Midea E1

Critical

Communication error between indoor and outdoor units.

Midea E1: Communication error between indoor and outdoor units. This fault typically halts operation and needs immediate attention.

Possible causes

Interconnect wire broken/swapped.
Indoor PCB faulty.

Check steps

Check interconnect wiring and polarity.
Measure signal voltage at comm terminal.

Affected parts

Verkabelung / Innen-Platine

Safety note

230V — isolate power.

Source: Midea 2nd Gen VRF Servis Kılavuzu, Tablo 5.1 s.32 — DÜZELTİLDİ (2026-07-04): kod önceden yanlışlıkla 'Phasenfolgefehler' olarak etiketlenmişti (o kod aslında L7), kılavuz E1='Kommunikationsfehler' diyor

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

Look up in Enthalio →

Related fault codes

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