Fujitsu AIRSTAGE ASUH09KTAS Service Manual
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Fujitsu AIRSTAGE ASUH09KTAS Service Manual

Fujitsu AIRSTAGE ASUH09KTAS Service Manual

Wall mounted type
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AIR CONDITIONER
Wall mounted type
INDOOR
OUTDOOR
AOUH09KTAP1
SERVICE MANUAL
ASUH09KTAS
ASUH12KTAS
ASUH15KTAS
AOUH12KTAP1
AOUH15KTAP1
For Cold Climate Region
SR_AS147ES_02
2024.12.24

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Roko
July 25, 2025

Pozdravi, znaci ja upalim klimu preko daljinskog i metlice se otvore i klima radi i svijetlu lampica za rad klime i svjetli/treperi lampica economy bez da sam stisnio tikmu economy ali ne puse i ne proizvodi hladan zrak zato sto gori zelena Economy lampica. Pa je li moguce nakako iskljuciti tu lampicu i da gori samo zeleno kod oznake za rad klime ili resetirati nekako klimu ili je to neka greska ili kvar?

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Summary of Contents for Fujitsu AIRSTAGE ASUH09KTAS

  • Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL For Cold Climate Region INDOOR ASUH09KTAS ASUH12KTAS ASUH15KTAS OUTDOOR AOUH09KTAP1 AOUH12KTAP1 AOUH15KTAP1 SR_AS147ES_02 2024.12.24...
  • Page 2 App Store is a service mark of Apple Inc., registered in the U.S. and other countries. IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under license. Copyright © 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 2024.12.13 SR_CH01_AS147ES_01...
  • Page 6 CONTENTS 1. GENERAL INFORMATION 1. Specifications....................01-1 1-1. Indoor unit ........................01-1 1-2. Outdoor unit........................01-3 2. Dimensions....................01-4 2-1. Indoor unit ........................01-4 2-2. Outdoor unit........................01-7...
  • Page 7 1. Specifications 1-1. Indoor unit Wall mounted Type Inverter, Heat pump Model name ASUH09KTAS ASUH12KTAS ASUH15KTAS Power supply intake Outdoor unit Voltage 208/230 System power supply Frequency Available voltage range 187—253 Indoor unit power supply (from outdoor unit) 208/230 k→ 2.64 3.52 4.25...
  • Page 8 Wall mounted Type Inverter, Heat pump Model name ASUH09KTAS ASUH12KTAS ASUH15KTAS Material Polystyrene Enclosure →hite Color Approximate color of Munsell N9.25/ 11-5/8 × 35-3/16 × 11 (295 × 894 × 280) Dimensions in (mm) (H × → × D) Gross 14-3/16 ×...

  • Page 9: Outdoor Unit

    1-2. Outdoor unit Type Inverter, Heat pump Model name AOUH09KTAP1 AOUH12KTAP1 AOUH15KTAP1 Power supply 208/230 V~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current Cooling 1,136 (1,930) 1,377 (2,340) 1,472 (2,500) Airflow rate CFM (m Heating 1,042 (1,770) 1,107 (1,880)
  • Page 10 2. Dimensions 2-1. Indoor unit ¢ Models: ASUH09KTAS, ASUH12KTAS, and ASUH15KTAS Unit: in (mm) 35-3/16 (894) 11 (280) 17-5/8 (448) 17-9/16 (446) 2-1/8 (54) 15-1/2 (394) 15-1/4 (388) 2-5/16 (58) Outline of unit for pipe inlet for pipe inlet 2-3/8 (61) 2-13/16 (71) Ø...

  • Page 11: Installation Space Requirement

     Installation space requirement Provide sufficient installation space for product safety. Unit: in (mm) Outline of unit 3 (75) or more 3 (70) or more 5 (127) or more 6 (133) or more 60 (1,500) or more - (01-5) - 2-1.
  • Page 12 ¢ Pipe exit length from the rear Design the system considering the length of the pipes or hose exiting from the rear of the indoor unit. NOTE: Detailed shapes of the indoor unit and the tip of each pipe or hose may vary depending on the model.
  • Page 13 2-2. Outdoor unit ¢ Model: AOUH09KTAP1 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 Hole...
  • Page 14 ¢ Models: AOUH12KTAP1 and AOUH15KTAP1 Unit: in (mm) 4-M10 hole 23-5/8 (600) 4-5/16 (109) Pitch of bolts for installation 3/4 (19) 32-5/16 (820) 2-11/16 12-3/8 (315) (68) (13) 13/16 (20) 11/16 (18) Side view Front view Side view Airflow 16-1/8 (410) 7-5/8 (194) Drain port Ø42 Bottom view...
  • Page 15 2. TECHNICAL DATA AND PARTS LIST 2024.12.24 SR_CH02_AS147ES_02...
  • Page 16 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: ASUH09KTAS, ASUH12KTAS, and ASUH15KTAS .........02-2 3. Outdoor unit parts list.................02-6 3-1. Model: AOUH09KTAP1 ....................02-6 3-2. Models: AOUH12KTAP1 and AOUH15KTAP1.............02-10 4. Accessories ....................02-16 4-1. Indoor unit ........................02-16 4-2.
  • Page 17 • Service parts information and design are subject to change without notice for product improve- ment. • For the latest information of the service parts, refer to our Service Portal. https://fujitsu-general.force.com/portal/ • Precise figure of the service parts listed in this manual may differ from the actual service parts. - (02-1) -...

  • Page 18: Exterior Parts

    2. Indoor unit parts list 2-1. Models: ASUH09KTAS, ASUH12KTAS, and ASUH15KTAS ¢ Exterior parts - (02-2) - 2-1. Models: ASUH09KTAS, ASUH12KTAS, and ASUH15KTAS 2. Indoor unit parts list...
  • Page 19 Item no. Part no. Part name 9318861020 Bracket panel 9319232133 Diffuser assy 9318849011 Louver 9320311001 Spring T 9320460129 Front panel sub assy 9317250009 Air clean filter assy 9300394000 Air filter 9361885004 Remote controller total assy 9350319008 Remote controller holder - (02-3) - 2-1.
  • Page 20 ¢ Base, evaporator, and control unit - (02-4) - 2-1. Models: ASUH09KTAS, ASUH12KTAS, and ASUH15KTAS 2. Indoor unit parts list...
  • Page 21 Item no. Part no. Part name 9323532199 Evaporator total assy 9379930000 Room temp. thermistor holder 9901160059 Thermistor assy 9315024060 Crossflow fan assy 9316568006 Motor cover 9603253073 DC fan motor 9316601000 Motor cover 9319173146 Motor case assy 9309994003 Gear A 9901011122 Stepping motor (Diffuser) 9900139230 Stepping motor (Left and right)
  • Page 22 3. Outdoor unit parts list 3-1. Model: AOUH09KTAP1 ¢ Exterior parts and Chassis - (02-6) - 3-1. Model: AOUH09KTAP1 3. Outdoor unit parts list...
  • Page 23 Item no. Part no. Part name 9322556028 Top panel assy 9377854001 Protective net assy 9322327000 Thermistor holder 9900565145 Thermistor (Outdoor temp.) 9901054037 Thermistor (Heat exchanger temp.) 9900985011 Thermistor (Compressor temp.) 9712996229 Main PCB 9900935054 Thermistor assy 9322570062 Switch cover assy 9322552365 Cabinet right assy 9901059025...
  • Page 24 ¢ Compressor - (02-8) - 3-1. Model: AOUH09KTAP1 3. Outdoor unit parts list...
  • Page 25 Item no. Part no. Part name 4-way valve assy 9970110160 Solenoid 9970222016 Expansion valve coil 9322462015 Pulse motor valve assy 9322474001 2-way valve assy 9322850010 3-way valve assy 9810523006 Compressor - (02-9) - 3-1. Model: AOUH09KTAP1 3. Outdoor unit parts list...
  • Page 26 3-2. Models: AOUH12KTAP1 and AOUH15KTAP1 ¢ Exterior parts and Chassis - (02-10) - 3-2. Models: AOUH12KTAP1 and AOUH15KTAP1 3. Outdoor unit parts list...
  • Page 27 Item no. Part no. Part name 9322556073 Top panel assy 9334053041 Protective net assy (12 model) 9334053034 Protective net assy (15 model) 9322327000 Thermistor holder 9900565145 Thermistor (Outdoor temp.) (12 model) 9900565183 Thermistor (Outdoor temp.) (15 model) 9901054037 Thermistor (Heat exchanger temp.) 9900985011 Thermistor (Compressor temp.) 9712996236...
  • Page 28 ¢ Compressor Model: AOUH12KTAP1 - (02-12) - 3-2. Models: AOUH12KTAP1 and AOUH15KTAP1 3. Outdoor unit parts list...
  • Page 29 Item no. Part no. Part name 9323293021 4-way valve assy 9970110160 Solenoid 9970222016 Expansion valve coil 9322462015 Pulse motor valve assy 9322474001 2-way valve assy 9322850010 3-way valve assy 9810523006 Compressor - (02-13) - 3-2. Models: AOUH12KTAP1 and AOUH15KTAP1 3. Outdoor unit parts list...
  • Page 30 Model: AOUH15KTAP1 - (02-14) - 3-2. Models: AOUH12KTAP1 and AOUH15KTAP1 3. Outdoor unit parts list...
  • Page 31 Item no. Part no. Part name 9322446022 4-way valve assy 9970110160 Solenoid 9970222016 Expansion valve coil 9322463029 Pulse motor valve assy 9322474001 2-way valve assy 9322850010 3-way valve assy 9810521002 Compressor - (02-15) - 3-2. Models: AOUH12KTAP1 and AOUH15KTAP1 3. Outdoor unit parts list...

  • Page 32: Outdoor Unit

    4. Accessories 4-1. Indoor unit ¢ Models: ASUH09KTAS, ASUH12KTAS, and ASUH15KTAS Part name Exterior Part name Exterior Operation manual →all hook bracket Self-tapping screw Installation manual (large) Self-tapping screw Remote controller (small) Remote controller Cloth tape holder Battery Filter holder Installation spacer Air cleaning filters 4-2.
  • Page 33 5. Optional parts 5-1. Indoor unit ¢ Controllers Exterior Part name Model name Summary Remote controller that provides the functions you need in a sleek design that uniquely transforms itself to blend with any interior. Optional Communication Kit is necessary for installation. NOTE: →hen this remote controller is connected, wireless →ired Remote...
  • Page 34 NOTES: • Available functions may differ by the remote controller. For details, refer to the operation manu- • →hen using the group controlling system of the →ired Remote Controller, using →LAN Adapter is prohibited. - (02-18) - 5-1. Indoor unit 5.
  • Page 35 For connection between indoor unit Modbus with UART interface and a Modbus UT↔-VMS↓ Converter open network. Connecting point: CN65 on Main PCB This converter can control Fujitsu General products using a third-party thermostat controller. Optional Thermostat UT↔-TTR↓Z* Communication Kit is necessary for Converter installation.

  • Page 36: Refrigerant System Diagrams

    6. Refrigerant system diagrams 6-1. Models: AOUH09KTAP1 and AOUH12KTAP1 Heat exchanger 3-way 2-way (INDOOR) valve valve Muffler Muffler Receiver tank Strainer 4-way valve Expansion valve Heat exchanger Strainer Accumulator (OUTDOOR) Cooling Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature)
  • Page 37 6-2. Model: AOUH15KTAP1 Heat exchanger 3-way 2-way (INDOOR) valve valve Muffler Muffler 4-way valve Strainer Expansion valve Accumulator Heat exchanger Strainer (OUTDOOR) Cooling Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature) : Thermistor (Room temperature)
  • Page 38 7. Wiring diagrams 7-1. Indoor unit ¢ Models: ASUH09KTAS, ASUH12KTAS, and ASUH15KTAS - (02-22) - 7-1. Indoor unit 7. →iring diagrams...
  • Page 39 7-2. Outdoor unit ¢ Models: AOUH09KTAP1, AOUH12KTAP1, and AOUH15KTAP1 - (02-23) - 7-2. Outdoor unit 7. →iring diagrams...
  • Page 40 8. PC board diagrams 8-1. Models: ASUH09KTAS, ASUH12KTAS, and ASUH15KTAS CONTROL UNIT 09 model: EZ-0241YHSE 12 model: EZ-02420HSE 15 model: EZ-02421HSE TERMINAL OPTION UNIT (2-WIRE REMOTE CONTROLLER) AWG22 BLACK CN14 OUTDOOR UNIT AWG22 WHITE CN300 B3 (5.0) B-XASK-1-A (LF) (SN) AWG22 RED POWER SUPPLY B03B-XNISK-A-1 (LF) (SN)
  • Page 41 8-2. Models: AOUH09KTAP1, AOUH12KTAP1, and AOUH15KTAP1 CONTROL UNIT 09 model: EZ-02402HUE 12, 15 models: EZ-02403HUE Winding Resistance EMI FILTER TRM-31-20-15E-WE 1.916 Ω 3 TURNS (68°F [20°C]) EMI FILTER EMI FILTER GRFC-13 W400 AWG16 RED GRFC-13 2 TURNS TO INDOOR UNIT 1 TURN AWG16 WHITE W401...
  • Page 42 - (02-26) - 8-2. Models: AOUH09KTAP1, AOUH12KTAP1, and AOUH15KTAP1 8. PC board diagrams...

  • Page 43: Troubleshooting

    3. TROUBLESHOOTING 2024.12.24 SR_CH03_AS147ES_01...
  • Page 44 CONTENTS 3. TROUBLESHOOTING 1. Error code ....................03-1 1-1. How to check the error memory..................03-1 1-2. How to erase the error memory ..................03-1 1-3. Error code table (Indoor unit and wired remote controller)..........03-2 1-4. Error code table (→ireless LAN indicator)...............03-4 1-5. How to check the error code on Mobile app ..............03-5 1-6.

  • Page 45: Table Of Contents

    CONTENTS (continued) 2-33. E: A3.↓. Compressor temperature error (Outdoor unit) ..........03-62 3. Troubleshooting without error code............03-64 3-1. Indoor unit—No power....................03-64 3-2. Outdoor unit—No power....................03-65 3-3. No operation (Power is on) ...................03-66 3-4. No cooling/No heating ....................03-67 3-5. Abnormal noise......................03-69 3-6. →ater leaking........................03-70 3-7.

  • Page 47: 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 48 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 49: E: A3.↓. Compressor Temperature Error (Outdoor Unit)

    Indoor unit display Wired remote Error contents Operation [ ] Timer [ ] Economy [ ] controller (Green) (Orange) (Green) display E: 97.↓. Outdoor unit fan motor error 9 times 7 times Continuous (Outdoor unit) E: 99.↓. 4-way valve error (Outdoor unit) 9 times 9 times Continuous...
  • Page 50 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 51 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 52 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 53 Error message Error contents Error code Outdoor unit heat ex. liquid temp. thermistor E: 73.↓. Outdoor unit heat exchanger 73.3 error thermistor error (Outdoor unit) E: 74.↓. Outdoor temperature thermistor Outside air temp. thermistor error 74.1 error (Outdoor unit) Outdoor unit current sensor 1 error (permanent E: 84.↓.
  • Page 54 1-7. Error message for wireless LAN control (Mobile app) ¢ Error display If there is an abnormality on the wireless control system, refer to error messages as follows. Error message - (03-8) - 1-7. Error message for wireless LAN control (Mobile app) 1.

  • Page 55: 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 56 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 57 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 58 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 59 • 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 60 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 61 • 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 62 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 63 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 64 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 65 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 66 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 67 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 68 1-8. Errors indicated by the Plasma air clean indicator Plasma air clean indicator lamp (Green) on the indoor unit operates according to the error. Error Plasma air clean [ ] (Green) Air cleaner assy does not work properly Blinks fast Intake grille closing failure Blinks slowly •...
  • Page 69 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 70 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) WHITE BLACK • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3. • If it is abnormal, check the parts below. –...
  • Page 71 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 receive the serial signal Detective actuator Fan motor from indoor unit more than 10 seconds.
  • Page 72 Check point 4. Check serial signal (Forward transfer signal) Check serial signal (Forward transfer signal) WHITE BLACK • Check if indicated value swings between AC 30 V and AC 130 V at outdoor unit terminal 2—3. • If it is abnormal, replace main PCB. •...
  • Page 73 2-3. E: 12.X. Wired remote controller communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 12 Indoor unit Main PCB →hen the indoor unit cannot receive the signal from Detective actuator →ired remote controller more than 1 minute during →ired remote control...
  • Page 74 2-4. 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 75 2-5. 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 76 2-6. 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 77 2-7. E: 26.X. Address setting error in wired remote controller (Indoor unit) Operation indicator 2 time flash Timer indicator 6 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 26 →ired remote controller (2-wire) • →hen the address number set by auto setting and manual setting are mixed in one remote controller group Detective actuator...
  • Page 78 2-8. E: 29.X. Connected unit number error (Indoor unit) Operation indicator 2 time flash Timer indicator 9 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 29 →ired remote controller (2-wire) →hen the number of the connected indoor unit exceeds Detective actuator the limitation.
  • Page 79 2-9. 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 80 2-10. 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 81 2-11. 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 82 2-12. 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 83 2-13. E: 3A.X. Indoor unit communication circuit (wired remote controller) error Operation indicator 3 time flash Timer indicator 10 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 3A →ired remote controller (2-wire) Detect the communication error of microcomputer and Detective actuator communication PCB.
  • Page 84 2-14. 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 85 2-15. 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 86 2-16. E: 44.X. Human sensor error Operation indicator 4 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 44 1. Detect the open condition of the sensor. Detective actuator Indoor unit main PCB 2.
  • Page 87 2-17. 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 88 2-18. E: 54.X. Electric air cleaner reverse VDD error (Indoor unit) Operation indicator 5 time flash Timer indicator 4 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 54 Plasma air clean →hen the plasma clean operation is off, and the Vmon unit Detective actuator Indoor unit...
  • Page 89 2-19. 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 90 2-20. 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 91 2-21. 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 92 2-22. 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 93 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. - (03-47) - 2-22. E: 65.↓. IPM error (Outdoor unit) 2.
  • Page 94 2-23. 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 95 2-24. E: 72.X. Compressor thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 2 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: 72 Outdoor unit main PCB →hen compressor temperature thermistor open or short Detective actuator circuit is detected at power on or while running the Compressor temperature thermistor...
  • Page 96 2-25. 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 97 2-26. 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 98 2-27. 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 Main PCB →hen input current sensor has detected 0 A, while inverter compressor is operating at higher than 56 rps, Detective actuator Outdoor unit...
  • Page 99 Check point 1-2. Check external cause at Indoor and Outdoor (Voltage drop or Noise) • Instant drop: Check if there is a large load electric apparatus in the same circuit. • Momentary power failure: Check if there is a defective contact or leak current in the power sup- ply circuit.
  • Page 100 2-28. 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 101 2-29. 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 102 2-30. 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 103 Check point 4. Check output voltage of main PCB Check outdoor unit circuit diagram and the voltage. (Measure at main PCB side con- nector) NOTE: For details of wiring diagram, refer to "→iring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-22. Read wire DC voltage Red—Black...
  • Page 104 2-31. 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 105 Check point 3. Check the solenoid coil and 4-way valve NOTE: Refer solenoid coil and 4-way valve in "Service parts information" on page 03-81. • Solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance value is 2.085 kΩ (at 68°F [20°C]).
  • Page 106 2-32. 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 107 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. - (03-61) - 2-32. E: A1.↓. Discharge temperature error (Outdoor unit) 2.
  • Page 108 2-33. E: A3.X. Compressor temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 3 time flash Indicator Indoor unit Economy indicator Continuous flash Error code E: A3 Outdoor unit main PCB Protection stop by compressor temperature ≥ 226°F Detective actuator (108°C) during compressor operation generated 2 times Compressor temperature thermistor...
  • Page 109 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. - (03-63) - 2-33. E: A3.↓. Compressor temperature error (Outdoor unit) 2.

  • Page 110: Troubleshooting Without Error Code

    3. Troubleshooting without error code 3-1. Indoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Isn’t the breaker down? • Check loose or removed connection cable. -> If abnormal condition is found, correct it by referring to the installation manual or the DESIGN & TECHNICAL MANUAL.

  • Page 111: Outdoor Unit-No Power

    3-2. Outdoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Is the circuit breaker on or off? • Check loose or removed connection cable. If abnormal condition is found, correct it by referring to the installation manual or the DESIGN & TECHNICAL MANUAL.

  • Page 112: No Operation (Power Is On)

    3-3. No operation (Power is on) Setting/ Connection failure Forecast of cause External cause Electrical components defective Check point 1. Check indoor and outdoor installation condition • Indoor unit: – Check incorrect wiring between indoor unit and remote controller. – Check if there is an open cable connection.

  • Page 113: No Cooling/No Heating

    3-4. No cooling/No heating Indoor unit error Outdoor unit error Forecast of cause Effect by surrounding environment Connection pipe/Connection wire failure Refrigeration cycle failure Check point 1. Check Indoor unit • Does Indoor unit fan run in the HIGH mode? •...
  • Page 114 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 115: 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 116: Ater Leaking

    3-6. Water leaking Erroneous installation Forecast of cause Drain hose failure Diagnosis method when water is spitting Diagnosis method when water leak occurs • Is main unit installed in stable condi- tion? Is the filter clogged? • Is main unit broken or deformed at the time of transportation or maintenance? MPa MPa •...

  • Page 117: Air Cleaner Assy Does Not Work Properly

    3-7. Air cleaner assy does not work properly Air cleaner assy is wet or dirty Forecast of cause Air cleaner assy failure Check point 1. Check the state of the Air cleaner assy. • If the Air cleaner assy is dirty, clean it. •...

  • Page 118: Intake Grille Closing Failure

    3-8. Intake grille closing failure Intake grille is not tightly closed Forecast of cause Intake grille assy failure Check point 1. Check the Intake grille is closed securely. • If the Intake grille is not tightly closed, close it. • After closing, restart the operation and check for errors.

  • Page 119: 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 120: 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 121 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 122: 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 123 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 124: 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 125: 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 126 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. - (03-80) - 4-5. Mobile app setting method 4. Troubleshooting with error code (For wireless LAN adapter)

  • Page 127: 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 128: Inverter Compressor

    5-2. Inverter compressor Check point 1. Check connection • Check terminal connection of compressor (loose or incorrect wiring) T(W) S(V) (BLACK) (WHITE) Main PCB R(U) (RED) • Check terminal connection of main PCB (loose or incorrect wiring) Main PCB W400(U) W401(V) W402(W) BLACK WHITE...

  • Page 129: 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 02-22. Check point 2.
  • Page 130 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 131: 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 132: 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 133: 4-Way Valve Coil (Solenoid Coil)/4-Way Valve

    5-6. 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 134: 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 135: 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 136 ¢ Heat exchanger temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) 95.57 0.24 -12.0 (-25.0) 68.89 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 137 ¢ 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 138 ¢ Compressor 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) 129.84 0.46 50.0 (10.0)

  • Page 139: Control And Functions

    4. CONTROL AND FUNCTIONS 2024.12.24 SR_CH04_AS147ES_01...
  • Page 140 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 141 CONTENTS (continued) 8-4. Compressor temperature protection ................04-34 8-5. Low outdoor temperature protection................04-34 8-6. High temperature and high pressure release control ............04-35...

  • Page 143: 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 144 • 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 145: 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 146: 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 147: 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 148 • 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 AOUH09KTAP1 D zone...

  • Page 149: 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, 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 150: 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?

  • Page 151: Fan Control

    3. Fan control Tr: Room temperature Ts: Setting temperature 3-1. Indoor fan control ¢ Fan speed Indoor fan speed is defined as below. Speed (rpm) Operation Fan mode mode ASUH09KTAS ASUH12KTAS ASUH15KTAS PO→ERFUL 1,400 1,400 1,450 HIGH 1,260 1,260 1,300 MED—HIGH 1,120 1,120...

  • Page 152: 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 153 ¢ 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 154 • 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) or setting fan mode* 86.0°F (30°C) 82.4°F S-LOW (28°C) *: Lower speed is selected. 7 minutes later: Indoor heat exchanger temperature rises...

  • Page 155: 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: AOUH09KTAP1 Fan speed is defined by outdoor temperature and rotation number of compressor. •...
  • Page 156  Model: AOUH12KTAP1 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 157  Model: AOUH15KTAP1 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 158: 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 159: Swing Operation

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

  • Page 160: 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 161: 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 162: Ired Remote Control

    5-2. Wired remote control Temperature On/Off timer Program timer Sleep timer Weekly timer Setback Timer ○ ○ ○ ○ ○ ¢ On/Off timer • Off timer: →hen the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...

  • Page 163: Weekly 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 164: Temperature Setback Timer

    ¢ 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 165: Defrost Operation Control

    6. Defrost operation control Tn: Outdoor unit heat exchanger temperature Tom: Outdoor heat exchanger middle temperature Ta: Outdoor temperature Tn10: Temperature at 10 minutes after compressor start Tnb: Temperature before 5 minutes Triggering condition • The defrost operation starts when outdoor unit heat exchanger temperature sensor detects the temperature lower than the values shown below.

  • Page 166: 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 167: 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 168: 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 169: Powerful Operation

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

  • Page 170: External Electrical Heater Control

    7-9. External electrical heater control The external electrical heater is operated as below. When the room Ts: Setting temperature temperature rises Heater : Off -1.8°F (Ts -1°C) -5.4°F (Ts -3°C) Heater : On -18.0°F (Ts -10°C) -21.6°F (Ts -12°C) Heater : Off When the room temperature drops NOTES:...

  • Page 171: Human Sensor For Energy Saving

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

  • Page 172: Base Pan Heater Control

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

  • Page 173: Unit Status Monitoring And The Detected Value Indication

    7-16. Unit status monitoring and the detected value indication The wired remote controller can monitor the indoor and outdoor units' status and display the detect- ed result as a relevant ID. For details of the display method, refer to the Chapter of “Display Sensor Values” in the Installation Manual of →ired Remote Controller (Touch Panel).
  • Page 174 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 175: 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 176: 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 177: Operation

    8-6. High temperature and high pressure release control The compressor is controlled as follows. • Cooling mode Indoor unit heat exchanger Indoor unit heat exchanger temperature rises temperature drops 141.8°F (61°C) Zone A 140.0°F (60°C) 138.2°F (59°C) Zone B 129.2°F (54°C) Zone C Zone D Stable zone...
  • Page 178 - (04-36) - 8-6. High temperature and high pressure release control 8. Various protections...
  • Page 179 5. FIELD WORKING 2024.12.24 SR_CH05_AS147ES_01...
  • Page 180 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 ............05-9 2. External input and output.................05-10 2-1. External input........................05-11 2-2. External output ......................05-14 2-3. Setting of external input and output ................05-16 2-4.

  • Page 181: 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 182: 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 183: Factory Setting

    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 184: Auto Restart

    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 185 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 186 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 187 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”...
  • Page 188 16) Heat pump backup setting Enables or disables the heat pump backup operation. Function number Setting value Setting description Factory setting Disable ♦ Enable 17) Emergency heat for external output terminal Enables or disables emergency heat input. Function number Setting value Setting description Factory setting Disable...

  • Page 189: Custom Code Setting For Wireless Remote Controller

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

  • Page 190: External Input And Output

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

  • Page 191: External Input

    2-1. External input →ith using external input function, some functions on this product can be controlled from an external device. • “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit. • A twisted pair cable (22 A→G) should be used. Maximum length of cable is 492 ft (150 m). •...

  • Page 192: External Input And Output Pcb

    ¢ 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 193: Input Signal Type

    ¢ Input signal type • Indoor unit Input signal type is only "Edge". Edge • External Input and Output PCB The input signal type can be selected. Signal type (edge or pulse) can be switched by the DIP switch 2 (S→302) on the External Input and Output PCB.

  • Page 194: 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 (22 A→G)should be used. Maximum length of cable is 82 ft (25 m). •...
  • Page 195 ¢ External Input and Output PCB • A twisted pair cable (22A→G) 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 196: Setting Of External Input And Output

    2-3. Setting of external input and output • Indoor unit Input Connection point Function setting number 46 Function Operation/Stop mode 1 (R.C. enabled) (Setting prohibited) CN46 Forced stop mode Operation/Stop mode 2 (R.C. disabled) Output Connection point Function setting number 60 Function Operation/Stop 01 to 04...
  • Page 197 • External Input and Output PCB Switch setting Ex IN Ex OUT Rotary SW302 CN313 CN314 CN310 CN311 CN312 switch Edge Operation/Stop Not available Indoor unit fan Operation/Stop Error status operation Pulse Operation Stop status Indoor unit fan Forced External heater Not available Error status operation...

  • Page 198: Details Of Control Input Function

    2-4. Details of control input function ¢ Operation/Stop mode 1 • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary SW302 switch Operation — Input of indoor unit CN46 Stop 46-00 Operation External Input and...
  • Page 199 ¢ Forced stop • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary SW302 switch Forced stop (R.C. disabled) — Input of indoor unit CN46 Normal (R.C. enabled) 46-02 Forced stop (R.C.

  • Page 200: Operation/Stop Mode

    ¢ Operation/Stop mode 2 • In the case of “Edge” input External Input and Output PCB Function External input Input signal Command setting Rotary SW302 switch Operation (R.C. enabled) — Input of indoor unit CN46 Stop (R.C. disabled) 46-03 Operation (R.C.

  • Page 201: Forced Thermostat Off

    ¢ Forced thermostat off External Input and Output External input Input signal Command Rotary switch Thermostat off External Input and 2, B, C, D CN313 Output PCB Normal operation Thermostat off External Input and 4, 7, 8, A CN313 Output PCB Normal operation CN313 Compressor...

  • Page 202: Details Of Control Output Function

    2-5. Details of control output function ¢ Operation status External Input and Function Output PCB External output Output signal Status setting Rotary switch Operation 60-00 1, 2, 8 Output of indoor unit CN47 60-06 Stop Operation External Input and — 1, B, C, D CN310 Output PCB...

  • Page 203: Indoor Unit Fan Operation Status

    ¢ Indoor unit fan operation status External Input and Function Output PCB External output Output signal Status setting Rotary switch Fan run 60-10 Output of indoor unit CN47 Fan stop Fan run External Input and — 2, 3, 7, 8, B, D CN311 Output PCB Fan stop...

  • Page 204: External Heater Output

    ¢ External heater output Function setting Indoor unit Control Primary heater Auxiliary heater Control switching external heaters No. 61 Auxiliary heater control 1 Heat pump External device* 61-00 Auxiliary heater control 2 Heat pump External device 61-01 Heat pump prohibition External device None 61-02...
  • Page 205 • 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 heat- ing device. - (05-25) - 2-5.
  • Page 206  Auxiliary equipment control by room temperature Auxiliary equipment control is switchable by room temperature. Auxiliary equipment switching is per- formed for each room temperature divided to following 3 zones. Zone A Ts +0.9°F (0.5 °C) Ts: Setting temperature Ts -0.9°F (-0.5 °C) Tr: Room temperature Zone B Zone C...

  • Page 207: Auxiliary Heater Control

     Auxiliary heater control 1 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 • Error occurred •...
  • Page 208  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 209  Auxiliary heater control by outdoor temperature 1 This control selects heat pump or external heater according to the outdoor temperature. →hen 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 210 • 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 only zone prohibition 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 211  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 212 • 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 prohibition Combination zone 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 213  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 214 NOTE: In following operations, compressor will be on in heat pump prohibition zone. • Other than heating • Test run - (05-34) - 2-5. Details of control output function 2. External input and output...
  • Page 215  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 216  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 217 • 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 prohibition Combination zone 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 218  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 219 • 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 220  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 221 • 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 222: Heating Thermostat On For Humidifier

    ¢ 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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