Fujitsu · Air Conditioner error code

94Compressor overcurrent (trip detection)

Cross-checked High-voltage / caution

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

Related diagnostic guides

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Central AC won't come back after a power outage or breaker trip

After power returns, thermostats and some outdoor units hold off the compressor for a few minutes. If nothing starts after that, check the thermostat, both breakers, the outdoor disconnect, the float switch and the low-voltage fuse before suspecting parts damaged by a surge.

5 steps ~30 mineasy

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Find out when it trips: instantly (short to ground), at compressor start (hard start, bad capacitor, weak breaker) or after running (overload, loose connection heating up). Never upsize a breaker beyond the nameplate maximum.

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