ad blue BUICK CENTURY 2002 Owner's Manual

3-6
PASSENGER Control: The PASSENGER CONTROL
buttons with the arrows adjust the temperature on the
passenger's side so it is warmer or cooler than the
temperature for the driver's side. Push the DUAL button
so that the indicator light is lit. Press the right arrow
button to raise the temperature. Press the left arrow
button to lower the temperature.
The display will not show the passenger's temperature,
only that of the driver. Indicators in the passenger
control section will show passenger's side temperature
relative to the driver's set temperature.

The amber light indicates the same temperature as
set for the driver.

The red lights indicate a warmer temperature than
that of the driver.

The blue lights indicate a cooler temperature than
that of the driver.
AUTO (Automatic Control): For the most efficient
operation, you should set the system temperature and
press AUTO. The system will then select the best fan
speed and airflow settings to keep you comfortable. The
air conditioning compressor will run if the outside
temperature is above 40F (4C). You may notice a
delay of two to three minutes before the fan comes on at
start up in cool weather.For the automatic system to function, the temperature
must be set between 61F (16C) and 89F (31C).
The driver's temperature and passenger's temperature
settings will be automatically maintained even if manual
overrides have been selected except for settings at
60F (15C) and 90F (32C).
Setting the temperature to 90F (32C) will lock
control in full hot, direct air to the floor, and increase
the fan speed to high. The system will not return to
automatic temperature control until the temperature
setting is lowered.
Setting the temperature to 60F (15C) will lock
control in full cold, recirculate interior air, direct air
to outlets on panel and increase blower speed to high.
The system will not return to automatic temperature
control until the temperature setting is raised.
OFF: Press this button to turn the air compressor off.
Heating
On cold days, use HTR with the driver and passenger
levers all the way in the red area. This system will bring
in outside air, heat it, and send it to the floor ducts.

3-7 Heating (Engine Coolant Heater)
If your vehicle has an engine coolant heater, you can use it
to help your system provide warm air faster when it's cold
outside
-- 0
F (-18
C) or lower. An engine coolant heater
warms the coolant your engine and heating system use to
provide heat. See ªEngine Coolant Heaterº in the Index.
Air Conditioning
On very hot days, open the windows long enough to let
hot, inside air escape. This reduces the time for the
vehicle to cool down.
For a quick cool
-down on very hot days, use MAX with
the temperature levers all the way in the blue area. If
this setting is used for long periods of time, the air in
your vehicle may become too dry.
For normal cooling on hot days, use VENT with the
temperature levers in the blue area. The system will
bring in outside air and cool it.
On cool, but sunny days, the sun may warm your upper
body, but your lower body may not be warm enough.
You can use BI
-LEV and set the temperature levers to a
comfortable setting. The system will bring in outside air
and direct it to your upper body, while sending slightly
warmed air to your lower body. You may notice this
temperature difference more at some times than others.
Push the A/C button for cooling.
Defogging and Defrosting
If you have the Dual Comfortemp Climate Control, your
system has two settings for clearing the front and side
windows. To defrost the windows quickly, turn the mode
knob to the defrost setting and turn the temperature knob
all the way in the red area.
For maximum defroster performance, set both driver and
passenger temperature controls to the warmest setting.
To warm passengers while keeping the windows clear,
use BLEND.
If you have the Dual Automatic Comfortemp Climate
Control, your system has two settings for clearing the front
and side windows. To defrost the windows quickly, press
the FRONT button, set the temperature to 90
F (32
C),
select high fan speed and turn the DUAL button off. To
warm passengers while keeping the windows clear, push
the AIR FLOW button until WINDSHIELD/FLOOR
appears in the display. Select fan speed for comfort and
windshield clearing performance.