ad blue BUICK CENTURY 2000 Owner's Manual

3-3
BI-LEV: This setting brings in outside air and directs
it two ways. Half of the air is directed through the
instrument panel outlets. Most of the remaining air is
directed through the floor ducts and a little to the defrost
and side window vents.
HTR: This setting sends most of the air through the
ducts near the floor. The rest comes out of the defroster
and side window vents.
BLEND: This setting allows half of the air to go 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). (Even when the
compressor is running, you can control the temperature.)
DEF: This setting directs most of the air through
the defroster and side window vents. Some of the air
goes to the floor ducts and the side window vents.
The air conditioning compressor will run automatically
in this setting unless the outside temperature is below
40
F (4
C). (Even when the compressor is running,
you can control the temperature.)
A/C: Press this button to turn the air conditioning
on and off. The system will cool and dehumidify the air
inside the vehicle when the A/C light is on.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.
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 lever's 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 lever's in the blue area. The system will
bring in outside air and cool it.

3-5
Setting the temperature to 60
F (15
C) 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.
Passenger's Temperature 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.Hot Weather Example: When you start the vehicle in
hot weather, 80F (27C) or after being parked during
the day in full sun, if your driver set temperature is 75F
(23C) and you are in full automatic mode, the system
will automatically move the temperature to full cold.
The fan will be at low speed momentarily and then go
to the high speed. The air intake will be recirculated for
maximum cooling performance. As the interior of the
vehicle cools down to your desired comfort point, the fan
speed will decrease and the temperature will move to a
warmer position to maintain your desired comfort. As the
interior cools down or the sun load decreases the system
could switch to air delivered to A/C vents and the floor.
Cold Weather Example: When you start the vehicle in
cold weather, (below freezing) or after being parked
overnight. If your Driver Set Temperature is 75F (23C)
and you are in Full Automatic mode, the system will
automatically move the temperature doors to full hot.
The fan will start out at a low speed and will increase to
a higher speed as the engine warms up. The air will be
delivered to the floor. As the interior of the vehicle
warms up to your desired comfort point, the fan speed
will decrease and the temperature will move to a cooler
position to maintain your desired comfort. As the cabin
warms up or the sun load increases the system could
switch to air delivered to the windshield and the floor
(DEFOG mode).