EN
W415-2354 / B / 12.09.20
71
troubleshooting (millivolt)
27.2_2
symptom
problem
test solution
Pilot will not light.
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
Out of propane gas.
-
Fill the tank.
Spark gap is incorrect.
-
Spark gap should be 0.150” (3.8mm) to 0.175” (4.5mm) from the electrode tip
and the pilot burner. To ensure proper electrode location, tighten securing nut
(fi nger tight plus 1/4 turn).
No gas at the pilot burner.
-
Check that the manual valve is turned on.
-
Check the pilot orifi ce for blockage.
-
Replace the valve.
-
Call the gas distributor.
Pilot goes out when the
gas knob is released.
The gas valve
has an interlock
device which will
not allow the pilot
burner to be lit until
the thermocouple
has cooled. Allow
approximately 60
seconds for the
thermocouple to cool.
System is not correctly purged
-
Purge the gas line.
Out of propane gas.
-
Fill the tank.
Pilot fl ame is not large enough.
-
Turn up the pilot fl ame.
Pilot fl ame is not engulfi ng the
thermocouple
-
Gently twist the pilot head to improve the fl ame pattern around the
thermocouple.
Thermocouple shorting / faulty.
-
Loosen and tighten thermocouple.
-
Clean thermocouple and valve connection.
-
Replace thermocouple.
-
Replace valve.
Faulty valve.
-
Replace.
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 the switch wires & 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 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.
Flames are very
aggressive.
Door is ajar.
-
Ensure the mechanical means of securing the door is providing a tight seal.
Venting action is too
great.
-
Check to ensure venting is properly sealed.
-
If restriction is required see “restricting vertical vents” section.
Remote wall switch is
in ’OFF’ position; main
burner comes on when
gas knob is turned to
‘ON’ position.
Wall switch is mounted upside down.
-
Reverse.
Remote wall switch is grounding.
-
Replace.
Remote wall switch wire is grounding.
-
Check for ground (short); repair ground or replace wire.
Faulty valve.
-
Replace.
INSERT
PHOTO
OF PILOT
HERE
PILOT
BURNER
THERMOCOUPLE
THERMOPILE
