Daikin SiBE04-624_B_FTXR-E User manual

Inverter Pair
Wall Mounted Type E-Series
[Applied Models]
zInverter Pair : Heat Pump
SiBE04-624_B

SiBE04-624_B
iTable of Contents
Inverter Pair
Wall Mounted Type
E-Series
zHeat Pump
Indoor Unit
FTXR28EV1B9
FTXR42EV1B9
FTXR50EV1B9
Outdoor Unit
RXR28EV1B9 RXR28EV1B8
RXR42EV1B9 RXR42EV1B8
RXR50EV1B9 RXR50EV1B8
The removal procedure for each model is separately bound. Refer to page 155 for the booklet number of
applicable model.

SiBE04-624_B
Table of Contents ii
1. Introduction .............................................................................................v
1.1 Safety Cautions ........................................................................................v
1.2 Used Icons .............................................................................................. ix
Part 1 List of Functions ................................................................ 1
1. Functions.................................................................................................2
Part 2 Specifications .................................................................... 4
1. Specifications ..........................................................................................5
Part 3 Printed Circuit Board Connector Wiring Diagram ............. 9
1. Indoor Unit.............................................................................................10
2. Outdoor Unit..........................................................................................13
Part 4 Function 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 .........................................................20
1.5 Thermostat Control.................................................................................21
1.6 “URURU” HUMIDIFYING / HUMID HEATING Operation.......................22
1.7 “SARARA” DRYING / DRY COOLING Operation ..................................30
1.8 AUTO Operation.....................................................................................32
1.9 MOISTURIZING Operation ....................................................................33
1.10 FLASH STREAMER AIR PURIFYING Operation ..................................34
1.11 FRESH AIR SUPPLY VENTILATION Operation....................................36
1.12 HOME LEAVE VENTILATION ...............................................................37
1.13 TIMER Operation ...................................................................................38
1.14 NIGHT SET Mode ..................................................................................39
1.15 COMFORT SLEEP Operation................................................................40
1.16 POWERFUL Operation ..........................................................................42
1.17 MOLD PROOF Operation ......................................................................43
1.18 MOLD SHOCK OUT Operation..............................................................45
1.19 INFORMATION DISPLAY ......................................................................48
1.20 Multi-colored Indicator Lamp ..................................................................49
1.21 Monitor Brightness Setting .....................................................................49
1.22 Child Proof Lock Setting.........................................................................49
1.23 Clock Setting ..........................................................................................50
1.24 Filter Cleaning Indicator .........................................................................50
1.25 Other Functions......................................................................................51
1.26 Table for Special Modes.........................................................................52
2. Control Specification .............................................................................54
2.1 Frequency Control..................................................................................54
2.2 Controls at Mode Changing / Start-up....................................................56
2.3 Discharge Pipe Temperature Control.....................................................58
2.4 Input Current Control..............................................................................59
2.5 Freeze-up Protection Control .................................................................60
2.6 Heating Peak-cut Control .......................................................................60

SiBE04-624_B
iii Table of Contents
2.7 Draft Prevention Control (Hot-Start Function) ........................................61
2.8 Dew Prevention Control .........................................................................61
2.9 Outdoor Fan Control...............................................................................62
2.10 Liquid Compression Protection Function................................................62
2.11 Defrost Control .......................................................................................63
2.12 Electronic Expansion Valve Control .......................................................64
Part 5 Remote Controller ............................................................ 67
1. FTXR28/42/50EV1B9............................................................................68
Part 6 Service Diagnosis............................................................. 71
1. Convenient Service Check Function .....................................................73
1.1 Indoor Unit..............................................................................................73
1.2 Outdoor Unit ...........................................................................................73
2. Troubleshooting ....................................................................................74
2.1 Error Codes and Description ..................................................................74
2.2 Air conditioner does not run. ..................................................................75
2.3 Air conditioner runs but does not cool (heat) the room. .........................78
2.4 When operation starts, safety breaker works. ........................................80
2.5 Air conditioner makes big noise and vibration........................................82
2.6 Air is not humidified enough. ..................................................................83
2.7 Lights-out of Microcomputer Status Lamp..............................................85
2.8 Indoor Unit PCB Abnormality .................................................................86
2.9 Freeze-up Protection Control or Heating Peak-cut Control....................87
2.10 Fan Motor (DC Motor) or Related Abnormality.......................................89
2.11 Streamer Unit Abnormality .....................................................................91
2.12 Thermistor or Related Abnormality (Indoor Unit)....................................93
2.13 Front Panel Open / Close Abnormality...................................................94
2.14 Humidity Sensor Abnormality .................................................................95
2.15 Refrigerant Shortage ..............................................................................96
2.16 Low-voltage Detection or Over-voltage Detection..................................98
2.17 Signal Transmission Error (between Indoor Unit and Outdoor Unit) ....100
2.18 Outdoor Unit PCB Abnormality or
Communication Circuit Abnormality .....................................................101
2.19 Signal Transmission Error on Outdoor Unit PCB .................................104
2.20 Unspecified Voltage (between Indoor Unit and Outdoor Unit) .............105
2.21 Incomplete Setting for Hose Length .....................................................106
2.22 Outdoor Unit PCB Abnormality.............................................................107
2.23 OL Activation (Compressor Overload) .................................................108
2.24 Compressor Lock .................................................................................110
2.25 DC Fan Lock ........................................................................................111
2.26 Input Overcurrent Detection .................................................................112
2.27 Four Way Valve Abnormality................................................................113
2.28 Discharge Pipe Temperature Control...................................................115
2.29 High Pressure Control in Cooling .........................................................116
2.30 Compressor System Sensor Abnormality ............................................117
2.31 Damper Abnormality.............................................................................118
2.32 Position Sensor Abnormality ................................................................119
2.33 DC Voltage / Current Sensor Abnormality............................................121
2.34 Thermistor or Related Abnormality (Outdoor Unit)...............................122
2.35 Electrical Box Temperature Rise..........................................................124

SiBE04-624_B
Table of Contents iv
2.36 Radiation Fin Temperature Rise ..........................................................126
2.37 Output Overcurrent Detection ..............................................................128
2.38 Fan Motor System Abnormality / Fan Lock ..........................................130
2.39 Heater Wire Abnormality ......................................................................131
2.40 Humidifying Thermistor Abnormality /
Humidifying Heater Temperature Abnormality .....................................132
3. Check ..................................................................................................134
3.1 Thermistor Resistance Check ..............................................................134
3.2 Fan Motor Connector Output Check ....................................................135
3.3 Humidity Sensor Check........................................................................135
3.4 Power Supply Waveforms Check.........................................................135
3.5 Electronic Expansion Valve Check.......................................................136
3.6 Four Way Valve Performance Check ...................................................137
3.7 Inverter Units Refrigerant System Check .............................................138
3.8 Inverter Analyzer Check .......................................................................138
3.9 Rotating Pulse Check on Outdoor Unit PCB ........................................140
3.10 Installation Condition Check.................................................................141
3.11 Discharge Pressure Check...................................................................141
3.12 Outdoor Fan System Check .................................................................142
3.13 Main Circuit Short Check......................................................................142
3.14 Power Module Check ...........................................................................143
3.15 Dehumidifying Solenoid Valve Check ..................................................144
Part 7 Trial Operation and Field Settings................................. 145
1. Pump Down Operation........................................................................146
2. Forced Cooling Operation ...................................................................147
3. Trial Operation ....................................................................................148
4. Field Settings ......................................................................................149
4.1 Humidifying Hose Length Setting .........................................................149
4.2 When 2 Units are Installed in 1 Room..................................................150
4.3 Jumper Settings ...................................................................................150
5. Silicon Grease on Power Transistor / Diode Bridge............................151
Part 8 Appendix......................................................................... 152
1. Piping Diagrams..................................................................................153
1.1 Indoor Unit............................................................................................153
1.2 Outdoor Unit .........................................................................................153
2. Wiring Diagrams..................................................................................154
2.1 Indoor Unit............................................................................................154
2.2 Outdoor Unit .........................................................................................154
3. Removal Procedure (Booklet No.) ......................................................155

Introduction SiBE04-624_B
v
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.

SiBE04-624_B Introduction
vi
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.
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 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.

Introduction SiBE04-624_B
vii
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.

SiBE04-624_B Introduction
viii
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.
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.

Introduction SiBE04-624_B
ix
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:
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
Icon Type of
Information
Description
Note:
Note A “note” provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
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.
Warning
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.

SiBE04-624_B
List of Functions 1
Part 1
List of Functions
1. Functions.................................................................................................2

Functions SiBE04-624_B
2List of Functions
1. Functions
Category Functions
FTXR28/42/50EV1B9 RXR28/42/50EV1B9
Category Functions
FTXR28/42/50EV1B9 RXR28/42/50EV1B9
Basic
Function
Inverter (with inverter power control) zHealth &
Clean
Air purifying filter —
Operation limit for cooling (°CDB) –10
~43
Photocatalytic deodorizing filter —
Air purifying filter with photocatalytic
deodorizing function —
Operation limit for heating (°CWB) –20
~18 Titanium apatite photocatalytic
air purifying filter z
PAM control z
Compressor Oval scroll compressor — Air supply filter z
Swing compressor zDeodorizing filter for streamer z
Rotary compressor — FLASH STREAMER AIR PURIFYING
operation z
Reluctance DC motor z
Comfortable
Airflow
Power-airflow flap — Air filter (prefilter) z
Power-airflow dual flaps zWipe-clean flat panel z
Power-airflow diffuser — Washable upper grille z
Wide-angle louvers zFilter cleaning indicator (remote controller) z
Vertical auto-swing (up and down) zMOLD PROOF operation z
Horizontal auto-swing (right and left) zMOLD SHOCK OUT operation z
3-D airflow zMold proof stick z
COMFORT AIRFLOW operation zCOMFORT SLEEP operation z
COOLING BREEZE operation zFRESH AIR SUPPLY VENTILATION
operation z
Comfort
Control
Auto fan speed z
Indoor unit quiet operation zHOME LEAVE VENTILATION z
NIGHT QUIET mode (automatic) — Timer 24-hour ON/OFF TIMER z
OUTDOOR UNIT QUIET operation (manual) — COUNTDOWN OFF TIMER z
INTELLIGENT EYE operation — NIGHT SET mode z
Quick warming function
(Preheating Operation) zWorry Free
“Reliability &
Durability”
Quiet control z
Auto-restart (after power failure) z
Hot-start function zSelf-diagnosis (digital, LED) display z
Automatic defrosting zWiring error check function —
Operation AUTO operation zAnti-corrosion treatment of outdoor heat
exchanger z
URURU HUMIDIFYING operation z
MOISTURIZING operation zFlexibility Multi-split / split type compatible indoor unit —
SARARA DRYING operation zFlexible power supply correspondence —
DRY COOLING operation zHigh ceiling application —
Program dry function — Chargeless z
Fan only — Either side drain (right or left) z
Air purifying operation zPower selection —
Lifestyle
Convenience
New POWERFUL operation (non-inverter) — Remote
Control
5-room centralized controller (option) z
Inverter POWERFUL operation zRemote control adaptor
(normal open pulse contact) (option) z
Priority-room setting —
COOL / HEAT mode lock — Remote control adaptor
(normal open contact) (option) z
HOME LEAVE operation —
ECONO operation — DIII-NET compatible (adaptor) (option) z
Indoor unit [ON/OFF] button zRemote
Controller
Wireless z
Multi-colored indicator lamp zWired —
Monitor brightness setting z
Signal receiving sign z
Temperature & humidity level INFORMATION
DISPLAY (remote controller) z
CHILDPROOF LOCK z
Note: z: Holding Functions
— : No Functions

SiBE04-624_B Functions
List of Functions 3
Category Functions
FTXR28/42/50EV1B9 RXR28/42/50EV1B8
Category Functions
FTXR28/42/50EV1B9 RXR28/42/50EV1B8
Basic
Function
Inverter (with inverter power control) zHealth &
Clean
Air purifying filter —
Operation limit for cooling (°CDB) –10
~43
Photocatalytic deodorizing filter —
Air purifying filter with photocatalytic
deodorizing function —
Operation limit for heating (°CWB) –20
~18 Titanium apatite photocatalytic
air purifying filter z
PAM control z
Compressor Oval scroll compressor — Air supply filter z
Swing compressor zDeodorizing filter for streamer z
Rotary compressor — FLASH STREAMER AIR PURIFYING
operation z
Reluctance DC motor z
Comfortable
Airflow
Power-airflow flap — Air filter (prefilter) z
Power-airflow dual flaps zWipe-clean flat panel z
Power-airflow diffuser — Washable upper grille z
Wide-angle louvers zFilter cleaning indicator (remote controller) z
Vertical auto-swing (up and down) zMOLD PROOF operation z
Horizontal auto-swing (right and left) zMOLD SHOCK OUT operation z
3-D airflow zMold proof stick z
COMFORT AIRFLOW operation zCOMFORT SLEEP operation z
COOLING BREEZE operation zFRESH AIR SUPPLY VENTILATION
operation z
Comfort
Control
Auto fan speed z
Indoor unit quiet operation zHOME LEAVE VENTILATION z
NIGHT QUIET mode (automatic) — Timer 24-hour ON/OFF TIMER z
OUTDOOR UNIT QUIET operation (manual) — COUNTDOWN OFF TIMER z
INTELLIGENT EYE operation — NIGHT SET mode z
Quick warming function
(Preheating Operation) zWorry Free
“Reliability &
Durability”
Quiet control z
Auto-restart (after power failure) z
Hot-start function zSelf-diagnosis (digital, LED) display z
Automatic defrosting zWiring error check function —
Operation AUTO operation zAnti-corrosion treatment of outdoor heat
exchanger z
URURU HUMIDIFYING operation z
MOISTURIZING operation zFlexibility Multi-split / split type compatible indoor unit —
SARARA DRYING operation zFlexible power supply correspondence —
DRY COOLING operation zHigh ceiling application —
Program dry function — Chargeless z
Fan only — Either side drain (right or left) z
Air purifying operation zPower selection —
Lifestyle
Convenience
New POWERFUL operation (non-inverter) — Remote
Control
5-room centralized controller (option) z
Inverter POWERFUL operation zRemote control adaptor
(normal open pulse contact) (option) z
Priority-room setting —
COOL / HEAT mode lock — Remote control adaptor
(normal open contact) (option) z
HOME LEAVE operation —
ECONO operation — DIII-NET compatible (adaptor) (option) z
Indoor unit [ON/OFF] button zRemote
Controller
Wireless z
Multi-colored indicator lamp zWired —
Monitor brightness setting z
Signal receiving sign z
Temperature & humidity level INFORMATION
DISPLAY (remote controller) z
CHILDPROOF LOCK z
Note: z: Holding Functions
— : No Functions

SiBE04-624_B
4Specifications
Part 2
Specifications
1. Specifications ..........................................................................................5

SiBE04-624_B Specifications
Specifications 5
1. Specifications
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model
Indoor Unit FTXR28EV1B9 FTXR42EV1B9
Outdoor Unit RXR28EV1B9 RXR42EV1B9
Cooling Heating Cooling Heating
Capacity
Rated (Min. ~ Max.)
kW 2.8 (1.55 ~ 3.60) 3.6 (1.30 ~ 5.00) 4.2 (1.55 ~ 4.60) 5.1 (1.30 ~ 5.60)
Btu/h 9,600 (5,300 ~ 12,300) 12,300 (4,400 ~ 16,400) 14,300 (5,300 ~ 15,700) 17,400 (4,400 ~ 19,100)
kcal/h 2,410 (1,330 ~ 3,100) 3,100 (1,120 ~ 4,130) 3,610 (1,330 ~ 3,960) 4,390 (1,120 ~ 4,820)
Moisture Removal L/h 1.6 — 2.3 —
Running Current (Rated) A 3.2 - 3.1 - 3.0 3.9 - 3.8 - 3.7 5.3 - 5.2 - 5.1 5.9 - 5.8 - 5.7
Power Consumption
Rated (Min. ~ Max.) W 560 (250 ~ 800) 700 (220 ~ 1,410) 1,050 (260 ~ 1,320) 1,180 (220 ~ 1,600)
Power Factor % 79.5 - 78.5 - 77.8 81.6 - 80.1 - 78.8 90.1 - 87.8 - 85.8 90.9 - 88.5 - 86.3
COP
Rated (Min. ~ Max.) W/W 5.00 (6.20 ~ 4.50) 5.14 (5.91 ~ 3.55) 4.00 (5.96 ~ 3.48) 4.32 (5.91 ~ 3.50)
Piping
Connections
Liquid mm φ 6.4 φ 6.4
Gas mm φ9.5 φ9.5
Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m 10 10
Max. Interunit Height Difference m 8 8
Amount of Additional Charge
of Refrigerant g/m Chargeless Chargeless
Indoor Unit FTXR28EV1B9 FTXR42EV1B9
Front Panel Color White White
Airflow Rate
H
m³/min
(cfm)
11.1 (392) 12.4 (438) 12.4 (438) 12.9 (456)
M 8.8 (311) 9.8 (346) 9.6 (339) 10.2 (360)
L 6.5 (230) 7.3 (258) 6.8 (240) 7.7 (272)
SL 5.7 (201) 6.5 (230) 6.0 (212) 6.8 (240)
Fan
Type Cross Flow Fan (With Saw Edge) Cross Flow Fan (With Saw Edge)
Motor Output W 57 57
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 0.15 - 0.14 - 0.13 0.15 - 0.14 - 0.13 0.17 - 0.16 - 0.15 0.17 - 0.16 - 0.15
Power Consumption (Rated) W 30 - 30 - 30 30 - 30 - 30 35 - 35 - 35 35 - 35 - 35
Power Factor % 90.9 - 93.2 - 96.2 90.9 - 93.2 - 96.2 93.6 - 95.1 - 97.2 93.6 - 95.1 - 97.2
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 305 × 890 × 209 305 × 890 × 209
Packaged Dimensions (H × W × D) mm 280 × 956 × 378 280 × 956 × 378
Weight (Mass) kg 14 14
Gross Weight (Gross Mass) kg 18 18
Sound
Pressure
Level H / M / L / SL dB(A) 39 / 33 / 26 / 23 41 / 35 / 28 / 25 42 / 35 / 27 / 24 42 / 36 / 29 / 26
Sound Power
Level HdB55575858
Outdoor Unit RXR28EV1B9 RXR42EV1B9
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 2YC36CXD 2YC36CXD
Motor Output W 1,100 1,100
Refrigerant
Oil
Model FVC50K FVC50K
Charge L 0.4 0.4
Refrigerant Model R-410A R-410A
Charge kg 1.4 1.4
Airflow Rate HH m³/min
(cfm) 33.8 (800) 31.4 (750) 36.2 (850) 31.9 (760)
Fan Type Propeller Propeller
Motor Output W 60 60
Running Current (Rated) A 3.05 - 2.96 - 2.87 3.75 - 3.66 - 3.57 5.13 - 5.04 - 4.95 5.73 - 5.64 - 5.55
Power Consumption (Rated) W 530 - 530 - 530 670 - 670 - 670 1,015 - 1,015 - 1,015 1,145 - 1,145 - 1,145
Power Factor % 79.0 - 77.8 - 76.9 81.2 - 79.6 - 78.2 89.9 - 87.6 - 85.4 90.8 - 88.3 - 86.0
Starting Current A 3.9 5.9
Dimensions (H × W × D) mm 693 × 795 × 285 693 × 795 × 285
Packaged Dimensions (H × W × D) mm 736 × 935 × 410 736 × 935 × 410
Weight (Mass) kg 48 48
Gross Weight (Gross Mass) kg 55 55
Sound
Pressure
Level H dB(A) 46 46 48 48
Sound Power
Level HdB60606262
Drawing No. 3D055811 3D055812
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 7.5 m

Specifications SiBE04-624_B
6Specifications
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model
Indoor Unit FTXR50EV1B9
Outdoor Unit RXR50EV1B9
Cooling Heating
Capacity
Rated (Min. ~ Max.)
kW 5.0 (1.55 ~ 5.50) 6.0 (1.30 ~ 6.20)
Btu/h 17,100 (5,300 ~ 18,800) 20,500 (4,400 ~ 21,200)
kcal/h 4,300 (1,330 ~ 4,730) 5,160 (1,120 ~ 5,330)
Moisture Removal L/h 2.8 —
Running Current (Rated) A 7.2 - 7.1 - 7.0 7.4 - 7.3 - 7.2
Power Consumption
Rated (Min. ~ Max.) W 1,460 (260 ~ 1,800) 1,510 (230 ~ 1,770)
Power Factor % 92.2 - 89.4 - 86.9 92.8 - 89.9 - 87.4
COP
Rated (Min. ~ Max.) W/W 3.42 (5.96 ~ 3.06) 3.97 (5.65 ~ 3.50)
Piping
Connections
Liquid mm φ 6.4
Gas mm φ9.5
Drain mm φ 18.0
Heat Insulation Both Liquid and Gas Pipes
Max. Interunit Piping Length m 10
Max. Interunit Height Difference m 8
Amount of Additional Charge
of Refrigerant g/m Chargeless
Indoor Unit FTXR50EV1B9
Front Panel Color White
Airflow Rate
H
m³/min
(cfm)
13.3 (470) 14.0 (494)
M 10.3 (364) 11.1 (392)
L 7.3 (258) 8.3 (293)
SL 6.5 (230) 7.3 (258)
Fan
Type Cross Flow Fan (With Saw Edge)
Motor Output W 57
Speed Steps 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downward
Air Filter Removable / Washable / Mildew Proof
Running Current (Rated) A 0.20 - 0.19 - 0.18 0.20 - 0.19 - 0.18
Power Consumption (Rated) W 40 - 40 - 40 40 - 40 - 40
Power Factor % 90.9 - 91.5 - 92.6 90.9 - 91.5 - 92.6
Temperature Control Microcomputer Control
Dimensions (H × W × D) mm 305 × 890 × 209
Packaged Dimensions (H × W × D) mm 280 × 956 × 378
Weight (Mass) kg 14
Gross Weight (Gross Mass) kg 18
Sound
Pressure
Level H / M / L / SL dB(A) 44 / 37 / 29 / 26 44 / 38 / 31 / 28
Sound Power
Level HdB 60 60
Outdoor Unit RXR50EV1B9
Casing Color Ivory White
Compressor
Type Hermetically Sealed Swing Type
Model 2YC36CXD
Motor Output W 1,100
Refrigerant
Oil
Model FVC50K
Charge L 0.4
Refrigerant Model R-410A
Charge kg 1.4
Airflow Rate HH m³/min
(cfm) 36.2 (850) 34.3 (810)
Fan Type Propeller
Motor Output W 60
Running Current (Rated) A 7.0 - 6.91 - 6.82 7.2 - 7.11 - 7.02
Power Consumption (Rated) W 1,420 - 1,420 - 1,420 1,470 - 1,470 - 1,470
Power Factor % 92.2 - 89.3 - 86.8 92.8 - 89.9 - 87.3
Starting Current A 7.4
Dimensions (H × W × D) mm 693 × 795 × 285
Packaged Dimensions (H × W × D) mm 736 × 935 × 410
Weight (Mass) kg 48
Gross Weight (Gross Mass) kg 55
Sound
Pressure
Level H dB(A) 48 50
Sound Power
Level HdB 62 64
Drawing No. 3D055813
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 7.5 m

SiBE04-624_B Specifications
Specifications 7
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model
Indoor Unit FTXR28EV1B9 FTXR42EV1B9
Outdoor Unit RXR28EV1B8 RXR42EV1B8
Cooling Heating Cooling Heating
Capacity
Rated (Min. ~ Max.)
kW 2.8 (1.55 ~ 3.60) 3.6 (1.30 ~ 5.00) 4.2 (1.55 ~ 4.60) 5.1 (1.30 ~ 5.60)
Btu/h 9,600 (5,300 ~ 12,300) 12,300 (4,400 ~ 17,100) 14,300 (5,300 ~ 15,700) 17,400 (4,400 ~ 19,100)
kcal/h 2,410 (1,330 ~ 3,100) 3,100 (1,120 ~ 4,300) 3,610 (1,330 ~ 3,960) 4,390 (1,120 ~ 4,820)
Moisture Removal L/h 1.6 — 2.3 —
Running Current (Rated) A 3.2 - 3.1 - 3.0 3.9 - 3.8 - 3.7 5.3 - 5.2 - 5.1 5.9 - 5.8 - 5.7
Power Consumption
Rated (Min. ~ Max.) W 560 (250 ~ 800) 700 (220 ~ 1,410) 1,050 (260 ~ 1,320) 1,180 (220 ~ 1,600)
Power Factor % 79.5 - 78.5 - 77.8 81.6 - 80.1 - 78.8 90.1 - 87.8 - 85.8 90.9 - 88.5 - 86.3
COP
Rated (Min. ~ Max.) W/W 5.00 (6.20 ~ 4.50) 5.14 (5.91 ~ 3.55) 4.00 (5.96 ~ 3.48) 4.32 (5.91 ~ 3.50)
Piping
Connections
Liquid mm φ 6.4 φ 6.4
Gas mm φ9.5 φ9.5
Drain mm φ 18.0 φ 18.0
Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes
Max. Interunit Piping Length m 10 10
Max. Interunit Height Difference m 8 8
Amount of Additional Charge
of Refrigerant g/m Chargeless Chargeless
Indoor Unit FTXR28EV1B9 FTXR42EV1B9
Front Panel Color White White
Airflow Rate
H
m³/min
(cfm)
11.1 (392) 12.4 (438) 12.4 (438) 12.9 (456)
M 8.8 (311) 9.8 (346) 9.6 (339) 10.2 (360)
L 6.5 (230) 7.3 (258) 6.8 (240) 7.7 (272)
SL 5.7 (201) 6.5 (230) 6.0 (212) 6.8 (240)
Fan
Type Cross Flow Fan Cross Flow Fan
Motor Output W 57 57
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 0.15 - 0.14 - 0.13 0.15 - 0.14 - 0.13 0.17 - 0.16 - 0.15 0.17 - 0.16 - 0.15
Power Consumption (Rated) W 30 - 30 - 30 30 - 30 - 30 35 - 35 - 35 35 - 35 - 35
Power Factor % 90.9 - 93.2 - 96.2 90.9 - 93.2 - 96.2 93.6 - 95.1 - 97.2 93.6 - 95.1 - 97.2
Temperature Control Microcomputer Control Microcomputer Control
Dimensions (H × W × D) mm 305 × 890 × 209 305 × 890 × 209
Packaged Dimensions (H × W × D) mm 280 × 956 × 378 280 × 956 × 378
Weight (Mass) kg 14 14
Gross Weight (Gross Mass) kg 18 18
Sound
Pressure
Level H / M / L / SL dB(A) 39 / 33 / 26 / 23 41 / 35 / 28 / 25 42 / 35 / 27 / 24 42 / 36 / 29 / 26
Sound Power
Level HdB55575757
Outdoor Unit RXR28EV1B8 RXR42EV1B8
Casing Color Ivory White Ivory White
Compressor
Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type
Model 2YC36CXD 2YC36CXD
Motor Output W 1,100 1,100
Refrigerant
Oil
Model FVC50K FVC50K
Charge L 0.4 0.4
Refrigerant Model R-410A R-410A
Charge kg 1.4 1.4
Airflow Rate HH m³/min
(cfm) 33.8 (800) 31.4 (750) 36.2 (850) 31.9 (760)
Fan Type Propeller Propeller
Motor Output W 60 60
Running Current (Rated) A 3.05 - 2.96 - 2.87 3.75 - 3.66 - 3.57 5.13 - 5.04 - 4.95 5.73 - 5.64 - 5.55
Power Consumption (Rated) W 530 - 530 - 530 670 - 670 - 670 1,015 - 1,015 - 1,015 1,145 - 1,145 - 1,145
Power Factor % 79.0 - 77.8 - 76.9 81.2 - 79.6 - 78.2 89.9 - 87.6 - 85.4 90.8 - 88.3 - 86.0
Starting Current A 3.9 5.9
Dimensions (H × W × D) mm 693 × 795 × 285 693 × 795 × 285
Packaged Dimensions (H × W × D) mm 736 × 935 × 410 736 × 935 × 410
Weight (Mass) kg 48 48
Gross Weight (Gross Mass) kg 55 55
Sound
Pressure
Level H dB(A) 46 46 48 48
Sound Power
Level HdB59596161
Drawing No. 3D080171A 3D080174A
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 SiBE04-624_B
8Specifications
50 Hz, 220 - 230 - 240 V
Note: The data are based on the conditions shown in the table below.
Model
Indoor Unit FTXR50EV1B9
Outdoor Unit RXR50EV1B8
Cooling Heating
Capacity
Rated (Min. ~ Max.)
kW 5.0 (1.55 ~ 5.50) 6.0 (1.30 ~ 6.20)
Btu/h 17,100 (5,300 ~ 18,800) 20,500 (4,400 ~ 21,200)
kcal/h 4,300 (1,330 ~ 4,730) 5,160 (1,120 ~ 5,330)
Moisture Removal L/h 2.8 —
Running Current (Rated) A 7.2 - 7.1 - 7.0 7.4 - 7.3 - 7.2
Power Consumption
Rated (Min. ~ Max.) W 1,460 (260 ~ 1,800) 1,510 (230 ~ 1,770)
Power Factor % 92.2 - 89.4 - 86.9 92.8 - 89.9 - 87.4
COP
Rated (Min. ~ Max.) W/W 3.42 (5.96 ~ 3.06) 3.97 (5.65 ~ 3.50)
Piping
Connections
Liquid mm φ 6.4
Gas mm φ9.5
Drain mm φ 18.0
Heat Insulation Both Liquid and Gas Pipes
Max. Interunit Piping Length m 10
Max. Interunit Height Difference m 8
Amount of Additional Charge
of Refrigerant g/m Chargeless
Indoor Unit FTXR50EV1B9
Front Panel Color White
Airflow Rate
H
m³/min
(cfm)
13.3 (470) 14.0 (494)
M 10.3 (364) 11.1 (392)
L 7.3 (258) 8.3 (293)
SL 6.5 (230) 7.3 (258)
Fan
Type Cross Flow Fan
Motor Output W 57
Speed Steps 5 Steps, Quiet, Auto
Air Direction Control Right, Left, Horizontal, Downward
Air Filter Removable / Washable / Mildew Proof
Running Current (Rated) A 0.20 - 0.19 - 0.18 0.20 - 0.19 - 0.18
Power Consumption (Rated) W 40 - 40 - 40 40 - 40 - 40
Power Factor % 90.9 - 91.5 - 92.6 90.9 - 91.5 - 92.6
Temperature Control Microcomputer Control
Dimensions (H × W × D) mm 305 × 890 × 209
Packaged Dimensions (H × W × D) mm 280 × 956 × 378
Weight (Mass) kg 14
Gross Weight (Gross Mass) kg 18
Sound
Pressure
Level H / M / L / SL dB(A) 44 / 37 / 29 / 26 44 / 38 / 31 / 28
Sound Power
Level HdB 59 59
Outdoor Unit RXR50EV1B8
Casing Color Ivory White
Compressor
Type Hermetically Sealed Swing Type
Model 2YC36CXD
Motor Output W 1,100
Refrigerant
Oil
Model FVC50K
Charge L 0.4
Refrigerant Model R-410A
Charge kg 1.4
Airflow Rate HH m³/min
(cfm) 36.2 (850) 34.3 (810)
Fan Type Propeller
Motor Output W 60
Running Current (Rated) A 7.0 - 6.91 - 6.82 7.2 - 7.11 - 7.02
Power Consumption (Rated) W 1,420 - 1,420 - 1,420 1,470 - 1,470 - 1,470
Power Factor % 92.2 - 89.3 - 86.8 92.8 - 89.9 - 87.3
Starting Current A 7.4
Dimensions (H × W × D) mm 693 × 795 × 285
Packaged Dimensions (H × W × D) mm 736 × 935 × 410
Weight (Mass) kg 48
Gross Weight (Gross Mass) kg 55
Sound
Pressure
Level H dB(A) 48 50
Sound Power
Level HdB 62 64
Drawing No. 3D080175A
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

SiBE04-624_B
Printed Circuit Board Connector Wiring Diagram 9
Part 3
Printed Circuit Board
Connector Wiring Diagram
1. Indoor Unit.............................................................................................10
2. Outdoor Unit..........................................................................................13

Indoor Unit SiBE04-624_B
10 Printed Circuit Board Connector Wiring Diagram
1. Indoor Unit
A1P: Control PCB
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) S1 Connector for fan motor
2) S21 Connector for centralized control (HA)
3) S32 Indoor heat exchanger thermistor (R1T)
4) S41 Connector for swing motors (horizontal, vertical)
5) S43 Connector for dehumidifying solenoid valve coils
6) S46 Connector for display PCB
7) S48 Connector for humidity sensor PCB
8) S51 Connector for reduction motor, limit switch (front panel)
9) S52 Connector for streamer unit PCB
10)H1, H2, H3 Connector for terminal board (indoor - outdoor transmission)
11)FG Connector for terminal board (frame ground)
12)FU1 (F1U) Fuse (3.15 A, 250 V)
13)LED A LED for service monitor (green)
14)JB
JC
Fan speed setting when compressor stops for thermostat OFF
Power failure recovery function (auto-restart)
*Refer to page 150 for detail.
15)V1 (R1V) Varistor
FU1
H1 H3
JBJC
S32
S48
S43
LED A
S52 S41 S1
S51 2P178488-1
S46
V1
S21
FG
H2