What are the reasons for the Wuling air conditioner not cooling?
2 Answers
The common reasons for the Wuling air conditioner not cooling are likely due to slight refrigerant leakage or excessive refrigerant. Here are the solutions for car air conditioner refrigerant not cooling: 1. Slight refrigerant leakage: This can be observed from the sight glass on top of the dryer tank. During normal operation of the air conditioner, if there are continuous slow bubbles in the sight glass, it indicates insufficient refrigerant. If obvious bubble flipping occurs, it means the refrigerant is severely insufficient. The solution for insufficient or too little refrigerant is to add refrigerant. However, please note: if adding from the low-pressure side, do not invert the refrigerant bottle; if adding from the high-pressure side, do not start the engine. 2. Excessive refrigerant: This can be observed from the sight glass on top of the dryer tank. If no bubbles are visible in the sight glass during operation of the car air conditioner, and no bubbles appear after the compressor stops, it definitely indicates excessive refrigerant. If the amount of pressurized cooling oil is too much, relatively turbid bubbles can be seen in the sight glass during normal operation of the air conditioning system. Of course, if it is indeed excessive refrigerant, you can slowly release some from the maintenance port on the low-pressure side of the air conditioning system.
I've been driving a Wuling minivan for several years and found that air conditioning not cooling is mostly caused by insufficient refrigerant or leaks, as low refrigerant levels make the system work harder. Compressor aging or failure is another common issue—if there's no humming sound when starting up, it might be broken. A condenser clogged with road dust and dirt can't dissipate heat properly, reducing cooling efficiency. If the fan isn't spinning or there's a blower motor problem, airflow gets cut in half. A dirty air filter blocking the vents is common after prolonged AC use—last time, my car had weak airflow due to an unchanged filter, but cleaning it fixed the issue. Before summer, check refrigerant pressure and clean the filter regularly; don't overlook safety—driving without AC in hot weather increases accident risks and fatigue. For minor issues like filter replacement or refrigerant top-up, DIY is fine, but major problems should be handled by a repair shop for peace of mind.
