What Causes the BMW Air Conditioning Compressor Not to Start?
1 Answers
Refrigerant being too much or too little, excessive impurities in the system, or air in the air conditioning refrigeration system. Below are the specific explanations: 1. Refrigerant being too much or too little: Both excessive or insufficient refrigerant can cause the car air conditioner to not cool. Excessive refrigerant is usually caused by overfilling during maintenance, as there is a specific requirement for the proportion of refrigerant volume in the air conditioning system. If the proportion is too high, it can affect heat dissipation, meaning more heat dissipation results in greater cooling capacity; conversely, less heat dissipation leads to smaller cooling capacity. 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, and the heat absorbed during evaporation in the evaporator will consequently reduce, leading to a decrease in cooling capacity. 2. Excessive impurities in the system: If there are too many impurities in the refrigerant and the refrigeration oil, it will inevitably clog the filter screen of the filter, reducing the refrigerant's flow capacity, increasing resistance, and decreasing the amount of refrigerant flowing to the expansion valve, thus resulting in insufficient cooling capacity.
