26

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 24) 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 24) or

 

 

 

 

replace burner orifice

 

 

 

 

 

Burner backfiring

1.

Burner orifice is

1.

Clean burner (see

during combustion

 

clogged or damaged

 

Cleaning and Mainte-

 

 

 

 

nance, page 24) or

 

 

 

 

replace burner orifice

 

2.

Burner damaged

2.

Replace burner pressure

 

3.

Low inlet gas pressure

3.

Contact local natural gas

 

 

 

 

company

 

4.

Gas regulator defective

4.

Replace gas regulator

 

 

 

 

Slight smoke or odor

1. Residues from manu-

1.

Problem will stop after a

during initial operation

 

facturing processes

 

few hours of operation

 

 

 

 

 

Fireplace produces a

1.

Air in gas line

1.

Operate burner until air

whistling noise when

 

 

 

is removed from line.

burner is lit

 

 

 

Have gas line checked

 

 

 

 

by local natural gas

 

 

 

 

company

 

2.

Air passageways on

2.

Observe minimum

 

 

fireplace blocked

 

installation clearances

 

 

 

 

(see Figure 6 and 7,

 

 

 

 

page 11)

 

3.

Dirty or partially

3.

Clean burner (see

 

 

clogged burner orifice

 

Cleaning and Mainte-

 

 

 

 

nance, page 24) or

 

 

 

 

replace burner orifice

103670

Page 26
Image 26
Vanguard Heating VMH10TN installation manual TROUBLE- Shooting