Fault Codes / Haier / F21
MRV 5 — Defrost temperature sensor fault.
Haier F21: Defrost temperature sensor fault. This fault usually isn't an immediate stop, but should be checked soon.
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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