Fault Codes / Viessmann / BF
Vitocal — Communication module wrong/faulty.
Viessmann BF: Communication module wrong/faulty. This fault usually isn't an immediate stop, but should be checked soon.
Source: Viessmann resmi servis kılavuzu — Manual p.41: 'BF Kommunikationsmodul' = Falsches Kommunikationsmodul LON. Matches Enthalio DB exactly.
Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.
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