Fault Codes / Stiebel Eltron / 10028

High

WPL / WPMsystem — Superheat at evaporator outlet/compressor inlet too long below limit.

Possible causes

• EXV not working correctly.

Check steps

• Check EXV & superheat.
• Check charge.

Affected parts

• Expansionsventil

Safety note

Source: Stiebel Eltron resmi servis kılavuzu — PDF p.2 (line 55-58): '10028 Wärmepumpe Überhitzung des Kältemittels am Verdampferaustritt oder am Verdichtereintritt zu lange unterhalb des erlaubten Grenzwertes. Expansionsventil arbeitet nicht rich

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

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