Heating and air conditioning system
108
Heating and air conditioning system
Air conditioning system
Description
The air conditioning system is a combined cooling and
heating system. It makes it possible to optimally control
the air temperature at any season of the year.
Description of the air conditioning system
It is important for your safety and for your driving comfort that the air condi-
tioning system is operating properly.
The air conditioning system operates when switch ⇒page 109,
fig. 107 is pressed and the following conditions are met:
•engine running,
•outside temperature above +5 °C,
•blower switch switched on (positions 1 to 4).
If the cooling system is switched on, the temperature and air humidity
drops in the vehicle. The wellbeing of the occupants of the car is enhanced
as a result of this particularly at high outside temperatures and a high air
humidity. The system prevents the windows misting up during the cold
season of the year.
The heating effect is dependent upon the coolant temperature, thus full
heat output only occurs when the engine has reached its operating
temperature.
It is possible to briefly activate recirculated air mode in order to enhance
the cooling effect ⇒. Air at a temperature of about 5°C may flow out of the vents under certain
circumstances when the cooling system is operating. Lengthy and uneven
distribution of the air flow out of the vents (in particular at the leg area) and
large differences in temperature, for example when getting out of the
vehicle, can result in chills in sensitive persons.
The air inlet in front of the windscreen must be free of ice, snow or leaves
in order to ensure that the heating and ventilation systems operate prop-
erly.
After switching on the cooling
Condensation from the evaporator of the
air conditioning may drip down and form a puddle below the vehicle. This
is quite normal and not an indication of a leak!
Aeration of the vehicle when ignition is switched off*
On models fitted with power sliding/tilting roof with sollar cells, the fresh
air blower is automatically switched over to “solar mode ” if the sun ray's
are sufficient after switching off the ignition. The solar cells on the
sliding/tilting roof deliver power for the fresh air blower. This supplies the
interior of the car with fresh air.
For an optimum ventilation, the air outlet vents 3 and 4 must be opened
⇒ page 112.
The ventilation functions only when the sliding/tilting roof is closed.
WARNING
•For your own safety and that of other road users, ensure that all
the windows are free of ice, snow and misting. Please familiarize
yourself about how to correctly operate the heating and ventilation
systems, how to demist and defrost the windows, as well as with
the cooling mode.
ACAE
NKO B5 20.book Page 108 Monday, July 3, 2006 2:09 PM
Heating and air conditioning system 113
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
The desired interior temperature can also be achieved without switching
in the cooling system just by switching to fresh air mode.
For the sake of
the environment
When you economize on fuel, you also reduce pollutant emissions.
Operational problems
If the cooling system does not operate at outside temperatures higher
than +5 °C, there is a problem in the system. The reasons for this may be:
•The fuse of the air conditioning system is defective ⇒page 260.
Check the fuse, replace it if necessary.
•The cooling system has switched off automatically for a short time
because the coolant temperature of the engine is too hot.
If you are not able to rectify the operational problem yourself, or if the
cooling capacity decreases, switch the cooling system off. Contact a
specialist garage.
Climatronic* (automatic air conditioning)
Description
The Climatronic system is a combination of an automatic heating, fresh air
and cooling system which provides optimal comfort for the occupants of
the car.
The Climatronic maintains a constant temperature fully automatically,
once it has been set. This is achieved by automatically varying the temperature of the outflowing air, the blower stages and the air distribu-
tion. It is not necessary to manually alter the settings. The
automatic
mode ⇒ page 115 ensures maximum wellbeing of the occupants at all
times of the year.
Description of Climatronic system
The Climatronic can only operate if the following conditions are met:
•engine running,
•outside temperature above +5 °C,
•the button is not pressed.
If the Climatronic system is switched on, the temperature and air humidity
drops in the vehicle. The wellbeing of the occupants of the car is enhanced
as a result of this particularly at high outside temperatures and a high air
humidity. The system prevents the windows misting up during the cold
season of the year.
It is possible to briefly activate recirculated air mode in order to enhance
the cooling effect ⇒.
The heating effect is dependent upon the coolant temperature, thus full
heat output only occurs when the engine has reached its operating
temperature.
Puddle of water below car
After switching on the cooling Condensation from the evaporator of the
air conditioning may drip down and form a puddle below the vehicle. This
is quite normal and not an indication of a leak!
Switching over between degrees Celsius and degrees Fahrenheit
First of all press and hold the button ⇒page 114, fig. 110 and then
press the button . The temperature measuring unit appears in the
display.ECON
ECONAUTO
NKO B5 20.book Page 113 Monday, July 3, 2006 2:09 PM
