Error code

Mitsubishi Electric PUH code A2

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Meaning

Hard ware error of transmission Pline Transmission processor intended to transmit “0”, but “1” appeared on transmission wire. Note) The address and attribute display at remote controller indicate the controller that detected abnormality.

Member details

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Possible causes

(1) Error is detected if waveform is transformed when wiring works of transmission wire of outdoor unit, indoor unit, FRESH MASTER or LOSSNAY are done, or polarity is changed with the power on and transmission data collide each other. (2) Defective transmitting receiving circuit of transmission processor (3) Transmission data is changed by the noise on transmission.

Solution

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