Why did the Buick Excelle's air conditioning suddenly stop cooling?

[Graham]

Reasons why the Buick Excelle's air conditioning suddenly stops cooling: 1. No air or low air volume from the air conditioning; check if the air filter is dirty, if the blower can operate normally, and if the air conditioning flap motor can switch properly; 2. The Freon in the air conditioning system is not within the standard range; 3. The radiator condenser is dirty, or the engine cooling system has a fault, leading to excessively high water temperature, such as the cooling fan not working, resulting in poor heat dissipation of the radiator and condenser; 4. Sensor malfunctions, such as the air conditioning pressure sensor or evaporator box sensor, leading to incorrect adjustments when the air conditioning system regulates; 5. Damage to the air conditioning compressor adjustment solenoid valve; 6. Faults in the air conditioning system wiring or control unit. If the car's air conditioning is not cooling, it is advisable to choose a relatively professional repair institution for inspection and repair, such as the brand's 4S store or a specialized repair shop, and select the repair institution based on your actual situation.