Napoleon BGD90NT Operating Instructions Manual page 52

52
SYMPTOM
Main burner goes
out; pilot stays on.
Main burner goes
out; pilot goes
out.
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.
Pilot burning;
no gas to main
burner; gas
knob is on 'HI';
wall switch /
thermostat is on.
Pilot will not light.
PILOT
BURNER
THERMOCOUPLE
W415-0826 / B / 07.11.11
PROBLEM
Pilot fl ame is not large
enough or not engulfi ng
the thermopile.
Thermopile shorting.
Remote wall switch wire
is too long; too much
resistance in the system.
Faulty thermostat or
switch.
Refer to "MAIN BURNER
GOES OUT; PILOT
STAYS ON"
Vent is blocked
Vent is re-circulating
Flexible vent has become
disconnected from fi replace.
System is not correctly
purged.
Out of propane gas.
Pilot fl ame is not large
enough.
Pilot fl ame is not engulfi ng
the thermocouple
Thermocouple shorting /
faulty.
Faulty valve.
Thermostat or switch is
defective
Wall switch wiring is
defective.
Main burner orifi ce is plugged.
Faulty valve.
No spark at pilot burner.
THERMOPILE
Out of propane gas.
Spark gap is incorrect.
No gas at the pilot burner.
TEST SOLUTION
- Turn up the pilot fl ame.
- Replace pilot assembly.
- Clean thermopile connection to the valve. Reconnect.
- Replace thermopile / valve.
- Shorten wire to connect length or wire gauge.
- Replace.
- Check for vent blockage.
- Check joint seals and installation
- Re-attach to fi replace.
- Cap was not replaced.
- Purge the gas line.
- Fill the tank.
- Turn up the pilot fl ame.
- Gently twist the pilot head to improve the fl ame
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.
- 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.
- Remove stoppage in orifi ce.
- Replace.
- Check if pilot can be lit by a match.
- Check that the wire is connected to the push button igniter.
- Check if the push button igniter 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 (fi nger tight plus 1/4 turn).
- Check that the manual valve is turned on.
- Check the pilot orifi ce for blockage.
- Replace the valve.
- Call the gas distributor.
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