Fujitsu AIRSTAGE ARXH24KMTAP Service Manual
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Fujitsu AIRSTAGE ARXH24KMTAP Service Manual

Fujitsu AIRSTAGE ARXH24KMTAP Service Manual

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AIR CONDITIONER
Duct type
INDOOR
OUTDOOR
SERVICE MANUAL
ARXH22KMTAP
ARXH24KMTAP
AOEG22KBTB
AOEG24KBTB
SR_AR066ES_03
2023.12.18

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Summary of Contents for Fujitsu AIRSTAGE ARXH24KMTAP

  • Page 1 AIR CONDITIONER Duct type SERVICE MANUAL INDOOR ARXH22KMTAP ARXH24KMTAP OUTDOOR AOEG22KBTB AOEG24KBTB SR_AR066ES_03 2023.12.18...
  • Page 2 • For further details, please check with our authorized dealer. Trademarks ™ FGLair is trademark of FUJITSU GENERAL LIMITED in the United States, other countries or both. “AIRSTAGE Mobile” is a trademark of FUJITSU GENERAL LIMITED. Android and Google Play are trademarks of Google LLC.

  • Page 3: General Information

    CONTENTS 1. GENERAL INFORMATION 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. CONTROL AND FUNCTIONS 5. FILED WORKING...
  • Page 5 1. GENERAL INFORMATION 2023.08.31 SR_CH01_AR066ES_01...
  • Page 6 CONTENTS 1. GENERAL INFORMATION 1. Specifications....................01-1 1-1. Indoor unit ........................01-1 1-2. Outdoor unit........................01-3 2. Dimensions....................01-4 2-1. Indoor unit ........................01-4 2-2. Outdoor unit........................01-8...
  • Page 7 1. Specifications 1-1. Indoor unit Duct Type Inverter, Heat pump Model name ARXH22KMTAP ARXH24KMTAP Power supply intake Outdoor unit Voltage System power supply Frequency Available voltage range 198—264 Indoor unit power supply (from outdoor unit) k→ Rated Btu/h 20,500 23,200 Cooling k→...
  • Page 8 Duct Type Inverter, Heat pump Model name ARXH22KMTAP ARXH24KMTAP NOTES: • Specifications are based on the following conditions: – Cooling: Indoor temperature of 27°CDB/19°C→B, and outdoor temperature of 35°CDB/24°C→B. – Heating: Indoor temperature of 20°CDB/15°C→B, and outdoor temperature of 7°CDB/6°C→B. –...

  • Page 9: Outdoor Unit

    1-2. Outdoor unit Type Inverter, Heat pump Model name AOEG22KBTB AOEG24KBTB Power supply 230 V~ 50 Hz Power supply intake Outdoor unit Available voltage range 198—264 V Starting current Cooling 2,240 2,700 Airflow rate Heating 1,960 2,700 Type × Qty Propeller fan ×...
  • Page 10 2. Dimensions 2-1. Indoor unit ¢ Models: ARXH22KMTAP and ARXH24KMTAP Unit: mm Rear view 1,000 P100 × 8 = 800 Hole: × Φ4 PCD*160 Φ125 Φ4.5 P100 × 7 = 700 1,040 *: PCD (Pitch Circle Diameter) Side view (L) Top view Side view (R) Front view...

  • Page 11: Installation Space Requirement

    ¢ Installation space requirement Provide sufficient installation space for product safety. NOTE: The detailed component shape depends on the model.  Models: ARXH22KMTAP and ARXH24KMTAP Unit: mm 20 or more 300 or more 20 or more* Ceiling 2,500 or more (When no ceiling) Floor *: According to the distance between the ceiling and the unit, the construction plan of the mainte-...

  • Page 12: Maintenance Space Requirement

    ¢ Maintenance space requirement Provide sufficient maintenance space for efficient maintenance. NOTES: • Do not place any wiring or illumination in the maintenance space, as they will impede service. • The detailed component shape depends on the model.  Models: ARXH22KMTAP and ARXH24KMTAP Provide one or two maintenance accesses for the fan units and the filters or the inspections of the control box, drain pump, and the other parts.
  • Page 13 Unit: mm • Distance between the ceiling and the unit is from 20 to 300: Choose one of these methods to set up the maintenance access. Pattern A Maintenance access 1,100 Control box 1,000 100 to 200 Pattern B 1,600 or more Control box 1,000 Bottom view...
  • Page 14 2-2. Outdoor unit ¢ Model: AOEG22KBTB Unit: mm 4-M10 hole Pitch of bolts for installation Top view Side view Front view Side view Airflow Drain port Ø42 Bottom view Side view (Valve part) - (01-8) - 2-2. Outdoor unit 2. Dimensions...
  • Page 15 ¢ Model: AOEG24KBTB Unit: mm 4-M10 hole Pitch of bolts for installation Top view Side view Front view Side view Airflow Drain port Ø42 Bottom view Side view (Valve part) - (01-9) - 2-2. Outdoor unit 2. Dimensions...
  • Page 16 - (01-10) - 2-2. Outdoor unit 2. Dimensions...
  • Page 17 2. TECHNICAL DATA AND PARTS LIST 2023.08.31 SR_CH02_AR066ES_01...
  • Page 18 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: AR↓H22KMTAP and AR↓H24KMTAP .............02-2 3. Outdoor unit parts list.................02-6 3-1. Model: AOEG22KBTB ....................02-6 3-2. Model: AOEG24KBTB ....................02-10 4. Accessories ....................02-14 4-1. Indoor unit ........................02-14 4-2.
  • Page 19 • Service parts information and design are subject to change without notice for product improve- ment. • For the latest information of the service parts, refer to our Service Portal. https://fujitsu-general.force.com/portal/ • Precise figure of the service parts listed in this manual may differ from the actual service parts. - (02-1) -...
  • Page 20 2. Indoor unit parts list 2-1. Models: ARXH22KMTAP and ARXH24KMTAP ¢ Exterior parts and chassis - (02-2) - 2-1. Models: AR↓H22KMTAP and AR↓H24KMTAP 2. Indoor unit parts list...
  • Page 21 Item no. Part no. Part name Service part 9383816352 Evaporator total assy ♦ 9900892029 Thermistor (Pipe) ♦ 9378450196 Hose sub assy ♦ 9355097000 Drain pump sub assy ♦ 9351404000 Drain hose ♦ 9381565009 Drain port ♦ 9900465070 Float switch ♦ 9900890018 Pump assy ♦...
  • Page 22 ¢ Fan and PC boards 63 63 - (02-4) - 2-1. Models: AR↓H22KMTAP and AR↓H24KMTAP 2. Indoor unit parts list...
  • Page 23 Item no. Part no. Part name Service part 9355160001 Casing A sub assy ♦ 9900960049 Thermistor (Room) ♦ 9351449001 Sirocco fan assy ♦ 9604067006 DC fan motor ♦ 9381513000 Motor band A ♦ 9352730009 Motor bracket assy ♦ 9381597000 Motor band assy ♦...
  • Page 24 3. Outdoor unit parts list 3-1. Model: AOEG22KBTB ¢ Exterior parts and Chassis - (02-6) - 3-1. Model: AOEG22KBTB 3. Outdoor unit parts list...
  • Page 25 Item no. Part no. Part name Service part 9322556028 Top panel assy ♦ 9322811028 Protective net ♦ 9322552099 Cabinet right assy ♦ 9322570024 Switch cover assy ♦ 9900435028 Terminal ♦ 9709683385 Main PCB (18 model) ♦ 9709685341 Main PCB (22 model) ♦...
  • Page 26 ¢ Compressor - (02-8) - 3-1. Model: AOEG22KBTB 3. Outdoor unit parts list...
  • Page 27 Item no. Part no. Part name Service part 9322433008 Compressor assy (18 model) ♦ 9810521002 Compressor assy (22 model) ♦ 9322783004 4-way valve assy (18 model) ♦ 9383129018 4-way valve assy (22 model) ♦ 9900186029 Pressure switch (22 model only) ♦...
  • Page 28 3-2. Model: AOEG24KBTB ¢ Exterior parts and Chassis - (02-10) - 3-2. Model: AOEG24KBTB 3. Outdoor unit parts list...
  • Page 29 Item no. Part no. Part name Service part 9322556073 Top panel assy ♦ 9322811042 Protective net ♦ 9322552150 Cabinet right assy ♦ 9322570031 Switch cover assy ♦ 9900435028 Terminal ♦ 9709685358 Main PCB ♦ 9900565060 Thermistor assy (Outdoor temp.) ♦ 9900727116 Thermistor assy ♦...
  • Page 30 ¢ Compressor - (02-12) - 3-2. Model: AOEG24KBTB 3. Outdoor unit parts list...
  • Page 31 Item no. Part no. Part name Service part 9810521002 Compressor assy ♦ 9383129025 4-way valve assy ♦ 9900186029 Pressure switch ♦ 9970206009 Solenoid ♦ 9970173028 Expansion valve coil ♦ 9322463029 Pulse motor valve assy ♦ 9322474001 2-way valve assy ♦ 9387831016 3-way valve assy ♦...

  • Page 32: Outdoor Unit

    4. Accessories 4-1. Indoor unit ¢ Models: ARXH22KMTAP and ARXH24KMTAP Part name Exterior Part name Exterior Operation manual Cable tie (large) Operation manual Cable tie (medium) (CD-ROM) Installation manual Cable tie (small) →asher Drain hose insulation Coupler heat insulation Drain hose (large) Coupler heat insulation Hose band...
  • Page 33 5. Optional parts 5-1. Indoor unit ¢ Controllers Exterior Part name Model name Summary Easy finger touch operation with LCD panel. Backlit LCD enables easy →ired Remote operation in a dark room. UTY-RNRYZ* Controller →ire type: Non-polar 2-wire High visibility and easy operation. Room temperature can be accurately →ired Remote UTY-RLRY...
  • Page 34 ¢ Others Exterior Part name Model name Summary Thermo-sensor for sensing the Remote Sensor temperature of arbitrary place in the UTY-↓SZ↓ Unit room. Connecting point: CN8 on Main PCB Thermo-sensor for sensing the Remote Sensor temperature of arbitrary place in the UTY-↓SZ↓Z* Unit room.
  • Page 35 Exterior Part name Model name Summary This converter is required when connecting single split system to VRF Network UTY-VTG↓ network system. Converter Connecting point: Terminal block (Y1, Y2) on Main PCB This converter is required when Network connecting single split system to VRF Converter UTY-VTG↓V network system.

  • Page 36: Refrigerant System Diagrams

    6. Refrigerant system diagrams 6-1. Model: AOEG22KBTB Heat exchanger 3-way 2-way (INDOOR) valve valve Muffler Muffler Pressure switch Strainer 4-way valve Expansion valve Accumulator Heat exchanger Strainer (OUTDOOR) Cooling Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature)
  • Page 37 6-2. Model: AOEG24KBTB Heat exchanger 3-way 2-way (INDOOR) valve valve Pressure switch 4-way valve Strainer Expansion valve Heat exchanger Strainer (OUTDOOR) : Cooling : Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature) : Thermistor (Room temperature)
  • Page 38 7. Wiring diagrams 7-1. Indoor unit ¢ Models: ARXH22KMTAP and ARXH24KMTAP - (02-20) - 7-1. Indoor unit 7. →iring diagrams...
  • Page 39 7-2. Outdoor unit ¢ Models: AOEG22KBTB and AOEG24KBTB - (02-21) - 7-2. Outdoor unit 7. →iring diagrams...
  • Page 40 8. PC board diagrams 8-1. Models: ARXH22KMTAP and ARXH24KMTAP CONTROL UNIT 22 model: EZ-0235HSE 24 model: EZ-0236HSE TERMINAL CN8 Thermistor Characteristics. UL1007 AWG22 RED CN300-1 CN300 DC 5 V CN300-2 UL1007 AWG22 WHITE Temperature 0°C 20°C 30°C REMOTE CONTROLLER B04B-XARK-1-A (LF) (SN) Thermistor CN8-1 CN300-3...
  • Page 41 8-2. Model: AOEG22KBTB INVERTER ASSEMBLY EZ-0118YHUE EMI FILTER KRFC-13 EMI FILTER EMI FILTER 2 TURNS KRFC-13 KRFC-13 TO INDOOR UNIT 2 TURNS 1 TURN UL3271 AWG16 W400 UL1015 AWG20 UL3271 AWG16 W103 BLACK W401 WHITE WHITE COMPRESSOR UL3271 AWG16 UL1015 AWG20 Compressor W402 BLACK...
  • Page 42 8-3. Model: AOEG24KBTB INVERTER ASSEMBLY EZ-01801HUE EMI FILTER KRFC-13 EMI FILTER EMI FILTER 2 TURNS KRFC-13 KRFC-13 TO INDOOR UNIT 2 TURNS 1 TURN UL3271 AWG16 W400 UL1015 AWG20 UL3271 AWG16 W103 BLACK W401 WHITE WHITE COMPRESSOR UL3271 AWG16 UL1015 AWG20 Compressor W402 BLACK...

  • Page 43: Troubleshooting

    3. TROUBLESHOOTING 2023.09.20 SR_CH03_AR066ES_01...
  • Page 44 CONTENTS 3. TROUBLESHOOTING 1. Error code ....................03-1 1-1. How to check the error memory..................03-1 1-2. How to erase the error memory ..................03-1 1-3. Error code table (→ired remote controller)..............03-2 2. Troubleshooting with error code ...............03-3 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit).....03-3 2-2.

  • Page 45: Table Of Contents

    CONTENTS (continued) 3-5. Abnormal noise......................03-45 3-6. →ater leaking........................03-46 4. Service parts information .................03-47 4-1. Compressor........................03-47 4-2. Inverter compressor......................03-48 4-3. Outdoor unit Electronic Expansion Valve (EEV) ............03-49 4-4. Indoor unit fan motor ....................03-51 4-5. Outdoor unit fan motor....................03-52 4-6. 4-way valve coil (solenoid coil)/4-way valve ...............03-53 4-7.

  • Page 47: Error Code

    1. Error code →hen a problem occurs in the system or the connected device, the error content is notified by dis- playing the code. NOTE: This function is only available in a system with indoor or IR receiver units equipped with in- dicator lamps to show the error content.
  • Page 48 1-3. Error code table (Wired remote controller) The operation, timer, and economy indicators operate according to the error contents. For confirmation of the error contents, refer the flashing pattern as follows. Wired remote Error contents controller display E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit) E: 11.

  • Page 49: E: 11. Serial Communication Error (Serial Reverse Transfer Error) (Outdoor Unit)

    2. Troubleshooting with error code 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 11 →ired remote Indicator Error code E: 11...
  • Page 50 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) BLACK WHITE • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal L —3. • If it is abnormal, check the parts below. –...

  • Page 51: E: 11. Serial Communication Error (Serial Forward Transfer Error) (Indoor Unit)

    2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 11 →ired remote Indicator Error code E: 11 controller Main PCB Indoor unit...
  • Page 52 Check point 4. Check serial signal (Forward transfer signal) Check serial signal (Forward transfer signal) WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 30 V and AC 130 V at outdoor unit terminal 2—3. • If it is abnormal, replace main PCB. Check point 1-2.

  • Page 53: E: 12. →Ired Remote Controller Communication Error (Indoor Unit)

    2-3. E: 12. Wired remote controller communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 12 →ired remote Indicator Error code E: 12 controller Indoor unit Main PCB →hen the indoor unit cannot receive the signal from Detective actuator...

  • Page 54: E: 15. Automatic Air Flow Adjustment Error (Indoor Unit)

    2-4. E: 15. Automatic air flow adjustment error (Indoor unit) Operation indicator 1 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 15 →ired remote Indicator Error code E: 15 controller • On automatic airflow adjustment operation, when the fan speed other than 0rpm is detected at the 0rpm operation.

  • Page 55: E: 18. External Communication Error (Indoor Unit)

    2-5. E: 18. External communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 8 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 18 →ired remote Indicator Error code E: 18 controller External After receiving a signal from the external input and Detective actuator Indoor unit communication...

  • Page 56: E: 23. Combination Error (Outdoor Unit)

    2-6. E: 23. Combination error (Outdoor unit) Operation indicator 2 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 23 →ired remote Indicator Error code E: 23 controller The outdoor unit receives the serial signal of applied Detective actuator Indoor unit refrigerant information from indoor unit.

  • Page 57: E: 26. Address Setting Error In Wired Remote Controller (Indoor Unit)

    2-7. E: 26. Address setting error in wired remote controller (Indoor unit) Operation indicator 2 time flash Timer indicator 6 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 26 →ired remote Indicator Error code E: 26 controller →ired remote controller (2-wire) •...

  • Page 58: E: 29. Connected Unit Number Error (Indoor Unit)

    2-8. E: 29. Connected unit number error (Indoor unit) Operation indicator 2 time flash Timer indicator 9 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 29 →ired remote Indicator Error code E: 29 controller →ired remote controller (2-wire) →hen the number of the connected indoor unit exceeds Detective actuator the limitation.

  • Page 59: E: 32. Indoor Unit Main Pcb Error (Indoor Unit)

    2-9. E: 32. Indoor unit main PCB error (Indoor unit) Operation indicator 3 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 32 →ired remote Indicator Error code E: 32 controller →hen power is on and there is some below case. Detective actuator Indoor unit Main PCB...

  • Page 60: E: 33. Indoor Unit Motor Electricity Consumption Detection Error (Indoor Unit)

    2-10. E: 33. Indoor unit motor electricity consumption detection error (Indoor unit) Operation indicator 3 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 33 →ired remote Indicator Error code E: 33 controller Indoor unit motor electricity →hen the voltage value or the current value of the motor...

  • Page 61: E: 39. Indoor Unit Power Supply Error For Fan Motor (Indoor Unit)

    2-11. E: 39. Indoor unit power supply error for fan motor (Indoor unit) Operation indicator 3 time flash Timer indicator 9 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 39 →ired remote Indicator Error code E: 39 controller •...
  • Page 62 2-12. E: 3A. Indoor unit communication circuit (wired remote controller) error Operation indicator 3 time flash Timer indicator 10 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 3A →ired remote Indicator Error code E: 3A controller →ired remote controller (2-wire) Detect the communication error of microcomputer and Detective actuator...

  • Page 63: E: 41. Room Temperature Sensor Error (Indoor Unit)

    2-13. E: 41. Room temperature sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 41 →ired remote Indicator Error code E: 41 controller Indoor unit main PCB Room temperature thermistor is open or short is Detective actuator detected always.

  • Page 64: E: 42. Indoor Unit Heat Exchanger Sensor Error (Indoor Unit)

    2-14. E: 42. Indoor unit heat exchanger sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 42 →ired remote Indicator Error code E: 42 controller Indoor unit main PCB →hen heat exchanger temperature thermistor open or Detective actuator...

  • Page 65: E: 51. Indoor Unit Fan Motor Error (Indoor Unit)

    2-15. E: 51. Indoor unit fan motor error (Indoor unit) Operation indicator 5 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 51 →ired remote Indicator Error code E: 51 controller Power supply PCB • →hen the fan motor speed is less than 1/3 of the target fan speed for 56 seconds.

  • Page 66: E: 53. Drain Pump Error (Indoor Unit)

    2-16. E: 53. Drain pump error (Indoor unit) Operation indicator 5 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 53 →ired remote Indicator Error code E: 53 controller Indoor unit main PCB Detective actuator →hen Float switch is ON for more than 3 minutes.

  • Page 67: E: 62. Outdoor Unit Main Pcb Error (Outdoor Unit)

    2-17. E: 62. Outdoor unit main PCB error (Outdoor unit) Operation indicator 6 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 62 →ired remote Indicator Error code E: 62 controller Access to EEPROM failed due to some cause after Detective actuator Outdoor unit Main PCB...

  • Page 68: E: 63. Inverter Error (Outdoor Unit)

    2-18. E: 63. Inverter error (Outdoor unit) Operation indicator 6 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 63 →ired remote Indicator Error code E: 63 controller Detective actuator Outdoor unit Inverter PCB Error information received from inverter PCB Forecast of cause...

  • Page 69: E: 64. Pfc Circuit Error (Outdoor Unit)

    2-19. E: 64. PFC circuit error (Outdoor unit) Operation indicator 6 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 64 →ired remote Indicator Error code E: 64 controller • →hen inverter input DC voltage is higher than 425 V or lower than 80 V.

  • Page 70: E: 65. Trip Terminal L Error (Outdoor Unit)

    2-20. E: 65. Trip terminal L error (Outdoor unit) Operation indicator 6 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 65 →ired remote Indicator Error code E: 65 controller →hen the signal from FO terminal (13—15) of IPM is “L” Detective actuator Outdoor unit Main PCB...

  • Page 71: E: 71. Discharge Thermistor Error (Outdoor Unit)

    2-21. E: 71. Discharge thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 71 →ired remote Indicator Error code E: 71 controller Outdoor unit main PCB →hen discharge pipe temperature thermistor open or Detective actuator short circuit is detected at power on or while running the...

  • Page 72: E: 72. Compressor Thermistor Error (Outdoor Unit)

    2-22. E: 72. Compressor thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 72 →ired remote Indicator Error code E: 72 controller Outdoor unit main PCB →hen compressor temperature thermistor open or short Detective actuator circuit is detected at power on or while running the...

  • Page 73: E: 73. Heat Exchanger (Middle/Outlet) Temperature Thermistor Error (Outdoor Unit)

    2-23. E: 73. Heat exchanger (Middle/Outlet) temperature thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 73 →ired remote Indicator Error code E: 73 controller Heat exchanger liquid temperature •...

  • Page 74: E: 74. Outdoor Temperature Thermistor Error (Outdoor Unit)

    2-24. E: 74. Outdoor temperature thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 74 →ired remote Indicator Error code E: 74 controller Outdoor unit main PCB →hen outdoor temperature thermistor open or short Detective actuator circuit is detected at power on or while running the...

  • Page 75: E: 84. Current Sensor Error (Outdoor Unit)

    2-25. E: 84. Current sensor error (Outdoor unit) Operation indicator 8 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 84 →ired remote Indicator Error code E: 84 controller →hen input current sensor has detected 0 A, while inverter compressor is operating at higher than 50 rps, Detective actuator Outdoor unit...

  • Page 76: E: 86. High Pressure Switch Error (Outdoor Unit)

    2-26. E: 86. High pressure switch error (Outdoor unit) Operation indicator 8 time flash Timer indicator 6 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 86 →ired remote Indicator Error code E: 86 controller Outdoor unit main PCB →hen pressure switch open is detected in 10 seconds Detective actuator after the power is turned on.

  • Page 77: E: 94. Trip Detection (Outdoor Unit)

    2-27. E: 94. Trip detection (Outdoor unit) Operation indicator 9 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 94 →ired remote Indicator Error code E: 94 controller Inverter PCB Protection stop by over-current generation after inverter compressor start processing completed generated Main PCB consecutively 10 times.

  • Page 78: E: 95. Compressor Motor Control Error (Outdoor Unit)

    2-28. E: 95. Compressor motor control error (Outdoor unit) Operation indicator 9 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 95 →ired remote Indicator Error code E: 95 controller Main PCB "Protection stop by "overcurrent generation at inverter Detective actuator Outdoor unit...

  • Page 79: E: 97. Outdoor Unit Fan Motor Error (Outdoor Unit)

    2-29. E: 97. Outdoor unit fan motor error (Outdoor unit) Operation indicator 9 time flash Timer indicator 7 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 97 →ired remote Indicator Error code E: 97 controller Main PCB 1.

  • Page 80: E: 99. 4-Way Valve Error (Outdoor Unit)

    2-30. E: 99. 4-way valve error (Outdoor unit) Operation indicator 9 time flash Timer indicator 9 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 99 →ired remote Indicator Error code E: 99 controller Indoor unit main PCB →hen the indoor heat exchanger temperature is compared with the room temperature, and either Heat exchanger temperature...
  • Page 81 Check point 4. Check the solenoid coil and 4-way valve NOTE: Refer solenoid coil and 4-way valve in "Service parts information" on page 03-47. • Solenoid coil Remove from PCB and check the resistance value of coil. Resistance value is 2,780 Ω at 20°C. If it is open or abnormal resistance value, replace solenoid coil.
  • Page 82 2-31. E: A1. Discharge temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: A1 →ired remote Indicator Error code E: A1 controller Outdoor unit main PCB Protection stop by discharge temperature ≥...
  • Page 83 Check point 5. Check the refrigerant amount Check the refrigerant leakage. Check point 6. Replace the main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. - (03-37) - 2-31. E: A1. Discharge temperature error (Outdoor unit) 2.
  • Page 84 2-32. E: A3. Compressor temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: A3 →ired remote Indicator Error code E: A3 controller Outdoor unit main PCB Protection stop by compressor temperature ≥...
  • Page 85 Check point 5. Check the refrigerant amount Check the refrigerant leakage. Check point 6. Replace the main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. - (03-39) - 2-32. E: A3. Compressor temperature error (Outdoor unit) 2.
  • Page 86 3. Troubleshooting without error code 3-1. Indoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Isn’t the breaker down? • Check loose or removed connection cable. -> If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN & TECHNICAL MANUAL”.
  • Page 87 3-2. Outdoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Is the circuit breaker on or off? • Check loose or removed connection cable. If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN & TECHNICAL MANUAL”.
  • Page 88 3-3. No operation (Power is on) Setting/ Connection failure Forecast of cause External cause Electrical components defective Check point 1. Check indoor and outdoor installation condition • Indoor unit: – Check incorrect wiring between indoor unit and remote controller. – Check if there is an open cable connection.
  • Page 89 3-4. No cooling/No heating Indoor unit error Outdoor unit error Forecast of cause Effect by surrounding environment Connection pipe/Connection wire failure Refrigeration cycle failure Check point 1. Check Indoor unit • Does Indoor unit fan run in the HIGH mode? •...
  • Page 90 NOTES: • Strainer normally does not have temperature difference between inlet and outlet as shown be- low. Pipe (In) Pipe (Out) • If there is a difference like shown below, there is a possibility of inside clogged. In this case, re- place the strainer.

  • Page 91: Abnormal Noise

    3-5. Abnormal noise Abnormal installation (indoor unit/outdoor unit) Forecast of cause Fan failure (indoor unit/outdoor unit) Compressor failure (outdoor) Diagnosis method when abnormal noise is occurred Abnormal noise is coming from Outdoor Abnormal noise is coming from Indoor unit. unit. (Check and correct followings) (Check and correct followings) •...

  • Page 92: Ater Leaking

    3-6. Water leaking Erroneous installation Forecast of cause Drain hose failure Diagnosis method when water is spitting Diagnosis method when water leak occurs • Is main unit installed in stable condi- tion? Is the filter clogged? • Is main unit broken or deformed at the time of transportation or maintenance? MPa MPa •...

  • Page 93: Service Parts Information

    4. Service parts information 4-1. Compressor Diagnosis method of compressor (If outdoor unit LED displays error, refer to troubleshooting) Does not start up Stops soon after starting up Abnormal noise Check if vibration noise by Is there open or loose con- Is there open or loose con- loose bolt or contact noise of nection cable?

  • Page 94: Inverter Compressor

    4-2. Inverter compressor Check point 1. Check connection • Check terminal connection of compressor (loose or incorrect wiring) T(W) S(V) (BLACK) (WHITE) Main PCB R(U) (RED) • Check terminal connection of main PCB (loose or incorrect wiring) Main PCB W400(U) W401(V) W402(W) BLACK WHITE...

  • Page 95: Outdoor Unit Electronic Expansion Valve (Eev)

    4-3. Outdoor unit Electronic Expansion Valve (EEV) Check point 1. Check connections Check connection of connector. (Loose connector or open cable) NOTE: For details of wiring diagram, refer to "→iring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-20. Check point 2.
  • Page 96 Check point 6. Check strainer • Strainer normally does not have temperature difference between inlet and outlet as shown be- low. Pipe (In) Pipe (Out) • If there is a difference like shown below, there is a possibility of inside clogged. In this case, replace the strainer.

  • Page 97: Indoor Unit Fan Motor

    4-4. Indoor unit fan motor Check point 1. Check rotation of fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) If fan or bearing is abnormal, replace it. Check point 2. Check resistance of indoor fan motor Refer to below.

  • Page 98: Outdoor Unit Fan Motor

    4-5. Outdoor unit fan motor Check point 1. Check rotation of fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) If fan or bearing is abnormal, replace it. Check point 2. Check resistance of outdoor unit fan motor Refer to below.

  • Page 99: 4-Way Valve Coil (Solenoid Coil)/4-Way Valve

    4-6. 4-way valve coil (solenoid coil)/4-way valve Check point 1. Check connection • Check the connection of connector P60. BLUE SOLENOID COIL Check Point 2 : Check Solenoid Coil Remove P60 from PCB and check the resistance value of coil. Resistance Value ≈...

  • Page 100: Pressure Switch

    4-7. Pressure switch • Type of contact Pressure • Characteristics of pressure switch Pressure switch 1 Contact: Short Open 4.2 — 4.05 MPa Contact: Open Short 3.2 ± 0.15 MPa - (03-54) - 4-7. Pressure switch 4. Service parts information...

  • Page 101: Thermistor Resistance Values

    5. Thermistor resistance values 5-1. Indoor unit ¢ Room temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -10.0 58.25 0.73 -5.0 44.03 0.93 33.62 1.15 25.92 1.39 10.0 20.17 1.66 15.0 15.84 1.94 20.0 12.54 2.22 25.0 10.00 2.50 30.0 8.04 2.77 35.0...

  • Page 102: Outdoor Unit

    5-2. Outdoor unit ¢ Discharge temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 1,013.11 0.06 -25.0 729.09 0.09 -20.0 531.56 0.12 -15.0 392.31 0.16 -10.0 292.91 0.21 -5.0 221.09 0.28 168.60 0.36 129.84 0.46 10.0 100.91 0.57 15.0 79.12 0.71 20.0 62.55...
  • Page 103 ¢ Compressor temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 1,013.11 0.06 -25.0 729.09 0.09 -20.0 531.56 0.12 -15.0 392.31 0.16 -10.0 292.91 0.21 -5.0 221.09 0.28 168.60 0.36 129.84 0.46 10.0 100.91 0.57 15.0 79.12 0.71 20.0 62.55 0.86 25.0 49.84...
  • Page 104 ¢ Heat exchanger (Middle) temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 95.58 0.24 -25.0 68.90 0.32 -20.0 50.31 0.43 -15.0 37.19 0.57 -10.0 27.81 0.73 -5.0 21.02 0.92 16.05 1.14 12.38 1.39 10.0 9.63 1.65 15.0 7.56 1.93 20.0 5.98 2.21...
  • Page 105 ¢ Outdoor temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 224.33 0.73 -25.0 159.71 0.97 -20.0 115.24 1.25 -15.0 84.21 1.56 -10.0 62.28 1.90 -5.0 46.58 2.26 35.21 2.61 26.88 2.94 10.0 20.72 3.25 15.0 16.12 3.52 20.0 12.64 3.76 25.0 10.00...
  • Page 106 - (03-60) - 5-2. Outdoor unit 5. Thermistor resistance values...

  • Page 107: Control And Functions

    4. CONTROL AND FUNCTIONS 2023.09.20 SR_CH04_AR066ES_01...
  • Page 108 CONTENTS 4. CONTROL AND FUNCTIONS 1. Rotation number control of compressor...........04-1 1-1. Cooling operation ......................04-1 1-2. Heating operation ......................04-3 1-3. Dry operation ........................04-3 1-4. Rotation number of compressor at normal start-up ............04-4 1-5. Limitation of compressor rotation number by outdoor temperature.........04-5 2.

  • Page 109: Rotation Number Control Of Compressor

    1. Rotation number control of compressor 1-1. Cooling operation A sensor (room temperature thermistor) built in the indoor unit body will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation rotation number of the compressor. •...
  • Page 110 • Limit of maximum speed based on outdoor temperature Outdoor temperature rises Outdoor temperature drops 36°C A zone 34°C 32°C B zone 30°C 21°C C zone 19°C 12°C D zone 10°C 2°C E zone 0°C F zone Unit: rps Outdoor Indoor unit fan mode Model name temperature...

  • Page 111: Heating Operation

    1-2. Heating operation A sensor (room temperature thermistor) built in indoor unit body will usually perceive difference or variation between setting temperature and present room temperature, and controls operation rota- tion number of compressor. • If the room temperature is 6.0°C lower than a set temperature, the operation rotation number of compressor will attain to maximum performance.

  • Page 112: Rotation Number Of Compressor At Normal Start-Up

    1-4. Rotation number of compressor at normal start-up Rotation number of compressor soon after starting is controlled as below. Rotation number VI Rotation number V Rotation number IV Rotation number III Rotation number II Rotation number I Time 1 Time 2 Time 3 Time 4 Time 5...

  • Page 113: Limitation Of Compressor Rotation Number By Outdoor Temperature

    1-5. Limitation of compressor rotation number by outdoor temperature The minimum rotation number of compressor is limited by outdoor temperature as below. • Cooling/Dry mode F zone 38°C E zone 19°C D zone 10°C C zone 0°C B zone -10°C A zone Limitation of compressor Model name...
  • Page 114 • Heating mode F zone 19°C E zone 5°C D zone 0°C C zone -15°C B zone -25°C A zone Limitation of compressor Model name Outdoor temperature zone rotation number A zone 31 rps B zone 31 rps C zone 21 rps AOEG22KBTB D zone...

  • Page 115: Auto Changeover Operation

    2. Auto changeover operation →hen the air conditioner is set to AUTO mode by remote controller, operation starts in the optimum mode from among heating, cooling, dry and monitoring modes. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set be- tween 18°C and 30°C in 1.0°C steps.

  • Page 116: Operation Flow Chart

    Operation flow chart Start Ts: Setting temperarure Monitor mode Room temp. > Ts+2°C? Room temp. < Ts-2°C? Middle zone Auto change over is second or more? Operation mode before the monitor mode is cooling mode? Operation mode of Heating operation Cooling operation outdoor unit: Cooling? Thermostat remains...

  • Page 117: Fan Control

    3. Fan control Tr: Room temperature Ts: Setting temperature 3-1. Indoor fan control ¢ Fan speed Indoor fan speed is defined as below. Speed (rpm) Operation mode Fan mode ARXH22KMTAP ARXH24KMTAP HIGH 1,110 1,200 Heating LO→ QUIET S-LO→ HIGH 1,110 1,200 LO→...
  • Page 118 ¢ Heating operation Switch the airflow AUTO, and the indoor fan motor will run according to a room temperature, as be- low. On the other hand, if switched in HIGH—QUIET, the indoor motor will run at a constant airflow of HEAT operation modes QUIET, LO→, MED, HIGH as shown in “Fan speed”...
  • Page 119 ¢ Moisture return prevention control (cooling and dry mode) Switch the airflow AUTO at cooling mode, and the indoor fan motor will run as shown below. Compressor Indoor fan setting airflow Indoor fan speed S-LOW 30 (sec) - (04-11) - 3-1.

  • Page 120: Outdoor Fan Control

    3-2. Outdoor fan control ¢ Outdoor fan motor This outdoor unit has a DC fan motor. (Control method is different between AC and DC motors.) ¢ Fan speed  Model: AOEG22KBTB Fan speed is defined by outdoor temperature and compressor frequency. •...
  • Page 121  Model: AOEG24KBTB Fan speed is defined by outdoor temperature and rotation number of compressor. • Outside air temperature zone selection Outside air Outside air temperature rises temperature drops Y zone 21°C 19°C Z zone 12°C 10°C F zone 2°C 0°C G zone -8°C...

  • Page 122: Timer Operation Control

    4. Timer operation control 4-1. Wireless remote control On/Off timer Program timer Sleep timer Weekly timer ○ ○ ○ — ¢ On/Off timer • Off timer: →hen the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...

  • Page 123: Sleep Timer

    ¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped auto- matically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. •...

  • Page 124: Ired Remote Control

    4-2. Wired remote control Temperature On/Off timer Program timer Sleep timer Weekly timer Setback Timer ○ ○ ○ ○ ○ ¢ On/Off timer • Off timer: →hen the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...

  • Page 125: Weekly Timer

    ¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped auto- matically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. •...

  • Page 126: Temperature Setback Timer

    ¢ Temperature Setback Timer • The temperature setback timer only changes the set temperature for 7 days, it cannot be used to start or stop air conditioner operation. • The temperature setback timer can be set to operate up to two times per day but only one temperature setting can be used.

  • Page 127: Defrost Operation Control

    5. Defrost operation control Tn: Outdoor unit heat exchanger temperature Ta: Outdoor temperature Tn10: Temperature at 10 minutes after compressor start Tnb: Temperature before 5 minutes Triggering condition • The defrost operation starts when outdoor unit heat exchanger temperature sensor detects the temperature lower than the values shown below.

  • Page 128: Defrost Operation In Heating Operation Stopped

    5-1. Defrost operation in heating operation stopped If the outdoor unit is frosted when stopping the heating operation, it stops after performing the auto- matic defrosting operation. In this time, if the indoor unit operation lamp flashes slowly (6 sec on/2 sec off), the outdoor unit al- low the heat exchanger to defrost, and then stop.

  • Page 129: Various Control

    6. Various control 6-1. Auto restart →hen the power was interrupted by a power failure etc. during operation, the operation contents at that time are memorized and when the power is recovered, operation is automatically started with the memorized operation contents. Operation contents memorized when the power is interrupted Operation mode Setting temperature...

  • Page 130: Compressor Preheating

    6-5. Compressor preheating By preheating the compressor, warm airflow is quickly discharged when the operation is started. • Triggering condition – 30 minutes after compressor stopped. – Outdoor unit heat exchanger temperature (Tn) -2°C -4°C →hen the jumper wire (JM2) is disconnected: 7°C 5°C 6-6.

  • Page 131: Drain Pump Control

    6-8. Drain pump control ¢ Drain control for cooling operation  During the compressor in operation • Triggering condition The thermostat is turned on during cooling or dry mode. • Operation details The drain pump is turned on. • Release condition –...

  • Page 132: Overflow Control

     Overflow control • Triggering condition The float switch is turned on. • Operation details – The drain pump is turned on. – →hen the operation mode is cooling or dry, operate the followings. • The compressor is stopped. • Then indoor fan control is turned off. •...

  • Page 133: Prevention To Restart For 3 Minutes (3 Minutes St)

    6-9. Prevention to restart for 3 minutes (3 minutes st) →hen the compressor fails to start for the number of times below, it does not enter operation status for 3 minutes. Retry number Retry set number →hen the compressor fails to start in the retry set number above, the compressor is stopped. 6-10.

  • Page 134: Various Protections

    7. Various protections 7-1. Discharge gas temperature over-rise prevention control The discharge gas temperature sensor (discharge thermistor: outdoor unit side) detects the dis- charge gas temperature. • →hen the discharge temperature becomes higher than the trigger condition, the rotation number of compressor is decreased as the table below, and it continues to decrease until the discharge tem- perature becomes lower than the trigger condition.

  • Page 135: Current Release Control

    7-3. Current release control The rotation number of compressor is controlled so that the outdoor unit input current does not ex- ceeds current limit value set according to the outdoor temperature. The rotation number of compressor returns according to the operation mode, when the current be- comes lower than the release value.

  • Page 136: Indoor Unit Fan Motor Over Temperature Protection

    7-4. Indoor unit fan motor over temperature protection The fan motor over temperature protection activates after two judgments when fulfilling any of the following conditions. • Detected that the rotation number of the fan motor stays 300 rpm or less for 10 seconds after 90 seconds from the fan operation started.

  • Page 137: High Temperature And High Pressure Release Control

    7-8. High temperature and high pressure release control The compressor is controlled as follows. • Cooling mode Indoor unit heat exchanger Indoor unit heat exchanger temperature rises temperature drops 61°C Zone A 60°C 59°C Zone B 54°C Zone C Zone D Stable zone Zone E Zone...
  • Page 138 - (04-30) - 7-8. High temperature and high pressure release control 7. Various protections...
  • Page 139 5. FILED WORKING 2023.09.20 SR_CH05_AR066ES_01...
  • Page 140 CONTENTS 5. FILED WORKING 1. Function settings ..................05-1 1-1. Function settings on indoor unit..................05-1 1-2. Function settings by using remote controller ..............05-3 2. External input and output................05-9 2-1. External input........................05-10 2-2. External output ......................05-12 2-3. Setting of external input and output ................05-13 2-4.

  • Page 141: Function Settings

    1. Function settings To adjust the functions of this product according to the installation environment, various types of function settings are available. NOTE: Incorrect settings can cause a product malfunction. 1-1. Function settings on indoor unit By using some components on the PCB, you can change the function settings. Related components on the PCB and the applicable settings Component Setting content...
  • Page 142 • Switch 3: Fan delay setting (SW101) →hen the indoor unit is stopped while operating in conjunction with auxiliary heater, the indoor unit fan operation will continue for 1 minute. Switch 3 Fan delay Factory setting Enabled Disabled ♦ • Switch 4: Setting change prohibited (SW101) - (05-2) - 1-1.

  • Page 143: Function Settings By Using Remote Controller

    1-2. Function settings by using remote controller Some function settings can be changed on the remote controller. After confirming the setting proce- dure and the content of each function setting, select appropriate functions for your installation envi- ronment. ¢ Setting procedure by using remote controller Remote controller is not attached for this product.

  • Page 144: Static Pressure

    2) Static pressure Select the appropriate static pressure according to the installation conditions. Function number Setting value Setting description Factory setting 30 Pa 40 Pa 50 Pa 60 Pa 70 Pa 80 Pa 90 Pa 100 Pa 110 Pa 120 Pa 130 Pa 140 Pa 150 Pa...

  • Page 145: Factory Setting

    3) Room temperature control for indoor unit sensor NOTE: If the remote sensor unit option is selected, perform this setting. Depending on the installed environment, correction of the room temperature sensor may be re- quired. Select the appropriate control setting according to the installed environment. The temperature of the room temperature sensor is corrected as follows: Corrected temp.

  • Page 146: Auto Restart

    4) Room temperature control for wired remote controller sensor Depending on the installed environment, correction of the wire remote temperature sensor may be required. Select the appropriate control setting according to the installed environment. To change this setting, set Function 42 to Both “01”. Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
  • Page 147 7) Cold air prevention This setting is to disable the cold air prevention function during heating operation. →hen disabled, the fan setting will always follow the setting on the remote controller. (Excluding defrost mode) Function number Setting value Setting description Factory setting Enable ♦...
  • Page 148 11) Switching functions for external output terminal Functions of the external output terminal can be switched. For details, refer to “External input and output”. Function number Setting value Setting description Factory setting Operation status ♦ 01—08 (Setting prohibited) Error status Fresh air control External heater 12) Auto mode type...

  • Page 149: External Input And Output

    2. External input and output CN48 (IR receiver) Rotary switch CN65 CN75 Terminal (External in) CN47 (External out) Fig. Indoor unit PCB Fig. External Input and Output PCB Connecting point Input/Output Function Input select Input signal Operation/Stop Terminal Input Dry contact Edge Forced stop Operation/Stop...

  • Page 150: External Input

    2-1. External input • “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit. • A twisted pair cable should be used. Maximum length of cable is 150 m. • Use an external input and output cable with appropriate external dimension, depending on the number of cables to be installed.

  • Page 151: Input Signal Type

    ¢ Input signal type • Indoor unit Input signal type is only "Edge". Edge • External Input and Output PCB The input signal type can be selected. Signal type (edge or pulse) can be switched by the DIP switch 2 (S→2) on the External Input and Output PCB.

  • Page 152: External Output

    2-2. External output Use an external output cable with appropriate external dimension, depending on the number of ca- bles to be installed. ¢ Indoor unit • A twisted pair cable (22 A→G) should be used. Maximum length of cable is 25 m. •...

  • Page 153: Setting Of External Input And Output

    2-3. Setting of external input and output • Indoor unit Input Connecting point Function setting number 46 Function Operation/Stop mode 1 (Setting prohibited) Terminal Forced stop mode Operation/Stop mode 2 Output Connecting point Function setting number 60 Function Operation/Stop 01 to 08 (Setting prohibited) CN47 Error status...

  • Page 154: Details Of Control Input Function

    2-4. Details of control input function ¢ Operation/Stop mode 1 • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary switch Operation — Input of indoor unit Terminal Stop 46-00 Operation External Input and Edge...
  • Page 155 ¢ Forced stop • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary switch Forced stop (R.C. disabled) — Input of indoor unit Terminal Normal (R.C. enabled) 46-02 Forced stop (R.C.

  • Page 156: Operation/Stop Mode

    ¢ Operation/Stop mode 2 • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary switch Operation (R.C. enabled) — Input of indoor unit Terminal Stop (R.C. disabled) 46-03 Operation (R.C. enabled) External Input and Edge Ex IN 1...

  • Page 157: Forced Thermostat Off

    ¢ Forced thermostat off External Input and Output External input Input signal Command Rotary switch Thermostat off External Input and 2, B, C, D Ex IN 1 Output PCB Normal operation Ex IN 1 Compressor Room temp. Set temp. - (05-17) - 2-4.

  • Page 158: Details Of Control Output Function

    2-5. Details of control output function ¢ Operation status External Input and Function Output PCB External output Output signal Status setting Rotary switch Operation 60-00 — Output of indoor unit CN47 Stop Operation External Input and — 1, B, C, D Ex OUT 1 Output PCB Stop...

  • Page 159: Indoor Unit Fan Operation Status

    ¢ Indoor unit fan operation status External Input and Function Output PCB External output Output signal Status setting Rotary switch Fan run 60-10 — Output of indoor unit CN47 Fan stop Fan run External Input and — 2, B, D Ex OUT 2 Output PCB Fan stop...

  • Page 160: External Heater Output

    ¢ External heater output External Input and Function Output PCB External output Output signal Control setting Rotary switch Heater on 60-11 — Output of indoor unit CN47 Heater off Heater on External Input and — 2, B, C Ex OUT 3 Output PCB Heater off Output signal...

This manual is also suitable for:

Airstage arxh22kmtapAirstage aoeg22kbtbAirstage aoeg24kbtb

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