The axial flow fan of the range hood is noisy. You can try the following solutions:
1. Clean the fan: Accumulated oil may cause the fan to run unevenly and produce noise. Clean the fan regularly.
2. Check the installation: Make sure the fan is firmly installed and not loose.
3. Fan impeller balance: If the impeller is unbalanced, it may cause vibration and noise. Contact a professional for balance correction.
4. Fastening parts: Check all connecting parts to ensure that they are not loose.
5. Replace bearings: Worn bearings may produce noise and need to be replaced in time.
6. Use shock-absorbing pads: Use shock-absorbing pads at the installation site of the fan to reduce vibration transmission.
7. Repair the air duct: Make sure the air duct is smooth and not blocked or deformed.
8. Reduce the wind speed: Too high a wind speed may cause increased noise, so the wind speed can be reduced appropriately.
9. Replace the fan: If the above method does not work, you may need to replace the fan.
If the problem persists, it is recommended to contact professional maintenance personnel for inspection and repair.