Buick 2001 Park Avenue Owner's Manual page 172

Automatic Operation
Press the AUTO button when you want the system to
automatically adjust to changes in the temperature.
When the system is set for automatic operation, air will
come from the floor, middle or windshield outlets
depending on the temperature inside the vehicle, the
outside temperature and sun load. Fan speed will vary as
the system gets to and maintains the comfort setting you
have selected through the use of the TEMP button.
To find your comfort setting, start with the system in
AUTO mode and the TEMP button adjusted to a display
of 75 _ F (24 _ C), give the vehicle about 20 minutes to
stabilize, and adjust your comfort setting if necessary, by
using the TEMP button. The display will show the
comfort setting, fan speed and airflow direction for a
few seconds, and then it will display the outside
temperature. If you choose the temperature setting of
60 _ F (15 _ C), the system will remain at the maximum
cooling setting and fan speed. If you choose the
temperature setting of 90 _ F (33 _ C), the system will
remain at the maximum heat setting and fan speed.
Choosing either maximum setting will not cause the
system to heat or cool any faster.
3-4
In cold weather, the system will delay turning the fan on
high, to avoid blowing cold air. The length of the delay
depends on the engine coolant temperature and the
outside temperature. Pushing the FAN, AIR FLOW or
FRONT buttons will override this delay, turn off the
AUTO setting and change the fan speed.
Manual Operation
You may also manually adjust the air delivery or
fan speed.
AIR FLOW: This button is used to change the direction
of the airflow. The airflow choices available are FLOOR,
-
FLOOR MID, MID and WINDSHIELD
If the system is set for AUTO, pressing the AIR FLOW
button will display the current airflow direction, the
comfort setting and the fan speed. Press the AIR
FLOW up or down button again to change the
direction of the airflow.
If the AIR FLOW up button is selected while in the
FRONT defrost mode, the system will direct the air
-
toward the mid position. If the AIR FLOW down button
is selected while in the FRONT defrost mode, the
system will direct the air toward the FLOOR, and the
FRONT defrost mode will cancel. Notice the arrows in
the display.
-
FLOOR.