Why is the cold air in Baojun 730 not cooling?

[OGabriel]

There may be several reasons why the cold air in Baojun 730 is not cooling: 1. Refrigerant issues: The car's air conditioning system consists of multiple metal pipes with small gaps between them, leading to slight refrigerant leakage. Additionally, the dryer in the system absorbs moisture and retains some refrigerant. When the refrigerant level drops below a certain point, the cooling capacity of the air conditioning system decreases. In some models with dual-zone air conditioning, insufficient cooling may result in warm air blowing from the vents. 2. Excessive contaminants in the compressor oil: This can clog the filter screen, reducing cooling efficiency, increasing resistance, and decreasing the flow of refrigerant to the expansion valve, resulting in poor cooling. Sometimes, if air enters the air conditioning system, it can cause high pressure in the refrigerant lines, leading to poor refrigerant circulation and insufficient cooling. 3. Problems with the dryer: The main function of the dryer is to absorb moisture from the refrigerant to prevent reduced cooling capacity due to excessive moisture. When the desiccant in the dryer becomes saturated, it can no longer filter out moisture. As the refrigerant passes through the expansion valve's orifice, the drop in pressure and temperature can cause the moisture in the refrigerant to freeze, obstructing the flow of refrigerant, increasing resistance, or even completely blocking it.