Heatiator IDV4833IT Troubleshooting, A. Intellifire Ignition System, Symptom, Possible Cause

16 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 technician 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. Con- tact your dealer to arrange a service call by a qualified service technician.

A. Intellifire Ignition System

Symptom	Possible Cause	Corrective Action
1. Pilot won’t light. The	A. Incorrect wiring.	Verify “S” wire (white) for sensor and “I” wire (orange) for ignitor
ignitor/module makes		are connected to correct terminals on module and pilot assembly.
noise, but no spark.
	B. Loose connections or electrical	Verify no loose connections or electrical shorts in wiring from
	shorts in the wiring.	module to pilot assembly. Verify connections underneath pilot
		assembly are tight; also verify connections are not grounding
		out to metal chassis, pilot burner, pilot enclosure, mesh screen if
		present, or any other metal object.
	C. Ignitor gap is too large.	Verify gap of igniter to right side of pilot hood. The gap should be
		approximately .17 inch or 1/8 in. (3 mm).
	D. Module.	Turn ON/OFF rocker switch or wall switch to OFF position.
		Remove ignitor wire “I” from module. Place a grounded wire
		about 3/16 in. (5 mm) away from “I” terminal on module. Place
		ON/OFF rocker switch or wall switch in ON position. 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. Replace pilot if
		necessary.
2. Pilot won’t light, there is no	A. No power or power supply	Verify that power supply is installed and plugged into module.
noise or spark.	installed incorrectly.	Check voltage of power supply under load at spade connection on
		module with ON/OFF switch in ON position. Acceptable readings
		of a good power supply are between 3.2 and 2.8 volts AC.
	B. A shorted or loose connection	Remove and reinstall the wiring harness that plugs into module.
	in wiring configuration or wiring	Verify there is a tight fit. Verify pilot assembly wiring to module.
	harness.	Remove and verify continuity of each wire in wiring harness.
		Replace any damaged components.
	C. Improper wall switch wiring.	Verify that 110/VAC power is “ON” to junction box.
	D. Module not grounded.	Verify black ground wire from module wire harness is grounded to
		metal chassis of appliance.
	E. 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. 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 sparks, but Pilot will	A. Gas supply.	Verify that incoming gas line ball valve is “open”. Verify that inlet
not light.		pressure reading is within acceptable limits.
	B. Ignitor gap is incorrect.	Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in (3
		mm).
	C. Module is not grounded.	Verify module is securely grounded to metal chassis of appliance.
	D. Module voltage output / Valve/	Verify battery voltage is at least 2.7 volts. Replace batteries if
	Pilot solenoid ohms readings.	voltage is below 2.7.

52 Heatilator • ICON DV-IDV Series • 4042-575 • Rev. S • 5/11