What are the reasons for the C4L air conditioner not cooling?
2 Answers
Detailed reasons and solutions for the Citroen C4L air conditioner not cooling are as follows: 1. Insufficient refrigerant in the car air conditioning system: The car air conditioning system consists of multiple metal pipes with small gaps between them, leading to slight refrigerant leakage. The drying bottle in the car air conditioning system absorbs moisture and stores some refrigerant, so when the refrigerant level decreases to a certain extent, the cooling capacity of the car air conditioner will be reduced. Solution: Refill the refrigerant. 2. Clogged filter screen: Excessive impurities in the refrigerant and refrigeration oil of the car air conditioner can also clog the filter screen, reducing cooling efficiency, increasing resistance, and decreasing the flow of refrigerant to the expansion valve, resulting in the car air conditioner not cooling. Solution: Clean the filter screen.
Last time I encountered a C4L air conditioning not cooling issue, it took me quite a while to figure it out. The most common cause is refrigerant leakage – insufficient Freon directly leads to no cold air, so you need to check for cracks in the pipes or loose joints. If the compressor is seized or not running, the AC will stop working; you might hear a whirring sound but no airflow. A dirty filter clogging the vents also affects cooling efficiency. Additionally, poor condenser heat dissipation, fan issues, or expansion valve failures could be the root causes. Electrical problems like blown fuses or faulty switch contacts are also not uncommon. I recommend doing some initial tests yourself: press the AC button to see if the compressor starts; if there’s a strange smell, the evaporator might have mold. Repair costs range from a few hundred to over a thousand, depending on the severity of the issue. Fixing it promptly can prevent bigger losses. Driving without AC in hot weather is truly unbearable.
