Wolf 711

Medium

CHA / BWL — Outdoor temperature sensor (S-TA) — open/short circuit, controller falls back to a fixed -5°C value.

Wolf 711: Outdoor temperature sensor (S-TA) — open/short circuit, controller falls back to a fixed -5°C value. This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Sensor faulty or wiring open/shorted.

Check steps

Measure sensor resistance, check wiring.

Affected parts

Außentemperaturfühler

Safety note

Isolate power before testing.

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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