Bosch H01 (5303)

Critical

Compress — Z1 temperature too high (compressor protection).

Bosch H01 (5303): Z1 temperature too high (compressor protection). This fault typically halts operation and needs immediate attention.

Possible causes

Control temp repeatedly >110 °C (see 5302).

Check steps

Check causes as 5302 (flow/pressure/charge).

Affected parts

Verdichter
Sensoren

Safety note

Hot discharge side & follow F-Gas.

Source: Bosch resmi servis kılavuzu — Doc: 'H01 Customer Alarm Z1 Temperature too high on compressor control system... The temperature of the inverters' compressor control system > 110°C.'

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

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Related fault codes

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