A climate control system for the passenger compartment of a motor vehicle

A climate control system (1) includes a compressor (2) with its output (2b) connected to the intake of a condenser (3) upstream of fluid-expansion means (4) and an evaporator (5) with its output connected to the suction intake (2a) of the compressor (2). An electric pressure sensor (8) is arranged near the condenser (3). An electronic control unit (10) is provided to control the operation of the compressor (2) and any other devices (9) in the system in dependence on pressure signals emitted by the sensor (8) and on the temperature outside the vehicle, and in particular in order to control periodic interruptions in the operation of the compressor (2) and, while the compressor (2) is inactive, to receive the signal from the said pressure sensor (8) and to process it and thereby indicate the temperature outside the vehicle.