Automatic temperature climate control

AUTOMATIC TEMPERATURE CLIMATE CONTROL

(from '98 version)

PRESENTATION

The climate control system used automatically controls temperature and ventilation re-circulating and directing flows. Therefore, the user can select the temperature required and the flow of air considered most comfortable. A specific ECU handles the operation of the system by controlling:

• air temperature at vents;
• fan speed;
• compressor activation (air cooling circuit)
• air re-circulation activation;
• “rapid defrosting” function.

The ECU sets the above mentioned parameters to bring the temperature of the passenger compartment to that required. The system controls are located outside the container housing the ECU.

The ECU receives information on internal and external temperature by means of:

• External air temperature sensors
• Upper mixed air temperature sensor
• Lower mixed air temperature sensor
• Passenger compartment air temperature sensor

According to the calculations made, the ECU sets the entry speed of the air in the compartment by means of:

• Electronic fan motor variator
• Fan motor

and the temperature of air entering the passenger compartment by means of:

• Mixing actuator
• Re-circulation flap actuator

Finally the ECU adjusts the flow of air to the vents according to user’s settings by means of the distribution actuator. If the conditions so require, the ECU also enables the air cooling and drying circuit by activating the air-conditioner compressor.

Spider Only: The ECU disables the cooling circuit if the top is open: this is signalled by a specific switch located on one of the side lock straps.