Fujitsu Air-conditioning Error Codes
If faults are occurring on your Fujitsu air conditioning system, it is very important to discover it quickly. Error codes are a great way to find out the initial problem. Error codes are usually displayed on your remote.
If you can’t find what you are looking for, give us a call on 0203 488 1889 and we will be happy to help.
Fujitsu air-conditioning error codes:
| Error Code | Meaning |
|---|---|
| OO | ID to RC Comms Fail |
| O1 | ID to OD Comms Fail |
| O2 | ID Air Sensor Open |
| O3 | ID Air Sensor Close |
| O4 | ID Pipe Sensor Open |
| O5 | ID Pipe Sensor Close |
| O6 | OD Pipe Sensor Fail |
| O8 | Power Source Connection Failure |
| O9 | Drain Problem Float switch operated |
| OA | OD Air Sensor Fail |
| OC | Discharge sensor Fail |
| OE | Outdoor High Pressure Heatsink error |
| 11 | OD PCB Fail |
| 12 | ID Fan Fail |
| 13 | OD Signal Abnormal ID signal error |
| 14 | OD EEPROM Fail |
| 15 | Compressor Temp Failure |
| 16 | Pressure Switch Error |
| 17 | IPM Error |
| 18 | CT Error |
| 19 | Active Filter Module Error |
| 1A | Compressor Failure |
| 1B | OD Fan Failure |
| 1C | Inverter to PCB Comms Fail |
| 1D | 2 Way Valve sensor Fail |
| 1E | Expansion Valve Error |
| 1F | Connection ID Unit Error |
| 20 | Indoor manual switch abnormal |
| 24 | Excessive high pressure protection on cooling |
| 25 | PFC circuit error |
| 26 | Indoor signal error |
| 27 | Indoor signal error |
| 28 | Indoor heat exchanger temperature error |
| 29 | Outdoor heat exchanger temperature (middle) error |
| 2A | Power supply frequency detection error |
| 2B | Compressor temperature error |
| 2C | Four-way valve abnormal |
Or look for the AC light blinking
| Error Code | Meaning |
| 1 flash | Communication error (Indoor unit – Outdoor unit) |
| 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 cannot operate |
| 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 |
| Off | Normal Operating Mode or Power Supply Plug Disconnected |
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