Error code
Mitsubishi Electric PUY code U1
No approved translation for this record yet; showing the original text.
Meaning
w 4.15 MPa [602PSIG] w 63H: High-pressure switch
Member details
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View details as a memberPossible causes
1 (2) Clogged filter of indoor unit (3) Decreased airflow caused by dirt of indoor fan (4) Dirt of indoor heat exchanger (5) Locked indoor fan motor (6) Malfunction of indoor fan motor (7) Defective operation of stop valve (Not full open) (8) Clogged or broken pipe (9) Locked outdoor fan motor (0) Malfunction of outdoor fan motor (1) Short cycle of outdoor unit (2) Dirt of outdoor heat exchanger (3) Decreased airflow caused by defective inspection of outside temperature thermistor (It detects lower temperature than actual temperature.) (4) Disconnection or contact failure of connector (63H) on outdoor controller board (5) Disconnection or contact failure of 63H connection (6) Defective outdoor controller board (7) Defective action of linear expansion valve (8) Malfunction of fan driving circuit
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/puy/u1