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Time：2022-04-06Views：0
1. Motor bearing damage
Turning the fan blades by hand will feel more laborious, which is basically caused by the damage of the bearing of the motor. In this case, generally replace the bearing of the motor.
2. Start capacitor failure
It is difficult for the motor to start, and it cannot be started. Sometimes the motor starts to run after being powered on for a while, which is generally caused by the damage of the capacitor.
Use a multimeter to measure the capacity of the capacitor, and check whether it is consistent with the label of the capacitor. If the inconsistency is too large, the capacitor needs to be replaced. According to the label of the capacitor, buy a capacitor of the same type and replace it.
3. Motor problem
After the power is turned on, the motor does not respond, first use a multimeter to measure the voltage connected to the motor, the voltage is normal, and then test the capacitor, the capacitor is also normal, which proves that the motor is damaged. In this case only the motor can be replaced.
4. Line problems
After the power is turned on, the motor does not respond.
First use a multimeter to measure the voltage connected to the motor. If the voltage is too low, it proves to be a line problem. Therefore, it is necessary to check whether the wire is damaged, whether the position of the connector is off, whether the plug, socket and switch are damaged, etc.
The capacitance of the capacitor becomes smaller. If the power does not turn, the fan blade will start to turn. In this case, because the electric fan has been used for a long time, the capacitance of the capacitor will decrease, resulting in a smaller starting torque of the motor and unable to drive the load.
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