24

TROUBLE- SHOOTING

Continued

OBSERVED

POSSIBLE

 

 

PROBLEM

CAUSE

REMEDY

 

 

 

 

 

Burner does not light

1.

Burner orifice is

1.

Clean burner (see

after ODS/pilot is lit

 

clogged

 

Cleaning and Mainte-

 

 

 

 

nance, page 22) or

 

 

 

 

replace burner orifice

 

2.

Burner orifice diameter

2.

Replace burner orifice

 

 

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

 

too low

 

company

 

2.

Burner orifice is

2.

Clean burner (see

 

 

clogged

 

Cleaning and Mainte-

 

 

 

 

nance, page 22) or

 

 

 

 

replace burner orifice

 

 

 

 

 

Burner backfiring

1.

Burner orifice is

1.

Clean burner (see

during combustion

 

clogged or damaged

 

Cleaning and Mainte-

 

 

 

 

nance, page 22) 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 22)

 

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

 

 

 

 

 

 

 

 

Heater produces a

1. Turning control knob

1.

Turn control knob to LO

whistling noise when

 

to HI position when

 

position and let warm up

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 Figure 4, page 10)

 

4.

Dirty or partially

4.

Clean burner (see

 

 

clogged burner orifice

 

Cleaning and Mainte-

 

 

 

 

nance, page 22) or

 

 

 

 

replace burner orifice

103874

Page 24
Image 24
Desa VN2000BTC, VN2800BTC installation manual TROUBLE- Shooting

VN2000BTC, VN2800BTC specifications

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