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September 1, 2008
7034-106E
Page 29
Mt. Vernon Pellet Stove (AE)
9
Troubleshooting
With proper installation, operation, and maintenance your appliance will provide years of
trouble-free service. If you do experience a problem, this troubleshooting guide will assist
a qualified service person in the diagnosis of a problem and the corrective action to be
taken. This troubleshooting guide can only be used by a qualified service technician.
Error Message
Possible Cause Corrective Action
Bad wall control or control board
3 wires have loose connections or installed
wrong
Replace wall control or control board
Check connections
LOW BATTERY Battery supply on battery backup is drained Recharge battery
BAD TC DROP TUBE
(TC = Thermocouple)
Drop tube thermocouple is broken or leads are
reversed
Check connections
Replace thermocouple
BAD TC FIREPOT
(TC = Thermocouple)
Firepot thermocouple is broken or leads are
reversed
Check connections
Replace thermocouple
SNAP DISC TRIPPED Overheat sensor (snap disc) has tripped Unplug the appliance and then manually
reset snap disc
VACUUM SW ERROR
(SW = Switch)
Vacuum switch is bad
Vacuum hose is plugged/disconnected
Check connections. Bypass vacuum
with jumper wire, if runs, switch is bad.
Replace switch
Check vacuum hose
COMB BLOWER JAMMED Combustion blower is blocked/jammed Remove blockage
Replace blower if necessary
Must uplug the appliance to clear the
error
AUGER JAMMED Auger jammed, feed motor bad Pull the feed system and inspect
Clear jam. Press Retry
MISSED IGNITION Igniter bad or poor harness connection
Out of fuel or fuel is bridging in hopper
Faulty firepot thermocouple connection has
shorted.
Check connections, if OK replace igniter
Break up bridging pellets
Refill hopper
Replace the thermocouple and then
press Retry
MIN FIREPOT TEMP Out of fuel Refill hopper
Add handful of pellets to firepot
Press Retry
MAX DROP TUBE TEMP Wrong fuel table setting
Flame height set too high
Confim setting matches burning fuel
Adjust flame height
CONV BLOWER JAMMED Convection blower blocked/jammed Remove blockage
Replace blower if necessary
Must uplug the appliance to clear the
error
CHECK ASHPAN Auto-clean jammed
Auto-clean switch is bad
Linkage has become disconnected
If ashpan is empty, check for a jam. Use
a screw driver and firmly push in the
firepot floor holes and flex spring and
push toward home to release jam.
Replace switch
Reconnect linkage
Hopper lid open while you refill the hopper
Switch is out of adjustment (auger will not
function)
Fill hopper between cycle
Adjust or replace switch
SCREEN GOES BLANK Static discharge or nearby lightening or
Electric fast transients at the input mains
Unplug the power to the appliance and
plug it back in