Use and Care Manual
8
Heating Element
Model CS
High-temperature safety shutoff
Motor
Heater with
built-in thermostat
High-temperature safety shutoff
Model CST
High-temperature safety shutoffHigh-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Motor
Motor
Heater with
built-in thermostat
WITH DOUBLE-POLE WALL 
THERMOSTAT ALTERNATE
WITH SINGLE-POLE WALL 
THERMOSTAT ALTERNATE
To/From Heater
To/From Heater
Heating Element
Model CS
High-temperature safety shutoff
Motor
Heater with
built-in thermostat
High-temperature safety shutoff
Model CST
High-temperature safety shutoffHigh-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Motor
Motor
Heater with
built-in thermostat
WITH DOUBLE-POLE WALL 
THERMOSTAT ALTERNATE
WITH SINGLE-POLE WALL 
THERMOSTAT ALTERNATE
To/From Heater
To/From Heater
Heating Element
Model CS
High-temperature safety shutoff
Motor
Heater with
built-in thermostat
High-temperature safety shutoff
Model CST
High-temperature safety shutoffHigh-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Motor
Motor
Heater with
built-in thermostat
WITH DOUBLE-POLE WALL 
THERMOSTAT ALTERNATE
WITH SINGLE-POLE WALL 
THERMOSTAT ALTERNATE
To/From Heater
To/From Heater
Heating Element
Model CS
High-temperature safety shutoff
Motor
Heater with
built-in thermostat
High-temperature safety shutoff
Model CST
High-temperature safety shutoffHigh-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Motor
Motor
Heater with
built-in thermostat
WITH DOUBLE-POLE WALL 
THERMOSTAT ALTERNATE
WITH SINGLE-POLE WALL 
THERMOSTAT ALTERNATE
To/From Heater
To/From Heater
INTERNAL HEATER WIRING DIAGRAMS
 Rev 07/05/18 #730021
   Symptom   Problem   Solution
If you are uncomfortable working with electricity, running electrical supply 
wire or installing a circuit breaker, please consult a licensed electrician.
TROUBLESHOOTING
©2018 Cadet Printed in USA 
Heater 
doesn’t work 
at all.
1. Supply connections are loose.
2. Heater has tripped one of its 
high-temperature safety shutos.
3. Heater has tripped its sec-
ondary high-temperature safety 
shuto.
4. Supply circuit is faulty.
1. Turn o power at main disconnect panel. Inspect and/
or tighten all the wire connectors inside the heater and at 
any connection points inside junction boxes or at the wall 
thermostat. 
2. TO RESET: Turn power o at main disconnect panel. Allow 
20 minutes to cool. Make sure heater is not blocked and is 
clean. Restore power. If the high-temperature safety shuto 
trips more than once a day, replace the heater.
3. Replace heater. 
4. Call a licensed electrician.
Breaker trips 
immediately 
after install-
ing heater.
1. A short circuit exists in the 
electrical supply wires or heater 
wiring.
2. Circuit breaker and heater are 
not the same voltage. 
3. Circuit is overloaded.
4. Supply circuit is faulty.
1. An incorrect connection in the heater or electrical supply 
wires may cause sparking or arcing. Inspect all heater and 
electrical supply wiring insulation for damage or call an 
electrician.
2. Double check the voltage of the heater to make sure it 
matches the voltage of the circuit. Replace heater with a 
model that is 240 volts.
3. Use a lower wattage heater, or reduce the number of 
heaters on the circuit. 
4. Call a licensed electrician.
Heater blows 
cold air or 
doesn’t get 
hot.
1. Element has failed.
2. Only one side heats and the 
other  side has  tripped  one of  its 
high-temperature safety shutos 
(Model CST only).
1. Replace heater.
2. TO RESET: Turn power o at main disconnect panel. Allow 
20 minutes to cool. Make sure heater is not blocked and is 
clean. Restore power. If the high-temperature safety shuto 
trips more than once a day, replace the heater.
Heater 
smells after 
installation 
or not being 
used.
1. Odor from element 
manufacturing process.
2. Dust or lint inside the heater.
3. Supply connections are loose.
1. In a new installation, some smoking may occur as the ele-
ment initially burns o residue from manufacturing. It typically 
goes away within several hours.
2. Clean heater (see “MAINTAINING YOUR HEATER” on 
page 8 for instructions).
3. Turn o power at main disconnect panel. Inspect and/
or tighten all the wire connectors inside the heater and at 
any connection points inside junction boxes or at the wall 
thermostat.
Fan/motor 
doesn’t spin 
or spins 
slow.
1. Circuit breaker is 120 volts and 
heater is 240 volts. 
2. Defective motor or motor out of 
alignment.
1. Double check the voltage of the heater to make sure it 
matches the voltage of the circuit. Replace heater with a 
model that is 120 volts.
2. Replace motor.
Heater 
doesn’t turn 
o.
1. Thermostat is defective.
2. No thermostat hooked up to 
control heater.
3. Incorrect heater wattage for 
room size.
1. Replace thermostat.
2. A thermostat is required for all Com-Pak heaters. Pur-
chase a built-in or wall thermostat for your heater.
3. Install higher wattage model or additional heaters if circuit 
allows.








