GE JVM1450 2 Owner's Manual page 28

Operating Instructions
Other Features Your Model May Have
Child Lock-Out
Vent Fan
Automatic Fan
28
You may lock the control
panel to prevent the
microwave from being
accidentally started or used
by children.
The vent fan removes
steam and other vapors
from surface cooking.
An automatic fan feature
protects the microwave
from too much heat rising
from the cooktop below it.
It automatically turns on at
low speed if it senses too
much heat.
To lock or unlock the
controls, press and hold
CLEAR/OFF for about
three seconds. When the
control panel is locked, an
"L" will be displayed to the
extreme right.
Press VENT FAN once for
high fan speed, twice for
low fan speed or a third
time to turn the fan off.
If you have turned the fan
on you may find that you
cannot turn it off. The fan
will automatically turn off
when the internal parts are
cool. It may stay on for 30
minutes or more after the
cooktop and microwave
controls are turned off.