Fujitsu fault codes normally appear on the air conditioner’s display to let you know when something has gone awry. These error codes indicate the underlying problem with your Fujitsu air conditioner so you can take the necessary steps to solve the problem. Always refer to your user's manual for troubleshooting tips, or check out our Fujitsu troubleshooting guide.
In this article, we’ll show you the complete list of Fujitsu fault codes and how to read them so you can fix any issue affecting your AC unit. Most Fujitsu air conditioner units would have numerical error codes displayed on the indoor unit or remote controller display, but some may use flashing lights instead of error codes.
Also read: Common Aircon Problems and How to Troubleshoot Them
Fujitsu Fault Codes Flashing Lights
Sensor Light Codes
LED Codes
- 1 flash: Indoor and outdoor unit communication error
- 2 flash: Discharge pipe temperature sensor
- 3 flash: Outdoor heat exchanger temperature (outlet) sensor
- 4 flash: Outdoor temperature sensor error
- 5 flash: Outdoor heat exchanger temperature (mid) sensor
- 6 flash: Discharge pipe temperature abnormal
- 7 flash: Compressor temperature sensor
- 8 flash: Heat sink temperature sensor
- 9 flash: Pressure switch abnormal
- 10 flash: Compressor temperature abnormal
- 12 flash: IPM error
- 13 flash: Compressor rotor position cannot detect
- 14 flash: Compressor error
- 15 flash: Outdoor fan abnormal (upper fan)
- 16 flash: Outdoor fan abnormal (lower fan)
- 5 sec on/ 0.1 sec off repeat: PAM voltage abnormality
- 5 sec on/ 1 sec off repeat: Protect operation
- 5 sec on/ 2 sec off repeat: PFC surge protection (permanent stop)
- 5 sec on/ 5 sec off repeat: Fan malfunction
- 2 sec on/ 2 sec off repeat: CT abnormality
- 2 sec on/ 5 sec off repeat: Compressor temperature protection (permanent stop)
- 1 sec on/ 1 sec off repeat: Pump down operation
- 0.5 sec on/ 0.5 sec off repeat: Current surge protection
- 0.1 sec on/ 0.1 sec off repeat: Thermistor malfunction
- 0.1 sec on/ 2 sec off repeat: Compressor position detection malfunction
Fujitsu Error Codes List
- 00: Communication error between indoor unit and remote control
- 01: Communication error between indoor unit and outdoor unit
- 02: Room sensor open
- 03: Room sensor short
- 04: Indoor unit pipe sensor open
- 05: Indoor unit pipe sensor short
- 06: Outdoor pipe sensor open
- 07: Outdoor pipe sensor short
- 08: Power source connection failure
- 09: Float switch
- 0A: Outdoor unit sensor open
- 0B: Outdoor unit air sensor short
- 0C: Discharge sensor fail
- 0D: Discharge sensor short
- 0E: Outdoor high pressure heatsink error
- 0F: High discharge temperature
- 11: Communication error between indoor and outdoor units
- 12: Remote control communication error
- 18: External communication error
- 1A: Compressor failure
- 1B: Outdoor fan failure
- 1C: Inverter to PCB communication error
- 1D: Two-way valve sensor failure
- 1E: Expanse valve error
- 1F: Connection ID unit error
- 22: Indoor unit capacity abnormal
- 24: Excessive high pressure protection on cooling
- 25: PFC circuit error
- 26: Indoor unit address setting error
- 27: Indoor signal error
- 28: Indoor heat exchanger temperature error
- 29: Connection unit number error in wired remote control system
- 2A: Power supply frequency detection error
- 2B: Compressor temperature error
- 2C: Four-way valve abnormal
- 2D: Heat sink thermistor failure
- 2E: Inverter error
- 2F: Low pressure error
- 32: Indoor unit main PCB error
- 35: Indoor unit manual auto switch error
- 3A: Indoor unit communication circuit (wired remote) error
- 41: Indoor unit room temperature thermistor error
- 42: Indoor unit heat exchange temperature thermistor error
- 51: Indoor unit fan motor error
- 53: Indoor unit water drain abnormal
- 57: Indoor unit damper error
- 58: Indoor unit intake grille position error
- 62: Outdoor unit main PCB error
- 64: Outdoor unit active filter / PFC circuit error
- 65: Outdoor unit IPM error
- 71: Outdoor unit discharge temperature thermistor error
- 72: Outdoor unit compressor temperature thermistor error
- 73: Outdoor unit heat exchange temperature thermistor error
- 74: Outdoor air temperature thermistor error
- 76: Outdoor unit operating valve thermistor error
- 77: Outdoor unit heat sink temperature thermistor error
- 86: Outdoor unit pressure sensor error
- 94: Outdoor unit trip detection
- 95: Outdoor unit compressor motor control error
- 97: Outdoor unit fan motor 1 error
- 99: Outdoor unit 4-way valve error
- A1: Outdoor unit discharge temperature 1 error
- A3: Outdoor unit compressor temperature error
Familiarizing yourself with your air conditioner’s error codes is the first step to resolving any issue with your unit, but no one said that you had to face these problems alone. Luce offers a wide range of services to make regular maintenance of your air conditioner unit easy and effortless so that it continues performing at its best for you and your loved ones.
Send us a message and schedule your first appointment today!
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