User Guide

www.fmiproducts.com
116646-01J 33
OBSERVED PROBLEM
Pilot lights but ame goes
out when control knob is
released
Burner does not light after
pilot is lit
Delayed ignition burner
Burner backring during com-
bustion
Slight smoke or odor during
initial operation
POSSIBLE CAUSE
1. Gas control knob not fully
pressed in
2. Gas c ont rol k nob 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
pilot
5. Thermocouple connection
loose at control valve
6. Thermocouple damaged
7. Control valve damaged
1. Burner orice clogged
2. Inlet gas pressure is too
low
3. Thermopile leads discon-
nected or improperly con-
nected
4. Thermopile is defective
1. Manifold pressure is too
low
2. Burner porting or orifice
clogged
1. Burner orice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
1. Residues from manufac-
turing processes and logs
curing
REMEDY
1. Press in gas control knob
fully
2. After pilot lights, keep gas
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 pilot (see Cleaning
and Maintenance, page 30)
or replace pilot assembly
5. Hand tighten until snug,
then tighten 1/4 turn more
6. Replace pilot assembly
7. Replace control valve
1. Clean burner (see Cleaning
and Maintenance, page 30)
or replace burner orice
2. Contact local propane/LP or
natural gas company
3. Reconnect leads
4. Replace thermopile
1. Contact local propane/LP or
natural gas company
2. Clean burner (see Cleaning
and Maintenance, page 30)
or replace burner orice
1. Clean burner (see Cleaning
and Maintenance, page 30)
or replace burner orice
2. Replace damaged burner
3. Replace gas control
1. Problem will stop after a few
hours of operation
TROUBLESHOOTING
Continued