Troubleshooting Procedures

!WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect power and gas to range before servicing, unless testing requires power and/or gas.

Troubleshooting Chart

Problem	Possible Cause	Correction
	Poor ground on burner cap	• Clean burner cap.
Burners will not ignite; no	Weak or failed spark module	• Replace spark module.
Burners will not ignite; no	Low gas pressure	• Verify pressure 4" WCP for natural, 10"
spark at top burner.	Low gas pressure	• Verify pressure 4" WCP for natural, 10"
spark at top burner.	.	WCP for LP.
	Clogged burner port	WCP for LP.
	Clogged burner port	• Clean burner cap.
	No 120 VAC to range	• Verify voltage at wall outlet.
	Micro switch contacts not closing	• Check wiring against appropriate wiring
		diagram. Verify all terminals and
	Faulty wiring. Bad connection at	connections are correct and tight.
Burner will not ignite. No	Faulty wiring. Bad connection at	Check micro switch contacts.
Burner will not ignite. No	burner electrode and electrode socket ..	• Check wiring against appropriate wiring
spark to burner ignitors	burner electrode and electrode socket ..	• Check wiring against appropriate wiring
spark to burner ignitors		diagram. Verify all terminals and
when burner knob is rotated		diagram. Verify all terminals and
when burner knob is rotated	.	connections are correct and tight.
to "LITE" position.	Inoperative spark module	connections are correct and tight.
to "LITE" position.		• Check module according to testing
		• Check module according to testing
	Electrode dirty. Burner cap dirty	procedures information.
	Electrode dirty. Burner cap dirty	• Clean electrode or burner cap.
	Cracked or broken electrode,	• Clean electrode or burner cap.
	Cracked or broken electrode,
	electrode wire or electrode socket	• Replace electrode.

	Check for cracked ignitor/pinched wire..	• Replace ignitor lead or electrode.
	Poor continuity to burner cap	• Clean burner cap and lead.
No spark or only random	Bad ground connection or lack of
No spark or only random	continuity to ground or ignitor	• Tighten ground connection and correct
spark at one ignitor.	continuity to ground or ignitor	• Tighten ground connection and correct
spark at one ignitor.		any breaks in ground path from ignitor
	Cracked or broken ignitor extension	any breaks in ground path from ignitor
	Cracked or broken ignitor extension	path to unit ground path.
	lead	• Replace ignitor lead.

	Shorted valve switch/harness	• Replace switch/harness. If shorting is
Unit continues to spark after		caused by excessive spillovers,
Unit continues to spark after	.	customer education is advised.
knob is turned to OFF	Switch has slipped off the valve	customer education is advised.
knob is turned to OFF		• Carefully reposition switch on valve and
position.		• Carefully reposition switch on valve and
position.		rotate from OFF to high, several times
		rotate from OFF to high, several times
		to verify switch is not broken.
	No voltage to control	• Check for 120 VAC at control. If no
No oven operation in bake or	No voltage from control	voltage check power source.
No oven operation in bake or	No voltage from control	• Check 120 VAC to ignitor, if no voltage,
broil.	Loose wire connection or broken wire ...	replace control.
	Loose wire connection or broken wire ...	• Verify all connections are clean and
		tight, replace broken wire.
No gas flows to burner.	Failed ignitor	• Check ignitor current draw, 3.2 – 3.6
Ignitor glows red.	Gas pressure too high	Amps. Replace ignitor if it fails test.
	Gas pressure too high	• Check for correct gas pressure. Natural
		gas pressure should be 5" WCP and LP
	Failed gas valve	gas pressure should be 10" WCP.
	Failed gas valve	• Check gas valve for continuity.
	Loose wire connection or broken wire ...	• Verify all connections are clean and
		tight, replace broken wire.

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JGS9900BD, JGS8860BD, JGS8850BD, JGS8750BD specifications

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Jenn-Air JGS8850BD, JGS9900BD, JGS8860BD, JGS8750BD manual Troubleshooting Procedures

Models: JGS9900BD JGS8860BD JGS8850BD JGS8750BD