Troubleshooting - Napoleon MALIBU PTM450RB Owner's Manual

BURNER - The burner is made from heavy wall 304 stainless steel, but due to the extreme heat and corrosive environment,
surface corrosion will occur. Use a brass wire brush to remove surface corrosion. Clean any blocked ports using an opened
paper clip. Do not enlarge the burner ports. Spiders and insects are attracted to the smell of propane and natural gas. The
burner is equipped with an insect screen on the air shutter, which will reduce the likelihood of
insects building nests inside the burner, but does not entirely eliminate the problem. The nest or
web will cause the burner to burn with a soft yellow or orange flame or cause a fire (flashback) at
the air shutter underneath the control panel. To clean the inside of the burner, it must be removed
from the gas grill. Remove the 2 screws located above the burner to the left and
right of the centre of the burner. Lift back of burner upwards to remove. Use a
flexible venturi tube cleaning brush to clean out the inside of the burner. Shake
any loose debris out of the burner, through the gas inlet. Ensure that the insect
screen is clean, tight, and free of any lint or other debris. Check also that the
valve orifices are clean. Do not enlarge the orifices. Re-install the burner.
Check that the valve enters the burner when installing. Replace burner cover
and mounting screws to complete installation.
ALUMINUM CASTINGS - Clean castings periodically with warm soapy water.
Aluminum will not rust, but due to high temperatures and weathering, oxidation can occur on aluminum surfaces. This
will appear as white spots on the castings. To refinish the castings, clean them and sand lightly with fine sandpaper. Wipe
surface to remove any residue, and paint with high temperature barbecue paint. Protect surrounding areas from over-spray.
Follow curing directions found on the can.

TROUBLESHOOTING

Problem
Low heat / Low flame when
valve turned to high.
Excessive flare-ups/uneven
heat.
Burners burn with yellow
flame, accompanied by the
smell of gas.
Flames lift away from burner,
accompanied by the smell of
gas, and possibly difficulties
in lighting.
Possible Causes
For propane - improper lighting
procedure.
For natural gas - undersized sup-
ply line.
For both gases - improper preheat-
ing.
Sear plates installed incorrectly.
Improper pre-heating.
Excessive grease and ash build up
on sear plates and in drip pan.
Possible spider web or other debris,
or improper air shutter adjustment.
Improper air shutter adjustment.
Solution
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.
Pipe must be sized according to installtion code.
Pre-heat grill with both main burners on high for 10 to 15
minutes.
Ensure sear plates are installed with the holes towards the
front, and the slots on the bottom. The group of five holes
must be in the centre of the grill. See assembly
instructions.
Pre-heat grill with both main burners on high for 10 to 15
minutes.
Clean sear plates and drip pan regularly. Do not line pan
with aluminum foil. Refer to cleaning instructions.
Thoroughly clean burner by removing. See general
maintenance instructions. Open air shutter slightly
according to combustion air adjustment instructions.
Close air shutter slightly according to combustion air
adjustment instructions.
Screw
9