Fault Codes / Viessmann / 05

Viessmann 05

High

Vitocal — Refrigerant circuit fault (EEV controller).

Viessmann 05: Refrigerant circuit fault (EEV controller). This fault noticeably affects operation.

Possible causes

Fault from refrigerant/EEV controller.

Check steps

Check messages in "refrigerant controller diagnostics".
Check temp/pressure sensors in refrigerant circuit.

Affected parts

Kältekreisregler
Sensoren

Safety note

Follow F-Gas.

Source: Viessmann resmi servis kılavuzu — Viessmann Vitotronic 200 (Typ WO1A/WO1B) Serviceanleitung für die Fachkraft, Diagnose-Kapitel (S. ~80-83): Fehlercode 05 = "Störung Kältekreis (1. Stufe)" — Meldung vom Kältekreisregler (EEV-Regler) der Wärmepumpe 1. Stufe; genaue Ursache steht in der Kältekreis-Meldungshistorie.…

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

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