Troubleshooting Guide - Napoleon GD16 - N Installation And Operation Instructions Manual

22
TROUBLE SHOOTING GUIDE
B
EFORE ATTEMPTING TO TROUBLESHOOT
SYMPTOM SYMPTOM SYMPTOM SYMPTOM SYMPTOM
Pilot goes out
while standing;
Main burner is in
'OFF' position.
Pilot goes out when
the gas knob is re-
leased.
The gas valve has
an interlock device
which will not allow
the pilot burner to
be lit until the ther-
mocouple has
cooled. Allow ap-
proximately 60
seconds for the
thermocouple to
cool.
Pilot burning; no
gas to main
burner; gas knob
is on 'HI'; wall
switch / thermostat
is on.
Pilot will not light.
THERMOPILE
PILOT
BURNER
THERMO-
COUPLE
ELECTRODE
Main burner goes
out; pilot stays on.
WS-415-112 / 06.18.99
,
PURGE YOUR UNIT AND INITIALLY LIGHT THE PILOT AND THE MAIN BURNER WITH THE GLASS DOOR REMOVED
PROBLEM PROBLEM PROBLEM PROBLEM PROBLEM
Gas piping is undersized.
System is not correctly
purged.
Out of propane gas.
Pilot flame is not large
enough
Pilot flame is not engulfing
the thermocouple.
Thermocouple shorting /
faulty.
Faulty valve.
Themostat or switch is de-
fective.
Wall switch wiring is defec-
tive.
Main burner orifice is plugged.
Faulty valve.
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 resis-
tance in the system.
Faulty thermostat or switch.
TEST SOLUTION TEST SOLUTION TEST SOLUTION TEST SOLUTION TEST SOLUTION
- 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 pip-
ing.
- purge the gas line.
- fill the tank.
- turn up the pilot flame.
- gently twist the pilot head to improve the flame pattern around the
thermocouple.
- loosen and tighten thermocouple.
- clean thermocouple and valve connection.
- replace thermocouple.
- replace valve.
- replace.
- connect a jumper wire across the wall switch terminals; if main
burner lights, replace switch / thermostat.
- connect a jumper wire across terminals 1 & 3; if the main burner
lights, check the wires for defects and / or replace wires.
- remove stoppage in orifice.
- replace.
- 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.
.