Troubleshooting - Napoleon GVF42-1N Installation And Operation Manual

WARNING
!
• Always light the pilot whether for the fi rst time or if the gas supply has run out with the glass door open or removed.
• Turn off the appliance completely and let cool before servicing. Only a qualifi ed service person should service and
repair this electric appliance.
• Appliance may be hot, do not service until appliance has cooled.
• Do not use abrasive cleaners.
symptom
Flames are consistently too Appliance is over-fi red or
large or too small. underfi red.
SIT MILLIVOLT
Carboning occurs.
3
INSERT
2
PHOTO
1
OF VALVE
HERE
ROBERT SHAW
Air shutter improperly adjusted.
3
Carbon is being deposited Air shutter has become blocked.
on glass, logs, rocks,
Flame is impinging on the
2
media or combustion
glass, logs, rocks, media or
chamber.
combustion chamber.
1
Exhaust fumes smelled in Not enough combustion air.
room, headaches.
Not enough ventilation air.
Flame is impinging on the logs or
combustion chamber.
Main burner will not light; Inlet pressure too high.
or is slow to light, noisy
Pilot fl ame blowing off, missing
pilot.
thermopile.
Pilot is not functioning Pilot has been painted
properly.
Pilot goes out while Gas piping is undersized.
standing; Main burner is in
'OFF' position.
Pilot fl ame is not large enough.
problem
-
Check pressure readings:
Inlet pressure can be checked by turning screw (A) counter-clockwise
2 or 3 turns and then placing pressure gauge tubing over the test
point. Gauge should read as described on the chart below. Check that
main burner is operating on 'HI'. Outlet pressure can be checked the
same as above using screw (B). Gauge should read as described on
the chart below. Check that main burner is operating on 'HI'. AFTER
TAKING PRESSURE READINGS, BE SURE TO TURN SCREWS
CLOCKWISE FIRMLY TO RESEAL. DO NOT OVER TORQUE.
Leak test with a soap and water solution.
Pressure
* Maximum inlet
pressure not to
exceed 13"
- Return air shutter to specifi ed opening, see "venturi adjustment" section.
- Ensure air shutter opening is free of lint or other obstructions.
- Check that the logs are correctly positioned.
- Check for ceiling or oscillating fans that may be infl uencing the fl ame.
- Open air shutter to increase the primary air. See "venturi adjustment"
section.
- Check the input rate: check the manifold pressure and orifi ce size as
specifi ed by the rating plate.
- Increase fresh air supply. (Use one of the methods described in ANSI
Z223.1 / NFPA 54 or the applicable local code.)
- Increase fresh air supply. (Use one of the methods described in ANSI
Z223.1 / NFPA 54 or the applicable local code.)
- Check that the logs are correctly positioned.
- Open air shutter to increase the primary air. See "venturi adjustment"
section.
- Check the input rate: check the manifold pressure and orifi ce size as
specifi ed by the rating plate values.
- Adjust inlet pressure to ensure 7.0" W.C. (17.4mb) at gas valve for
natural gas and 13.0" W.C. (32.4mb) for propane.
- Using a piece of sandpaper or emery cloth remove the paint from the
pilot hood, ignitor and fl ame sensor.
- 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.
- ODS Burner requires checking.

11.0 troubleshooting

test solution
Natural Gas Natural Gas
(inches) (millibars)
* 7" 17.4mb
Inlet
(MIN. 4.5") (MIN. 11.2mb)
Outlet 3.5" 8.7mb
27.4
EN
Propane Propane
(inches) (millibars)
13" 32.4mb
(MIN. 11") (MIN. 27.4mb)
10" 24.9mb
31
W415-0379 / F / 06.11.18