Fan sounds
noisy
TROUBLESHOOTING (Continued)
4. Wire connectors inside
housing rattling.
4. Check to make sure wire connectors in
switch housing are not rattling against
each other or against the interior wall of
the switch housing.
Fan wobbles
excessively
6. Fan blades are out of
balance.
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
5. Motor noise caused by solid
state variable speed control.
6. Screws holding blades to
blade holders are loose.
5. Some fan motors are sensitive to
signals from solid-state variable speed
controls. Solid-state controls are not
recommended, choose an alternative
control method.
6. Tighten screws securely.
WARNING
Make sure main power is turned off!
1. Housing support bolts holding
the support bar are loose.
2. Bolt holding the housing
support to the downrod is loose.
3. Screws securing fan blade
holders to motor hub are loose.
4. Blade holders are not seated
properly.
5. Hanger bracket is not rigidly
secured to a structural member
1. Tighten housing support bolts.
2. Tighten bolt holding housing support to the
downrod.
3. Check to be sure screws which attach the
fan blade holders to the motor hub are tight.
4. Check to be sure the fan blade holders
seat firmly and uniformly to the surface of
the motor housing. If holders are seated
incorrectly, loosen the screws and retighten.
5. Check to see that the hanger bracket is
secured to a structural member with the 5 in.
lag bolt. The hanger bracket must be
securely anchored and should not have
any movement.
6. Interchanging an adjacent blade pair
can redistribute the weight and result in a
smoother operation. A heavy blade can
also be identified by turning off the fan
and seeing if one blade on one or both
sides quickly drops to the down position.
Trade out this blade with an adjacent
blade.
20
