Why is the Buick Excelle's air conditioning not cooling?

[FaithDella]

Reasons for the Excelle's air conditioning not cooling: 1. Lack of refrigerant: A lack of refrigerant is a normal condition, not a malfunction. The air conditioning won't completely fail to cool but will perform poorly. However, this situation should be relatively rare because refrigerant is not a consumable. Unless the vehicle has been involved in a severe rear-end collision or had its air conditioning pipelines or other components disassembled, affecting the sealing, the refrigerant won't deplete on its own. 2. Internal damage to the air conditioning pump: Such as damage to the piston rings inside the air conditioning pump or damage to the clutch plate, etc. This can prevent the air conditioning pump from functioning, thus failing to initiate the cooling effect. Generally, damage to the air conditioning pump will produce abnormal noises. 3. Compressor damage: When the compressor is damaged, it may stop working or the pressure difference in the high and low-pressure pipelines becomes very small. This situation can lead to the air conditioning not cooling.