1. Power cord failure: The power coil of the range hood may fail, so it is necessary to check whether the power cord is connected normally and whether there is poor contact.

2. The range hood switch is damaged: after the range hood switch is damaged, it is impossible to supply power to the range hood, and the switch needs to be replaced.

3. Motor damage: Motor damage may cause the range hood to fail to work normally, and the motor needs to be repaired or replaced.

4. Fuse failure: The fuse failure of the range hood may also cause the range hood to fail to be electrified, and the fuse needs to be replaced.

5. Power failure or insufficient power: Power failure or insufficient power may also cause the range hood to fail to power on. Need to check whether the distribution box is normal and whether the power provided is sufficient.

In short, when the range hood fails to power on, it needs to be thoroughly checked to find out the problem and then handled in time. If you can't solve it yourself, you'd better contact professionals or after-sales service to ensure that the range hood can work normally.