2000 Pontiac Bonneville Owner's Manual - Page 166

2000 Pontiac Bonneville Manual

Page 166 highlights

Automatic Operation When the system is set for AUTO, your climate control system will control the air delivery mode, fan speed, A/C and RECIRC operations. Air will come from the floor, panel or windshield outlets. The fan speed will vary as the system maintains the selected temperature setting. When AUTO is selected, the A/C operation and air inlet will be automatically controlled. The air conditioning compressor will run at outside temperatures over approximately 40_F (4_C). The air inlet will normally be set to outside air. If it's hot outside, the air inlet will automatically switch to recirculated inside air to help quickly cool down your vehicle. To find your comfort zone, start with 75_ F (24_C) temperature setting and allow about 20 minutes for the system to regulate. Turn the TEMP knob up or down to adjust the temperature setting if necessary. 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. Be careful not to cover the sensor located on the top of the instrument panel near the windshield. This sensor regulates temperature based on sun load. The EXT (exterior) temperature sensor is located in the front of the vehicle behind the grille. The displayed temperature is most accurate after the vehicle has been moving for a few minutes. If the vehicle is stopped and then restarted within 2 1/2 hours, the sensor will be hot from the engine heat. In this case, the temperature first displayed will continue to be the previous temperature. The display will update after the vehicle has been moving for a few minutes and the sensor has a chance to cool down to the actual temperature. To avoid blowing cold air in cold weather, the system will delay turning on the fan until warm air is available. The length of delay depends on engine coolant temperature. Pushing the fan button will override this delay and change the fan to a selected speed. 3-6

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3-6
Automatic Operation
When the system is set for AUTO, your climate control
system will control the air delivery mode, fan speed,
A/C and RECIRC operations. Air will come from
the floor, panel or windshield outlets. The fan speed
will vary as the system maintains the selected
temperature setting.
When AUTO is selected, the A/C operation and air inlet
will be automatically controlled. The air conditioning
compressor will run at outside temperatures over
approximately 40
F (4
C). The air inlet will normally
be set to outside air. If it’s hot outside, the air inlet will
automatically switch to recirculated inside air to help
quickly cool down your vehicle.
To find your comfort zone, start with 75
F (24
C)
temperature setting and allow about 20 minutes for the
system to regulate. Turn the TEMP knob up or down to
adjust the temperature setting if necessary. 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.
Be careful not to cover the sensor located on the top of
the instrument panel near the windshield. This sensor
regulates temperature based on sun load.
The EXT (exterior) temperature sensor is located in the
front of the vehicle behind the grille. The displayed
temperature is most accurate after the vehicle has been
moving for a few minutes. If the vehicle is stopped and
then restarted within 2 1/2 hours, the sensor will be hot
from the engine heat. In this case, the temperature first
displayed will continue to be the previous temperature.
The display will update after the vehicle has been
moving for a few minutes and the sensor has a chance
to cool down to the actual temperature.
To avoid blowing cold air in cold weather, the system
will delay turning on the fan until warm air is available.
The length of delay depends on engine coolant
temperature. Pushing the fan button will override this
delay and change the fan to a selected speed.