Error code
Mitsubishi Electric PSA code P9
No approved translation for this record yet; showing the original text.
Meaning
Pipe temperature thermistor / Condenser-Evaporator (TH5) The unit is in 3-minute resume protec1 tion mode if short/open of thermistor is detected. Abnormal if the unit does not get back to normal within 3 minutes. (The unit returns to normal operation, if it has been reset normally.) Constantly detected during cooling, 2 drying, and heating operation (except defrosting) Short: 90: or more Open: -40: or less
Member details
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View details as a memberPossible causes
(1) Defective thermistor characteristics (2) Contact failure of connector (CN44) on the indoor controller board (Insert failure) (3) Breaking of wire or contact failure of thermistor wiring (4) Temperature of thermistor is 90: or more or -40: or less caused by defective refrigerant circuit. (5) Defective indoor controller board
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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