TROUBLE- SHOOTING

Continued

OBSERVED

POSSIBLE

 

 

 

PROBLEM

CAUSE

REMEDY

 

 

 

 

 

 

Burner(s) does not

1.

Burner orifice(s) is

1.

Clean burner orifice(s)

light after ODS/pilot

 

clogged

 

(see Cleaning and

is lit

 

 

 

Maintenance, page 21)

 

 

 

 

or replace burner

 

 

 

 

orifice(s)

 

2.

Burner orifice(s)

2.

Replace burner orifice(s)

 

 

diameter is too small

 

 

 

 

3.

Inlet gas pressure is

3.

Contact local natural gas

 

 

too low

 

company

 

 

 

 

 

Delayed ignition of

1.

Manifold pressure is

1.

Contact local natural gas

burner(s)

 

too low

 

company

 

2.

Burner orifice(s) is

2.

Clean burner orifice(s)

 

 

clogged

 

(see Cleaning and

 

 

 

 

Maintenance, page 21)

 

 

 

 

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 21)

 

 

 

 

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

1.

Replace burner

not glow

2.

Inlet gas pressure is

2.

Contact local natural gas

 

 

too low

 

company

 

3.

Control knob set

3.

Turn control knob until

 

 

between locked

 

it locks at desired setting

 

 

positions

 

 

 

 

 

 

 

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. Metal expanding while

1.

This is common with

clicking/ticking noise

 

heating or contracting

 

most heaters. If noise is

just after burner is lit

 

while cooling

 

excessive, contact

or shut off

 

 

 

qualified service person

Continued

23

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Page 23
Image 23
Desa CGN12A installation manual Maintenance

CGN12A specifications

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