United States Stove Company 5040 - Manual (Page 22)

TROUBLESHOOTING GUIDE 20
STOVE SHUTS OFF AND THE #3 LIGHT FLASHES
Possible Causes:
Possible Remedies: (Unplug stove first when possible)
1. The hopper is out of pellets. Refill the hopper
2. The air damper is too far open for a low feed
setting.
If burning on the low setting, you may need to close the
damper all the way (push the knob in so it touches the side
of the stove).
3. The burnpot is not pushed completely to the
rear of the firebox.
Make sure that the air intake collar on the burnpot is touching
the rear wall of the firebox.
4. The burnpot holes are blocked. Remove the burnpot and thoroughly clean it.
5. 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.
6. The hopper safety switch has failed or hopper
s 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.
7. The auger is jammed. Start emptying the hopper. Then remove the auger motor by
removing the auger pin. Remove 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.
8. 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 some-
thing. If the motor will not turn, the motor is bad.
9. The Proof of Fire (POF) thermodisc has
malfunctioned.
Temporarily bypass the POF thermodisc by disconnecting
the two brown wires and connecting them with a short piece
of wire. Then plug the stove back in. If the stove comes on
and works, you need to replace the POF thermodisc. This is
for testing only. DO NOT LEAVE THE THERMODISC BY-
PASSED. 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.
10. The high limit thermodisc has tripped or is
defective
Wait for the stove to cool for about 30-45 minutes. It should
now function normally. If not, use the owner’s manual to lo-
cate the high limit thermodisc. To test if the thermodisc is bad,
you can bypass it as described previously for the POF ther-
modisc.
11. The fuse on the control board has blown. Remove the control board. On the back, there is one fuse. If it
appears to be bad, replace it with a 5 Amp 125 Volt fuse. Plug
the stove back in and try to run the unit.
12. 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.