Step 3
Unscrew 2 screws.
a. Hold the decorative cover of air duct;
b. Pull air duct out;
Check to see whether fan blade is broken.
Supply DC 12V power to fan to check if there any clash.
Step 3
Shake fan blade to check if fan is loose or not.
Firstly insert the air duct into the slot at the
bottom.
After pushing air duct back into position, you
should hear a clicking sound. If there is no
click, please repeat again.