 / 25 / 19 41 / 34 / 28 / 19 38 / 32 / 25 / 19 41 / 34 / 28 / 19
Sound Power Level dB 54 56 54 56
Outdoor Unit RXG25L2V1B RXG25L2V1B
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 1YC23APXD 1YC23APXD
Motor Output W600 600
Refrigerant
Oil
Type FVC50K FVC50K
Charge L0.375 0.375
Refrigerant Type R-410A R-410A
Charge kg 1.05 1.05
Airflow Rate Hm³/min
(cfm)
34.5 (1,218) 31.1 (1,098) 34.5 (1,218) 31.1 (1,098)
SL 31.0 (1,094) 26.4 (932) 31.0 (1,094) 26.4 (932)
Fan Type Propeller Propeller
Motor Output W23 23
Running Current (Rated) A2.78 - 2.68 - 2.58 4.24 - 4.04 - 3.84 2.78 - 2.68 - 2.58 4.24 - 4.04 - 3.84
Power Consumption (Rated) W500 - 500 - 500 736 - 736 - 736 500 - 500 - 500 736 - 736 - 736
Power Factor (Rated) %81.8 - 81.1 - 80.7 78.9 - 79.2 - 79.8 81.8 - 81.1 - 80.7 78.9 - 79.2 - 79.8
Starting Current A4.4 4.4
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 612 × 906 × 402 612 × 906 × 402
Weight (Mass) kg 35 35
Gross Weight (Gross Mass) kg 38 38
Sound
Pressure
Level H / SL dB(A) 46 / 43 47 / 44 46 / 43 47 / 44
Sound Power Level dB 61 62 61 62
Drawing No. 3D086753 3D086757
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Cooling Heating Piping Length
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB Indoor ; 20°CDB Outdoor ; 7°CDB / 6°CWB 5 m

SiBE041401E Specifications
Specifications 6
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model
Indoor Unit FTXG35LV1BW FTXG35LV1BS
Outdoor Unit RXG35L2V1B RXG35L2V1B
Cooling Heating Cooling Heating
Capacity
Rated (Min. ~ Max.)
kW 3.5 (1.4 ~ 3.8) 4.0 (1.4 ~ 5.0) 3.5 (1.4 ~ 3.8) 4.0 (1.4 ~ 5.0)
Btu/h 11,900 (4,800 ~ 13,000) 13,600 (4,800 ~ 17,100) 11,900 (4,800 ~ 13,000) 13,600 (4,800 ~ 17,100)
kcal/h 3,010 (1,200 ~ 3,270) 3,440 (1,200 ~ 4,300) 3,010 (1,200 ~ 3,270) 3,440 (1,200 ~ 4,300)
Running Current (Rated) A5.0 - 4.8 - 4.6 5.5 - 5.3 - 5.1 5.0 - 4.8 - 4.6 5.5 - 5.3 - 5.1
Power Consumption
Rated (Min. ~ Max.) W882 (350 ~ 1,190) 985 (320 ~ 1,490) 882 (350 ~ 1,190) 985 (320 ~ 1,490)
Power Factor (Rated) %80.2 - 79.9 - 79.9 81.1 - 80.8 - 80.5 80.2 - 79.9 - 79.9 81.1 - 80.8 - 80.5
EER (Cooling) / COP (Heating)
Rated (Min. ~ Max.) W/W 3.97 (4.06 ~ 3.19) 4.06 (4.38 ~ 3.36) 3.97 (4.06 ~ 3.19) 4.06 (4.38 ~ 3.36)
Piping
Connections
Liquid mm φ6.4 φ6.4
Gas mm φ9.5 φ9.5
Drain mm φ18.0 φ18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m20 20
Max. Interunit Height Difference m15 15
Chargeless m10 10
Amount of Additional Charge of
Refrigerant g/m 20 20
Indoor Unit FTXG35LV1BW FTXG35LV1BS
Front Panel Color White Silver
Airflow Rate
H
m³/min
(cfm)
10.9 (385) 12.4 (438) 10.9 (385) 12.4 (438)
M7.8 (276) 9.6 (340) 7.8 (276) 9.6 (340)
L4.8 (168) 6.9 (245) 4.8 (168) 6.9 (245)
SL 2.9 (102) 4.1 (144) 2.9 (102) 4.1 (144)
Fan
Type Cross Flow Fan Cross Flow Fan
Motor Output W29 29
Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downwards Right, Left, Horizontal, Downwards
Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof
Running Current (Rated) A0.16 - 0.16 - 0.16 0.21 - 0.21 - 0.21 0.16 - 0.16 - 0.16 0.21 - 0.21 - 0.21
Power Consumption (Rated) W33 - 33 - 33 42 - 42 - 42 33 - 33 - 33 42 - 42 - 42
Power Factor (Rated) %93.8 - 89.6 - 85.9 90.9 - 87.0 - 83.3 93.8 - 89.6 - 85.9 90.9 - 87.0 - 83.3
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 303 × 998 × 212 303 × 998 × 212
Packaged Dimensions (H × W × D) mm 322 × 1,101 × 389 322 × 1,101 × 389
Weight (Mass) kg 12 12
Gross Weight (Gross Mass) kg 16 16
Sound
Pressure
Level H / M / L / SL dB(A) 45 / 34 / 26 / 20 45 / 37 / 29 / 20 45 / 34 / 26 / 20 45 / 37 / 29 / 20
Sound Power Level dB 59 59 59 59
Outdoor Unit RXG35L2V1B RXG35L2V1B
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 1YC23APXD 1YC23APXD
Motor Output W600 600
Refrigerant
Oil
Type FVC50K FVC50K
Charge L0.375 0.375
Refrigerant Type R-410A R-410A
Charge kg 1.05 1.05
Airflow Rate Hm³/min
(cfm)
37.0 (1,306) 31.1 (1,098) 37.0 (1,306) 31.1 (1,098)
SL 31.0 (1,094) 26.4 (932) 31.0 (1,094) 26.4 (932)
Fan Type Propeller Propeller
Motor Output W23 23
Running Current (Rated) A4.84 - 4.64 - 4.44 5.29 - 5.09 - 4.89 4.84 - 4.64 - 4.44 5.29 - 5.09 - 4.89
Power Consumption (Rated) W849 - 849 - 849 943 - 943 - 943 849 - 849 - 849 943 - 943 - 943
Power Factor (Rated) %79.7 - 79.6 - 79.7 81.0 - 80.6 - 80.4 79.7 - 79.6 - 79.7 81.0 - 80.6 - 80.4
Starting Current A5.5 5.5
Dimensions (H × W × D) mm 550 × 765 × 285 550 × 765 × 285
Packaged Dimensions (H × W × D) mm 612 × 906 × 402 612 × 906 × 402
Weight (Mass) kg 35 35
Gross Weight (Gross Mass) kg 38 38
Sound
Pressure
Level H / SL dB(A) 48 / 44 48 / 45 48 / 44 48 / 45
Sound Power Level dB 63 63 63 63
Drawing No. 3D086754 C: 3D086758
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Cooling Heating Piping Length
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB Indoor ; 20°CDB Outdoor ; 7°CDB / 6°CWB 5 m

Specifications SiBE041401E
7Specifications
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model
Indoor Unit FTXG50LV1BW FTXG50LV1BS
Outdoor Unit RXG50L2V1B RXG50L2V1B
Cooling Heating Cooling Heating
Capacity
Rated (Min. ~ Max.)
kW 4.8 (1.7 ~ 5.3) 5.8 (1.7 ~ 6.5) 4.8 (1.7 ~ 5.3) 5.8 (1.7 ~ 6.5)
Btu/h 16,400 (5,800 ~ 18,100) 19,800 (5,800 ~ 22,200) 16,400 (5,800 ~ 18,100) 19,800 (5,800 ~ 22,200)
kcal/h 4,130 (1,460 ~ 4,560) 4,990 (1,460 ~ 5,590) 4,130 (1,460 ~ 4,560) 4,990 (1,460 ~ 5,590)
Running Current (Rated) A6.5 - 6.2 - 5.9 7.4 - 7.1 - 6.8 6.5 - 6.2 - 5.9 7.4 - 7.1 - 6.8
Power Consumption
Rated (Min. ~ Max.) W1,360 (370 ~ 1,880) 1,589 (310 ~ 2,490) 1,360 (370 ~ 1,880) 1,589 (310 ~ 2,490)
Power Factor (Rated) %95.1 - 95.4 - 96.0 97.6 - 97.3 - 97.4 95.1 - 95.4 - 96.0 97.6 - 97.3 - 97.4
EER (Cooling) / COP (Heating)
Rated (Min. ~ Max.) W/W 3.53 (4.59 ~ 2.82) 3.65 (5.48 ~ 2.61) 3.53 (4.59 ~ 2.82) 3.65 (5.48 ~ 2.61)
Piping
Connections
Liquid mm φ6.4 φ6.4
Gas mm φ12.7 φ12.7
Drain mm φ18.0 φ18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m30 30
Max. Interunit Height Difference m20 20
Chargeless m10 10
Amount of Additional Charge of
Refrigerant g/m 20 20
Indoor Unit FTXG50LV1BW FTXG50LV1BS
Front Panel Color White Silver
Airflow Rate
H
m³/min
(cfm)
10.9 (385) 12.6 (446) 10.9 (385) 12.6 (446)
M8.9 (313) 10.5 (372) 8.9 (313) 10.5 (372)
L6.8 (239) 8.1 (284) 6.8 (239) 8.1 (284)
SL 3.6 (128) 5.0 (176) 3.6 (128) 5.0 (176)
Fan
Type Cross Flow Fan Cross Flow Fan
Motor Output W29 29
Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downwards Right, Left, Horizontal, Downwards
Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof
Running Current (Rated) A0.16 - 0.16 - 0.16 0.21 - 0.21 - 0.21 0.16 - 0.16 - 0.16 0.21 - 0.21 - 0.21
Power Consumption (Rated) W33 - 33 - 33 43 - 43 - 43 33 - 33 - 33 43 - 43 - 43
Power Factor (Rated) %93.8 - 89.6 - 85.9 93.1 - 89.0 - 85.3 93.8 - 89.6 - 85.9 93.1 - 89.0 - 85.3
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 303 × 998 × 212 303 × 998 × 212
Packaged Dimensions (H × W × D) mm 322 × 1,101 × 389 322 × 1,101 × 389
Weight (Mass) kg 12 12
Gross Weight (Gross Mass) kg 16 16
Sound
Pressure
Level H / M / L / SL dB(A) 46 / 40 / 35 / 32 47 / 41 / 35 / 32 46 / 40 / 35 / 32 47 / 41 / 35 / 32
Sound Power Level dB 60 60 60 60
Outdoor Unit RXG50L2V1B RXG50L2V1B
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 2YC36GXD 2YC36GXD
Motor Output W1,100 1,100
Refrigerant
Oil
Type FVC50K FVC50K
Charge L0.395 0.395
Refrigerant Type R-410A R-410A
Charge kg 1.60 1.60
Airflow Rate Hm³/min
(cfm)
49.8 (1,758) 44.8 (1,581) 49.8 (1,758) 44.8 (1,581)
SL 42.6 (1,504) 38.3 (1,352) 42.6 (1,504) 38.3 (1,352)
Fan Type Propeller Propeller
Motor Output W53 53
Running Current (Rated) A6.34 - 6.04 - 5.74 7.19 - 6.89 - 6.59 6.34 - 6.04 - 5.74 7.19 - 6.89 - 6.59
Power Consumption (Rated) W1,327 - 1,327 - 1,327 1,546 - 1,546 - 1,546 1,327 - 1,327 - 1,327 1,546 - 1,546 - 1,546
Power Factor (Rated) %95.1 - 95.5 - 96.3 97.7 - 97.6 - 97.7 95.1 - 95.5 - 96.3 97.7 - 97.6 - 97.7
Starting Current A7.4 7.4
Dimensions (H × W × D) mm 735 × 825 × 300 735 × 825 × 300
Packaged Dimensions (H × W × D) mm 797 × 992 × 437 797 × 992 × 437
Weight (Mass) kg 48 48
Gross Weight (Gross Mass) kg 52 52
Sound
Pressure
Level H / SL dB(A) 48 / 44 48 / 44 48 / 44 48 / 44
Sound Power Level dB 63 63 63 63
Drawing No. 3D086755 C: 3D086759
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Cooling Heating Piping Length
Indoor ; 27°CDB / 19°CWB
Outdoor ; 35°CDB / 24°CWB Indoor ; 20°CDB Outdoor ; 7°CDB / 6°CWB 5 m

SiBE041401E
Printed Circuit Board Connector Wiring Diagram 8
Part 3
Printed Circuit Board
Connector Wiring Diagram
1. Indoor Unit...............................................................................................9
2. Outdoor Unit..........................................................................................11
2.1 20/25/35 Class .......................................................................................11
2.2 50 Class .................................................................................................13

Indoor Unit SiBE041401E
9Printed Circuit Board Connector Wiring Diagram
1. Indoor Unit
Control PCB
(A1P)
Caution Replace the PCB if you accidentally cut the jumpers other than JB and JC.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
1) S21 Connector for centralized control (HA)
2) S25 Connector for INTELLIGENT EYE sensor PCB
3) S32 Indoor heat exchanger thermistor
4) S41 Connector for swing motors
5) S42 Connector for reduction motor (front panel mechanism) and limit switch
6) S46 Connector for signal receiver / display PCB
7) S200 Connector for fan motor
8) H1, H2, H3, Connector for terminal board (indoor - outdoor transmission)
9) FG Connector for terminal board (frame ground)
10) JB Fan speed setting when compressor stops for thermostat OFF
JC Power failure recovery function (auto-restart)
∗Refer to page 109 for detail.
11) LED A LED for service monitor (green)
12) F1U, F2U Fuse (3.15 A, 250 V)
13) V1 Varistor
S42
S41
S32
JB
JC
S200
H3H2FG
S46
S21F2U S25
LED A
V1
F1U
H1
2P357399-1