20
W415-0809 / B / 01.07.11
SYMPTOM
PROBLEM
TEST SOLUTION
Pilot burning;
no gas to main
burner; gas
knob is on ‘HI’;
wall switch /
thermostat is on.
Thermostat or switch is
defective.
-
Connect a jumper wire across the wall switch
terminals; if main burner lights, replace switch /
thermostat.
Wall switch wiring is
defective.
-
Disconnect wires from valve. Connect a jumper wire
across terminals 1 & 3; if the main burner lights,
check the wires for defects and / or replace wires.
Main burner orifi ce is
plugged.
-
Remove stoppage in orifi ce.
Faulty valve.
-
Replace.
Pilot will not light.
Out of propane gas.
-
Fill the tank.
No spark at pilot burner.
-
Check if pilot can be lit by a match.
-
Check that the wire is connected to the push button
ignitor.
-
Check if the push button ignitor needs tightening.
-
Replace the wire if the wire insulation is broken or
frayed.
-
Replace the electrode if the ceramic insulator is
cracked or broken.
-
Replace the push button ignitor.
No gas at the pilot burner.
-
Check that the manual valve is turned on.
-
Check the pilot orifi ce for blockage.
-
Replace the valve / Oxygen Depletion Sensor
System.
-
Call the gas distributor.
Pilot goes out
while standing;
Main burner is in
‘OFF’ position.
Gas piping is undersized.
-
Turn on all gas appliances and see if pilot fl ame
fl utters, diminishes or extinguishes, especially
when main burner ignites. Monitor appliance supply
working pressure.
-
Check if supply piping size is to code. Correct all
undersized piping.
Pilot fl ame is not large
enough.
-
ODS Burner requires checking.
Main burner will
not light; or is slow
to light, noisy pilot.
Inlet pressure too high.
-
Adjust inlet pressure to ensure maximum 7.0” W.C.
at gas valve for natural gas and 13.0” W.C. for
propane.
Pilot fl ame blowing off,
missing thermopile.
Carbon is being
deposited on
glass, logs,
rocks, media
or combustion
chamber.
Air shutter has become
blocked.
-
Ensure air shutter opening is free of lint or other
obstructions.
Flame is impinging on the
glass, logs, rocks, media
or combustion chamber.
-
Check that the logs are correctly positioned.
-
Check for ceiling or oscillating fans that may be
infl uencing the fl ame.
-
Open air shutter to increase the primary air. See
“VENTURI ADJUSTMENT” section.
-
Check the input rate: check the manifold pressure
and orifi ce size as specifi ed by the rating plate.
42.4_2_A
ELECTRODE
THERMOCOUPLE
THERMOPILE
PILOT
BURNER