Troubleshooting

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

ODS/pilot lights but flame

1. Control knob not fully pressed in

1.

Press in control knob fully

goes out when control knob is

2. Control knob not pressed in

2.

After ODS/pilot lights, keep

released

 

long enough

 

control knob pressed in 30

 

3.

Equipment shutoff valve not

3.

seconds

 

Fully open equipment shutoff

 

4.

fully open

4.

valve

 

Pilot flame not touching ther-

A) Contact local natural or

 

 

mocouple, which allows ther-

 

propane/LP gas company

 

 

mocouple to cool, causing

 

B) Clean ODS/pilot (see

 

 

pilot flame to go out. This

 

 

 

problem could be caused by

 

Cleaning and Maintenance,

 

 

one or both of the following:

 

page 20) or replace ODS/pilot

 

 

A) Low gas pressure

 

assembly

 

 

B) Dirty or partially clogged

 

 

 

 

5.

ODS/pilot

5.

Hand tighten until snug, then

 

Thermocouple connection

 

6.

loose at control valve

6.

tighten 1/4 turn more

 

Thermocouple damaged

Replace pilot assembly

 

7.

Control valve damaged

7.

Replace control valve

 

8.

Safety interlock system has

8.

Wait one minute for safety in-

 

 

been triggered

 

terlock system to reset. Repeat

 

 

 

 

ignition operation.

 

 

 

 

 

One or both burners do not light

1. Inlet gas pressure is too low

1.

Contact local natural or pro-

after ODS/pilot is lit

2.

Burner orifice(s) clogged

 

pane/LP gas company

 

2. Clean burner(s) (see Cleaning

 

 

 

 

and Maintenance, page 20)

 

3.

Mislocated crossover tube

3.

or replace burner orifice(s)

 

Contact qualified service

 

 

 

 

person

 

Delayed ignition of one or both

1. Manifold pressure is too low

1.

Contact local natural or pro-

burners

2.

Burner orifice(s) clogged

2.

pane/LP gas company

 

Clean burner(s) (see Cleaning

 

 

 

 

and Maintenance, page 25) or

 

3.

Mislocated crossover tube

3.

replace burner orifice(s)

 

Contact qualified service person

 

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning

bustion

 

damaged

 

and Maintenance, page 20)

 

2.

Damaged burner

2.

or replace burner orifice(s)

 

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas regulator

 

 

 

 

 

Yellow flame in front burner

1. Not enough air

1.

Check burner(s) for dirt

during burner combustion

 

 

 

and debris. If found, clean

 

 

 

 

burner(s) (see Cleaning and

 

2.

Gas regulator defective

2.

Maintenance, page 20)

 

Replace gas regulator

119303-01A

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Desa VsGF28PTF, VsGF28nTF installation manual Maintenance