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www.comfortzoneproducts.com
Error Code
Possible Cause
Recommended Solution
Clearing Error Codes
E1 (Fan
Blade Not
Spinning)
Overheat
Safety
Cut-Out
(Resettable)
Insufficient Clearance Around
Heater
Ensure Heater is Installed with Sufficient Clearance All-Around, See
Figure 1.
*6 feet minimum mounting from floor
*8 inches minimum from rear of heater
*13 inches minimum from side of heater
To Clear E1 Code:
1. Power Off Heater
2. Switch Off Breaker (or
Remove Fuse)
3. Allow Heater to Cool
(~15 minutes)
4. Switch on Breaker and
wait 1 minute
5. Power On Unit and follow
Instruction Manual for
Normal Operation
If
E1
code persists please
contact manufacturer to
arrange product return.
Obstructed Vent
Remove any objects on heater or adjacent to heater vents. Do not block intake
or exhaust by columns, machinery, etc. Ensure 24 inches minimum distance
from heater exhaust (front) to any object
Fan Not Operational
(Fan Blade Not Spinning)
Disconnect power!
Inspect Fan Blade (Rear of Heater) for foreign or dislodged object(s) preventing
rotation. Remove Rear Grille and clear interference, re-attach Rear Grille.
Disconnect power!
Open Hinged Bottom Cover by removing screws. Inspect Circuit Card
Assembly (adjacent to Supply Connection Terminal Block) for loose or
detached "plug-in" electrical connector. Re-attach securely, close Bottom
Cover and re-install screws.
Inadequate Copper Wire Gauge
for Supply Connections
(Fan Operates at Reduced Speed
Due to Insufficient Power Input)
Consult a licensed electrician.
Ensure Adequate Wire Gauge for Supply Connections
Excessive Distance from Power
Source
(Fan Operates at Reduced Speed
Due to Current Loss)
Inadequate Current (Amp) Rating
on Breaker
Consult a licensed electrician.
Ensure adequately sized Current Breaker or Fuse per National & Local
Electrical Codes.
Improper Heater Shut Down
Do not power off heater using circuit breaker.
Fan motor is designed to operate for a short period of time after heating
element shuts off to prevent an overheat condition.
E2 Room
Temp Sensor
Open Circuit
Detached or Loose Connection at
Room Temperature Sensor
Disconnect power!
* Detach Fan Grille by removing screws. Locate Temp Sensor
Thermocouple on Housing (below Fan Motor Bracket). Ensure wire pair &
thermocouple "tip" are free of damage. Re-attach Grille by re-installing screws.
* Open Bottom Cover by removing screws. Inspect Circuit Card Assembly
(adjacent to Supply Connection Terminal Block) for loose or detached "plug-in"
electrical connector. Re-attach connectors securely. Close Bottom Cover and
re-install screws.
To Clear E2 & E3 Codes:
1. Power Off Heater
2. Switch Off Breaker
(or Remove Fuse)
3. Switch on Breaker and
wait 1 minute
4. Power On Unit and follow
Instruction Manual for
Normal Operation
If
E2
or
E3
code persists
please contact manufacturer to
arrange product return.
E3 Room
Temp Sensor
Short Circuit
Moisture Entrapment in Heater
Not intended for outdoor use. Not intended for use in bathrooms, shower
rooms, laundry facilities or other similar indoor locations.
Disconnect power!
Open Bottom Cover by removing screws. Allow unit to fully dry. Re-attach
securely, close Bottom Cover and re-install screw(s).
Electrical Short-to Ground at
Room Temperature Sensor
Disconnect power!
* Detach Fan Grille by removing screws.
Locate Temp Sensor Thermocouple on Housing (below Fan Motor Bracket).
Ensure wire insulation is not damaged and internal conductor is not exposed.
Re-attach Grille by re-installing screws.
No Power or
Low Power
to Heater
Supply Connections Improperly
Wired
Consult a licensed electrician.
Ensure Supply Connections L1, L2, L3 & Ground are secure. Torque per NEC
(L3 provided on certain models).
Re-Start Unit.
Follow Instruction Manual for
Normal Operation.
Insufficient Service Loop on
Supply Connections
Consult a licensed electrician.
Ensure sufficient service loop in supply wires to maintain secure electrical
connections to swivel heater on bracket (particularly when using rigid or
semi-rigid conduit).
Electrical Short-to Ground
Consult a licensed electrician.
Ensure Supply Connections (L1, L2 & L3) are not contacting Housing (Ground)
(L3 only provided on certain models).
ERROR CODE TROUBLESHOOTING GUIDE:
