Desa TC36N, TC36P installation manual Troubleshooting, Observed Problem Possible Cause Remedy

Troubleshooting

WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.

CAUTION: Never use a wire, needle or similar object to clean pilot. This can damage pilot unit.

Note: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY
When ignitor button is pressed,	1. Ignitor electrode not con-		1.	Reconnect ignitor cable
there is no spark at pilot	2.	nected to ignitor cable	2.	Free ignitor cable if pinched
		Ignitor cable pinched or wet
				by any metal or tubing. Keep
	3.	Piezo ignitor nut is loose	3.	ignitor cable dry
				Tighten nut holding piezo
				ignitor. Nut is located behind
	4.	Broken ignitor cable	4.	the mounting bracket
				Replace ignitor cable
	5.	Bad piezo ignitor	5.	Replace piezo ignitor
	6.	Ignitor electrode broken	6.	Replace pilot assembly
	7.	Ignitor electrode positioned	7.	Tighten electrode. Replace if
		wrong		necessary
When ignitor button is pressed,	1. Gas supply turned off or equip-		1.	Turn on gas supply or open
there is spark at pilot but no		ment shutoff valve closed	2.	equipment shutoff valve
ignition	2. Gas control knob not in PI-			Turn gas control knob to PILOT
	3.	LOT position	3.	position
		Gas control knob not pressed		Press in gas control knob while
	4.	in while in PILOT position	4.	in PILOT position
		Air in gas lines when in-		Continue holding down con-
		stalled		trol knob. Repeat igniting
	5. Depleted gas supply (propane/			operation until air is removed
			5. Contact local propane/LP gas
	6.	LP models only)	6.	company
		Pilot is clogged		Clean pilot (see Cleaning and
				Maintenance, page 31) or re-
	7.	Gas regulator setting is not	7.	place pilot assembly
				Replace gas regulator
		correct

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