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Fujitsu ASYG12KGTE Service Manual
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Fujitsu ASYG12KGTE Service Manual

Fujitsu ASYG12KGTE Service Manual

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AIR CONDITIONER
Wall mounted type
INDOOR
OUTDOOR
SERVICE MANUAL
ASYG07KGTE
ASYG09KGTE
ASYG12KGTE
ASYG14KGTE
AOYG07KGCA
AOYG09KGCA
AOYG12KGCA
AOYG14KGCA
SR_AS069EF_02
2022.03.30

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Summary of Contents for Fujitsu ASYG12KGTE

  • Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASYG07KGTE ASYG09KGTE ASYG12KGTE ASYG14KGTE OUTDOOR AOYG07KGCA AOYG09KGCA AOYG12KGCA AOYG14KGCA SR_AS069EF_02 2022.03.30...
  • 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 2022.3.11 SR_CH01_AS069EF_01...
  • Page 6 CONTENTS 1. GENERAL INFORMATION 1. Specifications....................01-1 1-1. Indoor units........................01-1 1-2. Outdoor units ........................01-3 2. Dimensions....................01-4 2-1. Indoor unit ........................01-4 2-2. Outdoor unit........................01-6...
  • Page 7 1. Specifications 1-1. Indoor units Wall mounted Type Inverter heat pump Model name ASYG07KGTE ASYG09KGTE ASYG12KGTE ASYG14KGTE Power supply 230 V ~ 50- Hz Available voltage range 198—264 V k→ 2.00 2.50 3.40 4.20 Rated Btu/h 6,800 8,500 11,600 14,300 Cooling k→...
  • Page 8 Specifications for ErP Lot10 Model name ASYG07KGTE ASYG09KGTE ASYG12KGTE ASYG14KGTE Cooling Energy efficiency class Heating (Average) Cooling 2.0 (35 °C) 2.5 (35 °C) 3.4 (35 °C) 4.2 (35 °C) Pdesign k→ Heating (Average) 2.3 (-10 °C) 2.4 (-10 °C) 2.5 (-10 °C) 4.0 (-10 °C)
  • Page 9 1-2. Outdoor units Type Inverter heat pump Model name AOYG07KGCA AOYG09KGCA AOYG12KGCA AOYG14KGCA Power supply 230 V ~ 50 Hz Available voltage range 198—264 V Starting current Cooling 1,610 1,680 Airflow rate Heating 1,560 1,610 1,580 Type × Q'ty Propeller fan × 1 Motor output →...
  • Page 10 2. Dimensions 2-1. Indoor unit ¢ Models: ASYG07KGTE, ASYG09KGTE, ASYG12KGTE, and ASYG14KGTE 373.5 417.5 (834) Outline of indoor 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 40 or more 70 or more Wall hook bracket 107 or more 183 or more Outline of the indoor unit 1,500 or more The flare connection part should be installed outdoors.
  • Page 12 2-2. Outdoor unit ¢ Models: AOYG07KGCA, AOYG09KGCA, AOYG12KGCA, and AOYG14KGCA 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) - (01-6) - 2-2.
  • Page 13 2. TECHNICAL DATA AND PARTS LIST 2022.3.11 SR_CH02_AS069EF_01...
  • Page 14 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: AS↔G07KGTE, AS↔G09KGTE, AS↔G12KGTE, and AS↔G14KGTE ....02-2 3. Outdoor unit parts list.................02-6 3-1. Models: AO↔G07KGCA, AO↔G09KGCA, AO↔G12KGCA, and AO↔G14KGCA ...02-6 4. Accessories ....................02-10 4-1. Indoor unit ........................02-10 4-2.
  • Page 15 • 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 16 2. Indoor unit parts list 2-1. Models: ASYG07KGTE, ASYG09KGTE, ASYG12KGTE, and ASYG14KGTE ¢ Exterior parts - (02-2) - 2-1. Models: AS↔G07KGTE, AS↔G09KGTE, AS↔G12KGTE, and AS↔G14KGTE 2. Indoor unit parts list...
  • Page 17 Item no. Part no. Part name Service part 9388142005 Bracket panel ♦ 9383729027 →ire cover B assy ♦ 9387456004 Step motor holder ♦ 9333608006 Bush ♦ 9901011047 Step motor ♦ 9332861006 Shaft cover ♦ 9387590241 Drain pan total assy ♦ 9387476002 Screw cap ♦...
  • Page 18 ¢ Base, evaporator, and control - (02-4) - 2-1. Models: AS↔G07KGTE, AS↔G09KGTE, AS↔G12KGTE, and AS↔G14KGTE 2. Indoor unit parts list...
  • Page 19 Item no. Part no. Part name Service part 9387587128 Base assy ♦ 9388139005 Pipe bracket A ♦ 9388138008 Under cover C ♦ 9388182001 Screw cap ♦ 9383765056 →LAN adapter holder assy ♦ 9711732255 Main PCB (For 07 model) ♦ 9711732262 Main PCB (For 09 model) ♦...
  • Page 20 3. Outdoor unit parts list 3-1. Models: AOYG07KGCA, AOYG09KGCA, AOYG12KGCA, and AOYG14KGCA ¢ Exterior parts and Chassis - (02-6) - 3-1. Models: AO↔G07KGCA, AO↔G09KGCA, AO↔G12KGCA, and AO↔G14KGCA 3. Outdoor unit parts list...
  • Page 21 Item no. Part no. Part name Service part 9322556028 Top panel assy ♦ 9322811011 Protective net assy ♦ 9322552020 Cabinet right assy ♦ 9322570000 Switch cover assy ♦ 9322131010 Shield panel ♦ 9900435028 Terminal 6P ♦ 9709687628 Main PCB (Service) (For 07 model) ♦...
  • Page 22 ¢ Compressor - (02-8) - 3-1. Models: AO↔G07KGCA, AO↔G09KGCA, AO↔G12KGCA, and AO↔G14KGCA 3. Outdoor unit parts list...
  • Page 23 Item no. Part no. Part name Service part 9322427007 Compressor assy (For 07, 09, and 12 model) ♦ 9322429001 Compressor assy (For 14 model) ♦ 9322444004 4-way valve assy ♦ 9970195006 Solenoid ♦ 9970095122 Expansion valve coil ♦ 9322463005 Pulse motor valve assy ♦...
  • Page 24 4. Accessories 4-1. Indoor unit ¢ Models: ASYG07KGTE, ASYG09KGTE, ASYG12KGTE, and ASYG14KGTE Part name Exterior Q’ty Part name Exterior Q’ty Operating manual Cloth tape Operating manual Tapping screw (large) (CD-ROM) Installation manual Tapping screw (small) Remote controller →all hook bracket...
  • Page 25 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 operation in a dark room. →ired remote UT↔-RNR↔Z* →ire type: Non-polar 2-wire controller Optional communication kit is necessary for installation.
  • Page 26 ¢ Others Exterior Part name Model name Summary Use to connect with various peripheral devices and air conditioner PCB. External UT↔-↓→Z↓ connect kit Connecting point: CN47 on Main PCB Required when external device is connected. External UT↔-↓→Z↓Z5 connect kit Connecting point: CN47 on Main PCB Use to connect with external devices and air conditioner PCB.
  • Page 27 6. Refrigerant system diagrams 6-1. Models: AOYG07KGCA, AOYG09KGCA, AOYG12KGCA, and AOYG14KGCA Heat exchanger 3-way (INDOOR) valve 2-way Muffler valve Muffler 4-way valve Strainer Expansion valve Heat exchanger Strainer (OUTDOOR) Cooling Heating : Thermistor (Discharge temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature) : Thermistor (Room temperature) - (02-13) -...
  • Page 28 7. Wiring diagrams 7-1. Indoor unit ¢ Models: ASYG07KGTE, ASYG09KGTE, ASYG12KGTE, and ASYG14KGTE - (02-14) - 7-1. Indoor unit 7. →iring diagrams...
  • Page 29 7-2. Outdoor unit ¢ Models: AOYG07KGCA, AOYG09KGCA, AOYG12KGCA, and AOYG14KGCA - (02-15) - 7-2. Outdoor unit 7. →iring diagrams...
  • Page 30 8. PC board diagrams 8-1. Models: ASYG07KGTE, ASYG09KGTE, ASYG12KGTE, and ASYG14KGTE CONTROL UNIT 07 model : EZ-0210LHSE 09 model : EZ-0210MHSE 12 model : EZ-0210PHSE 14 model : EZ-0210RHSE OPTION (2-WIRE REMOTE CONTROLLER UNIT) TERMINAL JXO-T3102-3P-B UTY-TWRXZ2 AWG22 AWG22 BLACK...
  • Page 31 8-2. Models: AOYG07KGCA, AOYG09KGCA, AOYG12KGCA, and AOYG14KGCA INVERTER ASSEMBLY 07, 09 and 12 models : EZ-0192EHUE 14 model : EZ-0192LHUE REACTOR REACTOR 07,09,12 models 14 model 13mH 8A 15mH 10A EMI FILTER ESD-R-16C or TR-28-16-13 EMI FILTER EMI FILTER 1 TURN GRFC-8 GRFC-8 TO INDOOR UNIR...
  • Page 32 - (02-18) - 8-2. Models: AO↔G07KGCA, AO↔G09KGCA, AO↔G12KGCA, and AO↔G14KGCA 8. PC board diagrams...
  • Page 33 3. TROUBLESHOOTING 2022.03.25 SR_CH03_AS069EF_01...
  • Page 34 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 2. Troubleshooting with error code ...............03-3 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit).....03-3 2-2.

  • Page 35: Table Of Contents

    CONTENTS (continued) 4-1. Compressor........................03-43 4-2. Inverter compressor......................03-44 4-3. Outdoor unit Electronic Expansion Valve (EEV) ............03-45 4-4. Indoor unit fan motor ....................03-47 4-5. Outdoor unit fan motor ....................03-48 5. Thermistor resistance values..............03-49 5-1. Indoor unit ........................03-49 5-2. Outdoor unit........................03-50...
  • Page 37 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 LED lamps to indicate the error content.
  • Page 38 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 39 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 40 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) GREEN WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3.
  • Page 41 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 →hen the outdoor unit cannot receive the serial signal Detective actuator Indoor unit from indoor unit more than 10seconds.
  • Page 42 Check point 4. Check serial signal (reverse transfer signal) Check serial signal (Forward transfer signal) GREEN WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 30 V and AC 130 V at outdoor unit terminal 2—3. • If it is abnormal, replace main PCB.
  • Page 43 2-3. 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 44 2-4. 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 45 2-5. 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 46 2-6. 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 47 2-7. 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 48 2-8. 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 49 2-9. 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 50 2-10. 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 51 2-11. E: 39. Indoor unit power supply error for fan motor (Indoor unit) Operation indicator 3 time flash Timer indicator 9 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 39 • →hen a momentary power cut off Detective actuator Indoor unit main PCB •...
  • Page 52 2-12. E: 3A. Indoor unit communication circuit (wired remote controller) error Operation indicator 3 time flash Timer indicator 10 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 3A →ired remote controller (2-wire) Detect the communication error of microcomputer and Detective actuator communication PCB.
  • Page 53 2-13. E: 41. Room temperature sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 41 Indoor unit main PCB Room temperature thermistor is open or short is Detective actuator detected always.
  • Page 54 2-14. E: 42. Indoor unit heat exchanger sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 42 Indoor unit main PCB →hen heat exchanger temperature thermistor open or Detective actuator Heat exchanger temperature short circuit is detected.
  • Page 55 2-15. E: 51. Indoor unit fan motor error (Indoor unit) Operation indicator 5 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 51 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 56 2-16. E: 5U. Indoor unit error Operation indicator 5 time flash Timer indicator 15 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 5U Check point. Check following error code. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit) E: 11.
  • Page 57 2-17. E: 62. Outdoor unit main PCB error (Outdoor unit) Operation indicator 6 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 62 Access to EEPROM failed due to some cause after Detective actuator Outdoor unit Main PCB...
  • Page 58 2-18. 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 415V for over 3 seconds, the compressor stops. Detective actuator Outdoor unit Main PCB...
  • Page 59 2-19. 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 60 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. - (03-24) - 2-19. E: 65. IPM error (Outdoor unit) 2.
  • Page 61 2-20. 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 62 2-21. E: 73. Outdoor unit heat exchanger liquid outlet 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 63 2-22. 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 64 2-23. 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 65 2-24. E: 94. Over current error (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 66 2-25. 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 67 2-26. 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 68 2-27. 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 69 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 03-43. • Solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance value is 2.780 kΩ (at 20 °C).
  • Page 70 2-28. 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 71 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. - (03-35) - 2-28. E: A1. Discharge temperature error (Outdoor unit) 2.
  • Page 72 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 73 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 74 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 75 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 76 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 77 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 78 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 79: Compressor

    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 80: Inverter Compressor

    4-2. Inverter compressor 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) BLACK WHITE...

  • Page 81: Outdoor Unit Electronic Expansion Valve (Eev)

    4-3. Outdoor unit Electronic Expansion Valve (EEV) Check point 1. Check connections Check connection of connector. (Loose connector or open cable) NOTE: For details of wiring diagram, refer to "→iring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-14. Check point 2.
  • Page 82 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 83: Indoor Unit Fan Motor

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

  • Page 84: Outdoor Unit Fan Motor

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

  • Page 85: Thermistor Resistance Values

    5. Thermistor resistance values 5-1. Indoor unit ¢ Room temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -10.0 58.25 0.73 -5.0 44.03 0.93 33.62 1.15 25.93 1.39 10.0 20.18 1.66 15.0 15.84 1.94 20.0 12.54 2.22 25.0 10.00 2.50 30.0 8.04 2.77 35.0...

  • Page 86: Outdoor Unit

    5-2. Outdoor unit ¢ Discharge temperature thermistor  Models: AOYG07KGCA and AOYG09KGCA 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...
  • Page 87  Models: AOYG12KGCA and AOYG14KGCA Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 1,000.13 0.06 -25.0 720.28 0.09 -20.0 525.51 0.12 -15.0 388.12 0.16 -10.0 289.97 0.22 -5.0 219.01 0.28 167.12 0.36 128.77 0.46 10.0 100.14 0.58 15.0 78.56 0.71 20.0 62.14 0.87 25.0...
  • Page 88 ¢ Heat exchanger temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 95.58 0.24 -25.0 68.90 0.32 -20.0 50.31 0.43 -15.0 37.19 0.57 -10.0 27.81 0.73 -5.0 21.02 0.92 16.05 1.14 12.38 1.39 10.0 9.63 1.65 15.0 7.56 1.93 20.0 5.98 2.21 25.0...
  • Page 89 4. CONTROL AND FUNCTIONS 2022.03.25 SR_CH04_AS069EF_01...
  • Page 90 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 ............04-4 1-5. Rotation number of compressor limitation by outdoor temperature ........04-5 2.
  • Page 91 CONTENTS (continued) 8-6. High temperature and high pressure release control (heating mode) ......04-32...

  • Page 93: 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 94 • 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 zone...

  • Page 95: 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 96: 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 97: Rotation Number Of Compressor Limitation By Outdoor Temperature

    1-5. Rotation number of compressor limitation by outdoor temperature The minimum rotation number of compressor is limited by outdoor temperature as below. • Cooling/Dry mode F zone 38°C E zone 19°C D zone 10°C C zone 0°C B zone -10°C A zone Limitation of compressor Model name...
  • Page 98 • Heating mode F zone 19°C E zone 5°C D zone 0°C C zone -15°C B zone -20°C A zone Limitation of compressor Model name Outdoor temperature zone frequency A zone 37 rps B zone 37 rps AO↔G07KGCA C zone 36 rps AO↔G09KGCA D zone...

  • Page 99: 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 100 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 101: 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 ASYG07KGTE ASYG09KGTE ASYG12KGTE ASYG14KGTE PO→ERFUL 1,200 1,230 1,290 1,330 HIGH 1,130 1,160 1,220 1,260...
  • Page 102 ¢ 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 103 ¢ 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 104 • 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 105: 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: AOYG07KGCA Fan speed is defined by outdoor temperature and compressor frequency. •...
  • Page 106  Model: AOYG09KGCA 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 107  Models: AOYG12KGCA and AOYG14KGCA 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...

  • Page 108: 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 109: Swing Operation

    4-3. Swing operation • To select vertical airflow swing operation →hen the swing signal is received, the vertical airflow direction 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 110: 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 111 ¢ 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 112: Ired 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: →hen the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 113 ¢ 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 114 ¢ 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 115: 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 116: 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 117: 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 118: 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 119: 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. Compressor frequency Maximum Fan mode PO→ERFUL Cooling Vertical airflow direction louver setting Heating Release condition:...

  • Page 120: 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 121: 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 122: 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 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 123: 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 124: Low Outdoor Temperature Protection

    8-5. Low outdoor temperature protection →hen the outdoor temperature sensor detects lower than the trigger condition below, the compres- sor is stopped. Operation mode Cooling/Dry Trigger condition -15 °C Release condition -10 °C 8-6. High temperature and high pressure release control (heating mode) The compressor is controlled as follows.
  • Page 125 5. FILED WORKING 2022.03.25 SR_CH05_AS069EF_01...
  • Page 126 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 ............05-8 2. External input and output................05-9 2-1. External input........................05-10 2-2. External output ......................05-13 2-3. Setting of external input and output ................05-15 2-4.

  • Page 127: 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 128 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. - (05-2) - 1-1.
  • Page 129 ¢ 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 130 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 131 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 132 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 133 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) - (05-7) -...

  • Page 134: 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 135: 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 136: 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 137 ¢ 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 138 ¢ 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 139: 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 140 ¢ 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 141: 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 status 01 to 08...

  • Page 142: 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 143 ¢ 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 144 NOTES: • →hen the forced stop is triggered, indoor unit stops and Operation/Stop operation by the remote controller is restricted. • →hen forced stop function is used with forming a remote controller group, connect the same equipment to each indoor unit within the group. ¢...
  • Page 145 NOTE: →hen “Operation/Stop” mode 2 function is used with forming a remote controller group, connect the same equipment to each indoor unit within the group. ¢ Forced thermostat off External input and output External input Input signal Command Rotary switch Thermostat off External input and 2, B, C...

  • Page 146: 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 CN310 output PCB Stop...
  • Page 147 ¢ 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 CN311 output PCB Fan stop Fan run External input and...

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