What is the reason why the car air conditioner cools at low speed but not at high speed?
1 Answers
The following are the reasons why the car air conditioner does not cool when driving at high speed:1. Insufficient refrigerant: Insufficient or too little refrigerant in the car air conditioner can cause the air conditioner not to cool. 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, affecting the evaporation process in the evaporator.2. Moisture infiltration: If moisture enters the air conditioning refrigeration system, it can cause insufficient cooling or no cooling at all. In such cases, the desiccant or dryer in the car air conditioner needs to be replaced. Additionally, the system should be evacuated and recharged with an appropriate amount of new refrigerant.