Buick 2001 Century Owner's Manual page 152

Manual Control
If you prefer to manually control the heating, cooling and
ventilation in your vehicle, you can select airflow direction,
fan speed, outside or recirculated air, air compressor and
temperature operation with the following:
AIR FLOW: This control has several settings to control
the direction of airflow when the system is not in AUTO.
To access the various modes available, continue to press
the AIR FLOW rocker button up or down until the
desired mode appears in the display:
WINDSHIELD/FLOOR: This setting directs half of
the air to the floor ducts and half to the defroster and
side window vents. The air conditioning compressor
will run automatically in this setting unless the outside
temperature is below 40 _ F (4 _ C).
MID/FLOOR: This setting directs half of the air
through the instrument panel outlets. Most of the
remaining air is directed through the floor ducts and
a little to the defroster and side window vents.
MID: This setting directs air through the instrument
panel outlets.
3-6
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. When in this setting
and the RECIRC setting, the windows can fog up.
See "RECIRC" in the Index.
FRONT: This setting brings in outside air
and directs most of the air through the defrost vent.
Some of the air also goes to the floor ducts and the side
window defogger outlets. The indicator on the button
will light and WINDSHIELD will be lit in the display.
The air conditioning compressor will run automatically
in this setting unless the outside temperature is below
40 _ F (4 _ C).
VENT: This setting turns the air conditioning
compressor on and off. The indicator is lit when the
compressor is turned off. Recirculation is not permitted
when the compressor is off. The system will try to
control the temperature automatically, but without
the compressor.
VENT is not permitted in FRONT defrost mode. If the
VENT button is pushed while in FRONT defrost mode,
the indicator will light briefly and then turn off.