What are the reasons for a car's air conditioning suddenly not cooling?
3 Answers
The reasons for a car's air conditioning suddenly not cooling are: 1. Insufficient or too little refrigerant, or minor leakage of refrigerant; 2. Excessive refrigerant; 3. Loose drive belt of the car's air conditioning compressor; 4. Excessive impurities in the refrigerant and refrigerant oil; 5. Use of unqualified refrigerant and refrigerant oil; 6. Moisture infiltration into the refrigeration system. The solutions for vehicle air conditioning not cooling are: 1. Check if the compressor is faulty; 2. Inspect whether the refrigerant pipes are leaking or damaged; 3. Check for the presence of refrigerant; 4. Clean and replace the air conditioning filter. The function of the vehicle air conditioning is to adjust and control the temperature, humidity, air cleanliness, and air flow inside the car cabin to an optimal state, providing a comfortable riding environment for passengers and reducing travel fatigue.
A few days ago, I encountered an issue with my car's air conditioning not cooling, which was really frustrating. Looking back, there could be several reasons: refrigerant might have leaked due to cracks in the pipes or loose connections; if the compressor is broken, you won't hear the usual humming sound; a non-functioning fan could also be the culprit, as poor heat dissipation in summer directly affects cooling; electrical issues like a blown fuse or relay failure can cut power to the entire system; a clogged air filter from long-term neglect can also prevent proper cooling. I first checked if the fan was working, looked for any abnormalities on the pressure gauge, and tested the AC switch thermostat, but for more professional matters, it's best to leave it to the car shop. Regular maintenance can prevent such issues, like cleaning the filter and checking refrigerant levels annually.
When driving friends around, the air conditioning suddenly stopped cooling, which felt particularly embarrassing. In my experience, common causes include insufficient refrigerant, possibly due to minor leaks; compressor failure, such as a damaged electromagnetic clutch; fan motor malfunction leading to heat buildup; blown fuses in the electrical box, which are easy to check; or frozen pipes blocking the airflow of cold air. A simple solution is to first turn on the external circulation for ventilation to lower the cabin temperature and prevent heatstroke, then head to a repair shop for a professional check. Safety first—don't push through on the highway. Regular maintenance of the air conditioning system can prevent sudden issues.
