What are the reasons why a car's air conditioning cannot cool?

[StWeston]

The reasons why a car's air conditioning cannot cool: 1. Poor contact of the compressor terminals; 2. Too much dust, causing blockage of the internal pipes of the air conditioning system; 3. Leakage of the air conditioning refrigerant; 4. Power outage leading to the air conditioning not cooling; 5. The air conditioning automatically stops running due to temperature sensor detection; 6. Damage to the air conditioning flap. Solutions for a car's air conditioning not cooling: 1. Check the tightness of the compressor belt; 2. Check for oil stains at the hose connections of the air conditioning system; 3. Regularly clean the surface of the condenser; 4. Check the refrigerant level; 5. Replace the flap motor. The car air conditioning cooling system consists of a compressor, condenser, receiver-drier, expansion valve, evaporator, and blower.