Fault Codes / Bosch / H01 (5331)

Bosch H01 (5331)

High

Compress — Inverter system communication fault.

Bosch H01 (5331): Inverter system communication fault. This fault noticeably affects operation.

Possible causes

Modbus link to inverter disturbed (>30% errors).

Check steps

Check Modbus cabling to inverter.
Check inverter & power.

Affected parts

Inverter
Modbus-Leitung

Safety note

High voltage! Let capacitors discharge.

Source: Bosch resmi servis kılavuzu — CORRECTION to researcher: independent source (IVT_errorcodes.json) shows code 5331 = 'Z1 Communication fault to compressor control system (Alarm)', triggered when >30% of inverter comm data returns errors — this plausibl

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