Louisville Tin and Stove VC702A-H, VCR702A-H Trouble Shooting Chart Automatic Pilot & Valve

TROUBLE SHOOTING CHART - POOR HEATING RESULTS - Cont’d.

SYMPTOM		POSSIBLE CAUSES		CORRECTIVE ACTION
Not enough heat	1.	Heater undersized.	1.	This is especially true when a dwelling or room is
				enlarged. Have the heat loss calculated and compare
				to the heater output (70% of input). Your gas company
				or installer can supply you with this information. If
				heater is undersized, replace with correct size unit.
	2.	Temperature dial set too low.	2.	Raise setting of temperature dial. See “Lighting and
				Shutting Down Instructions”.
	3.	Incorrect gas supply pressure.	3.	Check gas supply pressure and regulator pressure as
				outlined above.
Too much heat	1.	Temperature dial set too high.	1.	Lower setting of temperature dial. See “Lighting and
				Shutting Down Instructions”.
	2.	Combination control valve sticks open.	2.	Replace combination control valve.

TROUBLE SHOOTING CHART - AUTOMATIC PILOT & VALVE

Burner won’t light	1. Pilot flame too large or too small.		1.	Re-adjust pilot flame using adjustment on combination
				control valves (See Fig. 1 & 1A).
	2.	Defective combination control valve.	2.	Replace valve.
Pilot outage	1.	Dirt in pilot orifice.	1.	Clean pilot orifice with air or solvent, do not ream.
	2.	Pilot lighter door open.	2.	Close pilot lighter door.
	3.	Defective automatic pilot section in	3.	Replace combination control valve.
		combination control valve.
	4.	Defective thermocouple.	4.	Replace thermocouple.
	5.	Vent safety shut off system.	5.	See “Venting” section.
Pilot will not stay lit	1. Pilot flame too large or too small.		1.	Re-adjust pilot flame using adjustment on combination
when control knob				control valves (See Fig. 1 & 1A).
is released	2. Defective thermocouple.		2.	Replace thermocouple.
	3.	Defective gas valve.	3.	Replace gas valve.
	4.	Loosen connections at spill switch or	4.	Tighten connections.
		ECO on gas valve.

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