Error code

Mitsubishi Electric SLZ code E7

No approved translation for this record yet; showing the original text.

Meaning

units are connected to one outdoor unit, indoor controller board cannot receive a signal for 3 minutes from outdoor controller circuit board, a signal which allows outdoor controller circuit board to transmit signals. Indoor/outdoor unit communication error (Transmitting error) Abnormal if “1” receiving is detected 30 times continuously though indoor controller board

Member details

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Possible causes

circuit of indoor controller board Noise has entered into indoor/ outdoor unit connecting wire. Defective transmitting receiving circuit of indoor controller board Noise has entered into power supply.

Solution

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