Fault Codes / Bosch / A01 (5922)

Bosch A01 (5922)

High

Compress — Supply voltage to pump PC0 too high.

Bosch A01 (5922): Supply voltage to pump PC0 too high. This fault noticeably affects operation.

Possible causes

Overvoltage at pump PC0.

Check steps

Measure supply voltage at PC0.
Check wiring/mains.

Affected parts

Heizkreispumpe PC0

Safety note

High voltage — caution.

Source: Bosch resmi servis kılavuzu — Doc: 'A01 Customer Alarm: Supply voltage for heating pump PC0 too high. Heat carrier pump PC0 reports overvoltage on its supply phase.'

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

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