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Fujitsu ASYG09KHCA Service Manual

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AIR CONDITIONER
Wall mounted type
INDOOR
OUTDOOR
SERVICE MANUAL
ASYG09KHCA
ASYG12KHCA
ASYG14KHCA
AOYG09KHCAN
AOYG12KHCAN
AOYG14KHCAN
SR_AS032EF_03
2020.04.07

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  • Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASYG09KHCA ASYG12KHCA ASYG14KHCA OUTDOOR AOYG09KHCAN AOYG12KHCAN AOYG14KHCAN SR_AS032EF_03 2020.04.07...
  • Page 2 • Product specifications and design are subject to change without notice for future improvement. • 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. ™ Google Play is trademark of Google Inc. ®...
  • 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 2020.01.27 SR_CH01_AS032EF_01...

  • Page 6: Table Of Contents

    CONTENTS 1. GENERAL INFORMATION 1. Specifications....................01-1 1-1. Indoor units........................01-1 1-2. Outdoor units ........................01-4 2. Dimensions....................01-5 2-1. Indoor unit ........................01-5 2-2. Outdoor unit........................01-7...

  • Page 7: Specifications

    1. Specifications 1-1. Indoor units Wall mounted Type Inverter heat pump Model name ASYG09KHCA ASYG12KHCA ASYG14KHCA Power supply 230 V ~ 50 Hz Power supply intake Outdoor unit Available voltage range 198—264 V Energy rank Cooling 2.50 3.50 4.20 Rated...
  • Page 8 Wall mounted Type Inverter heat pump Model name ASYG09KHCA ASYG12KHCA ASYG14KHCA NOTES: • Specifications are based on the following conditions: – Cooling: Indoor temperature of 27 °CDB/19 °CWB, and outdoor temperature of 35 °CDB/24 °CWB. – Heating: Indoor temperature of 20 °CDB/15 °CWB, and outdoor temperature of 7 °CDB/6 °CWB.
  • Page 9 Specifications for ErP Lot10 Model name ASYG09KHCA ASYG12KHCA ASYG14KHCA Cooling Energy efficiency class Heating (Average) Cooling 2.5 (35 °C) 3.5 (35 °C) 4.2 (35 °C) Pdesign Heating (Average) 2.5 (-10 °C) 3.5 (-10 °C) 4.2 (-10 °C) SEER Cooling 9.36 9.06...

  • Page 10: Outdoor Units

    1-2. Outdoor units Type Inverter heat pump Model name AOYG09KHCAN AOYG12KHCAN AOYG14KHCAN Power supply 230 V ~ 50 Hz Power supply intake Outdoor unit Available voltage range 198—264 V Starting current Cooling 1,810 2,050 2460 Airflow rate Heating 1,550 1,780 Type ×...

  • Page 11: Dimensions

    2. Dimensions 2-1. Indoor unit ¢ Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA Unit: mm for pipe inlet Ø 65 Outline of unit for pipe inlet Ø 65 - (01-5) - 2-1. Indoor unit 2. Dimensions...
  • Page 12  Installation space requirement Provide sufficient installation space for product safety. Unit: mm Outline of unit 50 or more 50 or more 127 or more 133 or more 1,500 or more - (01-6) - 2-1. Indoor unit 2. Dimensions...

  • Page 13: Outdoor Unit

    2-2. Outdoor unit ¢ Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN Top view Side view Front view Airflow 17.5 hole (10) (10) (10) hole (6x20=120) (6x20=120) ø20 hole 4-ø11.3 mm hole Bottom view - (01-7) - 2-2. Outdoor unit 2. Dimensions...
  • Page 14 - (01-8) - 2-2. Outdoor unit 2. Dimensions...
  • Page 15 2. TECHNICAL DATA AND PARTS LIST 2020.01.27 SR_CH02_AS032EF_01...
  • Page 16 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA ........02-2 3. Outdoor unit parts list.................02-8 3-1. Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN ......02-8 4. Accessories ....................02-12 4-1. Indoor unit ........................02-12 4-2.

  • Page 17: Precautions

    • 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: Indoor Unit Parts List

    2. Indoor unit parts list 2-1. Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA ¢ Exterior parts and accessories Item no. Part no. Part name Service part 9332438147 Remote controller ♦ 9318912005 Remote controller holder ♦ 9332911008 Electric filter holder ♦ 9317250009 Air clean filter assy ♦...
  • Page 19 Main PCB (for 14 model) ♦ 9900720025 Terminal ♦ 9709642023 Display assy ♦ 9379930000 Room thermistor holder ♦ 9900627003 Thermistor assy ♦ — Cover shield — - (02-3) - 2-1. Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA 2. Indoor unit parts list...
  • Page 20 Fan motor ♦ 9315024060 Crossflow fan assy ♦ 9306628024 Bearing C assy ♦ 9316568006 Motor cover ♦ 9316601000 Motor cover ♦ 9319171180 Casing total assy ♦ - (02-4) - 2-1. Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA 2. Indoor unit parts list...
  • Page 21 ¢ Casing total assy Item no. Part no. Part name Service part 9319776002 Outlet cover assy ♦ 9319173085 Motor case assy ♦ 9319172101 Casing assy ♦ - (02-5) - 2-1. Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA 2. Indoor unit parts list...
  • Page 22 ♦ 9318748000 Gear cover A ♦ 9318749007 Louver gear A ♦ 9900384142 Step motor (Diffuser) ♦ 9318750003 Gear cover B ♦ 9316616004 Louver gear B ♦ - (02-6) - 2-1. Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA 2. Indoor unit parts list...
  • Page 23 Casing cover R ♦ 9319229027 L and R louver assy ♦ 9320458003 Fan guard ♦ 9318743029 Pipe bracket ♦ 9316177017 Drain cap ♦ 9316904019 Drain hose assy ♦ - (02-7) - 2-1. Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA 2. Indoor unit parts list...

  • Page 24: Outdoor Unit Parts List

    3. Outdoor unit parts list 3-1. Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN ¢ Exterior parts Item no. Part no. Part name Service part 9900565008 Thermistor (Outdoor temp.) ♦ 9313954031 Thermistor holder ♦ 9332492002 Protective net ♦ 9317939188 Top panel assy ♦ 9318499001 Switch cover assy ♦...
  • Page 25 ¢ Chassis Item no. Part no. Part name Service part 9319151007 Emblem ♦ 9318463149 Front panel assy ♦ 9318467017 Fan guard ♦ 9318461015 Cabinet left assy ♦ 9318462081 Cabinet right assy ♦ 9313808013 Propeller fan ♦ 9603495008 Brushless DC motor ♦...
  • Page 26 ¢ Control unit Item no. Part no. Part name Service part 9710802362 Main PCB (for 09 model) ♦ 9710802379 Main PCB (for 12 model) ♦ 9710802386 Main PCB (for 14 model) ♦ 9900380007 Terminal ♦ 9319540030 Heat sink ♦ 9900935016 Thermistor assy ♦...
  • Page 27 ¢ Refrigeration cycle Item no. Part no. Part name Service part 9317089777 Condenser total assy (for 09 and 12 models) ♦ 9317089609 Condenser total assy (for 14 model) ♦ 9320152093 Pulse motor valve sub assy ♦ 9970095078 Expansion valve coil ♦...

  • Page 28: Accessories

    4. Accessories 4-1. Indoor unit ¢ Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA Part name Exterior Q’ty Part name Exterior Q’ty Operating manual Cloth tape Operating manual Wall hook bracket (CD-ROM) Installation manual Tapping screw (large) Remote controller Tapping screw (small) Battery...

  • Page 29: Optional Parts

    5. Optional parts 5-1. Indoor unit ¢ Controllers Exterior Part name Model name Summary Large and full-dot liquid crystal screen, wide and large keys easy to press, user-intuitive arrow key. Wired remote Wire type: Polar 3-wire UTY-RVNYM controller Optional communication kit is necessary for installation.
  • Page 30 ¢ Others Exterior Part name Model name Summary Required when external device is External connected. UTY-XWZXZ5 connect kit Use to connect with optional devices and air conditioner PCB. Communication UTY-TWBXF1 Optional External connect kit is necessary for installation. Remotely manage an air conditioning Wireless LAN UTY-TFNXZ1 system using mobile devices such as...

  • Page 31: Refrigerant System Diagrams

    6. Refrigerant system diagrams 6-1. Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN Heat exchanger (INDOOR) 3-Way 2-Way valve valve Muffler Muffler Receiver Strainer Expansion valve Heat exchanger (OUTDOOR) Strainer Cooling Heating : Thermistor (Discharge temp.) : Thermistor (Outdoor temp.) : Thermistor (Heat exchanger out temp.) : Thermistor (Room temp.) : Thermistor (Pipe temp.) - (02-15) -...

  • Page 32: Pc Board Diagrams

    7. PC board diagrams 7-1. Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA CONTROL UNIT 09 model: EZ-0190LHSE 12 model: EZ-0190MHSE 14 model: EZ-0190PHSE EARTH TERMINAL OUTDOOR UNIT TERMINAL WHITE BLACK Thermistor Characteristics. Temperature ( 20 ( 30 Thermistor 176.03 k 62.91 k 39.57 k...

  • Page 33: Models: Aoyg09Khcan, Aoyg12Khcan, And Aoyg14Khcan

    7-2. Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN INVERTER ASSEMBLY 09 model: EZ-0190HHUE 12 model: EZ-0190KHUE 14 model: EZ-0190LHUE EMI FILTER KRFC-13 EMI FILTER EMI FILTER TO INDOOR UNIT 2 TURNS KRFC-13 KRFC-13 COMPRESSOR 2 TURNS 1 TURN UL3271 AWG16 W400 Compressor UL1015 AWG20 UL3271 AWG16 W103...
  • Page 34 - (02-18) - 7-2. Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN 7. PC board diagrams...
  • Page 35 3. TROUBLESHOOTING 2020.03.19 SR_CH03_AS032EF_01...
  • Page 36 CONTENTS 3. TROUBLESHOOTING 1. Error code ....................03-1 1-1. Error code table (Indoor unit and wired remote controller)..........03-1 2. Troubleshooting with error code ...............03-2 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit).....03-2 2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit) ....03-4 2-3.

  • Page 37: Error Code

    1. Error code 1-1. 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...

  • Page 38: Troubleshooting With 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 When the indoor unit cannot receive the serial signal from outdoor unit more than 2 minutes after power on, Detective actuator...
  • Page 39 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 40: 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 Main PCB Indoor unit When the outdoor unit cannot receive the serial signal Detective actuator Fan motor from indoor unit more than 10 seconds.
  • Page 41 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 42: E: 12. Wired 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 Indoor unit Main PCB When the indoor unit cannot receive the signal from Detective actuator Wired remote controller more than 1 minute during Wired remote control...

  • Page 43: E: 32. Indoor Unit Main Pcb Error (Indoor Unit)

    2-4. 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 When power is on and there is some below case. Detective actuator Indoor unit main PCB...

  • Page 44: E: 35. Manual Auto Button Error (Indoor Unit)

    2-5. 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 When the MANUAL AUTO button becomes on for Detective actuator Indicator PCB consecutive 60 or more seconds.

  • Page 45: E: 41. Room Temperature Sensor Error (Indoor Unit)

    2-6. 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 46: E: 42. Indoor Unit Heat Exchanger Sensor Error (Indoor Unit)

    2-7. 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 When heat exchanger temperature thermistor open or Detective actuator Heat exchanger temperature short circuit is detected.

  • Page 47: E: 51. Indoor Unit Fan Motor Error (Indoor Unit)

    2-8. 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 When the condition that actual frequency of indoor fan is Detective actuator Indoor unit below 1/3 of target frequency is continued more than 56...

  • Page 48: E: 62. Outdoor Unit Main Pcb Error (Outdoor Unit)

    2-9. 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 49: E: 64. Pfc Circuit Error (Outdoor Unit)

    2-10. 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 • When inverter input DC voltage is higher than 425 V or lower than 80 V. For 14 model, when inverter output DC voltage is higher than 415V for over 3 Detective actuator Outdoor unit...

  • Page 50: E: 65. Ipm Error (Outdoor Unit)

    2-11. 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. When more than normal operating current to IPM in main PCB flows, the compressor stops.
  • Page 51 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. ↓ - (03-15) - 2-11.

  • Page 52: E: 71. Discharge Thermistor Error (Outdoor Unit)

    2-12. 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 When discharge pipe temperature thermistor open or Detective actuator short circuit is detected at power on or while running the Discharge pipe temperature...

  • Page 53: E: 73. Outdoor Unit Heat Exchanger Thermistor Error (Outdoor Unit)

    2-13. 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 When heat exchanger temperature thermistor open or Detective actuator short circuit is detected at power on or while running the Heat exchanger temperature...

  • Page 54: E: 74. Outdoor Temperature Thermistor Error (Outdoor Unit)

    2-14. 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 When outdoor temperature thermistor open or short Detective actuator circuit is detected at power on or while running the Outdoor temperature thermistor...

  • Page 55: E: 84. Current Sensor Error (Outdoor Unit)

    2-15. 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 When input current sensor has detected 0 A, while inverter compressor is operating at higher than 56 rps, Detective actuator Outdoor unit main PCB...

  • Page 56: E: 94. Trip Detection (Outdoor Unit)

    2-16. 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 57: E: 95. Compressor Motor Control Error (Outdoor Unit)

    2-17. 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. When running the compressor, if the detected rotor location is out of phase with actual rotor location more than 90°, the compressor stops.

  • Page 58: E: 97. Outdoor Unit Fan Motor Error (Outdoor Unit)

    2-18. 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. When outdoor fan rotation speed is less than 100 rpm in 20 seconds after fan motor starts, fan motor stops.
  • Page 59 Check point 4. Check output voltage of main PCB Check outdoor unit circuit diagram and the voltage. (Measure at main PCB side con- nector) FAN MOTOR BLACK WHITE YELLOW BROWN NOTE: For details of wiring diagram, refer to "Wiring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST.

  • Page 60: E: 99. 4-Way Valve Error (Outdoor Unit)

    2-19. 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 When the indoor heat exchanger temperature is compared with the room temperature, and either Heat exchanger temperature following condition is detected continuously two times,...
  • Page 61 Check point 3. Check the solenoid coil and 4-way valve • Solenoid coil Remove CN30 (for 9/12 model) and CN500 (for 14 model) from PCB and check the resistance value of coil. Resistance value is about1.88 kΩ to 2.29 kΩ (at 20°C). →...

  • Page 62: E: A1. Discharge Temperature Error (Outdoor Unit)

    2-20. 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 63 Check point 5. Check the refrigerant amount Check the refrigerant leakage. ↓ Check point 6. Replace main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. ↓ - (03-27) - 2-20. E: A1. Discharge temperature error (Outdoor unit) 2.

  • Page 64: Troubleshooting Without Error Code

    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 65: 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 • 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 66: 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 -> If there is some abnormal condition, correct it by referring to the installation manual and “DESIGN &...

  • Page 67: 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 68 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 69: 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 Indoor unit. Abnormal noise is coming from Indoor unit. (Check and correct followings) (Check and correct followings) ↓...

  • Page 70: Water 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? ↓...

  • Page 71: 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 72: Inverter Compressor

    4-2. Inverter compressor ¢ Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN Check point 1. Check connection • Check terminal connection of compressor (loose or incorrect wiring) W(C) V(S) (BLACK) (WHITE) Main PCB U(R) (RED) • Check terminal connection of main PCB (loose or incorrect wiring) Main PCB W400(U) W401(V) W402(W)

  • Page 73: Outdoor Unit Electronic Expansion Valve (Eev)

    4-3. Outdoor unit Electronic Expansion Valve (EEV) ¢ Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN Check point 1. Check connections Check connection of connector. (Loose connector or open cable) NOTE: For details of wiring diagram, refer to "Wiring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST.
  • Page 74 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 75: Indoor Unit Fan Motor

    4-4. Indoor unit fan motor ¢ Models: ASYG09KHCA, ASYG12KHCA, and ASYG14KHCA 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.

  • Page 76: Outdoor Unit Fan Motor

    4-5. Outdoor unit fan motor ¢ Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN 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.

  • Page 77: Heater Unit

    4-6. Heater unit ¢ Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN Check point 1. Check connections Check connection of connector. (Loose connector or open cable) NOTE: For details of wiring diagram, refer to "Wiring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST. Check point 2.

  • Page 78: 4-Way Valve Coil (Solenoid Coil)/4-Way Valve

    4-7. 4-way valve coil (solenoid coil)/4-way valve ¢ Models: AOYG09KHCAN, AOYG12KHCAN, and AOYG14KHCAN 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 79: Thermistor Resistance Values

    5. Thermistor resistance values 5-1. 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 80: Outdoor Unit

    5-2. Outdoor unit ¢ Discharge temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 1,013.1 0.06 -25.0 729.1 0.09 -20.0 531.6 0.12 -15.0 392.3 0.16 -10.0 292.9 0.21 -5.0 221.1 0.28 168.6 0.36 129.8 0.46 10.0 100.9 0.57 15.0 79.1 0.71 20.0 62.5...
  • Page 81 ¢ Heat exchanger temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 95.6 0.24 -25.0 68.9 0.32 -20.0 50.3 0.43 -15.0 37.2 0.57 -10.0 27.8 0.73 -5.0 21.0 0.92 16.1 1.14 12.4 1.39 10.0 1.65 15.0 1.93 20.0 2.21 25.0 2.49 30.0 2.77...
  • Page 82 - (03-46) - 5-2. Outdoor unit 5. Thermistor resistance values...
  • Page 83 4. CONTROL AND FUNCTIONS 2020.04.07 SR_CH04_AS032EF_01...
  • Page 84 CONTENTS 4. CONTROL AND FUNCTIONS 1. Compressor frequency control..............04-1 1-1. Cooling operation ......................04-1 1-2. Heating operation ......................04-3 1-3. Dry operation ........................04-4 1-4. Compressor frequency at normal start-up ..............04-4 1-5. Compressor frequency limitation by outdoor temperature ..........04-5 2. Auto changeover operation................04-6 3.

  • Page 85: Compressor Frequency Control

    • Compressor frequency range Model name Minimum frequency Maximum frequency ASYG09KHCA 8 rps 74 rps ASYG12KHCA ASYG14KHCA 8 rps...
  • Page 86 F zone Unit: rps Outdoor Indoor unit fan mode Model name temperature HIGH QUIET zone A zone B zone ASYG09KHCA C zone ASYG12KHCA D zone E zone F zone A zone B zone C zone ASYG14KHCA D zone E zone...

  • Page 87: Heating Operation

    • Compressor frequency range Unit: rps Model name Minimum frequency Maximum frequency ASYG09KHCA ASYG12KHCA ASYG14KHCA • Limit of maximum speed based on outdoor temperature In heating operation, maximum frequency is defined by outdoor temperature and fan mode. Outdoor...

  • Page 88: Dry Operation

    Zone is defined by set temperature and room temperature. • Compressor frequency range Unit: rps Model name Outdoor temperature zone Operating frequency X zone ASYG09KHCA J zone ASYG12KHCA Y zone X zone ASYG14KHCA J zone Y zone •...

  • Page 89: Compressor Frequency Limitation By Outdoor Temperature

    1-5. Compressor frequency limitation by outdoor temperature The minimum compressor frequency 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 Outdoor temperature zone frequency...

  • Page 90: Auto Changeover Operation

    2. Auto changeover operation When 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 91 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 92: 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 ASYG09KHCA ASYG14KHCA ASYG12KHCA POWERFUL 1,320 1,370 HIGH 1,100 1,210 MED+ 1,040...
  • Page 93 ¢ 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, LOW, MED, HIGH as shown in “Fan speed” above. Airflow change over (Cooling: Auto) Tr - Ts ≥...
  • Page 94 ¢ 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 95 • 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 30°C 28°C S-LOW 7 minutes later: Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL temperature drops 42°C 37°C HIGH...

  • Page 96: 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: AOYG09KHCAN Fan speed is defined by outdoor temperature and compressor frequency. •...
  • Page 97  Model: AOYG12KHCAN Fan speed is defined by outdoor temperature and compressor frequency. • 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 Unit: rpm Cooling Cooling or dry at low outdoor temp.
  • Page 98  Model: AOYG14KHCAN Fan speed is defined by outdoor temperature and compressor frequency. • 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 Unit: rpm Cooling Cooling or dry at low outdoor temp.

  • Page 99: Louver Control

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

  • Page 100: Swing Operation

    4-3. Swing operation • To select vertical airflow swing operation When the swing signal is received, the vertical airflow direction louver starts to swing. – Swinging range • Cooling mode/dry mode/fan mode (1 to 5): 1 ↔ 5 • Heating mode/fan mode (6 to 8): 5 ↔ 8 (assist louver works with the vertical airflow direction louver notch) –...

  • Page 101: 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: When the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 102 ¢ 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 103: Wired Remote Control

    5-2. Wired remote control Temperature set On/Off timer Program timer Sleep timer Weekly timer back timer ○ ○ ○ ○ ○ ¢ On/Off timer • Off timer: When the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 104 ¢ 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 105 ¢ Temperature set back timer • The SET BACK timer only changes the set temperature for 7 days, it cannot be used to start or stop air conditioner operation. • The SET BACK timer can be set to operate up to two times per day but only one temperature setting can be used.

  • Page 106: Defrost Operation Control

    6. 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 107: 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 108: Various Control

    7. Various control 7-1. Auto restart When 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 109: Forced Cooling Operation

    7-3. Forced cooling operation The outdoor unit may not operate depending on the room temperature. When 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 110: Economy Operation

    7-5. ECONOMY operation The ECONOMY operation starts by pressing ECONOMY button on the remote controller. The ECONOMY operation is almost the same operation as below settings. Mode Cooling/Dry Heating Target temperature Setting temperature +1°C Setting temperature -1°C 7-6. POWERFUL operation The POWERFUL operation starts by pressing POWERFUL button on the remote controller.

  • Page 111: Electronic Expansion Valve Control

    7-8. Electronic expansion valve control The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the table below. Operation mode Pulse range Cooling/dry mode Between 52 and 480 pulses Heating mode NOTE: At the time of supplying the power to the outdoor unit, the initialization of the electronic ex- pansion valve is operated (528 pulses are input to the closing direction).

  • Page 112: Human Sensor For Energy Saving

    7-11. Human sensor for energy saving If no one enters the room for approximately 20 minutes, the set temperature is automatically con- trolled. (When 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 113: 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. • When the discharge temperature becomes higher than the trigger condition, the compressor fre- quency is decreased as the table below, and it continues to decrease until the discharge tempera- ture becomes lower than the trigger condition.

  • Page 114: Current Release Control

    8-3. Current release control The compressor frequency is controlled so that the outdoor unit input current does not exceeds cur- rent limit value set according to the outdoor temperature. The compressor frequency returns according to the operation mode, when the current becomes low- er than the release value.

  • Page 115: Compressor Temperature Protection

    8-5. Compressor temperature protection When the compressor temperature sensor detects higher than the trigger condition below, the com- pressor is stopped. When the compressor temperature sensor detects the release condition, the pro- tection is released. Trigger condition 108°C 80°C Release condition (3 minutes after compressor stop) 8-6.
  • Page 116 - (04-32) - 8-8. High temperature and high pressure release control 8. Various protections...
  • Page 117 5. FILED WORKING 2020.04.07 SR_CH05_AS032EF_01...
  • Page 118 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 ............05-5 2. External input and output................05-6 2-1. External input........................05-6 2-2. External output .......................05-9...

  • Page 119: 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 120 NOTES: • The air conditioner custom code is set to prior to shipment. • If you do not know the air conditioner custom code setting, try each of the custom codes ( → → → ) until you find the code that operates the air conditioner. ¢...
  • Page 121 4) Auto restart Enables or disables automatic restart after a power interruption. Function number Setting value Setting description Factory setting Enable ♦ Disable NOTE: Auto restart is an emergency function such as for power outage etc. Do not attempt to use this function in normal operation.
  • Page 122 9) Indoor unit fan control for energy saving for cooling Enables or disables the power-saving function by controlling the indoor unit fan rotation when the outdoor unit is stopped during cooling operation. Function number Setting value Setting description Factory setting Disable Enable ♦...

  • Page 123: 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 124: External Input And Output

    2. External input and output With using external input and output functions, this product can be operated inter-connectedly with an external device. Connector Input Output Remarks CNA01 Control input — See external input/output CNB01 — Operation status output settings for details. CNB02 —...
  • Page 125 • Circuit diagram example • Contact capacity: DC 24 V or Indoor unit more, 10 mA or more. Communication kit Connected unit control PCB • *: Make the distance from the PCB Example: Switch Connector to the connected unit within 10 m. •...
  • Page 126 • Optional part Part name Model name Exterior External input wire External connect kit UTY-XWZXZ5 Communication kit UTY-TWBXF1 * For operating the external function, the wall mounted type requires the communication kit in addi- tion to the wire (UTY-XWZXZ5). - (05-8) - 2-1.

  • Page 127: External Output

    2-2. External output With using external output function, operating status of this product can be transmitted to the exter- nal device, and also, this product can be inter-connected with the external device. ¢ Operation status output  Circuit diagram example Indoor unit control PCB Communication kit...
  • Page 128 ¢ Error status output  Circuit diagram example Indoor unit control PCB Communication kit Connected unit Connector DC 24 V Example: Relay unit Example: Display Relay power supply 10 m* Signal Optional parts Locally purchased • *: Make the distance from the PCB to the connected unit within 10 m. •...

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