Installation Guide
Symptom Problem Solution
MAINTAINING YOUR HEATER
Troubleshooting Chart
 WARNING! Before removing grill, turn the electrical power off at the main disconnect 
panel (circuit breaker or fuse box). Lock or tag the main disconnect panel door to prevent 
someone from accidentally turning the power on while you are working on the heater. 
Failure to do so could result in serious electrical shock, burns, or possible death.
 WARNING:  Any other service not detailed in this Owner’s Guide should be performed by an 
authorized service representative.
Maintenance As Needed, or every six months minimum.
*CONSULT LOCAL ELECTRICAL CODES TO DETERMINE WHAT WORK MUST BE PERFORMED BY QUALIFIED 
ELECTRICAL SERVICE PERSONNEL
Breaker trips 
immediately upon 
energizing heater.
1. Incorrect supply voltage.*
2. Overloaded circuit.*
3. A short circuit exists in the 
supply or heater wiring.*
4. Defective circuit breaker.*
1. Verify that supply voltage matches the heater rating.
2. The total amperage of all heaters on a branch circuit must not be more than 80% of 
the amperage rating of the circuit breaker and supply wire ratings. Use a lower wattage 
heater, or reduce the number of heaters on the circuit.
3. Shorted supply or heater wires may be accompanied by severe sparking. Inspect all 
supply and heater wiring insulation for damage. Do not reset the circuit breaker until all 
electrical shorts have been repaired.
4. Replace the circuit breaker.
Heater fan 
operates, 
but does not 
discharge warm 
air.
1. Insufcient element tempera-
ture.
2. Incorrect supply voltage.*
3. Element has failed.*
1. Allow a few moments for element to reach operating temperature.
2. Verify that supply voltage matches the heater rating.
3. Replace element.
Heater will not 
shut off.
1. Heat loss from room is great-
er than heater capacity.*
2. Defective thermostat.
3. Thermostat wired incorrectly 
to heater.*
1. Close doors and windows. Provide additional insulation or install a higher-wattage heat-
er or multiple heaters if necessary (if your circuit is rated for more capacity).
2. Adjust thermostat to its lowest setting. If heater continues to run (allow two minutes for 
the thermostat to respond), and room temperature is greater than 50 degrees; replace 
thermostat.
3. Refer to thermostat documentation and correct wiring.
Heater discharges 
smoke or emits a 
burnt odor.
1. Dust, lint or other matter has 
accumulated inside heater.
2. Poor or loose electrical con-
nections.
1. Clean heater (see “MAINTAINING YOUR HEATER” section above for instructions).
2. Turn off power at main disconnect panel. Inspect all supply and heater wire connections 
to make sure nothing is loose or poorly connected. Secure or reconnect all loose connec-
tions. Do not reset circuit breaker until all connections have been checked and repaired.
Element heats for 
a moment without 
the fan turning, 
then immediately 
stops heating.
1. Defective motor or internal 
connection.*
2. Fan or motor jammed.
1. Heater or fan motor requires replacement.
2. Remove obstruction, and press heater manual reset button (see “OPERATING IN-
STRUCTIONS” section).
Heater does not 
run.
1. Thermostat set too low.
2. Heater has tripped the 
manual reset temperature limit 
control.
3. Power not on at the circuit 
breaker.
4. Broken or poorly connected 
wire(s) to heater.
5. Defective thermostat. 
1. Adjust thermostat to a higher temperature until heater operates (see Problem #5 if the 
problem persists).
2. Press the manual reset button (see “OPERATING INSTRUCTIONS” section).
3. Turn on the correct circuit breaker in the main disconnect panel.
4. Turn off power at main disconnect panel. Check supply wire continuity and proper 
connection to heater wires.
5. The entire heater, or any of its components may be checked for continuity to determine 
the cause of any problem. Repair or replace the heater or thermostat.
Heater continually 
trips the manual 
reset temperature 
limit control.
1. Dust, lint or other matter has 
accumulated inside heater.
2. Airow is blocked.
3. Fan or motor is jammed.
4. None of the above.
1. Clean heater (see “MAINTAINING YOUR HEATER” section for instructions.)
2. Remove obstruction. Maintain a minimum distance of 6 inches from adjacent surfaces, 
4½ inches from the oor, and 3 feet for furniture or other objects placed directly in front of 
the heater.
3. Remove obstruction, and press heater manual reset button (see “OPERATING IN-
STRUCTIONS” section).
4. Replace heater assembly.
1. It is important that you verify power has been turned off and 
the heating element is cool before proceeding. Circuit breakers 
are often not marked correctly and turning the wrong breaker off 
could mean electricity is owing to the heater, even if the heater 
does not appear to be working. If you are uncomfortable working 
with electrical appliances, unable to follow these guidelines, or do 
not have the necessary equipment, consult a qualied electrician.
2. Once you verify the power has been turned off correctly, pro-
ceed to the next step.
3. Remove screws and take off grill.
4. Wash grill with hot soapy water and dry.
5. While holding blower wheel (to avoid damage or bending), use 
a hair dryer or vacuum on blow cycle to blow debris through the 
element (do not touch element).
6. Vacuum blower area without touching the element.
7. Do not lubricate motor.
8. Replace grill and secure with screws.
9. Turn thermostat to desired setting.
10. Turn power back on at the main disconnect panel.
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