Fault Codes / Viessmann / 52
Vitocal — DHW tank sensor (bottom) fault.
Viessmann 52: DHW tank sensor (bottom) fault. This fault usually isn't an immediate stop, but should be checked soon.
Source: Viessmann resmi servis kılavuzu — Manual p.32: '52 Speichersensor unten' = Kurzschluss Speichertemperatursensor unten. Matches Enthalio DB.
Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.
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