Napoleon PRESTIGE V 450 Manual page 13

13
Problem
Burner output on "high" setting
is too low. (Rumbling noise and
fluttering blue flame at burner
surface.)
Infrared burner (if equipped)
flashes back (during operation
the burner abruptly makes a
loud "whoosh" sound, followed
by a continuous blow-torch type
sound and grows dim.)
Pilot will not light.
(if equipped)
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Possible Causes
Lack of gas.
Supply hose is pinched.
Dirty or clogged orifice.
Spider webs or other matter in venturi
tube.
Propane regulator in "low flow" state.
Ceramic tiles overloaded with grease
drippings and build-up. Ports are clogged.
Burner overheated due to inadequate
ventilation (too much grill surface covered
by griddle or pan.)
Cracked ceramic tile.
Leaking gasket surrounding the ceramic
tile, or a weld failure in the burner
housing.
Lack of gas.
Obstruction in pilot orifice.
Electrode wire loose or off.
Dirty pilot electrode.
Pilot is actually lit.
Solution
Check gas level in propane cylinder.
Reposition supply hose as necessary.
Clean burner orifice.
Clean out venturi tube.
Ensure lighting procedure is followed carefully. All
gas grill valves must be in the off position when the
tank valve is turned on. Turn tank on slowly to allow
pressure to equalize. See lighting instructions.
Turn burner off and allow to cool for at least two
minutes. Relight burner and burn on high for at least
five minutes or until the ceramic tiles are evenly glowing
red.
Ensure that no more than 75% of the grill surface is
covered by objects or accessories. Turn burner off and
allow to cool for at least two minutes, then relight.
Allow burner to cool and inspect very closely for
cracks. If any cracks are found, contact your authorized
Napoleon dealer to order a replacement burner
assembly.
Contact your authorized Napoleon dealer for
instructions on ordering a replacement burner
assembly.
After turning pilot knob to high, wait approximately
20-30 seconds for air to purge the gas supply line while
pressing igniter. Fill propane cylinder. During initial
set-up or after tank has been refilled, it is best to light
one of the tube burners before lighting the pilot burner.
This enables the gas to reach the valves on the manifold
more quickly.
Clean pilot orifice.
Replace lead wire.
Clean pilot electrode.
The pilot flame, especially on natural gas units is very
difficult to see. Place your hand 1 in. (2.5 cm) above grill
surface over the pilot burner to feel for heat.