United States Stove Company 5040 - Manual (Page 26)

TROUBLESHOOTING GUIDE 24
HIGH LIMIT SWITCH KEEPS TRIPPING
Possible Causes:
Possible Remedies:
1. The convection blower is overheating and tripping the
internal temperature shutoff.
Clean any dust off the windings and fan blades. If oiling the
blower does not help, the blower may be bad
2. The stove is being left on the highest setting for exten-
ded periods of time.
The highest level setting is designated for use over short
periods of time. Burning the stove on the highest setting
for longer that 1-2 hours could lead to potential overheating
situations.
3. Fuel other than wood pellets is being burned in the stove. United States Stove Company pellet stoves are designed
and tested to use wood pellets. Check for signs of fuel oth-
er than wood pellets. No other type of fuel have been ap-
proved for United States Stove Company pellet stoves. If
there are signs of other types of fuel being used, stop using
them immediately.
4. Power surge or brown out situation. 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.
5. High limit switch is malfunctioning. If the other items checked out ok, replace the high limit
switch.
DIGITAL CIRCUIT BOARD TIMING RATES
Heat Level Setting BIG E
1 & 3 1.4 seconds
1 2 seconds
1 & 4 2.5 seconds
2 4 seconds
3 7 seconds
4 9 seconds
5 12 seconds
Total Cycle Time 14.5 seconds
SMOKE SMELL OR SOOT BUILD-UP
Because it is a wood-burning device, your appliance may emit a faint wood-burning odor. If this increases beyond normal or
is you notice an unusual soot buildup on walls or furniture, check your exhaust system carefully for leaks. All joints should be
properly sealed. Also, clean your stove following instructions in “ MAINTENANCE.” If problem persists, contact your dealer.