TROUBLESHOOTING
Continued
OBSERVED PROBLEM
ODS/pilot lights but flame
goes out when control knob
is released
P
OSSIBLE CAUSE
1. Control knob not fully
pressed in
2. Control knob not pressed
in long enough
3. Safety interlock system has
been triggered.
4. Equipment shutoff valve
not fully open
5. Thermocouple connection
loose at control valve
6. Pilot flame not touching
thermocouple, which
allows thermocouple to
cool, causing pilot flame 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
7. Thermocouple damaged
8. Control valve damaged
1. Clean burner orifice(s) (see
Cleaning and Maintenance,
page 17) or replace burner
orifice(s)
2. Contact local natural or
propane/LP gas company
Burner(s) does not light after
ODS/pilot is lit
1. Burner Orifice(s) is clogged
2. Inlet gas pressure is too
low
1. Contact local natural or
propane/LP gas company
2. Clean burner orifice(s) (see
Cleaning and Maintenance,
page 17) or replace burner
orifice(s)
Delayed ignition of burner(s)
1. Manifold pressure is too
low
2. Burner Orifice(s) is clogged
1. Clean burner orifice(s) (see
Cleaning and Maintenance,
page 17) or replace burner
orifice(s)
2. Replace burner
3. Replace gas regulator
Burner backfiring during
combustion
1. Burner orifice(s) is
clogged or damaged
2. Burner damaged
3. Gas regulator defective
REMEDY
1. Press in control knob fully
2. After ODS/pilot lights, keep
control knob pressed in 30
seconds
3. Wait one minute for safety
system to reset.
Repeat ignition operation
4. Fully open equipment shut-
off valve
5. Hand tighten until snug,
then tighten 1/4 turn more
6. A) Contact local natural or
propane/LP gas company
B) Clean ODS/pilot (see
Cleaning and Maintenance,
page 18) or replace ODS/
pilot assembly
7. Replace pilot assembly
8. Replace control valve
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