What are the reasons why the car air conditioner stops cooling after running for a while?
2 Answers
The reasons why the car air conditioner stops cooling after running for a while are: 1. Damage to the car air conditioner condenser; 2. Blockage of the air conditioner by foreign objects such as pollen or dirt particles; 3. Damage to the car air conditioner compressor; 4. Excessive use of in-car electrical devices leading to overload. The car air conditioner is designed to regulate and control the temperature, humidity, air cleanliness, and airflow inside the vehicle to an optimal state, providing a comfortable environment for passengers and reducing travel fatigue. The car air conditioning refrigeration system consists of components such as the compressor, condenser, receiver-drier, expansion valve, evaporator, and blower, all connected by copper or aluminum pipes and high-pressure rubber hoses to form a sealed system.
There are quite a few reasons why a car's air conditioning stops cooling after running for a while. The most common one is refrigerant leakage. When the Freon in the system is insufficient, it leads to intermittent cooling performance. The compressor could also be problematic - issues like clutch slippage or electromagnetic coil failure may allow it to work initially but stop supplying cold air after running for some time. Clogged condenser or evaporator can cause similar symptoms, as excessive dust accumulation leads to poor heat dissipation and triggers overheating protection shutdown. I once encountered this situation while driving, and it turned out to be loose pipe connections causing gas leakage. After repairs and refilling the refrigerant, it worked fine. Another possible cause is moisture in the AC system forming ice that blocks the expansion valve, causing the AC to automatically stop cooling after a few minutes of operation. I recommend regularly checking pipe connections for oil stains and performing professional cleaning to prevent dust buildup, which can help reduce the occurrence of such malfunctions.
