Troubleshooting
Problem
The fan seems louder than
it should.
The fan is not clearing the
room.
The fan keeps running even
though the house humidity
level is lower than 60% RH.
Possible Cause
The CFM is too great.
The damper is damaged or not working properly.
The bend in the duct is too close to the fan discharge.
The fan discharge is reduced to fit a smaller duct.
The fan body is not attached securely.
There is insufficient airflow intake in the room.
There is insufficient CFM.
Our sensor tolerance is +/-10% RH.
Outdoor humidity is back drafting into the fan.
Built-in 10 minute delay time after humidity level is
lower than 60% RH.
Solution
Be sure the CFM rating on the fan matches the square
footage of your room.
Check the damper to ensure it is opening and closing
properly. If the damper has become damaged, please call
Customer Service.
Be sure you do not have any sharp bends in the duct closer
than 18 in. to the fan discharge.
Use the recommended size ducting to reduce fan noise.
Be sure the fan is securely attached to the ceiling joists.
Be sure a door or window is slightly ajar or opened to allow
airflow. The fan is not able to draw air out of the room without
enough airflow to draw from.
Be sure the CFM rating on the fan matches the requirements
for your room size.
NOTE:
determining if the fan is operating properly. If the fan
clears steam from the room within approximately 15
minutes of completeing your shower, then the fan is
operating properly
Continue to let fan run since it is good to keep venting the
house and the electric bill is minimal (approximately less
than $10 per year).
Turn the fan off when not in use.
12
Using a tissue is not the correct method for
.