Stiebel Eltron 10004

Critical

WPL / WPMsystem — High pressure limiter responded.

Stiebel Eltron 10004: High pressure limiter responded. This fault typically halts operation and needs immediate attention.

Possible causes

Heating-side flow too low.
Room temp / heating curve too high.

Check steps

Check flow & sensors on heating side.
Reduce curve, vent heating circuit.

Affected parts

Heizungsumwälzpumpe
Schmutzfilter

Safety note

Refrigerant under HP – qualified only.

Source: Stiebel Eltron resmi servis kılavuzu — PDF p.2 (extracted line 20-22): '10004 Wärmepumpe Der Hochdruckwächter hat geschaltet. Volumenstrom und Fühlerankopplung der Heizungsseite prüfen. Die eingestellte Raumtemperatur oder Heizkurve prüfen

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

Look up in Enthalio →

Related fault codes

Low pressure switch triggered.10005 Compressor or starting contactor stuck.10002 Hot gas temperature exceeded the limit.10024 Frost protection monitor triggered in defrost 10015 HP does not rise above LP after compressor sta10027 Compressor thermistor protection relay trigger30054