Kenmore 721.66464 - Manual (Page 21)

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 iong?
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.
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