Fujitsu AIRSTAGE ASLH09KNAS Service Manual
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Fujitsu AIRSTAGE ASLH09KNAS Service Manual

Fujitsu AIRSTAGE ASLH09KNAS Service Manual

Wall mounted type
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AIR CONDITIONER
Wall mounted type
INDOOR
ASLH09KNAS
ASLH12KNAS
OUTDOOR
AOLH09KNAS1
AOLH12KNAS1
SERVICE MANUAL
SR_AS143ES_03
2024.11.11

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Summary of Contents for Fujitsu AIRSTAGE ASLH09KNAS

  • Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASLH09KNAS ASLH12KNAS OUTDOOR AOLH09KNAS1 AOLH12KNAS1 SR_AS143ES_03 2024.11.11...
  • Page 2 Mobile” is a trademark of FUJITSU GENERAL LIMITED. ™ Google Play is trademark of Google LLC. ® App Store is a service mark of Apple Inc., registered in the U.S. and other countries. Copyright © 2024 Fujitsu General Limited. All rights reserved.

  • Page 3: General Information

    CONTENTS 1. GENERAL INFORMATION 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. CONTROL AND FUNCTIONS 5. FIELD WORKING...
  • Page 5 1. GENERAL INFORMATION 2024.11.11 SR_CH01_AS143ES_02...
  • 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........................01-6...
  • Page 7 1. Specifications 1-1. Indoor unit Wall mounted Type Inverter, Heat pump Model name ASLH09KNAS ASLH12KNAS Power supply intake Outdoor unit Voltage System power supply Frequency Available voltage range 103.5—126.5 Indoor unit power supply (from outdoor unit) k→ 2.64 3.52 Rated Btu/h 9,000 12,000...
  • Page 8 Wall mounted Type Inverter, Heat pump Model name ASLH09KNAS ASLH12KNAS 9-13/16 × 30-5/16 × 8-9/16 (250 × 770 × 218) Dimensions in (mm) (H × → × D) Gross 10-13/16 × 33-1/16 × 12-3/16 (274 × 840 × 310) 15 (7.0) 17 (7.5) →eight lb (kg)

  • Page 9: Outdoor Unit

    1-2. Outdoor unit Type Inverter, Heat pump Model name AOLH09KNAS1 AOLH12KNAS1 Power supply 115 V~ 60 Hz Power supply intake Outdoor unit Available voltage range 103.5—126.5 V Starting current 11.0 Cooling 971 (1,650) 1,001 (1,700) Airflow rate CFM (m Heating 853 (1,450) 865 (1,470) Type ×...
  • Page 10 2. Dimensions 2-1. Indoor unit ¢ Models: ASLH09KNAS and ASLH12KNAS Unit: in (mm) 30-5/16 (770) 8-9/16 (218) 1/8 (3) 9-1/16 (230.6) 5-3/8 9-1/16 (230.6) 6-13/16 (136) (173) Outline of indoor unit for pipe inlet for pipe inlet Ø2-9/16 (65) Ø2-9/16 (65) 4-5/16 3-7/8 (110)

  • Page 11: Installation Space Requirement

     Installation space requirement Provide sufficient installation space for product safety. Unit: in (mm) Wall hook bracket 2 (40) or more 2 (30) or more 7 (176) or more 8 (203) or more Outline of the indoor unit 60 (1,500) or more - (01-5) - 2-1.
  • Page 12 2-2. Outdoor unit ¢ Models: AOLH09KNAS1 and AOLH12KNAS1 Unit: in (mm) 17-11/16 (450) 4-3/16 (106) 4-M10 hole Pitch of bolts for installation Top view 3/4 (19) 26-1/8 (663) 2-11/16 (68) 1/2 (13) 11-7/16 (290) 1-5/16 (33) 1-3/16 (30) Side view Front view Side view Airflow...
  • Page 13 2. TECHNICAL DATA AND PARTS LIST 2024.11.11 SR_CH02_AS143ES_02...
  • Page 14 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: ASLH09KNAS and ASLH12KNAS..............02-2 3. Outdoor unit parts list.................02-6 3-1. Models: AOLH09KNAS1 and AOLH12KNAS1 ...............02-6 4. Accessories ....................02-10 4-1. Indoor unit ........................02-10 4-2. Outdoor unit........................02-10 5.
  • 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: Exterior Parts

    2. Indoor unit parts list 2-1. Models: ASLH09KNAS and ASLH12KNAS ¢ Exterior parts - (02-2) - 2-1. Models: ASLH09KNAS and ASLH12KNAS 2. Indoor unit parts list...
  • Page 17 Item no. Part no. Part name 9388959009 Bracket panel 9333888026 Horizontal louver 9333886312 Front panel total assy 9388953007 Air filter 9334141069 Remote controller total assy (Including No.6) 9334098004 Remote controller holder - (02-3) - 2-1. Models: ASLH09KNAS and ASLH12KNAS 2. Indoor unit parts list...
  • Page 18 ¢ Chassis, evaporator, and control unit - (02-4) - 2-1. Models: ASLH09KNAS and ASLH12KNAS 2. Indoor unit parts list...
  • Page 19 Item no. Part no. Part name 9383735547 Evaporator total assy (09 model) 9383735530 Evaporator total assy (12 model) 9388951003 Room thermistor holder 9901160066 Thermistor assy 9900369071 Terminal block 3P 9712493131 Main PCB (09 model) 9712493148 Main PCB (12 model) 9711146137 Indicator assy 9711147028 Indicator PCB...
  • Page 20 3. Outdoor unit parts list 3-1. Models: AOLH09KNAS1 and AOLH12KNAS1 ¢ Exterior parts and chassis - (02-6) - 3-1. Models: AOLH09KNAS1 and AOLH12KNAS1 3. Outdoor unit parts list...
  • Page 21 Item no. Part no. Part name 9322556103 Top panel assy 9709689981 Main PCB (09 model) 9709689998 Main PCB (12 model) 9900727062 Thermistor assy 9900565176 Thermistor (Outdoor temp.) 9901096051 Thermistor (Heat exchanger temp.) 9900879020 Reactor assy 9322552310 Cabinet right assy 9322570055 Switch cover assy 9322144003 Drain pipe...
  • Page 22 ¢ Compressor - (02-8) - 3-1. Models: AOLH09KNAS1 and AOLH12KNAS1 3. Outdoor unit parts list...
  • Page 23 Item no. Part no. Part name 9322423009 Compressor assy (09 model) 9322425003 Compressor assy (12 model) 9322392008 4-way valve assy 9970048036 Solenoid 9970222016 Expansion valve coil 9322403001 Pulse motor valve 9322474025 2-way valve assy 9318254051 3-way valve assy - (02-9) - 3-1.
  • Page 24 4. Accessories 4-1. Indoor unit ¢ Models: ASLH09KNAS and ASLH12KNAS 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 Battery 4-2. Outdoor unit ¢...
  • Page 25 5. Optional parts 5-1. Indoor unit Exterior Part name Model name Summary Remotely manage an air conditioning system using mobile devices such as smartphones and tablets. Appropriate application for each region →LAN Adapter UT↔-TFS↓H4 is required to use this option. For details, contact FGL sales company.

  • Page 26: Refrigerant System Diagrams

    6. Refrigerant system diagrams 6-1. Models: AOLH09KNAS1 and AOLH12KNAS1 Heat exchanger 3-way 2-way (INDOOR) valve valve Muffler 4-way valve Strainer Expansion valve Heat exchanger Strainer (OUTDOOR) Cooling Heating : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature) : Thermistor (Room temperature)
  • Page 27 7. Wiring diagrams 7-1. Indoor unit ¢ Models: ASLH09KNAS and ASLH12KNAS - (02-13) - 7-1. Indoor unit 7. →iring diagrams...
  • Page 28 7-2. Outdoor unit ¢ Models: AOLH09KNAS1 and AOLH12KNAS1 - (02-14) - 7-2. Outdoor unit 7. →iring diagrams...
  • Page 29 8. PC board diagrams 8-1. Models: ASLH09KNAS and ASLH12KNAS CONTROL UNIT EZ-0249HSE TERMINAL AWG16 BLACK OUTDOOR UNIT POWER SOURCE AWG16 WHITE AC115 V Thermistor Characteristics 60 Hz AWG22 RED 32°F 68°F 86°F Temperature Thermistor (0°C) (20°C) (30°C) 176.03 kΩ 62.91 kΩ 39.57 kΩ...
  • Page 30 8-2. Models: AOLH09KNAS1 and AOLH12KNAS1 CONTROL UNIT EZ-0249HUE Winding Resistance 2.180 Ω ℉ [20°C]) EMI FILTER TR-28-16-13 FG 3 TURNS UL3271 AWG16 W400 UL3271 AWG16 WHITE WHITE W401 COMPRESSOR EMI FILTER EMI FILTER UL3271 AWG16 GRFC-8 W402 BLACK BLACK REACTOR TO INDOOR UNIT GRFC-8 1 TURN...

  • Page 31: Troubleshooting

    3. TROUBLESHOOTING 2024.10.15 SR_CH03_AS143ES_01...
  • Page 32 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)..................03-2 1-4. Error code table (→ireless LAN indicator)...............03-3 1-5. How to check the error code on Mobile app ..............03-4 1-6.

  • Page 33: Table Of Contents

    CONTENTS (continued) 4. Troubleshooting with error code (For wireless LAN adapter)....03-57 4-1. E: 18.↓. External communication error between indoor unit and wireless LAN adapter ..............................03-57 4-2. Network communication error between wireless LAN router and wireless LAN adapter .............................03-58 4-3.

  • Page 35: Error Code

    1. Error code →hen a problem occurs in the system or the connected device, the error content is notified by dis- playing the code. NOTE: This function is only available in a system with indoor or IR receiver units equipped with in- dicator lamps to show the error content.
  • Page 36 1-3. Error code table (Indoor unit) 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 Error contents Operation [ ] Timer [ ] Economy [ ] (Green) (Orange)
  • Page 37 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 38 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 39 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 40 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 - (03-6) - 1-7. Error message for wireless LAN control (Mobile app) 1.

  • Page 41: Error Message List

    ¢ 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 42 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 43 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 44 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 45 • 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 46 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 47 • 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 48 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 49 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 50 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 51 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 52 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 53 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 54 2. Troubleshooting with error code 2-1. E: 11.X. 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 55 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) BLACK WHITE • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3. • If it is abnormal, check the parts below. –...
  • Page 56 2-2. E: 11.X. 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 properly receive the serial Detective actuator Fan motor signal from indoor unit for 10 seconds or more.
  • Page 57 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. Check point 1-2.
  • Page 58 2-3. E: 18.X. 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 59 2-4. E: 22.X. 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 60 2-5. E: 23.X. 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 61 2-6. E: 32.X. 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 62 2-7. E: 33.X. 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 63 2-8. E: 35.X. 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 64 2-9. E: 39.X. 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 65 2-10. E: 41.X. 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 66 2-11. E: 42.X. 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 67 2-12. E: 51.X. 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 68 2-13. E: 62.X. 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 69 2-14. E: 63.X. 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 70 2-15. E: 64.X. 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 71 2-16. E: 65.X. 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 72 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. - (03-38) - 2-16. E: 65.↓. IPM error (Outdoor unit) 2.
  • Page 73 2-17. E: 71.X. 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 74 2-18. E: 73.X. 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 75 2-19. E: 74.X. 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 76 2-20. E: 84.X. 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 77 2-21. E: 94.X. 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 78 2-22. E: 95.X. 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 79 2-23. E: 97.X. 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 80 2-24. E: 99.X. 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 81 Check point 3. Check the solenoid coil and 4-way valve Solenoid coil • Remove P60 from PCB and check the resistance value of coil. Resistance value is about 305 Ω (at 68°F [20°C]). If it is open or abnormal resistance value, replace solenoid coil. •...
  • Page 82 2-25. E: A1.X. 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 ≥ 230°F Detective actuator (110°C) during compressor operation generated 2 times Discharge temperature thermistor...
  • Page 83 Check point 5. Check the refrigerant amount Check the refrigerant leakage. Check point 6. Replace the main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. - (03-49) - 2-25. E: A1.↓. Discharge temperature error (Outdoor unit) 2.
  • Page 84 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 85 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 86 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 Are these indoor unit, outdoor unit, and remote controller suitable model names to connect? ->...
  • Page 87 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 88 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 89: 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 90 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 91: Troubleshooting With Error Code (For Wireless Lan Adapter)

    4. Troubleshooting with error code (For wireless LAN adapter) 4-1. E: 18.X. 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 92: 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 93 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 94: E: 18.↓. Communication Error

    4-3. E: 18.X. 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 95 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 96: E: 18.↓. →Ireless Lan Adapter Non-Energized

    4-4. E: 18.X. 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 97: 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 98 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. - (03-64) - 4-5. Mobile app setting method 4. Troubleshooting with error code (For wireless LAN adapter)

  • Page 99: 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 100: Inverter Compressor

    5-2. 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 101: 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 02-13. Check point 2.
  • Page 102 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 103: 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 104: 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 105: Reactor Assy

    5-6. Reactor assy Check point 1. Appearance check No fissures, breaks, damage, etc. at the body and winding section, terminals section? Check point 2. Electric check • Set the tester to the "Resistance" mode, and check for open/short between both ends of the reactor wire (or connector).

  • Page 106: 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 107: Thermistor Resistance Values

    6. Thermistor resistance values 6-1. Indoor unit ¢ Room temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) 14.0 (-10.0) 58.25 0.73 23.0 (-5.0) 44.03 0.93 32.0 (0.0) 33.62 1.15 41.0 (5.0) 25.93 1.39 50.0 (10.0) 20.18 1.66 59.0 (15.0) 15.84 1.94 68.0 (20.0)

  • Page 108: Outdoor Unit

    6-2. Outdoor unit ¢ Discharge temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) 1,013.11 0.06 -12.0 (-25.0) 729.09 0.09 -4.0 (-20.0) 531.56 0.12 5.0 (-15.0) 392.31 0.16 14.0 (-10.0) 292.91 0.21 23.0 (-5.0) 221.09 0.28 32.0 (0.0) 168.60 0.36 41.0 (5.0)
  • Page 109 ¢ Heat exchanger temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) 95.58 0.24 -12.0 (-25.0) 68.90 0.32 -4.0 (-20.0) 50.31 0.43 5.0 (-15.0) 37.19 0.57 14.0 (-10.0) 27.81 0.73 23.0 (-5.0) 21.02 0.92 32.0 (0.0) 16.05 1.14 41.0 (5.0) 12.38 1.39...
  • Page 110 ¢ Outdoor temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) 224.33 0.73 -12.0 (-25.0) 159.71 0.97 -4.0 (-20.0) 115.24 1.25 5.0 (-15.0) 84.21 1.56 14.0 (-10.0) 62.28 1.90 23.0 (-5.0) 46.58 2.26 32.0 (0.0) 35.21 2.61 41.0 (5.0) 26.88 2.94 50.0 (10.0)

  • Page 111: Control And Functions

    4. CONTROL AND FUNCTIONS 2024.10.15 SR_CH04_AS143ES_01...
  • Page 112 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. Limitation of compressor rotation number by outdoor temperature.........04-5 2.

  • Page 113: 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 114 • Limit of maximum speed based on outdoor temperature Outdoor temperature rises Outdoor temperature drops 96.8°F A zone 93.2°F (36°C) (34°C) 89.6°F B zone 86.0°F (32°C) (30°C) 69.8°F C zone 66.2°F (21°C) (19°C) 53.6°F D zone 50.0°F (12°C) (10°C) 35.6°F E zone 32.0°F (2°C)

  • Page 115: 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 11°F (6.0°C) lower than a set temperature, the operation rotation num- ber of compressor will attain to maximum performance.

  • Page 116: 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 117: 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 G zone 122.0°F (50°C) F zone 100.4°F (38°C) E zone 66.2°F (19°C) D zone 50.0°F (10°C) C zone 32.0°F...
  • Page 118 • Heating mode F zone 66.2°F (19°C) E zone 41.0°F (5°C) D zone 32.0°F (0°C) C zone 5.0°F (-15°C) B zone -13.0°F (-25°C) A zone Unit: rps Limitation of compressor Model name Outdoor temperature zone rotation number A zone B zone C zone AOLH09KNAS1 D zone...

  • Page 119: 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 64.4°F (18°C) and 86.0°F (30°C) in 1.8°F (1.0°C) steps.

  • Page 120: Operation Flow Chart

    Operation flow chart Start Ts: Setting temperarure Monitor mode Room temp. > Ts+3.6°F(2°C)? Room temp. < Ts-3.6°F(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 121: 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 ASLH09KNAS ASLH12KNAS PO→ERFUL 1,360 1,380 HIGH 1,260 1,310 MED+ 1,160 1,170 1,070 1,050 Heating...

  • Page 122: Cooling Operation

    ¢ 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 123 ¢ 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 124 • Powerful operation Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL temperature drops 107.6°F (42°C) 98.6°F HIGH (37°C) 102.2°F (39°C) 93.2°F (34°C) 98.6°F (37°C) 89.6°F Cool air prevention (32°C) 86.0°F (30°C) 82.4°F S-LOW (28°C) 7 minutes later: Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL...

  • Page 125: 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: AOLH09KNAS1 Fan speed is defined by outdoor temperature and rotation number of compressor. •...
  • Page 126  Model: AOLH12KNAS1 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 69.8°F ( 21°C) 66.2 °F Z zone (19°C) 53.6°F ( 12°C) 50.0 °F F zone...

  • Page 127: 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 128: 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 129: Sleep Timer

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

  • Page 130: 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 131: 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 132: 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 133: 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 134: Fresh Air Control

    7-6. Fresh air control The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as below. Operation Fan motor (Indoor unit) Stop Operation Fan motor (for Fresh Air) Stop 7-7. Compressor preheating operation CAUTION To perform the preheat operation, turn on the power for the outdoor unit at least 12 hours before the operation.

  • Page 135: Electronic Expansion Valve Control

    7-9. 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 136: 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 137: Cooling Pressure Over-Rise Protection

    8-4. Cooling pressure over-rise protection →hen the outdoor unit heat exchanger temperature reaches trigger condition below, the compressor is stopped and trouble display is performed. Trigger condition 149.0°F (65°C) 8-5. Low outdoor temperature protectionWireless remote control →hen the outdoor temperature sensor detects lower than the trigger condition below, the compres- sor is stopped.
  • Page 138 - (04-26) - 8-6. High temperature and high pressure release control 8. Various protections...
  • Page 139 5. FIELD WORKING 2024.10.15 SR_CH05_AS143ES_01...
  • Page 140 CONTENTS 5. FIELD 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 ............05-6...

  • Page 141: Function Settings By Using Remote Controller

    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 142 STEP 2: Selecting the function number and setting value 1. Press the TEMP./SELECT ( ) buttons to select the function Function number number. To switch between the left and right digits, press the MODE button. 2. Press the FAN SPEED button to proceed the setting value. To re- turn the function number selection, press the FAN SPEED button again.

  • Page 143: Contents Of Function Setting

    ¢ 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 144: Auto Restart

    2) Room temperature control for indoor unit sensor NOTE: Before performing this setting, refer to Function 95. 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 145 4) 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 ♦ 5) 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.

  • Page 146: 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.

This manual is also suitable for:

Airstage aslh12knasAirstage aolh09knas1Airstage aolh12knas1

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