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Fujitsu Air Conditioner Error Codes
Find the code shown on your Fujitsu air conditioner and get a plain-English explanation with step-by-step fixes, easiest first. We cover 20 Fujitsu air conditioner codes, including 11, 12, 18, 32.
All 20 Fujitsu air conditioner codes
- 11Indoor and outdoor units can't communicate
- 12Wired remote controller communication error
- 18External or Wi-Fi adapter communication error
- 32Indoor unit control board error
- 35MANUAL AUTO button stuck
- 41Room temperature sensor error
- 42Indoor coil temperature sensor error
- 51Indoor fan motor error
- 53Drain pump error
- 62Outdoor unit main board error
- 63Inverter error
- 65IPM (power module) protection
- 71-74Outdoor unit temperature sensor error
- 94Compressor overcurrent (trip detection)
- 95Compressor motor control error
- 97Outdoor fan motor error
- 99Reversing (4-way) valve error
- A1Discharge temperature too high
- A3Compressor temperature too high
- A5Low pressure error
About Fujitsu air conditioner error codes
Fujitsu air conditioners and heat pumps come from Fujitsu General, a Japanese manufacturer. Many Fujitsu units report faults through a pattern of blinking indicator lamps, and newer remotes and controllers can show the code directly.
Of the 20 codes on this page, 0 usually have a simple fix you can do yourself, and 14 usually need a technician. Each guide tells you which is which, so you don't pay for a service call you don't need, and you don't attempt a repair that isn't safe.
Before you start
- Write down your model number. It's on a sticker, usually inside the door or lid, on the frame, or on the back or side panel. Parts and some code meanings depend on it.
- Try a reset. Unplug the air conditioner or switch off its breaker for 10 minutes. This clears many one-off glitches without tools.
- Clean or replace the air filter first. A dirty filter causes many airflow and freezing codes.
- Never open refrigerant lines or electrical panels. Those are jobs for a licensed HVAC technician.