Buick 1994 Roadmaster Owner's Manual page 132

From the AUTO mode, pushing the temperature to
90°F will automatically allow the system to select the
high blower and floor mode.
From AUTO mode, pushing the temperature to 60°F
will automatically allow the system to select high
blower, MIDDLE mode and recirculate air.
Off
When the system is off, the
'
ventilation allows air to
flow 'through the heater
ducts while the vehicle is
moving.
The exterior temperature will show in the display area.
Auto
When the system is set for
automatic, air will come
from the floor outlets, the
instrument panel. outlets or
both. Fan speed will 'vary
(unless a blower LO or HI
button has been pushed) as
the system gets to and
maintains the temperature
"
setting you have selected.
The display will show the selected temperature and
blower speed.
In cold weather the system will delay turning on the
blower, 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 turn on
the
blower.