Error code

Mitsubishi Electric PLA code E4

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Meaning

Remote controller signal receiving error Abnormal if indoor controller board can 1 not receive normally any data from remote controller or from other indoor controller board for three minutes. Indoor control board cannot receive any 2 signal from remote controller for two minutes.

Member details

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Possible causes

(1) Contact failure at transmission wire of remote controller (2) All remote controllers are set as “sub” remote controller. In this case, E0 is displayed on remote controller, and E4 is displayed at LED (LED1, LED2) on the outdoor controller circuit board. (3) Defective transmitting receiving circuit of remote controller (4) Defective transmitting receiving circuit of indoor controller board. (5) Noise has entered into the transmission wire of remote controller.

Solution

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