Fault Codes / Viessmann / A6

VI

Viessmann A6

High

Vitocal — Secondary pump fault.

Viessmann A6: Secondary pump fault. This fault noticeably affects operation.

Possible causes

Pump blocked / faulty / wiring.
Air in secondary circuit.

Check steps

Check pump, wiring & bleeding.
Free/replace pump.

Affected parts

Sekundärpumpe

Safety note

230V — isolate power.

Source: Viessmann resmi servis kılavuzu — Manual p.36: 'A6 Sekundärpumpe' = Kein Volumenstrom im Sekundärkreis. Matches Enthalio DB.

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

Look up in Enthalio →

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