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© 2021 United States Stove Company
17
TROUBLE SHOOTING GUIDE
Control board not sending
power to air switch.
There should be a 5-volt current (approximately) going to the air switch after the
stove has been on for 30 seconds.
Air switch has failed.
To test the air switch, you will need to disconnect the air hose from the body of the
stove. With the other end still attached to the air switch, very gently suck on the loose
end of the hose (you may want to remove the hose entirely off the stove and the air
switch rst and make sure it is clear). If you hear a click, the air switch is working. BE
CAREFUL TOO MUCH VACUUM CAN DAMAGE THE AIR SWITCH.
Display is Flashing “E3”
Possible Causes Possible Remedies: (Unplug stove rst when possible)
The hopper is out of pellets. Rell the hopper.
The air damper is too far open
for a low feed setting.
If on the low setting, you may need to close the damper all the way.
The burnpot holes are blocked. Remove the burnpot and thoroughly clean it.
The air inlet, the interior
chambers, or exhaust system
has a partial blockage.
Follow all cleaning procedures in the maintenance section of the owner's manual.
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 two bolts that hold the auger bracket to the auger tube. The auger
bracket will now be able to be removed from the auger tube. Remove the two bolts on
the side of the auger tube to remove the lower bearing of the auger. Pull the auger out
of the tube to free the jam. Inspect auger before replacing.
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.
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 with
the POF thermodisc bypassed.
The control board is not
sending power to the POF
thermodisc or other auger
system components.
There should be a 5-volt (approximately) current going to the POF thermodisc after
the stove has been on for 10 minutes.
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