What are the reasons for poor cooling effect in Audi?

[LeLaura]

Audi air conditioner sometimes cools and sometimes does not cool because there is a problem with the amount of refrigerant. The specific reasons are as follows. Insufficient cooling caused by excessive refrigerant: Excessive refrigerant is usually caused by overfilling during maintenance, as the proportion of refrigerant in the air conditioning system has specific requirements. If the proportion is too high, it will affect the heat dissipation, meaning more heat dissipation leads to greater cooling capacity; conversely, less heat dissipation results in lower cooling capacity. Similarly, adding too much cooling oil during maintenance can also reduce the heat dissipation of the refrigeration system. Insufficient refrigerant causing inadequate cooling: The main reason for insufficient refrigerant is usually minor leaks in the system. If there is insufficient refrigerant in the air conditioning system, the amount of refrigerant sprayed into the evaporator from the expansion valve will also decrease. As a result, when the refrigerant evaporates in the evaporator, the amount of heat absorbed will decrease, leading to a reduction in cooling capacity.