Heat & Glo LifeStyle CERONA-42, CERONA-36 owner manual Troubleshooting, Intellifire Ignition System

14 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 qualified service person in the diagnosis of a problem and the corrective action to be taken. This troubleshooting guide can only be used by a qualified service technician.

A. Intellifire Ignition System

Symptom	Possible Causes	Corrective Actions
1. The	a. Incorrect wiring.	Verify "S" wire (white) for sensor and "I" wire (orange) for ignitor are
ignitor/module		connected to correct terminals on module and pilot assembly. Reversed wires
makes noise, but no		at the module may cause system to make sparking noise, but spark may not
spark.		be present at pilot hood.
	b. Loose	Verify no loose connections or electrical shorts in wiring from module to pilot
	connections or	assembly. Rod closest to pilot hood should be ignitor. Verify connections
	electrical shorts in	underneath pilot assembly are tight; also verify connections are not grounding
	the wiring.	out to metal chassis, pilot burner, pilot enclosure, mesh screen if present, or
		any other metal object.
	c. Ignitor gap is too	Verify gap of igniter to pilot hood. The gap should be approximately .17 inch
	large.	or 1/8 inch.
	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 inch 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 fine. Inspect pilot assembly for shorted sparker wire
		or cracked insulator around electrode.
2. Pilot won't light,	a. A shorted or	Remove and reinstall the wiring harness that plugs into module. Verify there is
there is no noise or	loose connection in	a tight fit. Verify pilot assembly wiring to module. Remove and verify continuity
spark.	wiring configuration	of each wire in wiring harness.
	or wiring harness.
	b. Improper wall	Verify that 110/VAC power is "ON" to junction box.
	switch wiring.
	c. Module not	Verify black ground wire from module wire harness is grounded to metal
	grounded.	chassis of appliance.
	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 inch 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 fine. Inspect pilot assembly for shorted sparker wire
		or cracked insulator around electrode.
3. Pilot lights but	a. A shorted or	Verify all connections to wiring diagram in manual. Verify connections
continues to spark,	loose connection in	underneath pilot assembly are tight. Verify connections are not grounding out
and main burner will	sensor rod.	to metal chassis, pilot burner, pilot enclosure or screen if present, or any other
not ignite. (If the		metal object.
pilot continues to	b. Poor flame	Verify that flame is engulfing sensor rod. If the pilot assembly does not have a
spark after the pilot	rectification or	ground strap, consider installing one to increase flame rectification. Verify
flame has been lit,
	contaminated	correct pilot orifice is installed and inlet gas specifications. Flame carries
flame rectification
	sensor rod.	rectification current, not the gas. If flame lifts from pilot hood, the circuit is
has not occurred.)
		broken. A wrong orifice or too high an inlet pressure can cause pilot flame to
		lift. The sensor rod may be contaminated. Clean sensor rod with emery cloth.
	c. Module is not	Verify that module is securely grounded to metal chassis of appliance. Verify
	grounded.	that wire harness is firmly connected to module.

46 Heat & Glo • Cerona-36, Cerona-42 • 2106-900 Rev. A • 6/06