Kenmore ELITE 721. 7920 - Manual (Page 22)

TROUBLESHOOTING
QUESTIONS AND ANSWERS
Operation
Question Answer
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 1 20 volt household outlet and then plug it back in to reset
the microcomputer.
Why do 1 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 1 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.
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