Question: Rang hood - Weak exhaustion

Cause analysis:

1. Too many doors and Windows open or close when using

2. Host installation height is not within the required range

3. The duct is too long or the air outlet is not tightly sewn

4. The valve blade is stuck and cannot rise and fall normally

5. Fan is not cleaned

6. The common exhaust flue is too narrow or the air outlet is not sealed tightly

How to do:

1. Make appropriate adjustments to the door and window open angle to ensure the smoke exhaust effect

2. Adjust the installation height to the required range

3. Reduce the length or number of bends of the duct

4. Clean the blades to ensure normal rise and fall

5. Clean the fan as required

6. Expand the diameter of the flue, and seal the outlet in place