Cadillac 2002 DeVille, Owner'S Manual

Page: 206 / 426

3-4
Automatic Operation
AUTO: This button is used to select the automatic
operation of the climate control system. When the
automatic operation is active, AUTO will appear on
the display.
A sensor will control the air delivery mode. Air will
come from the floor, the instrument panel or windshield
outlets. The fan speed and use of air conditioning
will vary as the system maintains the selected
temperature setting.
Do not cover the electronic solar sensor located on top
of the instrument panel near the windshield. The sensor
is used by the automatic system to regulate temperature.
See “Electronic Solar Sensor” later in this section for
more information.
To find your comfort zone, start with the 75
_F (24_C)
setting and allow about 30 minutes for the system to
regulate. Turn the driver’s temperature knob to adjust
the temperature if necessary. If you choose 60
_F
(16
_C), the system will remain at that maximum cooling
setting and will not regulate fan speed. If you choose
90
_F (32_C), the system will remain at that maximum
heating setting and will not regulate fan speed. Choosing
either maximum setting will not cause the system to heat
or cool any faster.
In cold weather, when the system senses the need for
heat, the airflow will be directed out of the floor outlets.
As the interior temperature approaches the desired
setting, the fan speed will decrease. To maintain interior
comfort, the airflow may move to the instrument panel
air outlets and floor outlets (bi
-
level mode). On bright
sunny days in cold weather, the airflow may come out of
the instrument panel outlets in A/C mode to maintain
comfort and prevent stuffiness.
When the automatic setting is active, the air
conditioning compressor cycles when needed to cool the
air. If your vehicle is sitting out on a hot day and AUTO
is active, the air will first flow out of the floor outlets for
a few seconds. This is normal. This is to remove hot air
from the air outlets. As the air is cooled, the airflow will
move through the instrument panel outlets. If you start
your vehicle with the fan setting on HI, it will skip the
air conditioning purge and the system will be in
manual mode.