Daikin FTX-N Series User manual

Service
Manual
Inverter Pair
Wall Mounted Type FTX-N Series
SiUS041638EA
[Applied Models]
Inverter Pair : Cooling Only
Inverter Pair : Heat Pump

SiUS041638EA
iTable of Contents
Inverter Pair
Wall Mounted Type
FTX-N Series
Cooling Only
Indoor Unit
FTX30NVJU
FTX36NVJU
Outdoor Unit
RK30NMVJU
RK30NMVJUA
RK36NMVJU
RK36NMVJUA
Heat Pump
Indoor Unit
FTX30NVJU
FTX36NVJU
Outdoor Unit
RX30NMVJU
RX30NMVJUA
RX36NMVJU
RX36NMVJUA

SiUS041638EA
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. Icons Used .................................................................................................. x
Part 1 List of Functions ................................................................... 1
1. Functions.....................................................................................................2
Part 2 Specifications ....................................................................... 3
1. Specifications ..............................................................................................4
1.1 Cooling Only................................................................................................. 4
1.2 Heat Pump ................................................................................................... 6
Part 3 Printed Circuit Board Connector Wiring Diagram ................ 8
1. Indoor Unit...................................................................................................9
1.1 FTX30/36NVJU ............................................................................................ 9
2. Outdoor Unit..............................................................................................11
2.1 RK(X)30/36NMVJU(A) ............................................................................... 11
Part 4 Functions and Control......................................................... 14
1. Main Functions..........................................................................................15
1.1 Temperature Control .................................................................................. 15
1.2 Frequency Principle.................................................................................... 15
1.3 Airflow Direction Control............................................................................. 17
1.4 Fan Speed Control for Indoor Unit ............................................................. 18
1.5 Program Dry Operation .............................................................................. 19
1.6 Automatic Operation................................................................................... 20
1.7 Thermostat Control..................................................................................... 21
1.8 NIGHT SET Mode ...................................................................................... 22
1.9 ECONO Operation ..................................................................................... 22
1.10 INTELLIGENT EYE Operation ................................................................... 23
1.11 POWERFUL Operation .............................................................................. 24
1.12 Clock Setting .............................................................................................. 25
1.13 WEEKLY TIMER Operation ....................................................................... 26
1.14 Other Functions.......................................................................................... 32
2. Thermistor Functions ................................................................................33
3. Control Specification .................................................................................35
3.1 Mode Hierarchy .......................................................................................... 35
3.2 Frequency Control...................................................................................... 36
3.3 Controls at Mode Changing/Start-up.......................................................... 38
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

SiUS041638EA
iii Table of Contents
3.9 Liquid Compression Protection Function.................................................... 43
3.10 Defrost Control ........................................................................................... 44
3.11 Electronic Expansion Valve Control ........................................................... 45
3.12 Malfunctions ............................................................................................... 48
Part 5 Remote Controller ............................................................... 49
1. Remote Controller .....................................................................................50
Part 6 Service Diagnosis................................................................ 52
1. General Problem Symptoms and Check Items .........................................54
2. Troubleshooting with LED .........................................................................55
2.1 Indoor Unit.................................................................................................. 55
2.2 Outdoor Unit ............................................................................................... 55
3. Service Diagnosis .....................................................................................56
4. Troubleshooting ........................................................................................59
4.1 Error Codes and Description ...................................................................... 59
4.2 Indoor Unit PCB Abnormality ..................................................................... 60
4.3 Freeze-up Protection Control/Heating Peak-cut Control ............................ 62
4.4 Indoor Fan Motor (DC Motor) or Related Abnormality ............................... 63
4.5 Thermistor or Related Abnormality (Indoor Unit)........................................ 65
4.6 Low-voltage Detection or Over-voltage Detection...................................... 66
4.7 Signal Transmission Error (between Indoor Unit and Outdoor Unit) .......... 68
4.8 Signal Transmission Error on Outdoor Unit PCB ....................................... 70
4.9 Mismatching of Indoor Unit and Outdoor Unit ............................................ 71
4.10 Outdoor Unit PCB Abnormality................................................................... 72
4.11 OL Activation (Compressor Overload) ....................................................... 73
4.12 Compressor Lock ....................................................................................... 75
4.13 DC Fan Lock (Outdoor Fan)....................................................................... 76
4.14 Input Overcurrent Detection ....................................................................... 77
4.15 Four Way Valve Abnormality...................................................................... 78
4.16 Discharge Pipe Temperature Control......................................................... 80
4.17 High Pressure Control in Cooling ............................................................... 81
4.18 System Shutdown due to Compressor Internal Temperature
Abnormality ................................................................................................ 82
4.19 Compressor System Sensor Abnormality .................................................. 83
4.20 Position Sensor Abnormality ...................................................................... 84
4.21 CT or Related Abnormality ......................................................................... 86
4.22 Thermistor or Related Abnormality (Outdoor Unit)..................................... 88
4.23 Electrical Box Temperature Rise................................................................ 90
4.24 Radiation Fin Temperature Rise ................................................................ 91
4.25 Output Overcurrent Detection .................................................................... 92
5. Check ........................................................................................................94
5.1 Thermistor Resistance Check .................................................................... 94
5.2 Indoor Fan Motor Connector Output Check ............................................... 95
5.3 Power Supply Waveforms Check............................................................... 95
5.4 Electronic Expansion Valve Check............................................................. 96

SiUS041638EA
Table of Contents iv
5.5 Four Way Valve Performance Check ......................................................... 97
5.6 Inverter Unit Refrigerant System Check..................................................... 97
5.7 Inverter Analyzer Check ............................................................................. 98
5.8 Rotation Pulse Check on the Outdoor Unit PCB ...................................... 100
5.9 Installation Condition Check..................................................................... 101
5.10 Discharge Pressure Check....................................................................... 101
5.11 Outdoor Fan System Check ..................................................................... 102
5.12 Main Circuit Short Check.......................................................................... 102
5.13 Capacitor Voltage Check.......................................................................... 103
5.14 Power Module Check ............................................................................... 103
Part 7 Trial Operation and Field Settings.................................... 105
1. Pump Down Operation............................................................................106
2. Forced Cooling Operation .......................................................................107
3. Trial Operation ........................................................................................108
4. Field Settings ..........................................................................................109
4.1 Model Type Setting .................................................................................. 109
4.2 Temperature Display Switch .................................................................... 109
4.3 When 2 Units are Installed in 1 Room...................................................... 110
4.4 Facility Setting Switch (cooling at low outdoor temperature).................... 111
5. Silicone Grease on Power Transistor/Diode Bridge................................113
Part 8 Appendix............................................................................ 114
1. Piping Diagrams......................................................................................115
1.1 Indoor unit ................................................................................................ 115
1.2 Outdoor Unit ............................................................................................. 116
2. Wiring Diagrams......................................................................................117
2.1 Indoor Unit................................................................................................ 117
2.2 Outdoor Unit ............................................................................................. 118
3. Operation Limit........................................................................................119

Safety Cautions SiUS041638EA
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 death or serious injury can result 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 an item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates a prohibited action.
The prohibited item or action is shown in the illustration or near the symbol.
This symbol indicates an action that must be taken, or an instruction.
The instruction is shown in the illustration or near the symbol.
1.1 Warnings and Cautions Regarding Safety of Workers
This manual is for the
person in charge of
maintenance and
inspection.
Warning
Do not store equipment in a room with fire sources (e.g., naked
flames, gas appliances, electric heaters).
Be sure to disconnect the power cable from the socket before
disassembling equipment for repair.
Working on 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
inspect the circuits, do not touch any electrically charged sections of the
equipment.
If refrigerant gas is discharged during repair work, do not touch the
discharged refrigerant gas.
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 refrigerant gas leaks during repair work, ventilate the area.
Refrigerant gas may generate toxic gases when it contacts flames.

SiUS041638EA Safety Cautions
vi
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.
Do not turn the air conditioner on or off by plugging in or
unplugging the power cable.
Plugging in or unplugging the power cable 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 in a high place (more than 2 m (6.5 ft)).
Insufficient safety measures may cause a fall.
In case of R-32 / R-410A refrigerant models, be sure to use pipes,
flare nuts and tools intended for the exclusive use with 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 or 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 refrigerant system, an excessively high pressure results,
causing equipment damage and injury.
Caution
Do not repair electrical components with wet hands.
Working on the equipment with wet hands may cause an electrical shock.
Do not clean the air conditioner with water.
Washing the unit with water may cause an electrical shock.
Be sure to provide an 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.
Warning

Safety Cautions SiUS041638EA
vii
1.2 Warnings and Cautions Regarding Safety of Users
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.
Conduct welding work 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 fire sources (e.g., naked
flames, gas appliances, electric heaters).
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 are scratched or have 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 cables may cause an electrical shock or fire.
Placing heavy items on the power cable, or heating or pulling the power
cable may damage it.

SiUS041638EA 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 refrigerant 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 the
refrigerant, make sure that there is no leak.
If the leaking point cannot be located and the repair work must be
stopped, be sure to pump-down, and close the service valve, to prevent
refrigerant gas from leaking into the room. Refrigerant gas itself is
harmless, but it may generate toxic gases when it contacts flames, such
as those from fan type 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 or 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 is dusty or has a loose connection, it may cause an electrical
shock or fire.
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 combustible gas leaks and remains around the unit, it may cause a fire.
Check to see if parts and wires are mounted and connected
properly, and if 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.
A 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.
Warning

Safety Cautions SiUS041638EA
ix
Be sure to measure insulation resistance after the repair, and make
sure that the resistance is 1 M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 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.
Caution

SiUS041638EA Icons Used
x
2. Icons Used
The following icons are used to attract the attention of the reader to specific information.
Icon Type of
Information
Description
Warning
Warning Warning is used when there is danger of personal injury.
Caution
Caution Caution is used when there is danger that the reader,
through incorrect manipulation, may damage equipment,
lose data, get an unexpected result or have to restart (part
of) a procedure.
Note
Note Note provides information that is not indispensable, but
may nevertheless be valuable to the reader, such as tips
and tricks.
Reference
Reference 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.

SiUS041638EA
1List of Functions
Part 1
List of Functions
1. Functions.....................................................................................................2

SiUS041638EA Functions
List of Functions 2
1. Functions
Category Functions
FTX30/36NVJU RK30/36NMVJU(A) FTX30/36NVJU RX30/36NMVJU(A)
Category Functions
FTX30/36NVJU RK30/36NMVJU(A) FTX30/36NVJU RX30/36NMVJU(A)
Basic
Functions
Inverter (with inverter power control) Health &
Cleanliness
Air-purifying filter — —
Operation limit for cooling Refer to
P. 119
Titanium apatite deodorizing filter 
Operation limit for heating Air filter (prefilter) 
PAM control  Wipe-clean flat panel 
Standby electricity saving  Washable grille — —
Compressor Oval scroll compressor — — MOLD PROOF operation — —
Swing compressor Timer WEEKLY TIMER 
Rotary compressor — — Count up-down ON/OFF timer — —
Reluctance DC motor  24-hour ON/OFF TIMER 
Comfortable
Airflow
Power-airflow flap (horizontal blade) — — NIGHT SET mode 
Power-airflow dual flaps
(horizontal blade) 
Worry Free
(Reliability &
Durability)
Auto-restart (after power failure) 
Self-diagnosis (R/C, LED) 
Power-airflow diffuser — — Wiring error check function — —
Wide-angle louvers (vertical blade)  Anti-corrosion treatment of outdoor heat
exchanger 
Auto-swing (up and down) 
Auto-swing (right and left) Flexibility Multi-split/split type compatible indoor
unit ——
3-D airflow 
COMFORT AIRFLOW operation  H/P, C/O compatible indoor unit 
Comfort
Control
Auto fan speed  Flexible power supply correspondence — —
Indoor unit quiet operation 
Chargeless
32.8 ft
(10 m)
32.8 ft
(10 m)
NIGHT QUIET mode (automatic) — —
OUTDOOR UNIT QUIET operation
(manual)  Either side drain (right or left) 
Power selection — —
INTELLIGENT EYE operation  Low temperature cooling operation
(–10°C) (14°F) 12
Quick warming function — 
Hot-start function — °F/°C changeover R/C temperature
display (factory setting: °F) 
Automatic defrosting — 
Operation Automatic operation — Remote
Control Remote control adaptor
(normal open-pulse contact) (option) 
Program dry function 
Fan only  Remote control adaptor
(normal open contact) (option) 
Lifestyle
Convenience
POWERFUL operation (non-inverter) — —
POWERFUL operation (inverter)  DIII-NET compatible (adaptor) (option) 
Priority-room setting — — Remote
Controller
Wireless 
COOL/HEAT mode lock — — Wired (option) 
HOME LEAVE operation — —
ECONO operation 
Indoor unit ON/OFF button 
Signal receiving sign 
R/C with back light 
Temperature display — —
Note: : Available
— : Not available
1 Extend operation range to –30°C (–22°F) with
an air direction adjustment grille
(sold separately).
2 Extend operation range to –20°C (–4°F) with an
air direction adjustment grille (sold separately).

SiUS041638EA
3Specifications
Part 2
Specifications
1. Specifications ..............................................................................................4
1.1 Cooling Only................................................................................................. 4
1.2 Heat Pump ................................................................................................... 6

SiUS041638EA Specifications
Specifications 4
1. Specifications
1.1 Cooling Only
60 Hz, 208 - 230 V
Notes: 1. SL: The Quiet fan level of the airflow rate setting.
2. The data are based on the conditions shown in the table below.
Model Indoor Unit FTX30NVJU FTX30NVJU
Outdoor Unit RK30NMVJU RK30NMVJUA
Capacity Rated Btu/h 31,400 - 31,400 31,400 - 31,400
Min. ~ Max. Btu/h 10,200 - 10,200 ~ 31,400 - 31,400 10,200 - 10,200 ~ 31,400 - 31,400
Running Current (Rated) A 15.7 - 14.2 15.7 - 14.2
Power Consumption Rated W 3,188 - 3,188 3,188 - 3,188
Min. ~ Max. W 610 - 610 ~ 3,188 - 3,188 610 - 610 ~ 3,188 - 3,188
Power Factor (Rated) % 97.6 - 97.6 97.6 - 97.6
COP (Rated) W/W — —
EER (Rated) Btu/W·h 9.85 9.85
SEER / HSPF 17.50 17.50
Piping Connections
Liquid in. (mm) 1/4 (6.4) 1/4 (6.4)
Gas in. (mm) 5/8 (15.9) 5/8 (15.9)
Drain in. (mm) 5/8 (16.0) 5/8 (16.0)
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length ft (m) 98-3/8 (30) 98-3/8 (30)
Max. Interunit Height Difference ft (m) 65-5/8 (20) 65-5/8 (20)
Chargeless ft (m) 32-13/16 (10) 32-13/16 (10)
Amount of Additional Charge of
Refrigerant
oz/ft
(g/m) 0.32 (30) 0.32 (30)
Indoor Unit FTX30NVJU FTX30NVJU
Front Panel Color White White
Airflow Rate
H
cfm
(m³/min)
890 (25.2) 890 (25.2)
M 727 (20.6) 727 (20.6)
L 572 (16.2) 572 (16.2)
SL 512 (14.5) 512 (14.5)
Fan Type Cross Flow Fan Cross Flow Fan
Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downward Right, Left, Horizontal, Downward
Air Filter Removable, Washable, Mildew Proof Removable, Washable, Mildew Proof
Running Current (Rated) A 0.8 - 0.7 0.8 - 0.7
Power Consumption (Rated) W 90.0 - 90.0 90.0 - 90.0
Power Factor (Rated) % 56.2 - 55.9 56.2 - 55.9
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) in. (mm) 13-3/8 × 47-1/4 × 10-3/16 (340 × 1,200 × 259) 13-3/8 × 47-1/4 × 10-3/16 (340 × 1,200 × 259)
Packaged Dimensions (H × W × D) in. (mm) 13-7/16 × 51-9/16 × 16-7/8 (342 × 1,310 × 429) 13-7/16 × 51-9/16 × 16-7/8 (342 × 1,310 × 429)
Weight (Mass) Lbs (kg) 38 (17) 38 (17)
Gross Weight (Gross Mass) Lbs (kg) 49 (22) 49 (22)
Sound Pressure Level H / M / L / SL dB(A) 53 / 47 / 40 / 37 53 / 47 / 40 / 37
Outdoor Unit RK30NMVJU RK30NMVJUA
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 2YC63AAXD 2YC63AAXD
Motor Output W 1,920 1,920
Refrigerant Oil Type FVC50K FVC50K
Charge oz (L) 30.44 (0.900) 30.44 (0.900)
Refrigerant Type R-410A R-410A
Charge Lbs (kg) 3.64 (1.65) 3.64 (1.65)
Airflow Rate Hcfm
(m³/min)
2,528 (71.6) 2,528 (71.6)
SL — —
Fan Type Propeller Propeller
Running Current (Rated) A 14.93 - 13.50 14.93 - 13.50
Power Consumption (Rated) W 3,098 - 3,098 3,098 - 3,098
Power Factor (Rated) % 99.8 - 99.8 99.8 - 99.8
Starting Current A 15.70 15.70
Dimensions (H × W × D) in. (mm) 28-15/16 × 34-1/4 × 12-5/8 (735 × 870 × 320) 28-15/16 × 34-1/4 × 12-5/8 (735 × 870 × 320)
Packaged Dimensions (H × W × D) in. (mm) 31-7/8 × 41-9/16 × 18-1/4 (810 × 1,056 × 464) 31-7/8 × 41-9/16 × 18-1/4 (810 × 1,056 × 464)
Weight (Mass) Lbs (kg) 133 (60) 133 (60)
Weight (Gross Mass) Lbs (kg) 142 (64) 142 (64)
Sound Pressure Level H dB(A) 56 56
Drawing No. 3D107929 3D127172
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Cooling Indoor ; 80.0°FDB (26.7°CDB) / 67.0°FWB (19.4°CWB)
Outdoor ; 95.0°FDB (35°CDB) / 75°FWB (23.9°CWB)
Heating Indoor ; 70.0°FDB (21.1°CDB) / 60.0°FWB (15.6°CWB)
Outdoor ; 47°FDB (8.33°CDB) / 43.0°FWB (6.11°CWB)
Piping Length 25 ft (7.5 m)

Specifications SiUS041638EA
5Specifications
60 Hz, 208 - 230 V
Notes: 1. SL: The Quiet fan level of the airflow rate setting.
2. The data are based on the conditions shown in the table below.
Model Indoor Unit FTX36NVJU FTX36NVJU
Outdoor Unit RK36NMVJU RK36NMVJUA
Capacity Rated Btu/h 33,200 - 34,400 33,200 - 34,400
Min. ~ Max. Btu/h 10,200 - 10,200 ~ 33,200 - 34,400 10,200 - 10,200 ~ 33,200 - 34,400
Running Current (Rated) A 17 - 17 17 - 17
Power Consumption Rated W 3,458 - 3,780 3,458 - 3,780
Min. ~ Max. W 620 - 620 ~ 3,458 - 3,780 620 - 620 ~ 3,458 - 3,780
Power Factor (Rated) % 97.8 - 96.7 97.8 - 96.7
COP (Rated) W/W — —
EER (Rated) Btu/W·h 9.6 - 9.1 9.6 - 9.1
SEER / HSPF 15.90 15.90
Piping Connections
Liquid in. (mm) 1/4 (6.4) 1/4 (6.4)
Gas in. (mm) 5/8 (15.9) 5/8 (15.9)
Drain in. (mm) 5/8 (16.0) 5/8 (16.0)
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length ft (m) 98-3/8 (30) 98-3/8 (30)
Max. Interunit Height Difference ft (m) 65-5/8 (20) 65-5/8 (20)
Chargeless ft (m) 32-13/16 (10) 32-13/16 (10)
Amount of Additional Charge of
Refrigerant
oz/ft
(g/m) 0.32 (30) 0.32 (30)
Indoor Unit FTX36NVJU FTX36NVJU
Front Panel Color White White
Airflow Rate
H
cfm
(m³/min)
915 (25.9) 915 (25.9)
M 742 (21.0) 742 (21.0)
L 572 (16.2) 572 (16.2)
SL 512 (14.5) 512 (14.5)
Fan Type Cross Flow Fan Cross Flow Fan
Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downward Right, Left, Horizontal, Downward
Air Filter Removable, Washable, Mildew Proof Removable, Washable, Mildew Proof
Running Current (Rated) A 0.8 - 0.8 0.8 - 0.8
Power Consumption (Rated) W 95.0 - 95.0 95.0 - 95.0
Power Factor (Rated) % 55.7 - 55.1 55.7 - 55.1
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) in. (mm) 13-3/8 × 47-1/4 × 10-3/16 (340 × 1,200 × 259) 13-3/8 × 47-1/4 × 10-3/16 (340 × 1,200 × 259)
Packaged Dimensions (H × W × D) in. (mm) 13-7/16 × 51-9/16 × 16-7/8 (342 × 1,310 × 429) 13-7/16 × 51-9/16 × 16-7/8 (342 × 1,310 × 429)
Weight (Mass) Lbs (kg) 38 (17) 38 (17)
Gross Weight (Gross Mass) Lbs (kg) 49 (22) 49 (22)
Sound Pressure Level H / M / L / SL dB(A) 54 / 47 / 40 / 37 54 / 47 / 40 / 37
Outdoor Unit RK36NMVJU RK36NMVJUA
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 2YC63AAXD 2YC63AAXD
Motor Output W 1,920 1,920
Refrigerant Oil Type FVC50K FVC50K
Charge oz (L) 30.44 (0.900) 30.44 (0.900)
Refrigerant Type R-410A R-410A
Charge Lbs (kg) 3.64 (1.65) 3.64 (1.65)
Airflow Rate Hcfm
(m³/min)
2,811 (79.6) 2,811 (79.6)
SL — —
Fan Type Propeller Propeller
Running Current (Rated) A 16.18 - 16.25 16.18 - 16.25
Power Consumption (Rated) W 3,363 - 3,685 3,363 - 3,685
Power Factor (Rated) % 99.9 - 98.6 99.9 - 98.6
Starting Current A 17.00 17.00
Dimensions (H × W × D) in. (mm) 28-15/16 × 34-1/4 × 12-5/8 (735 × 870 × 320) 28-15/16 × 34-1/4 × 12-5/8 (735 × 870 × 320)
Packaged Dimensions (H × W × D) in. (mm) 31-7/8 × 41-9/16 × 18-1/4 (810 × 1,056 × 464) 31-7/8 × 41-9/16 × 18-1/4 (810 × 1,056 × 464)
Weight (Mass) Lbs (kg) 133 (60) 133 (60)
Weight (Gross Mass) Lbs (kg) 142 (64) 142 (64)
Sound Pressure Level H dB(A) 59 59
Drawing No. 3D107930 3D127177
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Cooling Indoor ; 80.0°FDB (26.7°CDB) / 67.0°FWB (19.4°CWB)
Outdoor ; 95.0°FDB (35°CDB) / 75°FWB (23.9°CWB)
Heating Indoor ; 70.0°FDB (21.1°CDB) / 60.0°FWB (15.6°CWB)
Outdoor ; 47°FDB (8.33°CDB) / 43.0°FWB (6.11°CWB)
Piping Length 25 ft (7.5 m)

SiUS041638EA Specifications
Specifications 6
1.2 Heat Pump
60 Hz, 208 - 230V
Notes: 1. SL: The Quiet fan level of the airflow rate setting.
2. The data are based on the conditions shown in the table below.
Model
Indoor Unit FTX30NVJU FTX30NVJU
Outdoor Unit RX30NMVJU RX30NMVJUA
Cooling Heating Cooling Heating
Capacity
Rated Btu/h 31,400 - 31,400 34,800 - 34,800 31,400 - 31,400 34,800 - 34,800
Min. ~ Max. Btu/h 10,200 - 10,200 ~ 31,400 -
31,400
10,200 - 10,200 ~ 34,800 -
34,800
10,200 - 10,200 ~ 31,400 -
31,400
10,200 - 10,200 ~ 34,800 -
34,800
Running Current (Rated) A 15.7 - 14.2 17.3 - 15.6 15.7 - 14.2 17.3 - 15.6
Power Consumption Rated W 3,188 - 3,188 3,490- 3,490 3,188 - 3,188 3,490- 3,490
Min. ~ Max. W 610 - 610 ~ 3,188 - 3,188 690 - 690 ~ 3,490 - 3,490 610 - 610 ~ 3,188 - 3,188 690 - 690 ~ 3,490 - 3,490
Power Factor (Rated) % 97.6 - 97.6 97.0 - 97.3 97.6 - 97.6 97.0 - 97.3
COP (Rated) W/W — 2.92 — 2.92
EER (Rated)
Btu/W·h 9.85 — 9.85 —
SEER / HSPF 17.50 9.30 17.50 9.30
Piping Connections
Liquid in. (mm) 1/4 (6.4) 1/4 (6.4)
Gas in. (mm) 5/8 (15.9) 5/8 (15.9)
Drain in. (mm) 5/8 (16.0) 5/8 (16.0)
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length ft (m) 98-3/8 (30) 98-3/8 (30)
Max. Interunit Height Difference ft (m) 65-5/8 (20) 65-5/8 (20)
Chargeless ft (m) 32-13/16 (10) 32-13/16 (10)
Amount of Additional Charge of
Refrigerant
oz/ft
(g/m) 0.32 (30) 0.32 (30)
Indoor Unit FTX30NVJU FTX30NVJU
Front Panel Color White White
Airflow Rate
H
cfm
(m³/min)
890 (25.2) 960 (27.2) 890 (25.2) 960 (27.2)
M 727 (20.6) 791 (22.4) 727 (20.6) 791 (22.4)
L 572 (16.2) 629 (17.8) 572 (16.2) 629 (17.8)
SL 512 (14.5) 544 (15.4) 512 (14.5) 544 (15.4)
Fan Type Cross Flow Fan Cross Flow Fan
Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downward Right, Left, Horizontal, Downward
Air Filter Removable, Washable, Mildew Proof Removable, Washable, Mildew Proof
Running Current (Rated) A 0.77 - 0.70 0.82 - 0.75 0.77 - 0.70 0.82 - 0.75
Power Consumption (Rated) W 90.0 - 90.0 95.0 - 95.0 90.0 - 90.0 95.0 - 95.0
Power Factor (Rated) % 56.2 - 55.9 55.7 - 55.1 56.2 - 55.9 55.7 - 55.1
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) in. (mm) 13-3/8 × 47-1/4 × 10-3/16 (340 × 1,200 × 259) 13-3/8 × 47-1/4 × 10-3/16 (340 × 1,200 × 259)
Packaged Dimensions (H × W × D) in. (mm) 13-7/16 × 51-9/16 × 16-7/8 (342 × 1,310 × 429) 13-7/16 × 51-9/16 × 16-7/8 (342 × 1,310 × 429)
Weight (Mass) Lbs (kg) 38 (17) 38 (17)
Gross Weight (Gross Mass) Lbs (kg) 49 (22) 49 (22)
Sound Pressure Level H / M / L / SL dB(A) 53 / 47 / 40 / 37 53 / 46 / 38 / 35 53 / 47 / 40 / 37 53 / 46 / 38 / 35
Outdoor Unit RX30NMVJU RX30NMVJUA
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 2YC63AAXD 2YC63AAXD
Motor Output W 1,920 1,920
Refrigerant Oil Type FVC50K FVC50K
Charge oz (L) 30.44 (0.900) 30.44 (0.900)
Refrigerant Type R-410A R-410A
Charge Lbs (kg) 3.64 (1.65) 3.64 (1.65)
Airflow Rate Hcfm
(m³/min)
2,528 (71.6) 2,274 (64.4) 2,528 (71.6) 2,274 (64.4)
SL ————
Fan Type Propeller Propeller
Running Current (Rated) A 14.93 - 13.50 16.48 - 14.85 14.93 - 13.50 16.48 - 14.85
Power Consumption (Rated) W 3,098 - 3,098 3,395 - 3,395 3,098 - 3,098 3,395 - 3,395
Power Factor (Rated) % 99.8 - 99.8 99.0 - 99.4 99.8 - 99.8 99.0 - 99.4
Starting Current A 17.30 17.30
Dimensions (H × W × D) in. (mm) 28-15/16 × 34-1/4 × 12-5/8 (735 × 870 × 320) 28-15/16 × 34-1/4 × 12-5/8 (735 × 870 × 320)
Packaged Dimensions (H × W × D) in. (mm) 31-7/8 × 41-9/16 × 18-1/4 (810 × 1,056 × 464) 31-7/8 × 41-9/16 × 18-1/4 (810 × 1,056 × 464)
Weight (Mass) Lbs (kg) 133 (60) 133 (60)
Gross Weight (Gross Mass) Lbs (kg) 142 (64) 142 (64)
Sound Pressure Level H dB(A) 56 58 56 58
Drawing No. 3D107927 3D127165
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Cooling Indoor ; 80.0°FDB (26.7°CDB) / 67.0°FWB (19.4°CWB)
Outdoor ; 95.0°FDB (35°CDB) / 75°FWB (23.9°CWB)
Heating Indoor ; 70.0°FDB (21.1°CDB) / 60.0°FWB (15.6°CWB)
Outdoor ; 47°FDB (8.33°CDB) / 43.0°FWB (6.11°CWB)
Piping Length 25 ft (7.5 m)

Specifications SiUS041638EA
7Specifications
60 Hz, 208 - 230V
Notes: 1. SL: The Quiet fan level of the airflow rate setting.
2. The data are based on the conditions shown in the table below.
Model
Indoor Unit FTX36NVJU FTX36NVJU
Outdoor Unit RX36NMVJU RX36NMVJUA
Cooling Heating Cooling Heating
Capacity
Rated Btu/h 33,200 - 34,400 35,200 - 36,000 33,200 - 34,400 35,200 - 36,000
Min. ~ Max. Btu/h 10,200 - 10,200 ~ 33,200 -
34,400
10,200 - 10,200 ~ 35,200 -
36,000
10,200 - 10,200 ~ 33,200 -
34,400
10,200 - 10,200 ~ 35,200 -
36,000
Running Current (Rated) A 17 - 17 18.1 - 17 17 - 17 18.1 - 17
Power Consumption Rated W 3,458 - 3,780 3,686 - 3,799 3,458 - 3,780 3,686 - 3,799
Min. ~ Max. W 620 - 620 ~ 3,458 - 3,780 690 - 690 ~ 3,686 - 3,799 620 - 620 ~ 3,458 - 3,780 690 - 690 ~ 3,686 - 3,799
Power Factor (Rated) % 97.8 - 96.7 97.9 - 97.2 97.8 - 96.7 97.9 - 97.2
COP (Rated) W/W — 2.80 - 2.78 — 2.80 - 2.78
EER (Rated)
Btu/W·h 9.6 - 9.1 — 9.6 - 9.1 —
SEER / HSPF 15.90 9.20 15.90 9.20
Piping Connections
Liquid in. (mm) 1/4 (6.4) 1/4 (6.4)
Gas in. (mm) 5/8 (15.9) 5/8 (15.9)
Drain in. (mm) 5/8 (16.0) 5/8 (16.0)
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length ft (m) 98-3/8 (30) 98-3/8 (30)
Max. Interunit Height Difference ft (m) 65-5/8 (20) 65-5/8 (20)
Chargeless ft (m) 32-13/16 (10) 32-13/16 (10)
Amount of Additional Charge of
Refrigerant
oz/ft
(g/m) 0.32 (30) 0.32 (30)
Indoor Unit FTX36NVJU FTX36NVJU
Front Panel Color White White
Airflow Rate
H
cfm
(m³/min)
915 (25.9) 960 (27.2) 915 (25.9) 960 (27.2)
M 742 (21.0) 791 (22.4) 742 (21.0) 791 (22.4)
L 572 (16.2) 629 (17.8) 572 (16.2) 629 (17.8)
SL 512 (14.5) 544 (15.4) 512 (14.5) 544 (15.4)
Fan Type Cross Flow Fan Cross Flow Fan
Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downward Right, Left, Horizontal, Downward
Air Filter Removable, Washable, Mildew Proof Removable, Washable, Mildew Proof
Running Current (Rated) A 0.82 - 0.75 0.82 - 0.75 0.82 - 0.75 0.82 - 0.75
Power Consumption (Rated) W 95.0 - 95.0 95 - 95 95.0 - 95.0 95 - 95
Power Factor (Rated) % 55.7- 55.1 55.7 - 55.1 55.7- 55.1 55.7 - 55.1
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) in. (mm) 13-3/8 × 47-1/4 × 10-3/16 (340 × 1,200 × 259) 13-3/8 × 47-1/4 × 10-3/16 (340 × 1,200 × 259)
Packaged Dimensions (H × W × D) in. (mm) 13-7/16 × 51-9/16 × 16-7/8 (342 × 1,310 × 429) 13-7/16 × 51-9/16 × 16-7/8 (342 × 1,310 × 429)
Weight (Mass) Lbs (kg) 38 (17) 38 (17)
Gross Weight (Gross Mass) Lbs (kg) 49 (22) 49 (22)
Sound Pressure Level H / M / L / SL dB(A) 54 / 47 / 40 / 37 53 / 46 / 38 / 35 54 / 47 / 40 / 37 53 / 46 / 38 / 35
Outdoor Unit RX36NMVJU RX36NMVJUA
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 2YC63AAXD 2YC63AAXD
Motor Output W 1,920 1,920
Refrigerant Oil Type FVC50K FVC50K
Charge oz (L) 30.44 (0.900) 30.44 (0.900)
Refrigerant Type R-410A R-410A
Charge Lbs (kg) 3.64 (1.65) 3.64 (1.65)
Airflow Rate Hcfm
(m³/min)
2,811 (79.6) 2,352 (66.6) 2,811 (79.6) 2,352 (66.6)
SL ————
Fan Type Propeller Propeller
Running Current (Rated) A 16.18 - 16.25 17.28 - 16.25 16.18 - 16.25 17.28 - 16.25
Power Consumption (Rated) W 3,363 - 3,685 3,591 - 3,704 3,363 - 3,685 3,591 - 3,704
Power Factor (Rated) % 99.9 - 98.6 99.9 - 99.1 99.9 - 98.6 99.9 - 99.1
Starting Current A 18.10 18.10
Dimensions (H × W × D) in. (mm) 28-15/16 × 34-1/4 × 12-5/8 (735 × 870 × 320) 28-15/16 × 34-1/4 × 12-5/8 (735 × 870 × 320)
Packaged Dimensions (H × W × D) in. (mm) 31-7/8 × 41-9/16 × 18-1/4 (810 × 1,056 × 464) 31-7/8 × 41-9/16 × 18-1/4 (810 × 1,056 × 464)
Weight (Mass) Lbs (kg) 133 (60) 133 (60)
Gross Weight (Gross Mass) Lbs (kg) 142 (64) 142 (64)
Sound Pressure Level H dB(A) 59 59 59 59
Drawing No. 3D107928 3D127166
Conversion Formulae
kcal/h = kW × 860
Btu/h = kW × 3412
cfm = m³/min × 35.3
Cooling Indoor ; 80.0°FDB (26.7°CDB) / 67.0°FWB (19.4°CWB)
Outdoor ; 95.0°FDB (35°CDB) / 75°FWB (23.9°CWB)
Heating Indoor ; 70.0°FDB (21.1°CDB) / 60.0°FWB (15.6°CWB)
Outdoor ; 47°FDB (8.33°CDB) / 43.0°FWB (6.11°CWB)
Piping Length 25 ft (7.5 m)

SiUS041638EA
Printed Circuit Board Connector Wiring Diagram 8
Part 3
Printed Circuit Board
Connector Wiring Diagram
1. Indoor Unit...................................................................................................9
1.1 FTX30/36NVJU ............................................................................................ 9
2. Outdoor Unit..............................................................................................11
2.1 RK(X)30/36NMVJU(A) ............................................................................... 11

Indoor Unit SiUS041638EA
9Printed Circuit Board Connector Wiring Diagram
1. Indoor Unit
1.1 FTX30/36NVJU
Control PCB
(PCB1)
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.
Note: The symbols in the parenthesis are the names on the appropriate wiring diagram.
1) S1 Connector for DC fan motor
2) S21 Connector for centralized control (HA)
3) S25 Connector for INTELLIGENT EYE sensor PCB (PCB4)
4) S32 Indoor heat exchanger thermistor
5) S41 Connector for swing motors
6) S46 Connector for display PCB (PCB3)
7) S47 Connector for signal receiver PCB (PCB2)
8) H1, H2, H3, FG Connector for terminal strip
9) JA Address setting jumper
Refer to page 110 for details.
10)JB Fan speed setting when compressor stops for thermostat OFF
(effective only for cooling operation)
Refer to page 110 for details.
11)JC Power failure recovery function (auto-restart)
Refer to page 110 for details.
12)LED A LED for service monitor (green)
13)FU1 (F1U),
FU2 (F2U)
Fuse (3.15 A, 250 V)
14)V1 Varistor
2P227881-8
FU1
V1
H1
H2FGH3
LED A
S32
S1S41
S46
S25
S47
S21
JB
JA
JC
FU2