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Display is Flashing "E4"
Possible Causes
The air inlet, burnpot, interior combustion air
chambers, combustion blower, or exhaust pipe
are blocked with ash or foreign material.
The Proof of Fire (POF) thermodisc has came
unpluged
The Proof of Fire (POF) thermodisc has
malfunctioned.
The hopper is out of Pellets.
The hopper safety switch has failed or hopper
is open.
The auger shaft is jammed.
The auger motor has failed.
Display is Flashing "E5"
Possible Causes
The stove automaticaly flashes "E5" when
turned on
CONVECTION BLOWER SHUTS OFF AND COMES BACK ON
Possible Causes
The convection blower is overheating and
tripping the internal temperature shutoff.
Circuit board malfunction.
© 2021 United States Stove Company
TROUBLE SHOOTING GUIDE
Possible Remedies: (Unplug stove first when possible)
Follow all cleaning procedures in the maintenance section of the
owner's manual.
Check the (POF) thermodisc to see if the wires are connected properly.
Temporarily bypass the POF thermodisc by disconnecting the two
wires and connecting them with a short piece of wire. Then plug the
stove back up. If the stove comes on and works, you need to replace
the POF thermodisc. This is for testing only. DO NOT LEAVE THE
THERMODISC BYPASSED. Your blowers will never shut off and if the
fire went out the auger will continue to feed pellets until the hopper is
empty if you leave the POF thermodisc bypassed.
Refill the hopper.
When operating the unit, be sure the hopper lid is closed so that the
hopper safety switch will activate. Check the wires leading from the
hopper safety switch to the control panel and auger motor for secure
connections. Use a continuity tester to test the hopper safety switch;
replace if necessary.
Start by emptying the hopper. Then remove the auger motor by
removing the auger pin. Remove the auger shaft inspection plate in
the hopper so that you can see the auger shaft. Gently lift the auger
shaft straight up so that the end of the auger shaft comes up out of
the bottom auger bushing. Next, remove the two nuts that hold the
top auger biscuit in. Then rotate the bottom end of the auger shaft up
towards you until you can lift the shaft out of the stove. After you have
removed the shaft, inspect it for bent flights, burrs, or broken welds.
Remove any foreign material that might have caused the jam. Also,
check the auger tube for signs of damage such as burrs, rough spots,
or grooves cut into the metal that could have caused a jam.
Remove the auger motor from the auger shaft and try to run the unit. If
the motor will turn the shaft is jammed on something. If the motor will
not turn, the motor is bad.
Possible Remedies: (Unplug stove first when possible)
The T-stat sensor has come unpluged form the control board. Check
to see if the sensor is unpluged. If the sensor is not unpluged then the
sensor is damaged or has a short. If the sensor is damaged or has a
short it will need to be replaced.
Possible Remedies: (Unplug stove first when possible)
Clean any dust off of the windings and fan blades. If cleaning the
blower does not help, the blower may be bad.
Test the current going to the convection blower. If there is power being
sent to the blower when it is shut off, then the control board is fine. If
there is NOT power being sent to the blower when it shuts off during
operation, then you have a bad control board.
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