Fujitsu ASUH09LPAS Service Manual
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Fujitsu ASUH09LPAS Service Manual

Wall mounted type
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AIR CONDITIONER
Wall mounted type
INDOOR
OUTDOOR
SERVICE MANUAL
ASUH09LPAS
ASUH12LPAS
AOUH09LPAS1
AOUH12LPAS1
SR_AS050EF_03
2022.10.18

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  • Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASUH09LPAS ASUH12LPAS OUTDOOR AOUH09LPAS1 AOUH12LPAS1 SR_AS050EF_03 2022.10.18...
  • Page 2 Notices: • Product specifications and design are subject to change without notice for future improvement. • For further details, please check with our authorized dealer. Copyright © 2020, 2022 Fujitsu General Limited. All rights reserved.
  • Page 3 CONTENTS 1. GENERAL INFORMATION 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. CONTROL AND FUNCTIONS 5. FILED WORKING...
  • Page 5 1. GENERAL INFORMATION 2022.10.18 SR_CH01_AS050EF_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 ASUH09LPAS ASUH12LPAS Power supply 208/230 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V 2.64 3.52 Rated Btu/h 9,000 12,000 Cooling 0.97—3.16 1.00—3.72...
  • Page 8 Wall mounted Type Inverter heat pump Model name ASUH09LPAS ASUH12LPAS Material PP+HDPE Drain hose Tip diameter in (mm) Ø17/32 (Ø13.8) (I.D.), Ø19/32 to 21/32 (Ø15.0 to 16.8) (O.D.) °F (°C) 64 to 90 (18 to 32) Cooling Operation range 80 or less Heating °F (°C)
  • Page 9 1-2. Outdoor unit Type Inverter heat pump Model name AOUH09LPAS1 AOUH12LPAS1 Power supply 208/230 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current Cooling 959 (1,630) 989 (1,680) Airflow rate CFM (m Heating 959 (1,630) 989 (1,680) Type ×...
  • Page 10 2. Dimensions 2-1. Indoor unit ¢ Models: ASUH09LPAS and ASUH12LPAS Unit: in (mm) 8-3/4 (222) 32-13/16 (834) 1/8 (3.0) (32-13/16 [834]) 2-5/8 (67) 12-7/8 (327) 12-7/8 (327) 4-7/16 (113) Outline of indoor unit for pipe inlet Ø 2-9/16 (65) for pipe inlet Ø 2-9/16 (65)
  • Page 11  Installation space requirement Provide sufficient installation space for product safety. Unit: in (mm) 2 (40) or more 3 (70) or more Wall hook bracket 5 (107) or more Outline of the indoor unit 8 (183) or more 60 (1,500) or more A: Install so that the flare connection part is outdoors.
  • Page 12 2-2. Outdoor unit ¢ Model: AOUH09LPAS1 Unit: in (mm) 4-M10 hole 17-11/16 (450) 4-3/16 (106) Pitch of bolts for installation Top view 1/2 (13) 11-7/16 (290) 3/4 (19) 26-1/8 (663) 2-11/16 (68) 1-5/16 (33) 1-3/16 (30) Side view Front view Side view Airflow 6-11/16 (170)
  • Page 13 ¢ Model: AOUH12LPAS1 Unit: in (mm) 4-M10 hole 22-13/16 (580) 4-5/16 (109) Pitch of bolts for installation Top view 3/4 (19) 31-7/16 (799) 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 15-11/16 (399) 7-1/16 (180) Drain port Ø1-5/8 (42)
  • Page 14 - (01-8) - 2-2. Outdoor unit 2. Dimensions...
  • Page 15 2. TECHNICAL DATA AND PARTS LIST 2021.04.15 SR_CH02_AS050EF_02...
  • Page 16 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: ASUH09LPAS and ASUH12LPAS..............02-2 3. Outdoor unit parts list.................02-6 3-1. Model: AOUH09LPAS1 ....................02-6 3-2. Model: AOUH12LPAS1 ....................02-10 4. Accessories ....................02-14 4-1. Indoor unit ........................02-14 4-2. Outdoor unit........................02-14 5.
  • Page 17 • Service parts information and design are subject to change without notice for product improve- ment. • For the latest information of the service parts, refer to our Service Portal. https://fujitsu-general.force.com/portal/ • Precise figure of the service parts listed in this manual may differ from the actual service parts. - (02-1) -...
  • Page 18 2. Indoor unit parts list 2-1. Models: ASUH09LPAS and ASUH12LPAS ¢ Exterior parts - (02-2) - 2-1. Models: ASUH09LPAS and ASUH12LPAS 2. Indoor unit parts list...
  • Page 19 Drain hose assy ♦ 9334098004 Remote controller holder ♦ 9334126004 Remote controller ♦ 9351596002 Remote controller total assy ♦ — Step motor holder — — Front panel — - (02-3) - 2-1. Models: ASUH09LPAS and ASUH12LPAS 2. Indoor unit parts list...
  • Page 20 ¢ Base, evaporator, and control - (02-4) - 2-1. Models: ASUH09LPAS and ASUH12LPAS 2. Indoor unit parts list...
  • Page 21 Box shield — — Control box — — PCB holder A — — Control cover — — Display case assy — — Motor case — — Motor cover - (02-5) - 2-1. Models: ASUH09LPAS and ASUH12LPAS 2. Indoor unit parts list...
  • Page 22 3. Outdoor unit parts list 3-1. Model: AOUH09LPAS1 ¢ Exterior parts and chassis - (02-6) - 3-1. Model: AOUH09LPAS1 3. Outdoor unit parts list...
  • Page 23 Item no. Part no. Part name Service part 9322556103 Top panel assy ♦ 9709686324 Main PCB ♦ 9900727062 Thermistor assy ♦ 9900565053 Thermistor assy (outdoor temp) ♦ 9900583019 Reactor assy ♦ 9384912008 Heat sink ♦ 9322552310 Cabinet right assy ♦ 9384268006 Conduit cover ♦...
  • Page 24 ¢ Compressor - (02-8) - 3-1. Model: AOUH09LPAS1 3. Outdoor unit parts list...
  • Page 25 Item no. Part no. Part name Service part 9350855001 Compressor assy ♦ 9322392008 4-way valve assy ♦ 9970110153 Solenoid ♦ 9970095153 Expansion valve coil ♦ 9322403018 Pulse motor valve ♦ 9322474025 2-way valve assy ♦ 9318254051 3-way valve assy ♦ 9322389008 S insurator H ♦...
  • Page 26 3-2. Model: AOUH12LPAS1 ¢ Exterior parts and Chassis - (02-10) - 3-2. Model: AOUH12LPAS1 3. Outdoor unit parts list...
  • Page 27 Item no. Part no. Part name Service part 9322556028 Top panel assy ♦ 9322811011 Protective net ♦ 9322552259 Cabinet right assy ♦ 9384268006 Conduit cover ♦ 9322570055 Switch cover assy ♦ 9709686331 Main PCB ♦ 9900565060 Thermistor assy ♦ 9900727062 Thermistor assy ♦...
  • Page 28 ¢ Compressor - (02-12) - 3-2. Model: AOUH12LPAS1 3. Outdoor unit parts list...
  • Page 29 Item no. Part no. Part name Service part 9384354006 Compressor assy ♦ 9322444011 4-way valve assy ♦ 9970110160 Solenoid ♦ 9970173028 Expansion valve coil ♦ 9322463029 Pulse motor valve assy ♦ 9322474001 2-way valve assy ♦ 9322475008 3-way valve assy ♦...
  • Page 30 4. Accessories 4-1. Indoor unit ¢ Models: ASUH09LPAS and ASUH12LPAS Part name Exterior Q’ty Part name Exterior Q’ty Operating manual Tapping screw (large) Installation manual Tapping screw (small) Remote controller Battery Remote controller Wall hook bracket holder Cloth tape Ion deodorization filter...
  • Page 31 5. Optional parts 5-1. Indoor unit ¢ Controllers Exterior Part name Model name Summary Easy finger touch operation with LCD panel. Backlit LCD enables easy operation in a dark room. Wire type: Non-polar 2-wire Optional Communication Kit is necessary for installation. NOTE: When this remote controller is connected, wireless remote controller cannot be...
  • Page 32 FGL sales company. For connection between indoor unit Modbus UTY-VMSX with UART interface and a Modbus Converter open network. This converter can control Fujitsu Thermostat UTY-TTRX General products using a third-party Converter thermostat controller. This converter is required when...
  • Page 33 6. Refrigerant system diagrams 6-1. Models: AOUH09LPAS1 and AOUH12LPAS1 Heat exchanger 3-way (INDOOR) valve 2-way Muffler valve 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) - (02-17) -...
  • Page 34 7. Wiring diagrams 7-1. Indoor unit ¢ Models: ASUH09LPAS and ASUH12LPAS - (02-18) - 7-1. Indoor unit 7. Wiring diagrams...
  • Page 35 7-2. Outdoor unit ¢ Models: AOUH09LPAS1 and AOUH12LPAS1 - (02-19) - 7-2. Outdoor unit 7. Wiring diagrams...
  • Page 36 8. PC board diagrams 8-1. Models: ASUH09LPAS and ASUH12LPAS CONTROL UNIT 09 model : EZ-0201CHSE 12 model : EZ-0201DHSE 2-WIRE REMOTE CONTROL UNIT ( OPTION ) UTY-TWRXZ2 TERMINAL UL1007 AWG22 UL1015 AWG22 BLACK REMOTE CN301 CN14 CN300 UL1007 AWG22 WHITE...
  • Page 37 8-2. Models: AOUH09LPAS1 and AOUH12LPAS1 INVERTER ASSEMBLY 09,12 models : EZ-02013HUE EMI FILTER TR-28-16-13 3 TURNS UL3271 AWG16 W400 REACTOR UL3271 13mH 8A AWG16 W401 WHITE WHITE COMPRESSOR UL3271 EMI FILTER EMI FILTER AWG16 Winding Resistance GRFC-8 GRFC-8 W402 BLACK BLACK TO INDOOR UNIT 1 TURN...
  • Page 38 - (02-22) - 8-2. Models: AOUH09LPAS1 and AOUH12LPAS1 8. PC board diagrams...
  • Page 39 3. TROUBLESHOOTING 2021.07.XX SR_CH03_AS050EF_01...
  • Page 40 CONTENTS 3. TROUBLESHOOTING 1. Error code ....................03-1 1-1. How to check the error memory..................03-1 1-2. How to erase the error memory ..................03-1 1-3. Error code table (Indoor unit and wired remote controller)..........03-2 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 41 CONTENTS (continued) 5-2. Outdoor unit........................03-43...
  • Page 43 1. Error code When a problem occurs in the system or the connected device, the error content is notified by dis- playing the code. NOTE: This function is only available in a system with indoor or IR receiver units equipped with in- dicator lamps to show the error content.
  • Page 44 1-3. Error code table (Indoor unit and wired remote controller) The operation, timer, and economy indicators operate according to the error contents. For confirmation of the error contents, refer the flashing pattern as follows. Indoor unit display Wired remote Error contents Operation [ ] Timer [ ] Economy [ ]...
  • Page 45 2. Troubleshooting with error code 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 11 Main PCB When the indoor unit cannot receive the serial signal from outdoor unit more than 2 minutes after power on, Detective actuator...
  • Page 46 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) BLACK WHITE BLACK WHITE • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3. •...
  • Page 47 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 When the indoor unit cannot receive the serial signal from outdoor unit more than 2 minutes after power on, Detective actuator Indoor unit...
  • Page 48 Check point 4. Check serial signal (reverse transfer signal) Check serial signal (Forward transfer signal) BLACK WHITE BLACK WHITE • 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 49 2-3. E: 12. Wired remote controller communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 12 Indoor unit Main PCB When the indoor unit cannot receive the signal from Detective actuator Wired remote controller more than 1 minute during Wired remote control...
  • Page 50 2-4. E: 18. External communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 8 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 18 External After receiving a signal from the external input and Detective actuator Indoor unit communication output PCB, the same signal has not been received for...
  • Page 51 2-5. E: 32. Indoor unit main PCB error (Indoor unit) Operation indicator 3 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 32 When power is on and there is some below case. Detective actuator Indoor unit main PCB...
  • Page 52 2-6. E: 35. MANUAL AUTO button error (Indoor unit) Operation indicator 3 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 35 Indoor unit controller PCB When the MANUAL AUTO button becomes on for Detective actuator Indicator PCB consecutive 30 or more seconds.
  • Page 53 2-7. 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 2-8. E: 42. Indoor unit heat exchanger sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 42 Indoor unit main PCB When heat exchanger temperature thermistor open or Detective actuator Heat exchanger temperature short circuit is detected.
  • Page 55 2-9. E: 51. Indoor unit fan motor error (Indoor unit) Operation indicator 5 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 51 main PCB When the actual rotation number of the indoor unit fan Detective actuator Indoor unit motor is below 1/3 of the target rotation number...
  • Page 56 2-10. 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 57 2-11. E: 64. PFC circuit error (Outdoor unit) Operation indicator 6 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 64 • When inverter input DC voltage is higher than 415 V for over 3 seconds, the compressor stops. Detective actuator Outdoor unit Main PCB...
  • Page 58 2-12. E: 65. IPM error (Outdoor unit) Operation indicator 6 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 65 Main PCB 1. When more than normal operating current to IPM in main PCB flows, the compressor stops.
  • Page 59 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. ↓ - (03-17) - 2-12.
  • Page 60 2-13. E: 71. Discharge thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 1 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 71 Outdoor unit main PCB When discharge pipe temperature thermistor open or Detective actuator short circuit is detected at power on or while running the Discharge pipe temperature...
  • Page 61 2-14. E: 73. Outdoor unit heat exchanger thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 73 Outdoor unit main PCB When heat exchanger temperature thermistor open or Detective actuator short circuit is detected at power on or while running the Heat exchanger temperature...
  • Page 62 2-15. E: 74. Outdoor temperature thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 74 Outdoor unit main PCB When outdoor temperature thermistor open or short Detective actuator circuit is detected at power on or while running the Outdoor temperature thermistor...
  • Page 63 2-16. E: 84. Current sensor error (Outdoor unit) Operation indicator 8 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 84 When input current sensor has detected 0 A, while inverter compressor is operating at higher than 56 rps, Detective actuator Outdoor unit main PCB...
  • Page 64 2-17. E: 94. Trip detection (Outdoor unit) Operation indicator 9 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 94 Main PCB Protection stop by over-current generation after inverter compressor start processing completed generated consecutively 10 times.
  • Page 65 2-18. E: 95. Compressor motor control error (Outdoor unit) Operation indicator 9 time flash Timer indicator 5 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 95 Main PCB 1. When running the compressor, if the detected rotor location is out of phase with actual rotor location more than 90°, the compressor stops.
  • Page 66 2-19. E: 97. Outdoor unit fan motor error (Outdoor unit) Operation indicator 9 time flash Timer indicator 7 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 97 Main PCB 1. When outdoor fan rotation speed is less than 100 rpm in 20 seconds after fan motor starts, fan motor stops.
  • Page 67 2-20. E: 99. 4-way valve error (Outdoor unit) Operation indicator 9 time flash Timer indicator 9 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 99 Indoor unit main PCB When the indoor heat exchanger temperature is compared with the room temperature, and either Heat exchanger temperature following condition is detected continuously two times,...
  • Page 68 Check point 3. Check the solenoid coil and 4-way valve • Solenoid coil Remove CN501 from PCB and check the resistance value of coil. Resistance value is about 1.22 kΩ — 1.49 kΩ (at 68 °F [20 °C]). → If it is open or abnormal resistance value, replace solenoid coil. •...
  • Page 69 2-21. 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 ≥ 230 °F Detective actuator (110 °C) during compressor operation generated 2 times Discharge temperature thermistor...
  • Page 70 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. ↓ - (03-28) - 2-21. E: A1. Discharge temperature error (Outdoor unit) 2.
  • Page 71 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 72 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 73 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 74 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 75 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 76 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 77 3-6. Water leaking Erroneous installation Forecast of cause Drain hose failure Diagnosis method when water is spitting Diagnosis method when water leak occurs • Is main unit installed in stable condi- tion? Is the filter clogged? • Is main unit broken or deformed at the time of transportation or maintenance? ↓...
  • Page 78 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 79 4-2. Inverter compressor Check point 1. Check connection • Check terminal connection of compressor (loose or incorrect wiring) C (W) S(V) (BLACK) (WHITE) Main PCB R(U) (RED) • Check terminal connection of main PCB (loose or incorrect wiring) Main PCB W400(U) W401(V) W402(W) BLACK...
  • Page 80 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 "Wiring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-18. Check point 2.
  • Page 81 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 82 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.
  • Page 83 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.
  • Page 84 5. Thermistor resistance values 5-1. 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 85 5-2. 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 86 ¢ 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 87 4. CONTROL AND FUNCTIONS 2021.07.XX SR_CH04_AS050EF_01...

  • Page 88: Table Of Contents

    CONTENTS 4. CONTROL AND FUNCTIONS 1. Rotation number control of compressor...........04-1 1-1. Cooling operation ......................04-1 1-2. Heating operation ......................04-3 1-3. Dry operation ........................04-4 1-4. Rotation number of compressor at normal start-up ............04-5 1-5. Limitation of compressor rotation number by outdoor temperature.........04-6 2.

  • Page 89: Rotation Number Control Of Compressor

    However, the maximum rotation number is limited in the range shown in the figure below based on the indoor fan mode and the outdoor temperature. • Rotation number range of compressor Unit: rps Model name Minimum frequency Maximum frequency ASUH09LPAS ASUH12LPAS - (04-1) - 1-1. Cooling operation 1. Rotation number control of compressor...
  • Page 90 F zone Unit: rps Indoor unit fan mode Outdoor Model name temperature zone HIGH QUIET A zone B zone C zone ASUH09LPAS D zone E zone F zone A zone B zone C zone ASUH12LPAS D zone E zone F zone - (04-2) - 1-1.

  • Page 91: Heating Operation

    • Rotation number range of compressor Unit: rps Model name Minimum frequency Maximum frequency ASUH09LPAS ASUH12LPAS • Limit of maximum speed based on outdoor temperature In heating operation, maximum rotation number is defined by outdoor temperature and fan mode. Outdoor...

  • Page 92: Dry Operation

    Zone is defined by set temperature and room temperature. • Rotation number range of compressor Unit: rps Model name Outdoor temperature zone Operating frequency X zone ASUH09LPAS J zone Y zone X zone ASUH12LPAS J zone Y zone • Compressor control based on room temperature...

  • Page 93: Rotation Number Of Compressor At Normal Start-Up

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

  • Page 94: Limitation Of Compressor Rotation Number By Outdoor Temperature

    1-5. Limitation of compressor rotation number by outdoor temperature The minimum rotation number of compressor is limited by outdoor temperature as below. • Cooling/Dry mode F zone 100.4°F (38°C) E zone 66.2°F (19°C) D zone 50.0°F (10°C) C zone 32.0°F (0°C) B zone 14.0°F...
  • Page 95 • 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 Limitation of compressor Model name Outdoor temperature zone frequency A zone 43 rps B zone 43 rps C zone 30 rps...

  • Page 96: Auto Changeover Operation

    2. Auto changeover operation When the air conditioner is set to AUTO mode by remote controller, operation starts in the optimum mode from among heating, cooling, dry and monitoring modes. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set be- tween 64.4°F (18°C) and 86.0°F (30°C) in 1.8°F (1.0°C) steps.
  • Page 97 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 98: 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 ASUH09LPAS ASUH12LPAS POWERFUL 1,230 1,290 HIGH 1,160 1,220 MED+ 1,070 1,140...
  • Page 99 ¢ Cooling operation Switch the airflow AUTO, and indoor fan motor will run according to room temperature, as below. On the other hand, if switched in HIGH—QUIET, indoor motor will run at a constant airflow of COOL operation modes QUIET, LOW, MED, HIGH as shown in “Fan speed” above. Airflow change over (Cooling: Auto) Tr - Ts ≥...
  • Page 100 ¢ 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 101 • 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 102: 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: AOUH09LPAS1 Fan speed is defined by outdoor temperature and rotation number of compressor. •...
  • Page 103  Model: AOUH12LPAS1 Fan speed is defined by outdoor temperature and rotation number of compressor. • Outside air temperature zone selection Outside air Outside air temperature rises temperature drops Y zone 69.8°F ( 21°C) 66.2 °F Z zone (19°C) 53.6°F ( 12°C) 50.0 °F...

  • Page 104: 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 105: Timer Operation Control

    5. Timer operation control 5-1. Wireless remote control On/Off timer Program timer Sleep timer Weekly timer ○ ○ ○ — ¢ On/Off timer • Off timer: When the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 106 ¢ 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 107: Wired Remote Control

    5-2. Wired remote control Temperature On/Off timer Program timer Sleep timer Weekly timer Setback Timer ○ ○ ○ ○ ○ ¢ On/Off timer • Off timer: When the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 108 ¢ 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 109 ¢ Temperature Setback Timer • The temperature setback timer only changes the set temperature for 7 days, it cannot be used to start or stop air conditioner operation. • The temperature setback timer can be set to operate up to two times per day but only one temperature setting can be used.

  • Page 110: 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 111 – Model: AOUH12LPAS1 • 1st time defrosting after starting operation Compressor integrating Less than 17 min. 17 to 57 min. More than 57 min. operation time Tn ≤ 15.8°F (-9°C) and Condition Does not operate Tn ≤ 23.0°F (-5°C) Tn-Ta ≥ 9.0°F (5°C) •...

  • Page 112: 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 113: Various Control

    7. Various control 7-1. Auto restart When the power was interrupted by a power failure etc. during operation, the operation contents at that time are memorized and when the power is recovered, operation is automatically started with the memorized operation contents. Operation contents memorized when the power is interrupted Operation mode Setting temperature...

  • Page 114: Forced Cooling Operation

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

  • Page 115: 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 By preheating the compressor, warm airflow is quickly discharged when the operation is started. •...

  • Page 116: 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 117: Unit Status Monitoring And The Detected Value Indication

    7-12. Unit status monitoring and the detected value indication The wired remote controller can monitor the indoor and outdoor units' status and display the detect- ed result as a relevant ID. For details of the display method, refer to the Chapter of “Display Sensor Values” in the Installation Manual of Wired Remote Controller (Touch Panel).
  • Page 118 Available Sensor ID Sensor ID Item Unit Remarks 0: Off, 1: On Cooling thermostat On/Off (External NOTE: The value is output even if 00: — output) the function setting or rotary switch is not set. 0: Off, 1: On Requested cooling strength On/Off NOTE: The value is output even if 00: —...

  • Page 119: Various Protections

    8. Various protections 8-1. Discharge gas temperature over-rise prevention control The discharge gas temperature sensor (discharge thermistor: outdoor unit side) detects the dis- charge gas temperature. • When the discharge temperature becomes higher than the trigger condition, the compressor fre- quency is decreased as the table below, and it continues to decrease until the discharge tempera- ture becomes lower than the trigger condition.

  • Page 120: 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 121: High Temperature And High Pressure Release Control

    8-6. High temperature and high pressure release control The compressor is controlled as follows. Indoor unit heat exchanger Indoor unit heat exchanger temperature rises temperature drops 145.4°F (63°C) Zone A 131.0°F (55°C) 127.4°F (53°C) Zone B 122.0°F (50°C) Zone C Zone D Stable zone Zone E...
  • Page 122 - (04-34) - 8-6. High temperature and high pressure release control 8. Various protections...
  • Page 123 5. FILED WORKING 2021.06.28 SR_CH05_AS050EF_03...
  • Page 124 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 ............05-10 2. External input and output.................05-11 2-1. External input........................05-12 2-2. External output ......................05-14 2-3. Combination of external input and output ..............05-16 2-4.

  • Page 125: 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 126 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 127 ¢ 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 128 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 129 3) Room temperature control for wired remote controller sensor NOTE: Before performing this setting, refer to Function 95. 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“...
  • Page 130 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 131 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—04 Cooling thermostat On Heating operation Operation/Stop 07—08 Cooling thermostat On...
  • Page 132 13) Outdoor temperature zone boundary temperature A Setting required if changing of the outdoor temperature setting for heat pump prohibition zone is re- quired when auxiliary heater control by outdoor temperature 1 and 2 are performed on the indoor unit. For details, refer to “External heater output” in Chapter 2-4.
  • Page 133 16) Heat pump backup setting Enables or disables the heat pump backup instruction from the outdoor unit. This function will be usable provided that the corresponding outdoor unit is connected. Function number Setting value Setting description Factory setting Disable ♦ Enable 17) Emergency heat for external output terminal Enables or disables emergency heat input.

  • Page 134: Custom Code Setting For Wireless Remote Controller

    1-2. Custom code setting for wireless remote controller ¢ 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 Input External input External output Connector Input select signal Operation/Stop CN46...

  • Page 136: External Input

    2-1. External input With 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 (22AWG) should be used. Maximum length of cable is 492 ft (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: 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 (22AWG) should be used. Maximum length of cable is 82 ft (25 m). •...
  • Page 139 ¢ External Input and Output PCB • A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft (25 m). • Output voltage: High DC 12 V±2 V, Low 0 V. • Permissible current: 50 mA •...

  • Page 140: Combination Of External Input And Output

    2-3. Combination of external input and output By combining the function setting of the indoor unit and rotary switch setting of the External Input and Output PCB, you can select various combinations of functions. Combination examples of external input and output are as follows: External input Indoor unit External Input and Output PCB...
  • Page 141 External output Indoor unit External Input and Output PCB Function Rotary Mode setting CN47 CN310 CN311 CN312 External heater Indoor unit fan 60-11 Operation/Stop Error status output operation status NOTE: Input of Operation/Stop depends on the setting of function setting 46. 00: Operation/Stop mode 1 (R.C.

  • Page 142: Details Of Function

    2-4. Details of function ¢ Control input function • When function setting is “Operation/Stop” mode 1 – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting Input and Output PCB Off → On Operation External Input and 46-00...
  • Page 143 • When function setting is “Forced stop” mode – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting Input and Output PCB Off → On Forced stop External Input and 46-02 CN313 Output PCB On →...
  • Page 144 • When function setting is “Operation/Stop” mode 2 – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting Input and Output PCB Off → On Operation Stop External Input and 46-03 CN313 (Remote Output PCB On →...
  • Page 145 • Forced thermostat off function Rotary SW on External External input Input signal Command Input and Output PCB Off → On Thermostat off External Input and Output PCB CN313 On → Off Normal operation Input Compressor Room temp. Set temp. ¢...
  • Page 146 • Indoor unit fan operation status Rotary SW on External Output External output Command Input and Output PCB signal Off → On Fan run CN312 On → Off Fan stop Off → On Fan run External Input and Output PCB CN311 On →...
  • Page 147 ¢ External heater output Function setting Indoor unit Wired R. C. Control Primary heater Auxiliary heater Control switching external heaters Sensor activation* No. 61 Auxiliary heater Heat pump 61-00 — External device* control 1 Auxiliary heater Heat pump External device 61-01 —...
  • Page 148 • Inappropriate designing and installation of external heater may cause a fire by emitted heat from the external heater. • Fujitsu General Ltd. is not responsible for inappropriate designing or installation of external heating device.  Auxiliary heater control 1...
  • Page 149  Heat pump prohibition control Perform heating by external heater only. Indoor unit is continuous thermostat off. Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 150  Auxiliary heater control by outdoor temperature 1 This control selects heat pump or external heater according to the outdoor temperature. When out- door temperature is high, the heating is performed by using heat pump only. Operation Condition Heater on Heater is on as shown in following diagram of heating temperature.
  • Page 151 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump Heat pump Combination zone prohibition only zone Outdoor temperature zone * zone Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 152  Auxiliary heater control by outdoor temperature 2 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Condition Heater on...
  • Page 153 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump Combination zone Outdoor temperature zone * prohibition zone Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 154  Auxiliary heater control by outdoor temperature 3 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Condition Heater on...
  • Page 155 • Operation status Heat pump only zone 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 156  Auxiliary heat pump control • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode Heater off •...
  • Page 157  Auxiliary heat pump control by outdoor temperature 1 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 158 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump Combination zone Outdoor temperature zone * prohibition zone Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 159  Auxiliary heat pump control by outdoor temperature 2 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 160 • Operation status Heat pump prohibition zone 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 161  Auxiliary heat pump control by outdoor temperature 3 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 162 • Operation status Heat pump prohibition zone 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 163 ¢ Heating thermostat on for humidifier Indoor unit Function External output setting Situation Mode Rotary SW Heating Indoor unit fan Heating thermostat on operation thermostat on no. 60 status 60-05 CN47 Example of 60-06 CN312 individual Not used 60-07 CN311 connection 60-08 CN310...

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