Ordinary kitchen exhaust fans do not rotate

It's better to buy one, that is, dozens of dollars, it's not so easy to repair, first clean it with lye, and then try to see if it can work, if not, you still have to replace the motor, and the price is about the same as buying a new one. If it works, just.

To be on the safe side, buy a new one. It is recommended to buy a Lion strong brand kitchen exhaust fan, the motor is fully enclosed bearing, will not enter the oil, and the service life is particularly long.

Answer: You first use the multimeter R*1 file to measure the red, blue, black, three wires, first find out the common end, the three wires are interconnected, if one is not through, it means that there is a phase winding burned out, then only to change the winding, or change the motor.

Generally, this situation is caused by too much oil stain on the motor, check: turn the fan blade by hand, if it is tight, the solution: open the cover shell and clean it with alcohol, dry it with a hair dryer, and the general problem will be solved.

Causes of abnormal operation of the exhaust fan motor:

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

Because the switch of the piano key loses its elasticity, it causes the phenomenon of poor contact of the piano key in the process of operation, and the switch of the piano key must be replaced at this time, and the exhaust fan can operate normally.

2. The power cord of the motor is in poor contact.

At this time, you only need to re-weld the power cord of the motor, and you can troubleshoot it with confidence.

3. The connection of the motor starting capacitor is poor.

Check the wiring of the starter capacitor, at this time, you only need to re-solder the starter capacitor, and connect or replace the wiring of the starter capacitor.

4. Test whether the voltage is normal.

There is also a more serious problem that after the start button of the motor is pressed, the green light-emitting tube does not light up. Use a universal meter to measure whether the 12V power supply voltage is normal, if there is no 12V voltage voltage, and then check whether the low-voltage rectifier filter circuit and the relevant components are damaged, if there is a component damage, it should be worse damage to the component, and then check whether the 220V AC power supply is connected, and whether the automatic transmission of the key switch is damaged or has poor contact. If none of the above tests are abnormal, the green light indicator tube should be removed, the green light indicator tube should be inspected, and if it is damaged, the green light indicator tube should be worse.

5. Other reasons.

If the fault can not be eliminated after the above inspection, it means that the other circuit parts of the automatic control circuit are faulty, and the electric control circuit should be checked, and the fault can be eliminated if the faulty component or device is worse.