Qmark High Velocity Electric Heated - Manual (Page 7)

TROUBLE SHOOTING CHART
Symptom Possible Cause Corrective Action
Fan inoperative 1. Blown fuse or open circuit breaker. 1. Replace fuse or reset circuit breaker
2. Electricity turned off. 2. Contact local power company.
3. Loose motor cord connection. 3. Re-check all connections.
4. Thermostat off/defective 4. Call for fan/Replace.
5. Defective fan relay/contactor. 5. Replace.
6. Defective fan relay/contactor. 6. Replace.
7. Defective capacitor (1 phase unit only) 7. Replace.
8. Defective motor. 8. Replace.
9. Wrong wiring. 9. Correct wiring.
Excessive noise 1. Wheel rubbing on housing. 1. Center wheel.
2. Motor base/blower loose. 2. Tighten mounting bolts.
3. Defective motor bearings. 3. Replace motor.
Insufficient air flow 1. Improper voltage. 1. Reconnect proper voltage/or change unit
exchange unit with proper voltage rating.
2. Outlet louvers closed. 2. Open louvers
3. Intakes obstructed. 3. Remove any obstruction.
4. Dirty blower wheels. 4. Clean.
5. Motor in reverse rotation. 5. Interchange red & black power leads.
Fan cuts out on thermal 1. Low voltage. 1. Check voltage/Use correct wire size.
overload (self-resets) 2. Obstruction to blower wheel. 2. Remove obstruction.
No heat 1. Fuse link open. 1. Replace w/ G5AM0400117C
2. Heater element broken. 2. Replace w/ proper Ga and watts.
3. Control transformer open 3. Check wiring /Reset control breaker
4. Auto reset functioned* 4. Wait to reset/check for insufficient airflow.
*Heat indicator light On (Main Panel)
BUT heat indicator light OFF (Cabinet)
4a. Auto reset functioned possibly due
4a. Remove cause of overheat/wait to reset.
to overheating.
4b. Air flow switch not closing its 4b. Check hose/switch/wiring & check for
normally open contact. insufficient air flow.
5. Heat Indicator light OFF (Main Panel) 5. Adjust/check thermostat.
thermostat not calling for heat.