Chevrolet cavalier 2001 ユーザーズマニュアル

LEVEL: This setting brings in outside air and

directs it two ways. Some air is directed through the
instrument panel outlets. Most of the air is directed
through the floor ducts and a little to the defrost and side
window vents.

FLOOR: This setting sends most of the air

through the ducts near the floor. The rest comes out of
the defroster and side window vents.

DEFOG: This setting allows half of the air to 

go to the floor ducts and half to the defroster and side
window vents.

DEFROST: This setting directs most of the air

through the defroster and side window vents. Some of
the air goes to the floor ducts.

The left knob selects the force of air you want. 
Turn the knob clockwise to increase fan speed and
counterclockwise to decrease fan speed. To turn the fan
off, turn the mode knob all the way counterclockwise to
OFF. In any other setting, the fan will run continuously
with the ignition on. The fan must be on to run the air
conditioning compressor.