Vanguard Heating VGN30 installation manual Cleaning

OBSERVED	POSSIBLE
PROBLEM	CAUSE	REMEDY

When ignitor button is pressed, there is spark at ODS/pilot but no ignition

1.Gas supply turned off or manual shutoff valve closed

2.Control knob not in PI- LOT position

3.Control knob not pressed in while in PI- LOT position

4.Air in gas lines when installed

5.ODS/pilot is clogged

6.Gas regulator setting is not correct

1.Turn on gas supply or open manual shutoff valve

2.Turn control knob to PI- LOT position

3.Press in control knob while in PILOT position

4.Continue holding down control knob. Repeat ig- niting operation until air is removed

5.Clean ODS/pilot (see

CLEANING AND M A I N T E N A N C E , page 17) or replace ODS/pilot assembly

6.Replace gas regulator

18

ODS/pilot lights but	1.	Control knob not fully					1.	Press	in control	knob
flame goes out when		pressed in						fully
control knob is	2.	Control		knob		not	2.	After ODS/pilot lights,
released		pressed in long enough						keep	control	knob
								pressed in 30 seconds
	3.	Manual shutoff			valve		3.	Fully open manual shut-
		not fully open						off valve
	4.	Thermocouple connec-					4.	Hand tighten until snug,
		tion	loose at control					then tighten 1/4 turn
		valve						more
	5.	Pilot flame not touching					5.	A) Contact local natural
		thermocouple,			which			gas company
		allows thermocouple to
		cool,	causing		pilot			B) Clean ODS/pilot (see
		flame to go out. This						CLEANING		AND
		problem		could		be		M A I N T E N A N C E ,
		caused by one or both of						page	17) or replace
		the following:						ODS/pilot assembly
		A) Low gas pressure
		B) Dirty		or partially
		clogged ODS/pilot
	6.	Thermocouple			dam-		6.	Replace thermocouple
		aged
	7.	Control valve damaged					7.	Replace control valve
Burner does not light	1. Burner			orifice		is	1.	Clean	burner	(see
after ODS/pilot is lit		clogged						CLEANING		AND
								M A I N T E N A N C E ,
								page	17) or replace
								burner orifice
				Continued					Continued