
Comfortflame.US.com
900570-00_NC
21
POSSIBLE CAUSE
1. Control knob not fully pressed in
2. Control knob not pressed in long enough
3. Safety interlock system has been trig-
gered
4. Equipment shutoff valve not fully open
5. Pilot flame not touching thermocouple,
which allows thermocouple to cool, caus-
ing 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
6. Thermocouple connection loose at con-
trol 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 im-
properly connected.
4. Remote selector in OFF position
5. Wire disconnected from gas control
1. Manifold pressure is too low
2. Burner orifice clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or damaged
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 interlock sys-
tem to reset. Repeat ignition operation
4. Fully open equipment shutoff valve
5.
A) Contact local natural or propane/LP
gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 18) 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 Main-
tenance, page 18) or replace burner
orifice(s)
3. Reconnect leads see wiring diagram, page 19
4. Put remote selector in ON position
5. See Wiring Diagram, page 19
1. Contact local natural or propane/LP gas
company
2. Clean burner (see Cleaning and Main-
tenance, page 18) or replace burner
orifice(s)
3. Contact qualified service person
1. Clean burner (see Cleaning and Mainte-
nance, page 18) 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