TROUBLESHOOTING

 

QUALIFIED TECHNICIANS ONLY

 

 

 

 

Unplug Appliance Before Performing Any Troubleshooting or Maintenance

 

 

 

 

 

 

 

PROBLEM

CAUSE(S)

SOLUTIONS

 

 

 

 

 

 

 

 

1. Fire burns with a lazy orange ßame. Pellets build up

A) There is insufÞcient combustion air.

A1) Lack of maintenance (clean UltraGrateª,

 

 

in the grate and there is excessive glass soot that is difÞ-

 

clean-out ports, exhaust ßow passages, venting

 

 

cult to remove (Ash and soot are a product of combustion

 

system, exhaust blower intake, etc.

 

 

with any wood products, so some build-up on the glass

 

¥

Remove any clinkers or ash from the bottom of the

 

 

is normal).

 

 

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.

 

 

 

 

 

A2) Fuel trim may need to be adjusted down for

 

 

 

 

 

faster feeding fuels.

 

 

 

 

 

A3) Change to a better grade of fuel if necessary.

 

 

 

 

 

Check that the damper has been opened enough

 

 

 

 

 

for the amount of fuel fed.

 

 

 

 

 

A4) Have Your Authorized Lennox Hearth Products

 

 

 

 

 

dealer check your exhaust blower for proper

 

 

 

 

 

operation.

 

 

 

 

 

A5) 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 ßow requirements

 

 

 

 

 

of the appliance).

 

 

2. Fire goes out or stove shuts down automatically

A) Stove has run out of fuel.

A) ReÞll hopper.

 

 

 

 

B) Pellets are not feeding.

B) See (Pellets will not feed) this Page.

 

 

 

 

 

 

 

 

 

 

C) The high limit temperature switch has tripped.

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 ßow 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

 

 

 

 

D) There is too much combustion air for the amount

replaced by your authorized dealer.

 

 

 

 

D) Adjust the damper to reduce combustion air ßow.

 

 

 

 

of fuel.

 

 

 

 

 

 

 

 

3. Pellets will not feed.

A) The hopper is empty.

A). ReÞll hopper.

 

 

 

 

B) The auger motor or control board may be defec-

B).Check to be sure that there is no blockage in the pres-

 

 

 

 

tive. The pressure switch tap or hose may be

sure tap or hose. Have your authorized Lennox Hearth

 

 

 

 

blocked.

Products dealer diagnose the problem and clean or

 

 

 

 

 

replace any necessary parts.

 

 

 

 

C) Back pressure in venting tripping pressure

C). If new installation check for excessive 90û bends,

 

 

 

 

switch.

long horizontal runs or excessive vertical run of 3Ó pipe.

 

 

 

 

 

Possibly change to 4Ó pipe. If older installation check for

 

 

 

 

 

excessive ash accumulation in pipe or other obstructions.

 

 

 

 

 

Clean out pipe.

 

 

 

 

D) Thermostat is in stand-by mode.

D). Check to see if thermostat is set to low or if sun is

 

 

 

 

 

shining directly on thermostat.

 

 

 

 

E) Thermostat wires disconnected.

E). Reinstall wires.

 

 

 

 

F) High limit thermal switch may have been

F). Allow stove to cool. Increase room air blower setting.

 

 

 

 

tripped.

G). Have dealer check operation to determine if adjust-

 

 

 

 

 

 

 

 

 

G) Door switch not engaged, stopping pellet feed

ment or replacement is necessary.

 

 

 

 

(ProÞle¨ 30 FS-2 and ProÞle 30 INS-2).

H). Gently tap the auger motor.

 

 

 

 

H) Self-aligning bearings in auger motor may be

 

 

 

 

 

 

 

 

 

 

misaligned.

 

 

 

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