Error code

Mitsubishi Electric PSA code E7

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Meaning

Indoor/outdoor unit communication error (Transmitting error) Abnormal if “1” receiving is detected 30 times continuously though indoor controller board has transmitted “0”.

Member details

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Possible causes

(1) Defective transmitting receiving circuit of indoor controller board (2) Noise has entered into power supply. (3) Noise has entered into outdoor control wire.

Solution

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