Climate control

With the help of the air conditioning system, the temperature in the passenger compartment can drop below the ambient temperature. With a fully automatic system, any set temperature is maintained, and the distribution of air and its quantity are controlled by an electronic control unit, regardless of vehicle speed: various temperature sensors inform the control unit about the ambient temperature and the temperature in the passenger compartment. According to the programmed values, the air damper actuators and the fan are controlled, thus maintaining the interior climate. Malfunctions of the control unit, sensors and actuators are stored in the memory of the diagnostic device of the control unit. For diagnosis, contact a workshop with appropriate diagnostic equipment.

Air conditioner operation

The air conditioning compressor is driven by a V-ribbed belt from the crankshaft. It increases the pressure in the refrigerant line to 30 bar, which heats up the refrigerant. In the condenser, the flowing air absorbs heat (cooling air stays outside), so that the hot refrigerant (gas) cools and condenses. The refrigerant becomes liquid. It enters under high pressure to the throttle, which reduces the pressure. In this case, the refrigerant evaporates into the line and at the same time is strongly cooled. In the evaporator, the refrigerant receives heat from the passing air. The air is thus cooled. This cold air now enters the interior of the car. Due to the heat absorbed in the evaporator, the refrigerant becomes gaseous and flows at low pressure to the compressor. There the process is repeated.

Attention: Operations for repairing the air conditioner are not described, because they need to be produced only in the workshop. In addition, the refrigerant line must not be opened, as If the refrigerant comes into contact with the skin, it may cause frostbite.