Desa VYGF33NRC, FPVF33PRA 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 ODS/pilot. This can damage ODS/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 ODS/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 ig-
				nitor to base panel of log set. Nut
	4.	Broken ignitor cable	4.	is located behind base panel
				Replace ignitor cable
	5.	Bad piezo ignitor	5.	Replace piezo ignitor
	6.	Ignitor electrode positioned	6.	Replace pilot assembly
	7.	wrong	7.	Replace pilot assembly
		Ignitor electrode broken
When ignitor button is pressed,	1. Gas supply turned off or equip-		1.	Turn on gas supply or open
there is spark at ODS/pilot but		ment shutoff valve closed	2.	equipment shutoff valve
no ignition	2. Control knob not in PILOT			Turn control knob to PILOT
	3.	position	3.	position
		Control knob not pressed in		Press in control knob while in
	4.	while in PILOT position	4.	PILOT position
		Air in gas lines when in-		Continue holding down con-
		stalled		trol knob. Repeat igniting op-
	5.	Depleted gas supply (pro-	5.	eration until air is removed
				Contact local propane/LP gas
	6.	pane/LP only)	6.	company
		ODS/pilot is clogged		Clean ODS/pilot (see Clean-
				ing and Maintenance, page
				24) or replace ODS/pilot as-
	7.	Gas regulator setting is not	7.	sembly
				Replace gas regulator
		correct

113109-01C www.desatech.com 25