Fault Codes / Bitzer / 4302

High

ECOLINE / IQ Module — PTC motor winding sensor fault / sensor cold.

Possible causes

• PTC sensor faulty or wire break.

Check steps

• Measure PTC resistance (cold ~750 Ω), check wiring.

Affected parts

• PTC-Motorfühler

Safety note

Source: Bitzer CM-RC Reference Manual

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

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