Desa CGN10 Trouble- Shooting, Continued, Observed, Possible, Remedy, Problem, Cause

TROUBLE- SHOOTING

OBSERVED	POSSIBLE	REMEDY
PROBLEM	CAUSE

Continued

Burner does not light after ODS/pilot is lit

1.Burner orifice is clogged

2.Burner orifice diameter is too small

3.Inlet gas pressure is too low

1.Clean burner orifice (see Cleaning and Mainte- nance, page 20) or replace burner orifice

2.Replace burner orifice

3.Contact local natural gas company

Delayed ignition of	1.	Manifold pressure is	1.	Contact local natural gas
burner		too low		company
	2.	Burner orifice is	2.	Clean burner orifice (see
		clogged		Cleaning and Mainte-
				nance, page 20) or
				replace burner orifice
Burner backfiring	1.	Burner orifice is	1.	Clean burner orifice (see
during combustion		clogged or damaged		Cleaning and Mainte-
				nance, page 20) or
				replace burner orifice
	2.	Burner damaged	2.	Replace burner
	3.	Gas regulator defective	3.	Replace gas regulator
Yellow flame during	1. Not enough air		1.	Check burner for dirt
burner combustion				and debris. If found,
				clean burner (see
				Cleaning and Mainte-
				nance, page 20)
	2.	Gas regulator defective	2.	Replace gas regulator
Slight smoke or odor	1. Residues from manu-		1.	Problem will stop after a
during initial opera-		facturing processes		few hours of operation
tion

22

Heater produces a whistling noise when burner is lit

1.Turning control knob to HIGH position when burner is cold

2.Air in gas line

3.Air passageways on heater blocked

4.Dirty or partially clogged burner orifice

1.Turn control knob to LOW position and let warm up for a minute

2.Operate burner until air is removed from line. Have gas checked by local natural gas com- pany

3.Observe minimum installation clearances (see Figure 4, page 10)

4.Clean burner (see Cleaning and Mainte- nance, page 20) or replace burner orifice.

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