Lennox Hearth 32FS operation manual TROUBLESHOOTING Qualified Technicians Only

TROUBLESHOOTING

Qualified Technicians Only

Unplug Appliance Before Performing Any Troubleshooting or Maintenance

PROBLEM	CAUSE(S)	SOLUTIONS
4. Blowers will not operate when the ON/OFF start button	A) There is no power to the stove.	A) Check that the stove is plugged in to the wall
is depressed.		outlet.
	B) There is no power to the control board.	B1) Check if the house circuit breaker has tripped.
	C) The low limit thermal switch has failed in the	B2) Check the wire connections on the high limit
	closed position.	thermal switch and control board.
		C) Have your Lennox Hearth Products dealer
		replace the low limit thermal switch.
5. There is soot or fly-ash in the house.	A) The window is being cleaned when the stove is	A) Turn down the room air blower or turn off stove before
	operating.	cleaning to prevent dispersion of ash and soot into the
		room.
	B) There is leakage at the joints between the	B) Seal up any leaks in the exhaust system with room
	combustion blower, connection or exhaust pipe	temperature vulcanizing high temperature silicone sealer
	connections. This will be evidenced by dust on	(RTV).
	the impeller of the room air blower, and in the
	heat exchanger area.
	C) The vacuum cleaner is leaking.	C) DO NOT use a standard household vacuum or “shop
		vac” as the filters will leak the fine particles of ash. Clean
		the stove with an approved ash vacuum ONLY.
6. Stove will not light.	A) The igniter element may have failed.	A) Check igniter element fuse in rear stove compartment.
		Call your Lennox Hearth Products dealer. See Lighting
		Procedure Without Igniter, Page 20.
	B) There is not enough pellets in the UltraGrate.	B) Prime the feed system (see Pre-lighting Instructions,
		Page 19).
7. Fault	A) The low limit thermal switch is not operating	A) Have your Lennox Hearth Products dealer
	correctly (stuck in open position)	replace the low limit thermal switch.
		B) Refill hopper.
	B) Stove has run out of fuel.	C) Blower intake, exhaust passages and/or venting
		system needs cleaning (follow routine and annual
	C) A disk has tripped / pressure switch.	maintenance procedures).
8. Blowers run continuously	A) Wire harness and/or control board has been dam-	A) Contact your local Lennox Hearth Products
	aged – unplug stove and contact dealer.	dealer.
9. Blinking red lights on control board LED’s.	A) Thermostat circuit in not closed	A1) If a wall thermostat is not installed, a jumper
		is required between the 2 thermostat terminals
		(see Figures 7 and 8 on Page 9). If the jumper is
		missing contact your LHP dealer.
		A2) The wall thermostat (if used) is defective or
		there is a break in the connections or thermostat
		wire.

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