www.fmiproducts.com
125598-01D
20
POSSIBLE 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. Pilot flame not touching thermo
-
couple, which allows thermo
-
couple to cool, causing pilot flame
to go out. This problem could be
caused by one or both of the fol
-
lowing:
A) Low gas pressure
B) Dirty or partially clogged ODS/
pilot
6. Thermocouple connection loose
at control valve
7. Thermocouple damaged
8. Control valve damaged
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
3. Thermopile leads disconnected
or improperly connected.
4. Remote selector in OFF position
5. Wire disconnected from gas con
-
trol
1. Manifold pressure is too low
2. Burner orifice clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or dam
-
aged
2. Damaged burner
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 in
-
terlock system to reset. Repeat
ignition operation
4. Fully open equipment shutoff
valve
5. A) Contact local natural or pro
-
pane/LP gas company
5 B) Clean ODS/pilot (see
Cleaning
and Maintenance
, page 16) or
replace ODS/pilot assembly
6. Hand tighten until snug, then
tighten 1/4 turn more
7. Replace pilot assembly
8. Replace control valve
1. Contact local natural or propane/
LP gas company
2. Clean burner (see
Cleaning and
Maintenance
, page 16) or replace
burner orifice(s)
3.
Reconnect leads see
wiring diagram
,
page 30
4. Put remote selector in ON posi
-
tion
5. See
Wiring Diagram
, page 18
1. Contact local natural or propane/
LP gas company
2. Clean burner (see
Cleaning and
Maintenance
, page 16) or replace
burner orifice(s)
3. Contact qualified service person
1. Clean burner (see
Cleaning and
Maintenance
, page 16) or replace
burner orifice
2. Replace damaged burner
3. Replace gas regulator
OBSERVED PROBLEM
ODS/pilot lights but flame goes out
when control knob is released
Burner does not light after pilot is lit
Delayed ignition of burner
Burner backfiring during combustion
TROUBLESHOOTING
Continued