Troubleshooting; Frequently Asked Questions - LG LMC0975 Series User Manual

28 TROUBLESHOOTING

TROUBLESHOOTING

Frequently Asked Questions

Operation
Why is the oven light not on during cooking?
There may be several reasons why the oven light is
not on.
Have you:
• Set a cooking time?
• Touched START?
Why does steam come out of the air exhaust
vent?
Steam is normally produced during cooking. The
microwave oven has been designed to vent this
steam.
Will the microwave oven be damaged if it operates
empty?
Yes. Never operate the oven empty or without the
glass turntable.
Does microwave energy pass through the viewing
screen in the door?
No. The metal screen bounces the energy back to
the oven cavity. The holes (or ports) allow only light to
pass through. They do not let microwave energy pass
through.
Why does a tone sound when a pad on the control
panel is touched?
The tone tells you that the setting has been entered.
Can my microwave oven be damaged if food is
cooked for too long?
Like any other cooking appliance, it is possible to
overcook food to the point that the food creates
smoke and even possibly fire, and damage to the
inside of the oven. It is always best to be near the
oven while you are cooking.
When the oven is plugged into the wall outlet for
the first time, and it does not work properly. What
is wrong?
The microcomputer controlling your oven may
temporarily become scrambled and fail to function
as programmed when you plug in for the first time
or when power resumes after a power interruption.
Unplug the oven from the 120 volt household outlet
and then plug it back in to reset the microcomputer.
Why do I see light reflection around the outer
case?
This light is from the oven light which is located
between the oven cavity and the outer wall of the
oven.
What are the various sounds I hear when the
microwave oven is operating?
The clicking sound is caused by a mechanical switch
turning the microwave oven's magnetron ON and
OFF.
The heavy hum and clunk is from the change in
power the magnetron draws as it is turned ON and
OFF by a mechanical switch. The change in blower
speed is from the change in line voltage caused by
the magnetron being turned ON and OFF.