Stiebel Eltron 10015

Critical

WPL / WPMsystem — Frost protection monitor triggered in defrost mode.

Stiebel Eltron 10015: Frost protection monitor triggered in defrost mode. This fault typically halts operation and needs immediate attention.

Possible causes

Water flow rate too low.
Water temperature too low.

Check steps

Check & ensure heating-side flow.
Vent circuit, check pump & filter.

Affected parts

Umwälzpumpe
Schmutzfilter

Safety note

Frost risk to heat exchanger – act fast.

Source: Stiebel Eltron resmi servis kılavuzu — PDF p.2 (line 33-36): '10015 Wärmepumpe Der Frostschutz-Wächter im Abtaubetrieb hat ausgelöst. Wasservolumenstrom zu niedrig, Wassertemperatur zu niedrig.' Exact match.

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

Look up in Enthalio →

Related fault codes

High pressure limiter responded.10004 Low pressure switch triggered.10005 Compressor or starting contactor stuck.10002 Hot gas temperature exceeded the limit.10024 HP does not rise above LP after compressor sta10027 Compressor thermistor protection relay trigger30054