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Fujitsu Fault Codes Flashing Light
Sensor Light Codes
LED Codes
Fujitsu Error Codes List
Fujitsu Fault Codes Flashing Lights
Sensor Light Codes
| Red Light Sensor | Green Light Sensor | Meaning |
|---|---|---|
| 2 blinks | 2 blinks | Indoor air sensor failure |
| 2 blinks | 3 blinks | Indoor unit pipe sensor failure |
| 2 blinks | 4 blink | Indoor heat exchanger sensor error |
| 2 blinks | 6 blinks | Float switch operated |
| 3 blinks | 4 blinks | Outdoor unit air sensor failure |
| 3 blinks | 7 blinks | Heatsink sensor error |
| 4 blinks | 4 blinks | Power failure |
| 5 blinks | 5 blinks | Compressor failure |
| 5 blinks | 6 blinks | Outdoor fan failure |
| 7 blinks | 2 blinks | High discharge temperature |
| 7 blinks | 3 blinks | High pressure |
| 7 blinks | 4 blinks | 4-way discharge valve abnormal |
| 7 blinks | 5 blinks | Pressure switch fail |
| 7 blinks | 6 blinks | Compressor temperature error |
| 8 blinks | 4 blinks | PFC circuit error |
| Consistent blinking | Consistent blinking | PCB failure |
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
