Fault Codes / Mitsubishi Electric / P8

Mr. Slim — Pipe temperature error (often defrost/thermistor).

Possible causes

• Iced evaporator / poor heat transfer.
• Pipe thermistor misfitted/faulty.
• Low refrigerant.

Check steps

• Check evaporator & airflow.
• Check pipe thermistor (TH2/TH5).
• Check charge.

Affected parts

• Rohr-Thermistor

Safety note

Source: Mitsubishi Electric resmi servis kılavuzu — Same official reference, 'Output pattern A' table: 'P8 — Pipe temperature error / Abnormality in outdoor unit'; detailed table (PUY-P/PUY-M outdoor unit, item 18): 'P8 — Abnormality of pipe temperature — Check if indoor thermistors (TH2 and TH5) are not disconnected from holder.…

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

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