Lennox Hearth EN53-VDLE Troubleshooting the Electronic Ignition System, Symptom, Possible causes

Troubleshooting the Electronic Ignition System

Note: Before troubleshooting, be sure that the appliance main line gas shut-off valve, the gas control valve and the wall switch are in the “ON” position.

Important: Valve system troubleshooting should only be accomplished by a qualified service technician.

	Symptom	Possible causes	Corrective action
1.	Nothing happens when	A. Low voltage/or bad lead	Check voltage on AC terminals of module an/or batteries. The value should be
	ON/OFF switch is turned	wires.	around 2.7 to 3.2 VAC. Confirm that wire connections are secure.
	on (pilot does not spark).
		B. Damaged igniter wire.	Check for visible cracked casing, cuts, etc.
		C. Damaged pilot assembly.	Check pilot assembly for visibly broken spark electrode, etc.
		D. Batteries Low	Check voltage on D.C. terminal of batteries. The value should be around 3.0V
2.	The main burner does	A. No fuel supply.	Ensure that the gas supply is turned on.
	not light and the igniter
		B. Loose sensor wire.	Ensure sensor wire connection is secure.
	is sparking.
		C. Lose wires to valve.	Ensure black, green and orange wires connection is secure to valve.
		D. Loose wires to ignition	Ensure black sensor wire (S) and black igniter wire (I) is secure to ignition
		module.	module.
		E. Air in the gas line.	Purge gas line of air.
		F. Low voltage.	Test voltage at AC terminals of module and/or batteries. It should be around
			2.7 to 3.2 VAC.
3.	The main burner come	A. Gas supply is turned	Turned gas supply to "ON".
	"ON" but then go "OFF".	"OFF".
		B. Loose wire connection on	Check wire connection.
		valve or ignition module.
		C. Flame does not engulf	Check location of sensor.
		flame sensor.
		D. Obstructed vent system.	Check vent system for obstructions.
4.	The log and glass soot.	A. Flame impingement on	Check for proper log placement.
		the log.
		B. Improper air shutter	Check for proper air shutter openings.
		opening.

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