Mercury 1996 Sable Manual page 126

When in AUTO and weather conditions require
heat, air will be sent to the floor. But a feature is
included in your EATC to prevent blowing cold
air to the floor if the engine coolant is not warm
enough to allow heating. The EATC will direct
the airflow to the windshield at low fan speed.
In 3-1/2 minutes or less, the fan speed will start
to increase and the airflow will change to the
floor area.
When in AUTO and weather conditions require
cooling, the EATC will use outside air or
recirculated air, depending on the temperature
that is selected.
If unusual conditions exist (i.e., window fogging,
etc.), the six manual override buttons allow you
to select special air discharge locations. The fan
speed button allows you to adjust the fan speed
to suit your needs.
Temperature selection
The TEMP button at the upper left of the
Control is for temperature selection. The a side
of the TEMP button will increase the set
temperature and the b side of the TEMP button
will lower the set temperature. Pressing the
button and releasing it will change the set
temperature one degree. Holding either side of
the button in will rapidly change the
temperature setting in one degree increments to
either 65˚F (18˚C) or 85˚F (29˚C). Then, the set
temperature will jump 5˚F (3˚C) and stop at
either 60˚F (16˚C) which is maximum cooling or
90˚F (32˚C) which is maximum heating.
The average temperature range used is between
68˚F (20˚C) and 78˚F (26˚C). Changing the
temperature setting by several degrees outside
this range or overriding to 60˚ or 90˚F (16˚ or
32˚C) as described above will not speed up the
heating or cooling process.
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