Napoleon PRESTIGE II 450 Installation And Operating Instructions Manual page 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.)
Possible Causes
Lack of gas.
Supply hose is pinched.
Dirty or clogged orifice.
Spider webs or other matter in venturi
tube.
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.
Solution
Check gas level in propane cylinder.
Reposition supply hose as necessary.
Clean burner orifice.
Clean out venturi tube.
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.
www.napoleongrills.com
13