GE Spacemaker JVM1740DM User Manual page 28

Operating Instructions
Other Features Your Model May Have
Beeper Volume
Vent Fan
Automatic Fan
28
(On some models)
The beeper sound level
can be adjusted. Press
BEEPER VOLUME.
Choose 0–3 for mute
to loud.
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
if it senses too much heat.
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.