Desa VSL18NT, VSL18PT Slight smoke or odor during, Air passageways on heater, Blocked

TROUBLESHOOTING

Continued

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY
Yellow flame during burner	1. Not enough air		1.	Check burner for dirt and
combustion				debris. If found, clean burner
				(see Cleaning and Mainte-
	2.	Gas regulator defective		nance, page 17)
			2.	Replace gas regulator
	3.	Clogged or dirty burner	3.	Clean burner (see Cleaning
				and Maintenance, page 17)
Slight smoke or odor during	1. Residues from manufacturing		1.	Problem will stop after a few
initial operation		processes		hours of operation
Heater produces a whistling	1. Turning control knob to 5		1.	Turn control knob to 1 posi-
noise when burner is lit		position when burner is cold		tion and let warm up for a
	2.	Air in gas line		minute
			2.	Operate burner until air is
				removed from line. Have gas
				line checked by local natural
	3.	Air passageways on heater		or propane/LP gas company
			3.	Observe minimum installation
		blocked		clearances (see Figure 8, page 9)
	4.	Dirty or partially clogged	4.	Clean burner (see Cleaning
		burner orifice		and Maintenance, page 17)
				or replace burner orifice
White powder residue forming	1. When heated, vapors from		1.	Turn heater off when using
within burner box or on adjacent		furniture polish, wax, carpet		furniture polish, wax, carpet
walls or furniture		cleaners, etc. may turn into		cleaners or similar products
		white powder residue
Blower fan does not come on	1. Power cord not connected		1.	Connect power cord to 120V
	2.	No power to electric outlet		60Hz outlet
			2.	Have a qualified service per-
	3.	Time delay for thermal switch		son check for power at outlet
			3.	Wait 4 to 5 minutes with the
		to warm up		burner on
	4.	Bad switch	4.	Replace switch
	5.	Loose wire connection	5.	Reconnect wires

Heater produces a clicking/tick- ing noise just after burner is lit or shut off

1.Metal expanding while heat- ing or contracting while cooling

1.This is common with most heat- ers. If noise is excessive, contact qualified service person

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