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Pontiac 1998 Grand Prix Owner's Manual page 164

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Dual Zone Button Light
The dual zone button light indicates whether the system
is in single zone or dual zone operation. When there is
no desire for dual zone operation, push the lit dual zone
button to return to single zone operation. The dual zone
button light will go off.
The system will operate to achieve your comfort set
point as quick as possible. If you set the temperature for
60°F (16°C) or 90°F (32"C), the fan will
go
to it's
highest speed, unless you manually select
a lower
speed.
The system will maintain full cold or full hot operation
at these settings.
Cold Weather Example: When you start the vehicle in
cold
weather,
(below freezing) or
after
being parked
overnight. If your Driver Set Temperature is 73°F
(23°C) and you are in Full Automatic mode, the system
will automatically move the temperature doors to f u l l
hot. The blower will start out at a low speed and the
blower speed will increase 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
blower will decrease and the temperature door will
move to a cooler position to maintain your desired
comfort. As the cabin warms up or the
SUR
load
increases the system could switch to
air delivered to the
individual to the windshield and the floor (Defog mode).
Automatic Control
For the most efficient operation, you should set the
system temperature and press AUTO. The system will
select the best fan speed and airflow settings to keep you
comfortable. The
air
conditioning compressor will run if
the outside temperature is above 38
O F (3.3
"
C). You may
notice a delay of three to four minutes before the fan
comes on.
Driver's Temperature Knob
The left knob sets the temperature for the entire system
when the light on DUAL button isn't lit. If the light is
lit, the knob sets the temperature for the driver.
Turn
the
knob toward red (to the right) to raise the desired cabin
temperature. Turn it toward blue (to the left) to lower
the temperature. The display
will
show your selection
for a few seconds, then the outside temperature will
show or be displayed.
. x :
- J
-refs Temperature Knob
The right knob sets the desired cabin temperature for the
passenger and will automatically force the system into a
dual zone operation, lighting the dual zone button light.
Turn the right knob toward red (to the right) to raise the
temperature. Turn it toward blue (to the left) to lower
the temperature.
3-5

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