Error code
Mitsubishi Electric PUZ code ED
No approved translation for this record yet; showing the original text.
Meaning
Serial communication error 1. Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective. 2. Abnormal if communication between outdoor controller circuit board and M-NET board is not available. Freezing/overheating protection is working Overheating protection <Heating mode> Abnormal if condensing temperature of 63HS detects Tcond. ˚F [:] or more and compressor operation frequency is less than or equal to 25 Hz. Detection is inoperative
Member details
Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.
View details as a memberPossible causes
(1) Breaking of wire or contact failure of connector CN2 between the outdoor controller circuit board and the outdoor power circuit board (2) Breaking of wire or contact failure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board (3) Defective communication circuit of outdoor power circuit board (4) Defective communication circuit of outdoor controller circuit board for outdoor power circuit board (1) Breaking of wire or contact failure of connector between outdoor controller circuit board and M-NET board (2) Contact failure of M-NET board power supply line (3) Noise has entered into M-NET transmission wire. (1) Overcharge of refrigerant (2) Defective refrigerant circuit (clogs) (3) Malfunction of linear expansion valve (4) Defective fan of indoor/outdoor units (5) Short cycle of indoor/outdoor units
Solution
Solution steps are not shared for faults that may be dangerous.
No do-it-yourself solution is given for this fault. For your safety, call an authorised service.
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Address of this page: https://www.remfixit.com/tr/mitsubishi-electric/puz/ed