Fault Codes / Mitsubishi Electric / 6607

Mitsubishi Electric 6607

High

City Multi — No ACK error — transmission fault.

Mitsubishi Electric 6607: No ACK error — transmission fault. This fault noticeably affects operation.

Possible causes

IC transmission wiring faulty/loose (CN2M).
Address changed during operation / PCB faulty.

Check steps

Check transmission line & ~25V.
Units off 5 min, then on; check CN2M.

Affected parts

Übertragungsleitung
Innen-PCB

Safety note

Low voltage — work carefully.

Source: Mitsubishi Electric resmi servis kılavuzu — CityMultiErrorCode_V3.pdf p.6 (PUCY-YKA/YKD/YKE): '6607 No ACK error - Check voltage of the transmission line for ~25V... Indoor unit controller failure, ME remote controller failure'.

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

Look up in Enthalio →

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