Bosch A01 (5989)

Critical

Compress — Phase lost to compressor winding.

Bosch A01 (5989): Phase lost to compressor winding. This fault typically halts operation and needs immediate attention.

Possible causes

Missing phase / loose terminal / winding open.

Check steps

Check all phases & terminals at compressor.
Measure winding continuity.

Affected parts

Verdichter

Safety note

400V — isolate power.

Source: Bosch resmi servis kılavuzu — Doc: 'A01 Customer Alarm: No phase betw. inverter control and compressor motor. Phase lost to compressor winding.'

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

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