33
PROBLEM
CAUSE(S)
SOLUTIONS
1.
Fire burns with a lazy orange fl ame. Pellets build up
in the grate and there is excessive glass soot that is diffi -
cult to remove (Ash and soot are a product of combustion
with any wood products, so some build-up on the glass
is normal).
A) There is insuffi cient combustion air.
A
1
) Lack of maintenance (clean UltraGrate™,
clean-out ports, exhaust fl ow passages, venting
system, exhaust blower intake, etc.
•
Remove any clinkers or ash from the bottom of the
UltraGrate that might be obstructing the primary
air holes.
•
Check that the heat exchange tubes are not coated
with ash.
•
Clean internal exhaust ducts.
•
Check gasket seal around the door. Use a thin
strip of paper, 1 in. wide. Open the door and close
it on the paper strip. A slight friction should be
felt when the paper strip is pulled. Repeat this
process at various locations around the door
gasket. Replace the door gasket if necessary.
•
Check for blockage in the air inlet tube or exhaust
pipe. Clean as Necessary.
•
Inspect glass seal to ensure that it is in good
condition and is properly seated to the door.
A
2
) Fuel trim may need to be adjusted down for
faster feeding fuels.
A
3
) Change to a better grade of fuel if necessary.
Check that the damper has been opened enough
for the amount of fuel fed.
A
4
) Have Your Authorized Lennox Hearth Products
dealer check your exhaust blower for proper
operation.
A
5
) The venting system design is too restrictive
(call your authorized Lennox Hearth Products
Technician to evaluate how the installation can be
corrected to satisfy the exhaust fl ow requirements
of the appliance).
2. Fire goes out or stove shuts down automatically
A) Stove has run out of fuel.
B) Pellets are not feeding.
C) The high limit temperature switch has tripped.
D) There is too much combustion air for the amount
of fuel.
A) Refi ll hopper.
B) See (Pellets will not feed) this Page.
C) Allow the appliance to cool for 1 hour, then re-light. If
the stove has been operating at a medium to high burn
rate with the room air blower adjusted to low, there
may not be enough air fl ow to dissipate the heat. On
higher feed rates, adjust the blower speed to a higher
setting. If this problem persists (particularly at lower burn
rates) then the high limit thermal switch may need to be
replaced by your authorized dealer.
D) Adjust the damper to reduce combustion air fl ow.
3. Pellets will not feed.
A) The hopper is empty.
B) The auger motor or control board may be defec-
tive. The pressure switch tap or hose may be
blocked.
C) Back pressure in venting tripping pressure
switch.
D) Thermostat is in stand-by mode.
E) Thermostat wires disconnected.
F) High limit thermal switch may have been
tripped.
G) Door switch not engaged, stopping pellet feed
(Profi le
®
30 FS-2 and Profi le 30 INS-2).
H) Self-aligning bearings in auger motor may be
misaligned.
A). Refi ll hopper.
B).Check to be sure that there is no blockage in the pres-
sure tap or hose. Have your authorized Lennox Hearth
Products dealer diagnose the problem and clean or
replace any necessary parts.
C). If new installation check for excessive 90˚ bends,
long horizontal runs or excessive vertical run of 3” pipe.
Possibly change to 4” pipe. If older installation check for
excessive ash accumulation in pipe or other obstructions.
Clean out pipe.
D). Check to see if thermostat is set to low or if sun is
shining directly on thermostat.
E). Reinstall wires.
F). Allow stove to cool. Increase room air blower setting.
G). Have dealer check operation to determine if adjust-
ment or replacement is necessary.
H). Gently tap the auger motor.
QUALIFIED TECHNICIANS ONLY
Unplug Appliance Before Performing Any Troubleshooting or Maintenance
TROUBLESHOOTING
