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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. Clean.
5. Reverse red and black power leads.
1. Improper voltage.
2. Outlet louvers closed.
3. Intakes obstructed.
4. Dirty blower wheels.
5. Motor rotating in reverse direction.
Insufficient 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)
1. Replace with 4K4204H or 4K9204H.
2. Replace with proper Ga. and watts.
3. Replace with proper item.
1. Fuse link open.
2. Heater element broken
3. Control Transformer
No heat
* 120-220 volt models only.
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