Bosch A01 (5350)

Critical

Compress — Compressor control failure – not running / locked rotor.

Bosch A01 (5350): Compressor control failure – not running / locked rotor. This fault typically halts operation and needs immediate attention.

Possible causes

Supply voltage outside 180–253 VAC.
Bad inverter↔compressor cabling.

Check steps

Measure voltage, check cabling.
Check A/P selector on HP board.

Affected parts

Inverter
Kompressor
HP-Platine

Safety note

High voltage – do not open DC link.

Source: Bosch resmi servis kılavuzu — Alarm List 8754, code 5350, Display Code A01, Installer: "Info Z1 Control failure on compressor — Compressor does not run, locked rotor." Matches app's 'Kompressor läuft nicht / blockierter Rotor.'

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