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Fujitsu AIRSTAGE ASEH09KHCBN Service Manual
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Fujitsu AIRSTAGE ASEH09KHCBN Service Manual

Fujitsu AIRSTAGE ASEH09KHCBN Service Manual

Air conditioner wall mounted type
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AIR CONDITIONER
Wall mounted type
INDOOR
ASEH09KHCBN
ASEH12KHCBN
ASEH14KHCBN
OUTDOOR
AOEH09KHCBN
SERVICE MANUAL
AOEH12KHCBN
AOEH14KHCBN
SR_AS129ES_02
2023.11.10

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Summary of Contents for Fujitsu AIRSTAGE ASEH09KHCBN

  • Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASEH09KHCBN ASEH12KHCBN ASEH14KHCBN OUTDOOR AOEH09KHCBN AOEH12KHCBN AOEH14KHCBN SR_AS129ES_02 2023.11.10...
  • Page 2 App Store is a service mark of Apple Inc., registered in the U.S. and other countries. IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under license. Copyright © 2023 Fujitsu General Limited. All rights reserved.
  • Page 3 CONTENTS 1. GENERAL INFORMATION 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. CONTROL AND FUNCTIONS 5. FILED WORKING...
  • Page 5 1. GENERAL INFORMATION 2023.10.18 SR_CH01_AS129ES_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........................01-7...
  • Page 7 1. Specifications 1-1. Indoor unit Wall mounted Type Inverter, Heat pump Model name ASEH09KHCBN ASEH12KHCBN ASEH14KHCBN Power supply intake Outdoor unit Voltage System power supply Frequency Available voltage range 207—253 Indoor unit power supply (from outdoor unit) k→ Rated Btu/h 8,500 11,900 14,300...
  • Page 8 Wall mounted Type Inverter, Heat pump Model name ASEH09KHCBN ASEH12KHCBN ASEH14KHCBN Material Polystyrene Enclosure →hite Color Approximate color of Munsell N9.25/ 295 × 894 × 280 Dimensions (H × → × D) Gross 360 × 990 × 370 14.5 →eight Gross 18.0 Liquid...
  • Page 9 1-2. Outdoor unit Type Inverter, Heat pump Model name AOEH09KHCBN AOEH12KHCBN AOEH14KHCBN Power supply 230 V~ 50 Hz Power supply intake Outdoor unit Available voltage range 207—253 V Starting current Cooling 1,850 2,630 2,530 Airflow rate Heating 1,690 2,140 2,070 Type ×...
  • Page 10 2. Dimensions 2-1. Indoor unit ¢ Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN Unit: mm Outline of unit for pipe inlet Ø65 for pipe inlet Ø65 - (01-4) - 2-1. Indoor unit 2. Dimensions...
  • Page 11  Installation space requirement Provide sufficient installation space for product safety. Unit: mm Outline of unit 75 or more 70 or more 127 or more 133 or more 1,500 or more - (01-5) - 2-1. Indoor unit 2. Dimensions...
  • Page 12 ¢ Pipe exit length from the rear Design the system considering the length of the pipes or hose exiting from the rear of the indoor unit. NOTE: Detailed shapes of the indoor unit and the tip of each pipe or hose may vary depending on the model.
  • Page 13 2-2. Outdoor unit ¢ Model: AOEH09KHCBN 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) - (01-7) - 2-2. Outdoor unit 2. Dimensions...
  • Page 14 ¢ Models: AOEH12KHCBN and AOEH14KHCBN Unit: mm 4-M10 hole Pitch of bolts for installation 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 2. TECHNICAL DATA AND PARTS LIST 2023.10.18 SR_CH02_AS129ES_01...
  • Page 16 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN ........02-2 3. Outdoor unit parts list.................02-6 3-1. Model: AOEH09KHCBN ....................02-6 3-2. Models: AOEH12KHCBN and AOEH14KHCBN............02-10 4. Accessories ....................02-14 4-1. Indoor unit ........................02-14 4-2.
  • Page 17 • 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 18 2. Indoor unit parts list 2-1. Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN ¢ Exterior parts - (02-2) - 2-1. Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN 2. Indoor unit parts list...
  • Page 19 Item no. Part no. Part name Service part 9318861020 Bracket panel ♦ 9309002074 Screw cover ♦ 9320460068 Front panel sub assy ♦ 9300454001 Intake grille assy ♦ 9318786002 →ire cover ♦ 9300394000 Air filter ♦ 9332911008 Filter holder ♦ 9300450003 Air cleaning filter assy ♦...
  • Page 20 ¢ Chassis 56 e - (02-4) - 2-1. Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN 2. Indoor unit parts list...
  • Page 21 Item no. Part no. Part name Service part 9323532175 Evaporator total assy ♦ 9379930000 Room thermistor holder ♦ 9901160059 Thermistor assy ♦ 9900720094 Terminal 3P ♦ 9712386006 Main PCB (09 model) ♦ 9712386013 Main PCB (12 model) ♦ 9712386020 Main PCB (14 model) ♦...
  • Page 22 3. Outdoor unit parts list 3-1. Model: AOEH09KHCBN ¢ Exterior parts and Chassis - (02-6) - 3-1. Model: AOEH09KHCBN 3. Outdoor unit parts list...
  • Page 23 Item no. Part no. Part name Service part 9322556066 Top panel assy ♦ 9900565060 Thermistor (Outdoor temp.) ♦ 9377854025 Protective net ♦ 9322552099 Cabinet right assy ♦ 9322570024 Switch cover assy ♦ 9901059025 Base pan heater ♦ 9901070013 Terminal 6P ♦...
  • Page 24 ¢ Compressor - (02-8) - 3-1. Model: AOEH09KHCBN 3. Outdoor unit parts list...
  • Page 25 Item no. Part no. Part name Service part 9810523006 Compressor assy ♦ 9900186029 Pressure switch ♦ 9970210006 4-way valve ♦ 9970110160 Solenoid ♦ 9970222016 Expansion valve coil ♦ 9322462015 Pulse motor valve assy ♦ 9322474001 2-way valve assy ♦ 9322850010 3-way valve assy ♦...
  • Page 26 3-2. Models: AOEH12KHCBN and AOEH14KHCBN ¢ Exterior parts and chassis - (02-10) - 3-2. Models: AOEH12KHCBN and AOEH14KHCBN 3. Outdoor unit parts list...
  • Page 27 Item no. Part no. Part name Service part 9322556073 Top panel assy ♦ 9900565060 Thermistor (Outdoor temp.) (12 model) ♦ 9900565138 Thermistor (Outdoor temp.) (14 model) ♦ 9334053003 Protective net assy (12 model) ♦ 9334053010 Protective net assy (14 model) ♦...
  • Page 28 ¢ Compressor - (02-12) - 3-2. Models: AOEH12KHCBN and AOEH14KHCBN 3. Outdoor unit parts list...
  • Page 29 Item no. Part no. Part name Service part 9810523006 Compressor (12 model) ♦ 9810521002 Compressor (14 model) ♦ 9900186029 Pressure switch ♦ 9970210006 4-way valve ♦ 9970110160 Solenoid ♦ 9970222016 Expansion valve coil ♦ 9322462015 Pulse motor valve assy (09 and 12 models) ♦...
  • Page 30 4. Accessories 4-1. Indoor unit ¢ Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN Part name Exterior Part name Exterior Self-tapping screw Operation manual (Large) Self-tapping screw Installation manual (Small) Remote controller →all hook bracket Remote controller Cloth tape holder Air cleaning filter Battery Filter holder 4-2.
  • Page 31 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 UT↔-RNR↔Z* operation in a dark room. Controller →ire type: Non-polar 2-wire High visibility and easy operation. Room temperature can be accurately →ired Remote UT↔-RLR↔...
  • Page 32 ¢ Others Exterior Part name Model name Summary Air Cleaning Air Cleaning Filter can be mounted to UTR-FA16-5 Filter the indoor unit. Use to connect with various peripheral devices and air conditioner PCB. External UT↔-↓→Z↓ Connect Kit Connecting point: CN46 and CN47 on Main PCB Required when external device is connected.
  • Page 33 6. Refrigerant system diagrams 6-1. Models: AOEH09KHCBN and AOEH12KHCBN Heat exchanger 3-way 2-way (INDOOR) valve valve Muffler Muffler Pressure switch Receiver tank Strainer 4-way valve Expansion valve Heat exchanger Strainer Accumulator (OUTDOOR) Cooling Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature)
  • Page 34 6-2. Model: AOEH14KHCBN Heat exchanger 3-way 2-way (INDOOR) valve valve Muffler Muffler Pressure switch 4-way valve Strainer 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 35 7. Wiring diagrams 7-1. Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN - (02-19) - 7-1. Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN 7. →iring diagrams...
  • Page 36 7-2. Models: AOEH09KHCBN, AOEH12KHCBN, and AOEH14KHCBN - (02-20) - 7-2. Models: AOEH09KHCBN, AOEH12KHCBN, and AOEH14KHCBN 7. →iring diagrams...
  • Page 37 8. PC board diagrams 8-1. Models: ASEH09KHCBN, ASEH12KHCBN, and ASEH14KHCBN CONTROL UNIT 09 model: EZ-0222BHSE TERMINAL 12 model: EZ-0222CHSE 14 model: EZ-0222DHSE OPTION UNIT (2-WIRE REMOTE CONTROLLER) AWG22 BLACK CN14 OUTDOOR UNIT AWG22 WHITE AC POWER POWER SUPPLY CN300 B3 (5.0)B-XASK-1-A (LF) (SN) CN301 AWG22 RED WHITE...
  • Page 38 8-2. Models: AOEH09KHCBN, AOEH12KHCBN, and AOEH14KHCBN CONTROL UNIT 09 model: EZ-02207HUE 12 model: EZ-02208HUE 14 model: EZ-02209HUE Winding Resistance EMI FILTER 1.916 Ω (20°C) EMI FILTER TRM-31-20-15E-WE EMI FILTER KRFC-13 3 TURNS TO INDOOR UNIT KRFC-13 2 TURNS AWG16 1 TURN W400 AWG22 AWG16...
  • Page 39 3. TROUBLESHOOTING 2023.11.10 SR_CH03_AS129ES_01...
  • Page 40 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 (Indoor unit and wired remote controller)..........03-2 1-4. Error code table (→ireless LAN indicator)...............03-4 1-5. How to check the error code on Mobile app ..............03-5 1-6.

  • Page 41: Table Of Contents

    CONTENTS (continued) 3. Troubleshooting without error code............03-61 3-1. Indoor unit—No power....................03-61 3-2. Outdoor unit—No power....................03-62 3-3. No operation (Power is on) ...................03-63 3-4. No cooling/No heating ....................03-64 3-5. Abnormal noise......................03-66 3-6. →ater leaking........................03-67 4. Troubleshooting with error code (For wireless LAN adapter)....03-68 4-1.
  • Page 43 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 44 1-3. Error code table (Indoor unit and 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. Indoor unit display Wired remote Error contents Operation [ ] Timer [ ] Economy [ ]...
  • Page 45 Indoor unit display Wired remote Error contents Operation [ ] Timer [ ] Economy [ ] controller (Green) (Orange) (Green) display E: 97. Outdoor unit fan motor error 9 times 7 times Continuous (Outdoor unit) E: 99. 4-way valve error (Outdoor unit) 9 times 9 times Continuous...
  • Page 46 1-4. Error code table (Wireless LAN indicator) • →ireless LAN control system diagram example Indoor unit Internet Main PCB Cloud Wireless Mobile app Parts: Outdoor unit router (Smart device) WLAN adapter • Name of parts WLAN adapter Wireless LAN label MAC: SSID: AP- PIN:...
  • Page 47 1-5. How to check the error code on Mobile app If there is an abnormality on the air conditioning, refer to as follows. →hen the (error button) on the home screen is tapped, error code and error name is displayed. Error button Error code Error name...
  • Page 48 1-6. Error code table (Mobile app) Error message Error contents Error code Serial reverse transmission error at start-up 11.1 E: 11. Serial communication error (Serial Serial reverse transmission error during reverse transfer error) (Outdoor unit) 11.2 operation Serial forward transmission error at start-up 11.3 E: 11.
  • Page 49 Error message Error contents Error code E: 74. Outdoor temperature thermistor error Outside air temp. thermistor error 74.1 (Outdoor unit) Outdoor unit current sensor 1 error (permanent E: 84. Current sensor error (Outdoor unit) 84.1 stop) E: 86. High pressure switch error (Outdoor Outdoor unit high pressure switch 1 error 86.4 unit)
  • Page 50 1-7. Error message for wireless LAN control (Mobile app) ¢ Error display If there is an abnormality on the wireless control system, refer to error messages as follows. Error message - (03-8) - 1-7. Error message for wireless LAN control (Mobile app) 1.
  • Page 51 ¢ Error message list • Registration error Cause Error Error message code Solution Communication failed. After Communication with the air conditioner failed. checking the following Check the following contents depending on the status of indoor contents, please try again unit wireless LAN indicator lamp or →LAN Adapter LED 2 and after a while.
  • Page 52 Cause Error Error message code Solution →LAN adapter password is Failed because the smartphone could not connect to the air wrong. Enter it again. conditioner. Check the following contents depending on the status of indoor →hen problems are not unit wireless LAN indicator lamp or →LAN Adapter LED 2 and resolved, there may be other operate again.
  • Page 53 Cause Error Error message code Solution • The air conditioner you are trying to register is already registered to another account. • Registration failed because the air conditioner cannot connect to the Internet. • Immediately after turning on the power of the air Air conditioner registration conditioner, wait for about 5 minutes before registering it.
  • Page 54 Cause Error Error message code Solution Registration may have failed because a problem occurred in communication with the server (cloud). 2944 Communication failed. →ait for a while and then operate again. The connected air conditioner ↔our air conditioner does not support Direct Control. 2946 cannot use the Direct control.
  • Page 55 • Sign in error Cause Error Error message code Solution Various settings could not be completed because Communication failed. After 4010 communication with the server (cloud) failed. checking the following 4410 contents, please try again after Check the following contents and operate again. a while.
  • Page 56 Cause Error Error message code Solution User information or temperature unit information could not be Loading of user information obtained because communication with the server (cloud) failed. failed. Check the following Check the following contents and operate again. contents. 4420 1.
  • Page 57 • General error Cause Error Error message code Solution 0100 Communication with the air conditioner failed. 0200 0300 0400 Check the following contents depending on the status of indoor 0500 unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
  • Page 58 Cause Error Error message code Solution The outdoor unit low noise timer information could not be obtained because communication with the server (cloud) failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
  • Page 59 Cause Error Error message code Solution The error history information could not be obtained because communication with the server (cloud) failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
  • Page 60 Cause Error Error message code Solution Air conditioner group setting has not been completed because communication with air conditioner failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
  • Page 61 Cause Error Error message code Solution Air conditioner group setting has not been completed because communication with air conditioner failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
  • Page 62 Cause Error Error message code Solution Air conditioner group setting has not been completed because communication with air conditioner failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
  • Page 63 Cause Error Error message code Solution Various settings could not be completed because Failed to update the screen. communication with the server (cloud) failed. After checking the following contents, please try again after Check the following contents and operate again. a while.

  • Page 64: Troubleshooting Without Error Code

    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 Main PCB →hen the indoor unit cannot receive the serial signal from outdoor unit more than 2 minutes after power on, Detective actuator...
  • Page 65 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) WHITE BLACK • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3. • If it is abnormal, check the parts below. –...
  • Page 66 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 Main PCB Indoor unit →hen the outdoor unit cannot receive the serial signal Detective actuator Fan motor from indoor unit more than 10 seconds.
  • Page 67 Check point 4. Check serial signal (Forward transfer signal) Check serial signal (Forward transfer signal) 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. •...
  • Page 68 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 Indoor unit Main PCB →hen the indoor unit cannot receive the signal from Detective actuator →ired remote controller more than 1 minute during →ired remote control...
  • Page 69 2-4. 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 External After receiving a signal from the external input and Detective actuator Indoor unit communication output PCB, the same signal has not been received for...
  • Page 70 2-5. E: 22. Indoor unit capacity error (Indoor unit) Operation indicator 2 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 22 →hen the total capacity of the indoor units does not Detective actuator Indoor unit main PCB match outdoor unit capacity while 3 minutes after power...
  • Page 71 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 The outdoor unit receives the serial signal of applied Detective actuator Indoor unit refrigerant information from indoor unit.
  • Page 72 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 controller (2-wire) • →hen the address number set by auto setting and manual setting are mixed in one remote controller group Detective actuator...
  • Page 73 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 controller (2-wire) →hen the number of the connected indoor unit exceeds Detective actuator the limitation.
  • Page 74 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 →hen power is on and there is some below case. Detective actuator Indoor unit Main PCB...
  • Page 75 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 Indoor unit motor electricity →hen the voltage value or the current value of the motor Detective actuator consumption detection go beyond the limits...
  • Page 76 2-11. E: 35. MANUAL AUTO button error (Indoor unit) Operation indicator 3 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 35 Indoor unit controller PCB →hen the MANUAL AUTO button becomes on for Detective actuator Indicator PCB consecutive 60 or more seconds.
  • Page 77 2-12. 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 • →hen a momentary power cut off Detective actuator Indoor unit main PCB •...
  • Page 78 2-13. 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 controller (2-wire) Detect the communication error of microcomputer and Detective actuator communication PCB.
  • Page 79 2-14. 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 Indoor unit main PCB Room temperature thermistor is open or short is Detective actuator detected always.
  • Page 80 2-15. 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 Indoor unit main PCB →hen heat exchanger temperature thermistor open or Detective actuator Heat exchanger temperature short circuit is detected.
  • Page 81 2-16. E: 44. Human sensor error Operation indicator 4 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 44 1. Detect the open condition of the sensor. Detective actuator Indoor unit main PCB 2.
  • Page 82 2-17. 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 Main PCB →hen the actual rotation number of the indoor unit fan Detective actuator Indoor unit motor is below 1/3 of the target rotation number...
  • Page 83 2-18. 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 Access to EEPROM failed due to some cause after Detective actuator Outdoor unit Main PCB...
  • Page 84 2-19. 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 Detective actuator Outdoor unit Inverter PCB Error information received from inverter PCB External cause Forecast of cause Power supply to inverter PCB wiring disconnection or...
  • Page 85 2-20. 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 • →hen inverter input DC voltage is higher than 415 V for over 3 seconds, the compressor stops. Detective actuator Outdoor unit Main PCB...
  • Page 86 2-21. E: 65. IPM error (Outdoor unit) Operation indicator 6 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 65 Main PCB 1. →hen more than normal operating current to IPM in main PCB flows, the compressor stops.
  • Page 87 Check point 4. Check compressor Check compressor. (Refer to inverter compressor in "Service parts information".) Check point 5. Replace main PCB If Check point 1 to 4 do not improve the symptom, change main PCB. - (03-45) - 2-21. E: 65. IPM error (Outdoor unit) 2.
  • Page 88 2-22. 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 Outdoor unit main PCB →hen discharge pipe temperature thermistor open or Detective actuator short circuit is detected at power on or while running the Discharge pipe temperature...
  • Page 89 2-23. 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 Outdoor unit main PCB →hen compressor temperature thermistor open or short Detective actuator circuit is detected at power on or while running the Compressor temperature thermistor...
  • Page 90 2-24. E: 73. Outdoor unit heat exchanger 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 Outdoor unit main PCB →hen heat exchanger temperature thermistor open or Detective actuator short circuit is detected at power on or while running the Heat exchanger temperature...
  • Page 91 2-25. 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 Outdoor unit main PCB →hen outdoor temperature thermistor open or short Detective actuator circuit is detected at power on or while running the Outdoor temperature thermistor...
  • Page 92 2-26. 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 →hen input current sensor has detected 0 A, while inverter compressor is operating at higher than 56 rps, Detective actuator Outdoor unit Main PCB...
  • Page 93 2-27. 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 Outdoor unit main PCB →hen pressure switch open is detected in 10 seconds Detective actuator after the power is turned on.
  • Page 94 2-28. 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 Main PCB Protection stop by over-current generation after inverter compressor start processing completed generated consecutively 10 times.
  • Page 95 2-29. 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 Main PCB 1. →hen running the compressor, if the detected rotor location is out of phase with actual rotor location more than 90°, the compressor stops.
  • Page 96 2-30. 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 Main PCB 1. →hen outdoor fan rotation speed is less than 100 rpm in 20 seconds after fan motor starts, fan motor stops.
  • Page 97 2-31. 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 Indoor unit main PCB →hen the indoor heat exchanger temperature is compared with the room temperature, and either Heat exchanger temperature following condition is detected continuously two times,...
  • Page 98 Check point 3. Check the solenoid coil and 4-way valve NOTE: Refer solenoid coil and 4-way valve in "Service parts information" on page 03-76. • Solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance value is 2.085 kΩ (at 20°C).
  • Page 99 2-32. 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 Outdoor unit main PCB Protection stop by discharge temperature ≥ 110°C Detective actuator during compressor operation generated 2 times within Discharge temperature thermistor...
  • Page 100 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. - (03-58) - 2-32. E: A1. Discharge temperature error (Outdoor unit) 2.
  • Page 101 2-33. 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 Outdoor unit main PCB Protection stop by compressor temperature ≥ 108°C Detective actuator during compressor operation generated 2 times within Compressor temperature thermistor...
  • Page 102 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. - (03-60) - 2-33. E: A3. Compressor temperature error (Outdoor unit) 2.

  • Page 103: Indoor Unit-No Power

    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 104: Outdoor Unit-No Power

    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 105: No Operation (Power Is On)

    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 106: No Cooling/No Heating

    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 107 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 108: 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 109: 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 110: Troubleshooting With Error Code (For Wireless Lan Adapter)

    4. Troubleshooting with error code (For wireless LAN adapter) 4-1. E: 18. External communication error between indoor unit and wireless LAN adapter Operation indicator 1 time flash Timer indicator 8 time flash Economy indicator Continuous flash Indoor unit Indicator →ireless LAN Flashing slowly indicator Error code...

  • Page 111: Network Communication Error Between Wireless Lan Router And Wireless Lan Adapter

    4-2. Network communication error between wireless LAN router and wireless LAN adapter Operation indicator No indication Timer indicator No indication Economy indicator No indication Indoor unit Indicator →ireless LAN Flashing slowly indicator Error code — Mobile app No indication →ireless LAN router →hen the not connection between wireless LAN adapter and wireless LAN router.
  • Page 112 Check point 4. Replace wireless LAN adapter. If check point 3 do not improve the symptom, replace the wireless LAN adapter and cancel the reg- istration of air conditioner on the Mobile app. After replacing the adapter, perform the pairing on the Mobile app. For the method of the Mobile app, refer to "Mobile app setting method"...

  • Page 113: E: 18. Communication Error

    4-3. E: 18. Communication error Operation indicator 1 time flash Timer indicator 8 time flash Economy indicator Continuous flash Indoor unit Indicator →ireless LAN Flashing slowly indicator Error code E: 18 Mobile app E: 18.1 →ireless LAN router →hen the external communication error between indoor unit and wireless LAN adapter and network →ireless LAN adapter PCB communication error between wireless LAN router and...
  • Page 114 Check point 4. Check the connection cable Check the connection cable on the wireless LAN router. -> If there is loose connector, open cable or mis-wiring, correct it. Check point 5. Check the connection status. Check the connection status to the Internet and wireless LAN router. ->...

  • Page 115: E: 18. →Ireless Lan Adapter Non-Energized

    4-4. E: 18. Wireless LAN adapter non-energized Operation indicator 1 time flash Timer indicator 8 time flash Economy indicator Continuous flash Indoor unit Indicator →ireless LAN No indication indicator Error code E: 18 Mobile app No indication Indoor unit controller PCB →hen the voltage (DC 12 V) does not output from the Detective actuator controller PCB.

  • Page 116: Mobile App Setting Method

    4-5. Mobile app setting method ¢ Air conditioner delete method →hen the wireless LAN adapter is replaced, delete of all air conditioner is necessary on the mobile app. Launch the mobile app. Tap the icon to display the Setting screen. Tap the “Air conditioner editing”.
  • Page 117 Tap the air conditioner to be deleted. Tap the Delete button. Tap the OK button. Deletion of the air conditioner registered in the mobile app is completed. - (03-75) - 4-5. Mobile app setting method 4. Troubleshooting with error code (For wireless LAN adapter)

  • Page 118: Service Parts Information

    5. Service parts information 5-1. 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 119: Inverter Compressor

    5-2. 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 120: Outdoor Unit Electronic Expansion Valve (Eev)

    5-3. 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 02-19. Check point 2.
  • Page 121 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 122: Indoor Unit Fan Motor

    5-4. 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 123: Outdoor Unit Fan Motor

    5-5. 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 fan motor Refer to below.

  • Page 124: 4-Way Valve Coil (Solenoid Coil)/4-Way Valve

    5-7. 4-way valve coil (solenoid coil)/4-way valve Check point 1. Check connection • Check the connection of connector P60. BLACK SOLENOID COIL BLACK Check Point 2 : Check solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance value ≈...

  • Page 125: Thermistor Resistance Values

    6. Thermistor resistance values 6-1. Indoor unit ¢ Room temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -10.0 58.2 0.73 -5.0 44.0 0.93 33.6 1.15 25.9 1.39 10.0 20.2 1.66 15.0 15.8 1.94 20.0 12.5 2.22 25.0 10.00 2.50 30.0 2.77 35.0 3.03...

  • Page 126: Outdoor Unit

    6-2. 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 127 ¢ Heat exchanger temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 95.57 0.24 -25.0 68.89 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 25.0...
  • Page 128 ¢ 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 129 ¢ 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 130 - (03-88) - 6-2. Outdoor unit 6. Thermistor resistance values...
  • Page 131 4. CONTROL AND FUNCTIONS 2023.11.10 SR_CH04_AS129ES_01...
  • Page 132 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 ........................04-4 1-4. Rotation number of compressor at normal start-up ............04-5 1-5. Limitation of compressor rotation number by outdoor temperature.........04-6 2.
  • Page 133 CONTENTS (continued) 8-4. Compressor temperature protection ................04-36 8-5. High pressure protection ....................04-36 8-6. Low outdoor temperature protection................04-36 8-7. High temperature and high pressure release control ............04-37...

  • Page 135: 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 136 • 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 Indoor unit fan mode Outdoor Model name temperature...

  • Page 137: 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 138: Dry Operation

    1-3. Dry operation The rotation number of compressor shall change according to the temperature, set temperature, and room temperature variation which the room temperature sensor of the indoor unit has detected as shown in the table below. Zone is defined by set temperature and room temperature. •...

  • Page 139: 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 140: 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 Unit: rps Limitation of compressor...
  • Page 141 • Heating mode F zone 19°C E zone 5°C D zone 0°C C zone -15°C B zone -25°C A zone Unit: rps Limitation of compressor Model name Outdoor temperature zone rotation number A zone B zone AOEH09KHCBN C zone AOEH12KHCBN D zone E zone F zone...

  • Page 142: 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 143 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 144: 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 Fan mode mode ASEH09KHCBN ASEH12KHCBN ASEH14KHCBN PO→ERFUL 1,380 1,380 1,430 HIGH 1,240 1,240 1,280 MED—HIGH 1,120 1,120...
  • Page 145 ¢ Cooling operation Switch the airflow AUTO, and indoor fan motor will run according to room temperature, as below. On the other hand, if switched in HIGH—QUIET, indoor motor will run at a constant airflow of COOL operation modes QUIET, LO→, MED, HIGH as shown in “Fan speed” above. Airflow change over (Cooling: Auto) Tr - Ts ≥...
  • Page 146 ¢ Cool air prevention control (heating mode) The maximum value of the indoor fan speed is set as shown below, based on the detected tempera- ture by the indoor heat exchanger sensor on heating mode. • Normal operation Indoor heat exchanger temperature rises Indoor heat exchanger HIGH...
  • Page 147 • Powerful operation Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL temperature drops 42°C 37°C HIGH 39°C 34°C 37°C 32°C Cool air prevention or setting fan mode* 30°C 28°C S-LOW *: Lower speed is selected. 7 minutes later: Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL...

  • Page 148: 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: AOEH09KHCBN Fan speed is defined by outdoor temperature and rotation number of compressor. •...
  • Page 149  Model: AOEH12KHCBN 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 150  Model: AOEH14KHCBN 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 151: Louver Control

    4. Louver control 4-1. Horizontal louver control Each time the button is pressed, the airflow direction range will change as below: Side view • Remote controller display is not changed. • Up/down airflow direction is set automatically as shown, in accordance with the type of operation selected.

  • Page 152: Swing Operation

    4-3. Swing operation • To select up/down airflow swing operation →hen the swing signal is received, the horizontal louver starts to swing. – Swinging range • Cooling mode/dry mode/fan mode (1 to 3): 1 • Heating mode/fan mode (4 to 6): 3 –...

  • Page 153: Timer Operation Control

    5. Timer operation control 5-1. 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 154 ¢ 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 155: Ired Remote Control

    5-2. 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 156 ¢ 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 157 ¢ 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 158: Defrost Operation Control

    6. Defrost operation control Tn: Outdoor unit heat exchanger temperature Tom: Outdoor heat exchanger middle 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 159: Defrost Operation In Heating Operation Stopped

    6-1. 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 160: Various Control

    7. Various control 7-1. 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 161: Forced Cooling Operation

    7-3. Forced cooling operation The outdoor unit may not operate depending on the room temperature. →hen FORCED COOLING OPERATION button is pressed more than 10 seconds, forced cooling operation starts as shown in the table below. Operation mode Cooling Fan mode HIGH Timer mode Continuous (no timer setting available)

  • Page 162: Po→Erful Operation

    7-6. POWERFUL operation The PO→ERFUL operation starts by pressing PO→ERFUL button on the remote controller. The indoor unit and outdoor unit operate at maximum power as shown in the table below. Rotation number of compressor Maximum Fan mode PO→ERFUL Cooling Horizontal louver setting Heating Release condition:...

  • Page 163: External Electrical Heater Control

    7-9. External electrical heater control The external electrical heater is operated as below. When the room Ts: Setting temperature temperature rises Heater : Off Ts -1°C Ts -3°C Heater : On Ts -10°C Ts -12°C Heater : Off When the room temperature drops NOTES: •...

  • Page 164: Human Sensor For Energy Saving

    7-13. Human sensor for energy saving If no one enters the room for approximately 20 minutes, the set temperature is automatically con- trolled. (→hen someone comes back into the room, the human sensor detect this, and automatically revert to the original settings.) Operation details Operation mode (If there is no one in the room for a while)

  • Page 165: Base Pan Heater Control

    7-15. Base pan heater control The base pan heater operates as follows, depending on the outdoor temperature and operating con- dition. Operation mode Heating Heating Defrost 15 min Pattern X Pattern Z Pattern X Base pan heater control Pattern Y Control pattern Heater Off Ta ≥...

  • Page 166: Unit Status Monitoring And The Detected Value Indication

    7-16. Unit status monitoring and the detected value indication The wired remote controller can monitor the indoor and outdoor units' status and display the detect- ed result as a relevant ID. For details of the display method, refer to the Chapter of “Display Sensor Values” in the Installation Manual of →ired Remote Controller (Touch Panel).
  • Page 167 Available Sensor ID Sensor ID Item Unit Remarks 0: Off, 1: On Indoor unit fan interlocking On/Off NOTE: The value is output even if 00: — (External output) the function setting or rotary switch is not set. 0: Off, 1: On Cooling thermostat On/Off (External NOTE: The value is output even if 00: —...

  • Page 168: Various Protections

    8. Various protections 8-1. 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 169: Current Release Control

    8-3. 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 170 ¢ Model: AOEH14KHCBN 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 171 8-7. 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 172 - (04-38) - 8-7. High temperature and high pressure release control 8. Various protections...
  • Page 173 5. FILED WORKING 2023.11.10 SR_CH05_AS129ES_01...
  • Page 174 CONTENTS 5. FILED WORKING 1. Function settings ..................05-1 1-1. Function settings by using remote controller ..............05-1 1-2. Custom code setting for wireless remote controller ............05-7 2. External input and output................05-8 2-1. External input........................05-9 2-2. External output ......................05-12 2-3. Setting of external input and output ................05-14 2-4.

  • Page 175: 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 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.
  • Page 176 ¢ Contents of function setting Each function setting listed in this section is adjustable in accordance with the installation environ- ment. NOTE: Setting will not be changed if invalid numbers or setting values are selected.  Function setting list Function no. Functions Filter sign 30/31...
  • Page 177 2) Room temperature control for indoor unit sensor 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 178 3) 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 179 6) Remote controller custom code (Only for wireless remote controller) The indoor unit custom code can be changed. Select the appropriate custom code. Function number Setting value Setting description Factory setting ♦ 7) External input control "Operation/Stop" mode or "Forced stop" mode can be selected. Function number Setting value Setting description...
  • Page 180 10) 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 Indoor unit fan operation status (Setting prohibited) - (05-6) -...

  • Page 181: Custom Code Setting For Wireless Remote Controller

    1-2. Custom code setting for wireless remote controller To interconnect the air conditioner and the wireless remote controller, assignment of the custom code for the wireless remote controller is required. NOTE: Air conditioner cannot receive a signal if the air conditioner has not been set for the custom code.

  • Page 182: External Input And Output

    2. External input and output External Input and Output PCB Indoor unit PCB CN47 (Ext. out) CN65 (Ext. in/out PCB) CN46 (Ext. in) SW301 SW302 Rotary switch CN314 CN313 CN312 CN311 CN310 CN308 Connecting point Input/Output Function Input select Input signal Operation/Stop CN46 Input...

  • Page 183: External Input

    2-1. External input →ith using external input function, some functions on this product can be controlled from an external device. • “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. •...
  • Page 184 ¢ External Input and Output PCB The indoor unit Operation/Stop can be set by using the input connector on the PCB. • Input select Use either one of these types of connectors according to the application. (Both types of connec- tors cannot be used simultaneously.) –...
  • Page 185 ¢ 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→302) on the External Input and Output PCB.

  • Page 186: 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 should be used. Maximum length of cable is 25 m. •...
  • Page 187 ¢ External Input and Output PCB • A twisted pair cable should be used. Maximum length of cable is 25 m. • Output voltage: High DC 12 V ±2 V, Low 0 V. • Permissible current: 50 mA • For details, refer to "Setting of external input and output"...

  • Page 188: Setting Of External Input And Output

    2-3. Setting of external input and output • Indoor unit Input Connection point Function setting number 46 Function Operation/Stop mode 1 (R.C. enabled) (Setting prohibited) CN46 Forced stop mode Operation/Stop mode 2 (R.C. disabled) Output Connection point Function setting number 60 Function Operation/Stop 01 to 08...

  • Page 189: 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 SW302 switch Operation — Input of indoor unit CN46 Stop 46-00 Operation External Input and...
  • Page 190 ¢ Forced stop • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary SW302 switch Forced stop (R.C. disabled) — Input of indoor unit CN46 Normal (R.C. enabled) 46-02 Forced stop (R.C.
  • Page 191 ¢ Operation/Stop mode 2 • In the case of “Edge” input External Input and Output PCB Function External input Input signal Command setting Rotary SW302 switch Operation (R.C. enabled) — Input of indoor unit CN46 Stop (R.C. disabled) 46-03 Operation (R.C.
  • Page 192 ¢ Forced thermostat off External Input and Output External input Input signal Command Rotary switch Thermostat off External Input and 2, B, C, D CN313 Output PCB Normal operation CN313 Compressor Room temp. Set temp. - (05-18) - 2-4. Details of control input function 2.

  • Page 193: 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 1, 2 Output of indoor unit CN47 Stop Operation External Input and — 1, B, C, D CN310 Output PCB Stop...
  • Page 194 ¢ 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 CN311 Output PCB Fan stop Fan run...

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