Desa LEP) (V)L36(ZNR, LZPR) Continued, Burner backfiring during com, Maintenance, page

TROUBLESHOOTING

Continued

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY
Burner backfiring during com-	1.	Burner orifice is clogged or	1.	Clean burner (see Cleaning
bustion		damaged		and Maintenance, page 28) or
	2.	Damaged burner		replace burner orifice
			2.	Replace damaged burner
	3.	Gas regulator defective	3.	Replace gas regulator
Yellow flame in front burner dur-	1.	Not enough air	1.	Check burner(s) for dirt
ing burner combustion				and debris. If found, clean
				burner(s) (see Cleaning and
	2.	Gas regulator defective		Maintenance, page 28)
			2.	Replace gas regulator
Slight smoke or odor during initial	1.	Residues from manufacturing	1.	Problem will stop after a few
operation		processes and logs curing		hours of operation
Heater produces a whistling noise	1.	Turning control knob to HI	1.	Turn control knob to LO po-
when burners are lit		position when burners are		sition and let warm up for a
		cold		minute
	2.	Air in gas line	2.	Operate burners until air is
				removed from line. Have gas
				line checked by local natural
				or propane/LP gas company
	3.	Air passageways on heater	3.	Observe minimum installa-
		blocked		tion clearances (see pages 9
	4.	Dirty or partially clogged		through 11)
			4.	Clean burners (see Cleaning
		burner orifice(s)		and Maintenance, page 28) or
				replace burner orifice(s)
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. turn into white		cleaners or similar products
		powder residue
Moisture/condensation noticed	1.	Not enough combustion/ven-	1.	Refer to Air for Combustion
on windows		tilation air		and Ventilation requirements
				(page 7)

115254-01A www.desatech.com 31