Bosch H01 (5524)

Critical

Compress — Internal error in inverter — replace inverter.

Bosch H01 (5524): Internal error in inverter — replace inverter. This fault typically halts operation and needs immediate attention.

Possible causes

Inverter defective.

Check steps

Power off: replace inverter.

Affected parts

Inverter

Safety note

High voltage! Let capacitors discharge.

Source: Bosch/IVT/Buderus Compress Wärmepumpe Alarm-Tabelle (lvisawo.fi/jseducation.se resmi servis kılavuzu aynası) — Confirmed via direct PDF read p.24: code 5524, Customer, 'Alarm Z1 Internal compressor driver error 3', triggered by 3x warning 5523 in 3 hours or 30 min active, cause 'Internal error in inverter', ac

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