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Troubleshooting Chart
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Fan inoperative 1. Blown fuse or open circuit breaker.
2. Electricity turned off.
3. Loose cord connection.
4. Defective capacitor or motor.
1. Replace fuse or reset circuit breaker.
2. Contact local power company.
3. Re-check all connections.
4. Replace.
1. Center wheel.
2. Tighten mounting bolts.
3. Replace motor.
1. Wheel rubbing on housing.
2. Motor base or blower not securely
anchored.
3. Defective motor bearings.
Excessive noise
1. Reconnect to proper voltage.
2. Open.
3. Remove any obstruction.
4. Position toggle switch to high.*
5. Clean.
1. Improper voltage.
2. Outlet louvers closed.
3. Intakes obstructed.
4. Motor speed setting on low.
5. Dirty blower wheels
Insufficient air flow
1. Position toggle switch to low.*1. Motor speed setting on high.Too much air flow
1. Verify correct wire size.
2. Remove obstruction.
1. Low voltage.
2. Obstruction to blower wheel.
Fans cut out on
thermal overload
(self-resets)
* 120-220 volt models only.
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