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Midea MSMBB-12CRDN1-MP0W - Indoor; Outdoor Unit’s Communication Diagnosis and Solution

Midea MSMBB-12CRDN1-MP0W
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9.3.2 Indoor / outdoor unit’s communication diagnosis and solution(E1)
Error Code
E1
Malfunction decision
conditions
Indoor unit does not receive the feedback from outdoor unit during
110 seconds and this condition happens four times continuously.
Supposed causes ● Wiring mistake
● Indoor or outdoor PCB faulty
Trouble shooting:

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