TROUBLE- SHOOTING

Continued

OBSERVED

POSSIBLE

 

 

PROBLEM

CAUSE

REMEDY

 

 

 

 

 

Burner does light

1.

Burner orifice clogged

1.

Clean burner (see

after ODS/pilot is lit

 

 

 

Cleaning and Mainte-

 

 

 

 

nance, page 23) or

 

 

 

 

replace burner orifice

 

2.

Inlet gas pressure is

2.

Contact local natural gas

 

 

too low

 

company

 

3.

Burner orifice diameter

3.

Replace burner orifice

 

 

is too small

 

 

 

 

 

 

 

Delayed ignition

1.

Manifold pressure is

1.

Contact local natural gas

burner

 

too low

 

company

 

2.

Burner orifice clogged

2.

Clean burner (see

 

 

 

 

Cleaning and Mainte-

 

 

 

 

nance, page 23) or

 

 

 

 

replace burner orifice

 

 

 

 

 

Burner backfiring

1.

Burner orifice is

1.

Clean burner (see

during combustion

 

clogged or damaged

 

Cleaning and Mainte-

 

 

 

 

nance, page 23) or

 

 

 

 

replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas regulator

 

 

 

 

Slight smoke or

1. Not enough air

1.

Check burner for dirt

odor during initial

 

 

 

and debris. If found,

operation

 

 

 

clean burner (see

 

 

 

 

Cleaning and Mainte-

 

 

 

 

nance, page 23)

 

2.

Gas regulator defective

2.

Replace gas regulator

 

3.

Residues from manu-

3.

Problem will stop after a

 

 

facturing processes

 

few hours of operation

 

 

and logs curing

 

 

 

 

 

 

Moisture/condensa-

1. Not enough combus-

1.

Refer to Air for Com-

tion noticed on

 

tion/ventilation air

 

bustion and Ventilation

windows

 

 

 

requirements (page 5)

 

 

 

 

Heater produces a

1. Turning control knob

1.

Turn control knob to LO

whistling noise

 

to HI position when

 

position and let warm up

when burner is lit

 

burner is cold

 

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

 

 

 

 

company

 

3.

Air passageways on

3.

Observe minimum

 

 

heater blocked

 

installation clearances

 

 

 

 

(see pages 9-12)

 

4.

Dirty or partially

4.

Clean burner (see

 

 

clogged burner orifice

 

Cleaning and Maintenance,

 

 

 

 

page 23) or replace

 

 

 

 

burner orifice

Continued

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Image 25
Desa Tech CGD3924N, CGD3018N, CGD3930N installation manual Refer to Air for Com