Viessmann D1

Critical

Vitocal — Compressor — safety chain tripped.

Viessmann D1: Compressor — safety chain tripped. This fault typically halts operation and needs immediate attention.

Possible causes

Safety device (HP/LP/motor protect) tripped.
Wiring/contactor faulty.

Check steps

Check safety chain (HP/LP/motor protector).
Check contactor & wiring.

Affected parts

Verdichter
Druckschalter
Schütz

Safety note

High voltage & high pressure — caution. Follow F-Gas.

Source: Viessmann resmi servis kılavuzu — Manual p.44: 'D1 Verdichter, Sicherh.' = Thermorelais Verdichter oder Sicherheitselement hat ausgelöst. Matches Enthalio DB 'Sicherheitskette ausgelöst'.

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

Look up in Enthalio →

Related fault codes

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