TROUBLE- SHOOTING

Continued

OBSERVED

POSSIBLE

 

 

PROBLEM

CAUSE

REMEDY

 

 

 

 

 

Burner does not light

1.

Inlet gas pressure is

1.

Contact local natural

after ODS/pilot is lit

 

too low

 

gas company

 

2.

Burner orifice clogged

2.

Clean burner (see

 

 

 

 

Cleaning and Mainte-

 

 

 

 

nance, page 25) or

 

3.

Burner orifice diameter

 

replace burner orifice

 

3.

Replace burner orifice

 

 

is too small

 

 

 

 

 

 

 

Delayed ignition

1.

Manifold pressure is

1.

Contact local propane/

burner

 

too low

 

LP gas company

 

2.

Burner orifice clogged

2.

Clean burner (see

 

 

 

 

Cleaning and Mainte-

 

 

 

 

nance, page 25) or

 

 

 

 

replace burner orifice

 

 

 

 

 

Burner backfiring

1.

Burner orifice is

1.

Clean burner (see

during combustion

 

clogged or damaged

 

Cleaning and Mainte-

 

 

 

 

nance, page 25) or

 

2.

Damaged burner

 

replace burner orifice

 

2.

Replace damaged

 

3.

Gas regulator defective

 

burner

 

3.

Replace gas regulator

 

 

 

 

Slight smoke or odor

1. Not enough air

1.

Check burner for dirt

during initial opera-

 

 

 

and debris. If found,

tion

 

 

 

clean burner (see

 

 

 

 

Cleaning and Mainte-

 

2.

Gas regulator defective

 

nance, page 25)

 

2.

Replace gas regulator

 

3.

Residues from manu-

3.

Problem will stop after

 

 

facturing processes

 

a few hours of opera-

 

 

and logs curing

 

tion

 

 

 

 

Heater produces a

1. Turning control knob

1.

Turn control knob to

whistling noise when

 

to HI position when

 

LO position and let

burner is lit

 

burner is cold

 

warm up for a minute

 

2.

Air in gas line

2.

Operate burner until air

 

 

 

 

is removed from line.

 

 

 

 

Have gas line checked

 

 

 

 

by local natural gas

 

3.

Air passageways on

 

company

 

3.

Observe minimum

 

 

heater blocked

 

installation clearances

 

4.

Dirty or partially

 

(see pages 10-13)

 

4.

Clean burners (see

 

 

clogged burner orifice

 

Cleaning and Mainte-

 

 

 

 

nance, page 25) or

 

 

 

 

replace burner orifice

 

 

 

 

 

Moisture/condensation

1.

Not enough combus-

1.

Refer to Air for Com-

noticed on windows

 

tion/ventilation air

 

bustion and Ventilation

 

 

 

 

requirements (page 5-8)

103310

27

Page 27
Image 27
Desa UNVENTED (VENT-FREE) PROPANE/LPGAS LOG HEATER installation manual Refer to Air for Com