Fault Codes / Fujitsu / 42

FU

Fujitsu 42

High

Indoor unit heat exchanger sensor error.

Fujitsu 42: Indoor unit heat exchanger sensor error. This fault noticeably affects operation.

Possible causes

Coil sensor open/short.
Connector loose.

Check steps

Check sensor connector.
Measure resistance (NTC ~10kΩ at 25°C).

Affected parts

Spulenfühler

Safety note

230V — isolate power.

Source: Fujitsu General Service Manual SR_AS092EF_01, s.03-31

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

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