Napoleon GD40-N Installation And Operation Instructions Manual page 30

30
SYMPTOM
Pilot burning; no
gas to main
burner; gas knob
is on 'HI'; wall
switch / thermo-
stat is on.
Pilot goes out
while standing;
Main burner is in
'OFF' position.
Pilot will not light.
THERMOPILE
PILOT
BURNER
THERMO-
COUPLE
ELECTRODE
Main burner goes
out; pilot stays on.
Main burner goes
out; pilot goes out.
Remote wall
switch is in "OFF"
position; main
burner comes on
when gas knob is
turned to "ON" po-
sition.
WS-415-091 / 06.26.00
PROBLEM
Themostat or switch is de-
fective.
Wall switch wiring is defec-
tive.
Main burner orifice
plugged.
Faulty valve.
Gas piping is undersized.
No spark at pilot burner
Out of propane gas
Spark gap is incorrect
No gas at the pilot burner
Pilot flame is not large
enough or not engulfing the
thermopile
Thermopile shorting
Remote wall switch wire is
too long; too much resist-
ance in the system.
Faulty thermostat or switch.
Refer to " MAIN BURNER GOES OUT; PILOT STAYS ON "
Vent is blocked
Vent is re-circulating
4" flexible vent has become
disconnected from fireplace.
Wall switch is mounted up-
side down
Remote wall switch is
grounding.
Remote wall switch wire is
grounding.
Faulty valve.
- connect a jumper wire across the wall switch terminals; if main
burner lights, replace switch / thermostat.
- disconnect the switch wires from the valve & connect a jumper wire
across terminals 1 & 3; if the main burner lights, check the wires for
defects and / or replace wires.
is - remove stoppage in orifice.
- replace.
- turn on all gas appliances and see if pilot flame flutters, dimin-
ishes or extinguishes, especially when main burner ignites. Monitor
appliance supply working pressure.
- check if supply piping size is to code. Correct all undersized piping.
- 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.
- fill the tank.
- spark gap should be 0.150" to 0.175" (5/32" to 11/64" approx.) from
the electrode tip and the pilot burner. To ensure proper electrode
location, tighten securing nut (finger tight plus 1/4 turn).
- check that the manual valve is turned on.
- check the pilot orifice for blockage.
- replace the valve.
- call the gas distributor.
- turn up pilot flame.
- replace pilot assembly.
- clean thermopile connection to the valve. Reconnect.
- replace thermopile / valve.
- shorten wire to correct length or wire gauge.
- replace.
- check for vent blockage.
- check joint seals and installation.
- re-attach to fireplace.
- reverse.
- replace.
- check for ground (short); repair ground or replace wire.
- replace.
TEST SOLUTION