Desa CGN12 installation manual Control knob set be

OBSERVED		POSSIBLE
PROBLEM		CAUSE				REMEDY
Burner(s) does	not	1. Burner		orifice(s)	is	1.	Clean burner orifice(s)
light after ODS/pilot is			clogged				(see CLEANING AND
lit							MAINTENANCE, page
							17) or replace burner
							orifice(s)
		2.	Burner	orifice(s)	di-	2.	Replace burner orifice(s)
			ameter is too small
		3.	Inlet gas pressure is too			3.	Contact local natural gas
			low				company
Delayed ignition	of	1.	Manifold pressure is too			1.	Contact local natural gas
burner(s)			low				company
		2.	Burner	orifice(s)	is	2.	Clean burner orifice(s)
			clogged				(see CLEANING AND
							MAINTENANCE, page
							17) or replace burner
							orifice(s)
Burner backfiring		1.	Burner	orifice(s)	is	1.	Clean burner orifice(s)
during combustion			clogged or damaged				(see CLEANING AND
							MAINTENANCE, page
							17) or replace burner
							orifice(s)
		2.	Burner damaged			2.	Replace burner
		3.	Gas regulator defective			3.	Replace gas regulator

Burner plaque(s) does	1.	Plaque damaged
not glow	2.	Inlet gas pressure is too
		low
	3.	Control knob set be-
		tween locked positions

1.Replace burner

2.Contact local natural gas company

3.Turn control knob until it locks at desired setting

Slight smoke or odor	1. Residues from manu-	1. Problem will stop after a
during initial opera-	facturing processes	few hours of operation
tion

Heater produces a clicking/ticking noise just after burner is lit or shut off

1.Metal expanding while heating or contracting while cooling

1.This is common with most heaters. If noise is excessive, contact quali- fied service person

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