TOA Electronics VF5000-CMP-2 Guide for Unvented GAS Products, Possible Cause Remedy

	TROUBLESHOOTING		GUIDE FOR UNVENTED GAS PRODUCTS
OBSERVED PROBLEM		POSSIBLE CAUSE			REMEDY
1.	When igniter button is	A. Igniter electrode positioned wrong.		Replace igniter.
	pressed, there is no spark
				Replace igniter.
	at ODS/pilot.	B. Igniter electrode broken.
		C. Igniter electrode not connected to igniter cable.		Reconnect igniter cable.
		D. Igniter cable pinched or wet.		Free igniter cable if pinched by any metal or tubing. Keep igniter cable dry.
		E. Piezo igniter nut is loose.		Tighten nut.
		F. Broken igniter cable.		Replace igniter cable.
		G. Bad piezo igniter.		Replace piezo igniter.
2.	Heater produces unwanted	A. Heater burning vapors from paint, hair spray, glues, etc.		Ventilate room. Stop using odor-causing products while fireplace is running.
	odors.
		B. Gas leak. See Warning statement on the front page.		Locate and correct all leaks.
3.	Heater shuts off in use	A. Not enough fresh air is available.		Open window and/or door for ventilation.
	(ODS operates).
		B. Low line pressure.		Contact local gas company.
		C. ODS/pilot is partially clogged.		Clean ODS/pilot.
4.	Gas odor even when control	A. Gas leak. See Warning statement on the front page.		Locate and correct all leaks (see Checking Gas Connections, page 7).
	knob is in “OFF” position.
		B. Control valve defective.		Replace control valve.
5.	When igniter button is	A. Gas supply turned off or manual shut-off valve closed.		Turn on gas supply or open manual shut-off valve.
	pressed, there is spark at	B. Control knob not in “PILOT” position.		Turn control knob to pilot position.
	ODS/pilot, but no ignition.
		C. Control knob not pressed in while in “PILOT” position.		Press in control knob while in pilot position.
		D. Air in gas lines when installed.		Continue holding down control knob. Repeat igniting operation until air is
				removed.
		E. ODS/pilot is clogged.		Replace ODS/pilot assembly or get it serviced.
		F. Gas regulator setting is not correct.		Replace gas regulator.
6.	ODS/pilot lights, but flame	A. Control knob not fully pressed in.		Press in control knob fully.
	goes out when control knob
	is released.	B. Control knob not pressed in long enough.		After ODS/pilot lights, keep control knob pressed in 30 seconds.
		C. Manual shut-off valve not fully open.		Fully open manual shut-off valve.
		D. Thermocouple connection loose at control valve.		Hand tighten until snug, then tighten ¹⁄₄ turn more.
		E. Pilot flame not touching thermocouple, which allows
		thermocouple to cool, causing pilot flame to go out. This
		problem could be caused by one or both of the following:		1). Contact local gas company.
		1). Low gas pressure
		2). Dirty or partially clogged ODS/pilot		2). Replace ODS/pilot assembly or get pilot serviced.
		F. Thermocouple damaged.		Replace thermocouple.
		G. Control valve damaged.		Replace control valve.
7.	Burner does not light after	A. Burner orifice is clogged.		Clean burner or replace burner orifice.
	ODS/pilot is lit.
		B. Burner orifice diameter is too small.		Replace burner orifice.
		C. Inlet gas pressure is too low.		Contact local gas company.
8.	Delayed ignition of burner.	A. Manifold pressure is too low.		Contact local gas company.
		B. Burner orifice is clogged.		Clean burner or replace burner orifice.
9.	Burner backfiring during	A. Burner orifice is clogged or damaged.		Clean burner or replace burner orifice.
	combustion.
		B. Burner damaged.		Replace burner.
		C. Gas regulator defective.		Replace gas regulator.
10.	Slight smoke or odor during	A. Vapors from paint or curing process of logs.		Problem will stop after a few hours of operation. SFC recommends running the
	initial operation.			heater with excess ventilation for the first few hours.
11.	Heater produces a whistling	A. Turning control knob to “HI” position when burner is cold.		Turn control knob to “LO” position and let warm up for a minute.
	noise when burner is lit.
		B. Air in gas line.		Operate burner until air is removed from line. Have gas line checked by local gas
				company.
		C. Dirty or partially clogged burner orifice.		Clean burner	or replace burner orifice.	15