3309924 - E6020 AIR CONDITIONING - Description (Euro 3)

Description

An automatic system manages the climate control in the passenger compartment, i.e. temperature and ventilation, with recirculation and air flow orientation.

A dedicated control unit manages system operation by controlling:

• air temperature at outlets;
• fan speed;
• air distribution;
• activation of the compressor (air refrigeration circuit);
• activation of air recirculation;

The control unit sets the above parameters in order to adjust passenger compartment temperature to the required level.The control unit supplies information on interior and exterior temperature via special sensors.After processing the information, it adjusts passenger compartment air intake speed by means of the fan motor and air temperature by a mixer actuator. It also controls interior air recirculation via a specific actuator.When required, the ECU automatically activates the cooling circuit and dehumidifies the air by operating the air conditioner compressor (see E6021 COMPRESSOR ACTIVATION).In addition to the climate control commands described above, the climate control system also comprises the solar radiation sensor located in the middle at the base of the windscreen; This sensor prevents temperating rises in the passenger compartment due to solar radiation. As a result of this, special measures are adopted to improve climatic comfort in the car.For further details, see DESCRIPTION AND OPERATION 5040.The control unit supply lines are protected by a fuse in the junction unit.The fan supply line is protected by a special maxifuse.The system will only operate when the ignition is turned ON.