Desa VSGF28NTF - Page 24

www.desatech.com
119303-01E
24
TROUBLESHOOTING
Continued

1. Control knob not fully
pressed in
2. Control knob not pressed in
long enough
3. Equipment shutoff valve not
fully open
4. Pilot flame not touching
thermocouple, which allows
thermocouple to cool, caus-
ing pilot ame to go out. This
problem could be caused by
one or both of the following:
A) Low gas pressure
B) Dirty or partially clogged
ODS/pilot
5. Thermocouple connection
loose at control valve
6. Thermocouple damaged
7. Control valve damaged
8. Safety interlock system has
been triggered
1. Inlet gas pressure is too
low
2. Burner orice(s) clogged
3. Mislocated crossover tube
1. Manifold pressure is too
low
2. Burner orice(s) clogged
3. Mislocated crossover tube
1. Burner orice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
REMEDY
1. Press in control knob fully
2. After ODS/pilot lights, keep
control knob pressed in 30
seconds
3. Fully open equipment shut-
off valve
4. A) Contact local natural or
propane/LP gas company
B) Clean ODS/pilot (see
Cleaning, page 21) or re-
place ODS/pilot assembly
5. Hand tighten until snug,
then tighten 1/4 turn more
6. Replace pilot assembly
7. Replace control valve
8. Wait one minute for safety
interlock system to reset.
Repeat ignition operation.
1. Contact local natural or
propane/LP gas company
2. Clean burner(s) (see Clean-
ing, page 21) or replace
burner orice(s)
3. Contact qualied service
person
1. Contact local natural or
propane/LP gas company
2. Clean burner(s) (see Clean-
ing, page 21) or replace
burner orice(s)
3. Contact qualified service
person
1. Clean burner (see Clean-
ing, page 21) or replace
burner orice(s)
2. Replace damaged burner
3. Replace gas regulator
1. Check burner(s) for dirt
and debris. If found, clean
burner(s) (see Cleaning,
page 21)
2. Replace gas regulator

ODS/pilot lights but ame
goes out when control knob
is released
One or both burners do not
light after ODS/pilot is lit
Delayed ignition of one or
both burners
Burner backfiring during
combustion
Yellow ame in front burner
during burner combustion