Automatic climate control
WARNING
Familiarize yourself thoroughly with the
proper use and function of the ventila-
tion/heating, defogging/defrosting and the
air conditioning system.
For safe driving it is extremely important that
you follow the operating instructions in this
manual. If in doubt, consult with your
Porsche dealer.
Maximum heating output and fast defrosting
can be obtained only after the engine has
reached normal operating temperature.
This system automatically controls the air flow
distribution and the temperature level inside the
car according to the occupants wishes. The dis-
tribution and mixture of cool and warm air is
electrically regulated and kept constant, regard-
less of weather conditions.
Servomotor-controlled air mixing valves automat-
ically mix the cold and warm air.
The temperature inside the vehicle (temperature
sensor behind the screen mask) and outside the
vehicle (temperature sensor in the wheel box)
are used for quick identification of temperature
fluctuations and control of the servomotor.
"AC" pressure switch
When 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 lever. Then switch on the air condi-
tioner by pressing the AC switch in the center
console (arrow).
If no cooling of 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 compres-
sor has been switched on, the supply of cooling
air until the preset inside temperature 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
guaranteed only if the windows and roof are
closed and the outlet nozzles at the side and
the center 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.
When the air conditioner is switched on, addi-
tional cooled air reaches the glove compartment
through a nozzle.
In damp weather it is recommended to switch
on the air conditioner, even if the outside
temperature is low. This dehumidifies the air and
prevents the windshield from fogging up.
56
Содержание 928 GTS 1994
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