What should I do if the burner does not light after ODS/pilot is lit?

Possible causes include a clogged burner orifice, low inlet gas pressure, or a small burner orifice diameter. You may need to clean or replace the burner orifice.

How can I stop the white powder residue from forming within the burner box or on adjacent walls or furniture?

When heated, vapors from furniture polish, wax, carpet cleaners, etc. may turn into a white powder residue. Turn the heater off when using these products to prevent the formation of the residue.

Why does my heater produce a whistling noise when the burner is lit?

The whistling noise may occur when turning the control knob to the HI position when the burner is cold. Try turning the control knob to the LO position and letting it warm up for a minute.

Troubleshooting, Continued, Maintenance, page

TROUBLESHOOTING

Continued

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY
Burner does light after ODS/pilot is lit	1.	Burner orifice clogged	1.	Clean burner (see Cleaning and Mainte-
				nance, page 19) or replace burner orifice
	2.	Inlet gas pressure is too low	2.	Contact local natural or propane/LP gas
				company
	3.	Burner orifice diameter is too small	3.	Replace burner orifice

Delayed ignition of burner	1.	Manifold pressure is too low	1.	Contact local natural or propane/LP gas
				company
	2.	Burner orifice clogged	2.	Clean burner (see Cleaning and Mainte-
				nance, page 19) or replace burner orifice

Burner backfiring during combustion	1.	Burner orifice is clogged or damaged	1.	Clean burner (see Cleaning and Mainte-
				nance, page 19) or replace burner orifice
	2.	Damaged burner	2.	Replace damaged burner
	3.	Gas regulator defective	3.	Replace gas regulator

Slight smoke or odor during initial operation	1.	Not enough air	1.	Check burner for dirt and debris. If
				found, clean burner (see Cleaning and
				Maintenance, page 19)
	2.	Gas regulator defective	2.	Replace gas regulator
	3.	Residues from manufacturing processes	3.	Problem will stop after a few hours of
		and logs curing		operation

Moisture/condensation noticed on windows	1.	Not enough combustion/ventilation air	1.	Refer to Air for Combustion and Venti-
				lation requirements (page 4)

Heater produces a whistling noise when	1.	Turning control knob to HI position	1.	Turn control knob to LO position and
burner is lit		when burner is cold		let warm up for a minute
	2.	Air in gas line	2.	Operate burner until air is removed from
				line. Have gas line checked by local
				natural or propane/LP gas company
	3.	Air passageways on heater blocked	3.	Observe minimum installation clear-
				ances (see pages 7 through 9)
	4.	Dirty or partially clogged burner orifice	4.	Clean burner (see Cleaning and Mainte-
				nance, page 19) or replace burner orifice