210575001 Rev. A 1-08
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Troubleshooting Guide
Trouble
Probable Cause
Suggested Remedy
1. Fan does not operate when the switch is on.
1a. A fuse may be blown or a circuit tripped.
1a. Replace fuse or reset circuit breaker.
1b. Connector plug from motor is not plugged in.
1b. Turn off power to unit. Remove Grill and plug motor into receptacle
in housing. Restore power to unit.
1c. Wiring is not connected properly.
1c. Turn off power to unit. Check that all wires are connected.
1d. Motor has stopped operating.
1d. Replace motor.
2. Fan is operating, but air moves slower than normal.
2.
Obstruction in the outer housing.
2.
Check for any obstructions where the fan exhausts to the outside.
3. Fan is operating louder than normal.
3a. Motor is loose.
3a. Turn off power to unit. Remove grill and check that all screws are fully
tightened. Restore power to unit.
3b. Grill is loose
3b. Tighten grill knob.