Fault Codes / Haier / F3

HA

Haier F3

High

MRV 5 — IPM & main PCB communication error.

Haier F3: IPM & main PCB communication error. This fault noticeably affects operation.

Possible causes

Internal IPM-main PCB link loose/faulty.

Check steps

Power off: reseat IPM/main PCB connectors.

Affected parts

Inverter-PCB
Außen-PCB

Safety note

High voltage! Let capacitors discharge.

Source: Haier H-MRV / MRV5 Service Manual — Error Code Table

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

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