Wolf 701

Critical

CHA / BWL — Low pressure fault (NDS) — low pressure switch in the refrigerant circuit triggered.

Wolf 701: Low pressure fault (NDS) — low pressure switch in the refrigerant circuit triggered. This fault typically halts operation and needs immediate attention.

Possible causes

Low refrigerant charge, liquid line restriction, or low evaporator airflow.

Check steps

Check refrigerant charge, liquid line, and evaporator airflow.

Affected parts

Niederdruckpressostat

Safety note

Refrigerant under pressure — use PPE.

Source: Wolf Fehlercode-Liste (offizielle Wolf-Dokumentation), Abschnitt "Fehlercodes der Wärmepumpen BWL" (emax-haustechnik.de Spiegel)

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

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