Error code
Mitsubishi Electric PFD code 4109
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Meaning
Fan fault: If the auxiliary relay X4 (for fan fault detection) remains unexcited for a certain period of time, the unit will come to an abnormal stop, and the fan output goes off. Overcurrent breaker trigger value Model name, motor output Preset value P250 model, 3.7kW 7.5A PFD P500 model, 5.5kW 12A
Member details
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View details as a memberPossible causes
(1) Overcurrent breaker (51F) is tripped. (2) Blown fuse (F1) (3) Auxiliary relay (X4) fault (4) Broken wire (5) Loose connector (6) Indoor unit control board (I.B1, I.B2) fault
Solution
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