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6. TROUBLESHOOTING
QUESTIONS AND ANSWERS
Question
Why is the oven light not on
during cooking?
Why does steam come out of
the air exhaust vent?
Will the microwave oven be
damaged if it operates empty?
Does microwave energy pass
through the viewing screen in
the door?
Why does a tone sound when a
pad on the control panel is
touched?
Can my microwave oven be
damaged if food is cooked for
too long?
When the oven is plugged into
wall outlet for the first time, it
might not work properly. What
is wrong?
Why do I see light reflection
around the outer case?
What are the various sounds I
hear when the microwave oven
is operating?
Answer
There may be several reasons why the oven light is not
on. Have you:
• Set a cooking time?
• Touched START?
Steam is normally produced during cooking.
The microwave oven has been designed to vent this
steam.
Yes. Never operate the oven empty or without the glass
turntable.
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.
The tone tells you that the setting has been entered.
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.
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.
This light is from the oven light which is located
between the oven cavity and the outer wall of the oven.
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.
Operation