Trouble Shooting; Questions And Answers - Sears Kenmore 721.69211 Owner's Manual

QUESTIONS AND ANSWERS
Operation
Question
What is wrong when the oven light will not
glow 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 the beep 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?
Answer
There may be several reasons why the oven light will not glow.
Perhaps:
,f oCooking time has not been set.
,fuSTART has not been touched.
foThe light bulb is burned out.
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) only allow light to pass through. They do not let
microwave energy pass through.
The beep tells you that the setting is properly entered.
Like any other cooking appliance, it is possible to overcook food to
the point where the food creates smoke and even possibly fire
damage to the inside of the oven. It is always best to be near the
oven while it is in the cooking process.
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 This light is from the oven light which is located between the oven
outer case? 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.
-19-