Vanguard Heating VMH26TPB installation manual TROUBLE- Shooting, See Cleaning

TROUBLE- SHOOTING

OBSERVED	POSSIBLE
PROBLEM	CAUSE	REMEDY

Continued

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 PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.Depleted gas supply

6.ODS/pilot is clogged

7.Gas regulator setting is not correct

1.Turn on gas supply or open manual shutoff valve

2.Turn control knob to PILOT 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.Contact local propane/ LP gas company

6.Clean ODS/pilot (see Cleaning and Mainte- nance, page 25) or replace ODS/pilot assembly

7.Replace gas regulator

26

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.	Safety interlock system	3.	Wait one minute for
		has been triggered		safety interlock system
				to reset. Repeat
				ignition operation
	4.	Manual shutoff valve	4.	Fully open manual
		not fully open		shut-off valve
	5.	Thermocouple connec-	5.	Hand tighten until
		tion loose at control		snug, then tighten 1/4
		valve		turn more
	6.	Pilot flame not touch-	6. A) Contact local pro-
		ing thermocouple,		pane/LP gas company
		which allows thermo-
		couple to cool, causing		B) Clean ODS/pilot
		pilot flame to go out.		(see Cleaning and
		This problem could be		Maintenance, page 25)
		caused by one or both		or replace ODS/pilot
		of the following:		assembly
		A) Low gas pressure
		B) Dirty or partially
		clogged ODS/pilot
	7.	Thermocouple damaged	7.	Replace thermocouple
	8.	Control valve damaged	8.	Replace control valve

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