Heat & Glo LifeStyle DAKOTA 42H owner manual Troubleshooting, Intellifire Ignition System

11 Troubleshooting

With proper installation, operation and maintenance your gas appliance will provide years of trouble-free service. If you do experience a problem, this troubleshooting guide will assist a qualifi ed service person in the diagnosis of a problem and the corrective action to be taken. This troubleshooting guide can only be used by a qualifi ed service technician.

A. Intellifire Ignition System

	Symptom		Possible Causes	Corrective Actions
1.	The ignitor/module makes	A.	Incorrect wiring.	Verify “S” wire (white) for sensor and “I” wire (orange) for ignitor are connected to the
	noise, but no spark.			correct terminals on the module and the pilot assembly. Reversed wires at the module
				may cause the system to make a sparking noise, but the spark may not be present at
				pilot hood.
		B.	Loose connections or	Verify there are no loose connections or electrical shorts in wiring from module to
			electrical shorts in the	pilot assembly. The rod closest to the pilot hood should be ignitor. Verify connections
			wiring.	underneath pilot assembly are tight; also verify the connections are not grounding out
				to the metal chassis, pilot burner, pilot enclosure, mesh screen if present, or any other
				metal object.
		C.	Ignitor gap is too large.	Verify gap of ignitor to pilot hood. The gap should be approximately .17 in. or 1/8 in.
		D.	Faulty module.	Turn ON/OFF rocker switch or wall switch to OFF position. Remove ignitor wire “I”
				from module. Place ON/OFF rocker switch or wall switch in ON position. Hold ground
				wire about 3/16 in. away from “I” terminal on module. If there is no spark at “I” terminal,
				module must be replaced. If there is a spark at “I” terminal, module is fi ne. Inspect pilot
				assembly for shorted sparker wire or cracked insulator around electrode.
2.	Pilots won’t light, there is	A.	Transformer installed	Verify that transformer is installed and plugged into module. Check voltage of
	no noise or spark.		incorrectly.	transformer under load at space connection on module with ON/OFF switch in ON
				position. Acceptable readings of a good transformer are between 3.2 and 2.8 volts AC.
		B.	A shorted or loose	Remove and reinstall the wiring harness that plugs into module. Verify there is a tight
			connection in wiring	fi t. Verify pilot assembly wiring to module. Remove and verify continuity of each wire in
			confi guration or wiring	wiring harness.
			harness.
		C.	Improper wall switch	Verify wall switch is wired correctly.
			wiring.
		D.	Module not grounded.	Verify black ground wire from module wire harness is grounded to metal chassis of
				appliance.
		E.	Faulty module.	Turn ON/OFF rocker switch or wall switch to OFF position. Remove ignitor wire “I”
				from module. Place ON/OFF rocker switch or wall switch in ON position. Hold ground
				wire about 3/16 in. away from “I” terminal on module. If there is no spark at “I” terminal
				module must be replaced. If there is a spark at “I” terminal, module is fi ne. Inspect pilot
				assembly for shorted sparker wire or cracked insulator around electrode.
3.	Pilot lights but continues	A.	A shorted or loose	Verify all connections to wiring diagram in manual. Verify connections underneath pilot
	to spark, and main burner		connection in sensor rod.	assembly are tight. Verify connections are not grounding out to metal chassis, pilot
	will not ignite. (If the pilot			burner, pilot enclosure or screen if present, or any other metal object.
	continues to spark after	B.	Poor fl ame rectifi cation or	Verify fl ame is engulfi ng sensor rod. If the pilot assembly does not have a ground
	the pilot fl ame has been
			contaminated sensor rod.	strap, consider installing one to increase fl ame rectifi cation. Verify correct pilot orifi ce
	lit, fl ame rectifi cation has
				is installed and inlet gas specifi cations are met. Flame carries rectifi cation current, not
	not occurred.)
				the gas. If fl ame lifts from pilot hood, the circuit is broken. A wrong orifi ce or too high
				an inlet pressure can cause pilot fl ame to lift. The sensor rod may be contaminated.
				Clean sensor rod with emery cloth.
		C.	Module is not grounded.	Verify that module is securely grounded to metal chassis of appliance. Verify that the
				wire harness is fi rmly connected to module.
		D.	Damaged pilot assembly	Verify that ceramic insulator around the sensor rod is not cracked, damaged, or loose.
			or dirty sensor rod.	Verify connection from sensor rod to white sensor wire. Clean sensor rod with emery
				cloth to remove any contaminants that may have accumulated on sensor rod. Verify
				continuity with a multimeter with ohms set at lowest range.
		E.	Faulty module.	Turn ON/OFF rocker switch or wall switch to OFF position. Remove ignitor wire “I”
				from module. Place ON/OFF rocker switch or wall switch in ON position. Hold ground
				wire about 3/16 in. away from “I” terminal on module. If there is no spark at “I”
				terminal, module must be replaced. If there is a spark at “I” terminal, module is fi ne.
				Inspect pilot assembly for shorted sparker wire or cracked insulator around electrode.
4.	Pilot sparks, but pilot will	A.	Correct gas supply.	Verify that incoming gas line ball valve is “open”. Verify that inlet pressure reading is
	not light.			within acceptable limits, inlet pressure must not exceed 14 in. w.c.
		B.	Ignitor gap is too large.	Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in.
		C.	Module is not grounded.	Verify module is securely grounded to metal chassis of appliance.
		D.	Module voltage output/	Replace module.
			valve/pilot solenoid ohms
			readings.

Heat-N-Glo Lifestyle Collection • Dakota 42/Dakota 42H • 4036-905 Rev I • 10/05 21