What are the reasons for the Golf's air conditioning not cooling?

[DiCharlie]

Reasons for the Volkswagen Golf's air conditioning not cooling: 1. The compressor's drive belt is too loose, causing the air conditioning not to cool. 2. The condenser's heat dissipation capacity decreases, leading to a reduction in the air conditioning's cooling ability. 3. Issues with the refrigerant in the car's air conditioning system: The car's air conditioning system consists of multiple metal pipes with small gaps between them. Additionally, the drying bottle in the car's air conditioning system absorbs moisture and accumulates some refrigerant. Therefore, when the amount of refrigerant decreases to a certain extent, the car's air conditioning cooling capacity will decrease. 4. Excessive impurities in the refrigerant and refrigeration oil of the car's air conditioning: These can clog the filter screen of the filter, increasing the cooling effect's resistance and reducing the flow of refrigerant to the expansion valve, causing the car's air conditioning not to cool. 5. Air entering the car's air conditioning system: This causes excessive pressure in the refrigeration pipes and poor refrigerant circulation, which can also lead to insufficient cooling.