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High Limit Switch Keeps Tripping
Possible Causes
The convection blower is overheating and
tripping the internal temperature shutoff.
The stove is being left on the highest setting
for extended periods of time.
Fuel other than wood pellets is being burned
in the stove.
Power surge or brown out situation.
High limit switch is malfunctioning.
Glass "Soot's" Up At A Very Fast Rate
Flame Is Lazy, Dark, And Has Black Tips
After Stove Has Been On For A While, The Burnpot Overfills
Possible Causes
Stove or vent pipe is dirty, which restricts
airflow through the burnpot.
Vent pipe installed improperly.
Burnpot holes are blocked.
Blockage in air intake pipe.
Combustion blower is not spinning fast
enough.
Bad Pellets. (Applies to GLASS "SOOT'S" UP
AT A VERY FAST RATE Only)
© 2021 United States Stove Company
TROUBLESHOOTING GUIDE
Possible Remedies: (Unplug stove first when possible)
Clean any dust off of the windings and fan blades. If oiling
the blower does not help, the blower may be bad.
If operating the heater on the highest heat setting, the room
temperature could increase enough and lead to potential
overheating situations. If this happens, try operating at a
lower heat setting.
This pellet stove is designed and tested to use wood pellets.
Check for signs of fuel other than wood pellets. No other
types of fuel have been approved for this pellet stove. If
there are signs of other types of fuel being used, stop using
them immediately.
A power surge, spike, or voltage drop could cause the high
limit switch to trip. Check to see if a surge protector is being
used on the stove. If not, recommend one to the consumer.
If the other items check out okay, replace the high limit
switch.
Possible Remedies: (Unplug stove first when possible)
Follow all cleaning procedure in the maintenance section of
the owner's manual.
Check to make sure the vent pipe has been installed
according to the criteria in the owner's manual.
Remove the burnpot and thoroughly clean it.
Visually inspect the air intake pipe that leads into the
burnpot for foreign material.
Test the RPM on the blower after the blades have been
cleaned. The RPM should be approximately 3000 RPM.
The brand of pellets or the batch of pellets that are being
used may be of poor quality. If possible, try a different brand
of pellets. You might also want to try a brand that is made
from a different type of wood (softwood vs. hardwood).
Different woods have different characteristics when being
burned.
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