Fault Codes / Stiebel Eltron / 20057

Stiebel Eltron 20057

Critical

WPL / WPMsystem — Inverter main fault: IGBT overcurrent.

Stiebel Eltron 20057: Inverter main fault: IGBT overcurrent. This fault typically halts operation and needs immediate attention.

Possible causes

Inverter fault (IGBT/load/compressor).

Check steps

Check inverter & compressor connection.
Measure compressor winding/insulation.

Affected parts

Frequenzumrichter
Verdichter

Safety note

High voltage! Let capacitors discharge before work.

Source: Stiebel Eltron resmi servis kılavuzu — STIEBEL ELTRON "NOTIFICATION LIST — Messages from the WPMsystem" (Doc. WPM 205311, V2.4), p.3: "20057 | Heat pump | Major inverter fault: Inverter IGBT excess current | Inverter fault". Source: stiebel-eltron-usa.com/sites/default/files/pdf/wpm-notifications-list.pdf

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

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