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TheAChub
Outdoor Unit Fan Motor Signal Abnormality
Error Code H7
Applicable Models
REYQ-T Method of Error Detection
Detect of abnormal signal from fan motor. Error Decision Conditions
When an abnormal signal is detected at startup of the fan motor operation. Supposed Causes
Abnormal signal from fan motor (Circuit failure) Disconnection/Short circuit in fan motor leads or disconnection of connector
Defective inverter PCB (A3P, A6P) - For Fan motor 2, replace the fan inverter PCB A7P.
Note: ∗1.Procedure for checking for the connector of the fan motor.
- Turn OFF the power supply.
- Disconnect the connector (X2A or X502A) from the PCB, and then make measurement of the following resistance. Acceptance criteria: Resistance between phases falls within the range of ±20%.
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