Error code

Mitsubishi Electric PUH code E9

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

Meaning

Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit) (1) Abnormal if “0” receiving is detected 30 times continuously though indoor controller has transmitted “1”. (2) Abnormal if outdoor controller could not find blank of transmission path for 3 minutes.

Member details

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Possible causes

(1) Defective communication circuit of outdoor controller (2) Noise has entered power supply. (3) Noise has entered indoor/ outdoor unit connecting wire. (4) Indoor/ outdoor unit connecting wire has contact failure. (5) Defective communication circuit between indoor and outdoor unit on indoor controller board

Solution

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