Error code

Mitsubishi Electric PFD/PQHY code 4109

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Meaning

Abnormal fan (IC): If the auxiliary relay X4 (for detecting fan abnormality) is not excited for a certain period of time, the fan makes an error stop, and the fan output turns to OFF. Set value of overcurrent circuit breaker Model, motor output Set value P250 model3.7kW 7.5A PFD P500 model5.5kW 12A

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Possible causes

(1) Overcurrent circuit breaker (51F) trip (2) A fuse (F1) is blown. (3) Auxiliary relay (X4) failure (4) Broken wire (5) Disconnected wire (6) Indoor controller (I.B1, I.B2) failure

Solution

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