Fault Codes / Mitsubishi Electric / E6

Mr. Slim — Indoor/outdoor communication error.

Possible causes

• S1/S2/S3 wiring wrong / swapped.
• Outdoor powered up before indoor.
• Missing shielding.

Check steps

• Check S1/S2/S3 wiring & polarity.
• Restart both units together.
• Check cable shielding.

Affected parts

• Verbindungsleitung

Safety note

Source: Mitsubishi Electric resmi servis kılavuzu — Mitsubishi Electric official Mr. SLIM Indoor/Outdoor Unit self-check code reference (PLY-ZM/PLY-M/PEY-M/PCY-M series manual, doc date 20241024), 'Output pattern A' table: 'E6, E7 — Indoor/outdoor unit communication error'. Also confirmed in PUY-P/PUY-M outdoor unit table: 'E6 / E…

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

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