GE PFE29PSDASS Manual page 100

Hands Free AutoFill
Industry First
Hands free auto fill uses 3 ultrasonic sensors to measure the height, width, volume
and shape of the container and will fill it to approximately 90% of its capacity.
Ultrasonic sensors work in much the same way as back-up sensors used on many
automobiles.
This system is operated by the LCD control and the door control board.
If there is a failure, the ultrasonic sensors and LCD control are replaced as an
assembly.
ULTRASONIC SENSORS
100
5/4/2012