INSTALLATION AND OPERATION MANUAL - Wood Pellet Stoves

TROUBLESHOOTING Qualified Technicians Only
Unplug Appliance Before Performing Any Troubleshooting or Maintenance
PROBLEM CAUSE(S) SOLUTIONS
4. Pellets will not The hopper is empty.
Refill hopper.
feed.
The auger motor or circuit board, air Check to be sure that there is no blockage in the pressure tap or
inlet high limit switch or pressure hose. Have your authorized Lennox Hearth Products dealer diag-
switch may be defective. The pressure
switch tap or hose may be blocked.
nose the problem and clean or replace any necessary parts.
Back pressure in venting tripping pres- If new installation check for excessive 90˚ bends, long horizontal
sure switch.
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.
Thermostat is in stand-by mode. Check to see if thermostat is set too low or if sun is shining directly
on thermostat.
Thermostat wires disconnect.
Re-install wires.
High limit switch may have been
tripped.
Allow stove to cool. Increase convection blower setting.
Self-aligning bearings in auger motor
may be misaligned.
Gently tap the auger motor.
Auger is Jammed
Unplug stove. Remove the rear inspection panel (freestanding
model). Hold auger motor gearbox in both hands and rock it back
and forth to release the auger. If this is unsuccessful, then contact
your authorized Lennox Hearth Products dealer.
Auger Motor Setscrew is loose. Tighten setscrew.
Pressure switch is sensing back pres- Remove left side panel (freestanding model) and locate the orange
sure in the vent system and shutting rubber hose that attaches the pressure switch to the exhaust
off the auger motor.
blower. Disconnect the rubber hose from orifice on blower housing.
If the auger starts to feed, the pressure switch is sensing back pressure.
After test, reconnect hose to blower (NEVER operate the appliance
with hose removed). Clean venting system and exhaust flow
passages as outlined in Routine Maintenance section of this manual.
Note: Multiple elbows are more susceptible to collecting ash
resulting in restriction
5. Blowers will not The low limit disc has failed in the Have your authorized Lennox Hearth Products dealer replace the
shut off after the fuel
has been switched
off and the stove has
cooled down.
closed position.
low limit disc.
6. Blowers will not There is no power to the stove. Check that the stove is plugged in to the wall outlet. Ensure that
operate when the
there is power to the outlet (test by plugging in a lamp into same
start button is de-
outlet).
pressed.
There is no power to the control board. Check to see if your circuit breaker has tripped.
Check the wire connections on the high limit disc and control board.
7. One or both blow- Both the room air blower and the ex- Ensure the room air blower is adjusted to a setting at least as high
ers shut off for no haust blower have an over-heat pro- as or higher than the fuel fee setting. If the blower motor continues
apparent reason. tector (high limit disc) built into them. If to shut down, clean blower intake (see Routine Maintenance). If this
the temperature of the blower motor
exceeds the high limit temperature,
then the motor shuts down.
does not correct the problem, replace the blower.
8. Stove will not light. The igniter element may have failed.
There are not enough pellets in the
UltraGrate TM Check igniter element fuse in rear stove compartment. Call your
authorized Lennox Hearth Products dealer. See alternate manual
lighting procedure
.
Prime the feed system (see Starting Your Pellet Stove on page 22).
Improper damper setting.
Adjust damper (see page 23 Damper Operation and page 24
Damper Adjustment Guidelines).
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