Viessmann 10

Medium

Vitocal — Outside temperature sensor — short circuit.

Viessmann 10: Outside temperature sensor — short circuit. This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Sensor (Ni 500) shorted.

Check steps

Check resistance (Ni 500) at connector F0.
Replace sensor if faulty.

Affected parts

Außentemperatursensor (Ni 500)

Safety note

Isolate power.

Source: Viessmann resmi servis kılavuzu — Serviceanleitung WO1C, section '10 Außentemp.sensor' (p.90): 'Zur Berechnung des Vorlauftemperatur-Sollwerts wird ein Außentemperaturwert von -40 °C verwendet. Ursache: Kurzschluss Außentemperatursensor.'

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

Look up in Enthalio →

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