Fault Codes / Vaillant / F.774
flexoTHERM/aroTHERM — Sensor fault: air inlet temperature.
Vaillant F.774: Sensor fault: air inlet temperature. This fault usually isn't an immediate stop, but should be checked soon.
Source: Vaillant resmi servis kılavuzu — ManualsLib s.40: 'F.774 – Sensor fault: Air inlet temperature'
Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.
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