What's the reason for the high pressure in car air conditioning not moving?

[LaMiranda]

This phenomenon is mostly caused by the closing of the expansion valve or blockages in areas such as the dryer filter. Below is the relevant introduction: 1. Car Air Conditioning: The car air conditioning device, referred to as car air conditioning, is used to adjust and control the temperature, humidity, air cleanliness, and air flow within the car cabin to an optimal state. It provides a comfortable riding environment for passengers, reduces travel fatigue, and creates good working conditions for the driver, playing an important role in ensuring safe driving. 2. Dryer Filter: The dryer filter primarily serves the function of filtering impurities. Generally, the specifications of the dryer, such as diameter, inner diameter, outer diameter, and internal components, are determined based on the refrigeration system of the air conditioning unit.