Trouble Shooting Guide - Napoleon BGNV42N Installation And Operation Instructions Manual

TROUBLE SHOOTING GUIDE

B
EFORE ATTEMPTING TO TROUBLESHOOT
SYMPTOM
Main burner goes out; Pilot fl ame is not large enough or
pilot stays on. not engulfi ng the thermopile
Thermopile shorting
Remote wall switch wire is too
long; too much resistance in the
system.
Faulty thermostat or switch.
Vent safety switch has opened.
(Tripped)
Hi Limit switch has opened.
(Tripped)
Main burner goes out;
Refer to "MAIN BURNER GOES OUT; PILOT STAYS ON"
pilot goes out.
Faulty thermocouple.
Pilot goes out when the
System is not correctly purged.
gas knob is released.
Out of propane gas.
The gas valve has
Pilot fl ame is not large enough
an interlock device
Pilot fl ame is not engulfi ng the
which will not allow
thermocouple.
the pilot burner to be
lit until the thermo-
Thermocouple shorting / faulty.
couple has cooled.
Allow approximately
60 seconds for the
Faulty valve.
t h e r m o c o u p l e t o
cool.
Themostat or switch is defec-
Pilot burning; no gas
tive.
to main burner; gas
knob is on 'HI'; wall
Wall switch wiring is defective.
switch / thermostat
is on.
Main burner orifi ce is plugged.
Faulty valve.
Vent safety switch has opened.
(Tripped)
Hi Limit switch has opened. (Tripped)
Pilot will not light. No spark at pilot burner
Out of propane gas
Spark gap is incorrect
No gas at the pilot burner
Pilot goes out while Gas piping is undersized.
standing; Main burner
is in 'OFF' position.
,
PURGE YOUR UNIT AND INITIALLY LIGHT THE PILOT AND THE MAIN BURNER WITH THE GLASS DOOR REMOVED
PROBLEM
- turn up pilot fl ame.
- replace pilot assembly.
- clean thermopile connection to the valve. Reconnect.
- replace thermopile / valve.
- shorten wire to correct length or wire gauge.
- replace.
- Vent has become blocked or disconnected. Correct. See Figure 2.
- Unit has overheated. See Figure 2
- replace.
- purge the gas line with the glass door open.
- fi ll the tank.
- turn up the pilot fl ame.
- gently twist the pilot head to improve the fl ame pattern around the thermo-
couple.
- loosen and tighten thermocouple.
- clean thermocouple and valve connection.
- replace thermocouple.
- replace.
- connect a jumper wire across the wall switch terminals; if main burner lights,
replace switch / thermostat.
- disconnect 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.
- Vent has become blocked or disconnected. Correct. See Figure 2.
- Unit has overheated. See Figure 2
- 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.
- fi ll 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.
- turn on all gas appliances and see if pilot fl ame fl utters, diminishes or extin-
guishes, especially when main burner ignites. Monitor appliance supply working
pressure.
- check if supply piping size is to code. Correct all undersized piping.
TEST SOLUTION
13
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W415-0377 / E / 11.26.07