Weber GENESIS II LX Ensemble Guide page 37

GAS FLOW
SYMPTOM
• Grill does not reach desired temperature or heats unevenly.
• One or more of the burners fail to ignite.
• Flame is low when burner is on high position.
• Flames do not run the whole length of the burner.
• Burner flame pattern is erratic.
CAUSE
Fuel hose is bent or kinked.
Burner ports are dirty.
SYMPTOM
• Gas is smelled in conjunction with burner flames that appear yellow and lazy.
CAUSE
Spider screens on the burners are obstructed.
Checking the Components of the Electronic Ignition System
When turning the control knob you should hear a
ticking sound. If you cannot hear the ticking sound,
check the battery, then check the wires.
Checking the Battery
There are three potential issues with the battery that
supplies the power to your ignition module that need
to be checked:
1) Some batteries have a plastic protective wrap
around them. (Do not confuse this plastic with
the battery label.) Check that this plastic wrap is
removed.
2) Confirm that the battery is installed correctly (E).
3) If the battery is old, replace it with a new battery.
SOLUTION
Straighten fuel hose.
Clean burner ports. Refer to "Cleaning the
Burner Ports."
SOLUTION
Clean spider screens. Refer to "Cleaning the Spider
Screens" in the Product Care section. Also refer to
the illustrations and information in this section about
proper flame pattern and spider screens.
Checking the Wires
1) Make sure the ignition wires are properly attached
to the ignition module. The wire terminals are color
coded to correspond with the terminals on the
ignition module. The number of wires will vary per
model. Refer to Assembly Manual for details on
correct wire installation.
Proper Burner Flame Pattern
The burners in your grill were factory set for the
correct air and gas mixture. When the burners
are performing correctly, you will see a specific
flame pattern. The tips may occasionally flicker
yellow (A), with a descending light blue (B) to
dark blue flame (C).
Spider Screens
The combustion air openings of the burners (D)
are fitted with stainless steel screens to
prevent spiders and other insects from spinning
webs and building nests inside the burners.
Additionally, dust and debris can accumulate
on the outside of the spider/insect screen and
obstruct the oxygen flow to the burners.
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