Buick PARKAVENUE 1994 Manual page 137

Auto
AUTO is used when you
want the system to adjust
automatically to changes in
temperature. When the
system is set for automatic,
air will come from the floor
outlets, the instrument
panel outlets or windshield
outlets.
Fan speed will vary as the system gets to and maintains
the temperature setting you have selected (unless a
blower LO or HI button has been pushed).
To find your comfort zone, start with 75 AUTO, give
the car about
20
minutes to stabilize, and adjust the
temperature setting if necessary.
In cold weather the system will delay turning on the fan,
to avoid blowing cold air. The length of the delay
depends on engine coolant temperature, outside
temperature and time since the engine was last started.
Pushing a LO or HI blower button will override this
delay, and cause the fan to start.
To rid the system of stale air in warm weather, air will
come out of the floor outlets for a short time.
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