Automatic Climate Control - Porsche 92854 Owner's Manual

Automatic climate control

This system automatically controls the air flow
distribution and the temperature level inside
the car according to the occupants wishes.
T h e distribution and mixture of cool and warm
air is electrically regulated and kept constant,
regardless of weather conditions.
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The heater works only when the engine is
running. Maximum heating output and fast
defrosting can be obtained only after the
engine has reached operating temperature.
Servomotor-controlled air mixing valves auto-
matically mix the cold and warm air.
The temperature inside the vehicle (tempera-
ture sensor behind the screen mask) and out-
side the vehicle (temperature sensor in the
wheel box) are used for quick identification of
temperature fluctuations and control of the
servomotor.
"AC" pressure switch
W h e n the weather is warm, supplying of fresh
air is not always enough to attain the desired
temperature within the car.
First set the temperature desired using the
temperature l e v e r . Then switch on the a i r con-
ditioner by pressing the AC switch in the center
console (arrow).
If no cooling o f the air is required in transitional
or colder seasons, the air conditioner should
not be switched on due to considerations of
fuel economy.
With sudden fluctuations in temperature, the
automatic system regulates the control of
warm air, fresh air, and, if the air conditioner
compressor has been switched on, the supply
of cooling air until the preset inside tempera-
ture is reached.
The air conditioner works only when the en-
gine is running. The higher the engine rpm,
the more intensive the cooling effect. Air from
inside the car is drawn through the evaporator
for cooling and then reenters the car interior
through the air outlets.
Proper operation of the air conditioner is gua-
ranteed only if the windows and roof are closed
and the outlet nozzles at the side and the cen-
ter are fully opened.
If the vehicle has been standing for a fairly long
time in intense sunlight, it is recommended
that the inside of the vehicle be thoroughly
ventilated by opening the car windows and
switching on the air conditioner.
W h e n the a i r conditioner is switched on, addi-
tional cooled air reaches the glove compart-
ment through a nozzle.
In damp weather it is recommended to switch
on the air conditioner, even if the outside tem-
perature is low. This dehumidifies the air and
prevents the windshield from fogging up.