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-21-
© 2021 United States Stove Company
Display is Flashing “E4”
Possible Causes Possible Remedies: (Unplug stove rst when possible)
The air inlet, burnpot, interior combustion air
chambers, combustion blower, or exhaust
pipe are blocked with ash or foreign material.
Follow all cleaning procedures in the maintenance section
of the owner’s manual.
The Proof of Fire (POF) thermodisc has came
unplugged
Check the (POF) thermodisc to see if the wires are connected
properly.
The Proof of Fire (POF) thermodisc has
malfunctioned.
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 re went out the
auger will continue to feed pellets until the hopper is empty
if you leave the POF thermodisc bypassed.
The hopper is out of Pellets. Rell the hopper.
The hopper safety switch has failed or hopper
is open.
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.
The auger shaft is jammed.
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 ights, 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.
The auger motor has failed.
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.
TROUBLESHOOTING GUIDE
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