Specifications
29
Troubleshooting
3. E3 on LED Display (Proof of Fire Failure)
• If a fire is not detected, or if the fire has gone out the display will read E3 because the exhaust temperature is
too low causing Exhaust Temperature Sensor’s contacts to open.
• Check the hopper for fuel. Auger may need to be primed if stove has run out of pellet or being fired for the
first time.
• Incorrect air damper setting. - Excessive air may consume the fire too quickly before the next drop of fuel,
leaving completely unburned fuel in the burn pot liner. - Insufficient air will cause build up, further restricting
the air flow through the Burn Pot Liner. This in turn will cause the fuel to burn cold and very slowly. Fuel may
build up and smother the fire. In this case clean the burn pot. (NOTE: unit may require a changes to the
vent system or installation of fresh air intake to correct Air to Fuel ratio problems).
• Combustion Blower failure. - The Combustion Blower is not turning fast enough to generate the proper vacuum
in the fire box. Visual Check – is the blower motor turning.
• Check the Exhaust Blower voltage across the blower wires (>=114V on #5 setting and >= 82V on #1 setting).
– Replace the Circuit Board if the Voltage reading is less than 82 V. with a line voltage >114 V AC.
• Check Vacuum levels in the exhaust channel by bypassing the Vacuum Switch, then remove the Vacuum hose
from Vacuum Switch. Check exhaust vacuum readings by placing the open end of the Vacuum Hose on a
Magnehelic Gauge (readings must be above .10” WC on low fire).
• Poor Quality Fuel – Insufficient energy in the fuel to produce enough heat to keep the stove burning or
operational.
• Exhaust Temperature Sensor failure. – Bypass the sensor located on Exhaust Blower, if stove now operates
properly, the unit may require cleaning or a new sensor. Contact your local dealer for service.
• Check the fuse on the circuit board.
4. E4 on LED Display (High Limit or Lid Switch Failure)
• If unit has been running normally and you now have an E4 this could be a High Limit switch. This is a safety
feature, if the hopper gets to hot the unit will shut off. The High limit switch is located the right side of the
hopper near the bottom.
• If the high limit has tripped something is wrong with the unit, possibly a component failure or a hopper fire has
occurred.
• Slowly open the hopper lid, if you see and smoke at all keep it closed. A fire extinguisher or water can be used
to put out a fire.
• If there is no smoke the Hopper Lid switch may not be engaged or there has been a component failure. The
components will need to be tested, contact an Enviro dealer. The High limit switch is a manual reset switch and
a small red button on the back of the switch will need to be manually pressed in order for the unit be started
again.
• To check Hopper Lid switch make sure Hopper Lid is fully closed, If you think it is properly closed open and
close the lid, you should hear an audible click form magnetic Hopper Lid switch located in control board area.
• If no click is heard check that magnet on underside of Hopper Lid is still magnetic. This is a strong magnet.
• If magnet is good, alignment is out or switch is bad.
• Test switch for audible click with another magnet, switch is right above LED Display on control board.
5. The Combustion Blower will not function normally.
• If the Combustion “Exhaust” Blower is not functioning properly the stove will most likely will give an E2 or E3
error code.
• Check the wiring against the wiring diagram to make sure everything is connected properly.
• The fan can be directly hooked up to power to check motor.
NOTE: DO NOT attempt any electrical troubleshooting without knowledge of electrical systems,
make sure unit is not plugged in. It is recommended to call an authorized Enviro dealer or service
technician.