Fault Codes / Aux / E4

AU

Aux E4

High

Indoor fan motor (PG) feedback abnormal

Aux E4: Indoor fan motor (PG) feedback abnormal This fault noticeably affects operation.

Possible causes

Fan motor jammed or faulty
Loose motor connector / missing speed signal

Check steps

Check fan motor free rotation by hand
Check motor connector and speed feedback

Affected parts

Lüfter (PG-Motor)
Platine (Innengerät)

Safety note

De-energize before working on the fan.

Source: AUX Troubleshooting Guide, s.9 §(5)

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

Look up in Enthalio →

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