Desa RN30BT installation manual From

TROUBLE- SHOOTING

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OBSERVED	POSSIBLE
PROBLEM	CAUSE				REMEDY
Burner does not light	2.	Burner orifice diameter			2.	Replace burner orifice.
after ODS/pilot is lit.		is too small.
(continued from page	3.	Inlet gas pressure is too			3.	Contact local natural gas
21)		low.				company.
Delayed ignition of	1.	Manifold pressure is too			1.	Contact local natural gas
burner		low.				company.
	2.	Burner	orifice	is	2.	Clean burner (see Clean-
		clogged.				ing and Maintenance,
						page 20) or replace burner
						orifice.
Burner backfiring	1.	Burner	orifice	is	1.	Clean burner (see Clean-
during combustion.		clogged or damaged.				ing and Maintenance,
						page 20) or replace burner
						orifice.
	2.	Burner damaged			2.	Replace burner.
	3.	Defective gas regulator			3.	Replace gas regulator.
Yellow flame during	1.	Not enough air			1.	Check burner for dirt and
burner combustion						debris. If found, clean
						burner (see Cleaning and
						Maintenance, page 20).
	2.	Defective gas regulator			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

Heater produces a 1.	Turning control knob to
whistling noise when	HIGH position when
burner is lit.	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 line checked by local natural gas company.

3.Observe minimum instal- lation clearances (see Figure 2, page 6).

4.Clean burner (see Clean- ing and Maintenance, page 20) or replace burner orifice.

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