Causes that the exhaust fan motor is not working properly

Update:06-09-2018
Summary:

Causes that the exhaust fan motor is not working proper […]

Causes that the exhaust fan motor is not working properly:

1. The switch spring of the key loses its elasticity.

Since the switch of the key loses its elasticity, Automatic Motor it causes a bad contact during the operation of the key. At this time, the switch of the key must be replaced, and the exhaust fan can operate normally.

2. The motor's power cord is not in good contact.

At this time, you only need to re-solder the power cord of the motor, you can safely troubleshoot.

3, motor starting capacitor connection bad contact

Check the connection of the starting capacitor. At this time, only need to re-weld to start the capacitor, and connect or replace the connection of the starting capacitor.

4. Is the test voltage normal?

Another serious problem is that the green LED does not illuminate after the start button of the motor is pressed. Use a versatile meter to measure whether the 12V power supply voltage is normal. If there is no 12V voltage and voltage, and check the low-voltage rectification filter circuit and related originals, if there is any component damage, it should be worse damaged components, and then check the 220V AC power supply. Whether it is connected or not, the key switch is blocked or damaged. If there is no abnormality in the above checks, the green light indicating tube should be removed and the green light indicating tube should be inspected. If it is damaged, the green light indicating tube should be worse.