What Causes the High-Pressure Pipe of Car Air Conditioning to Not Heat Up?

[Willis]

Car air conditioning high-pressure pipe not heating up is due to fan issues or refrigerant leakage. Here are the specific details: Fan Issues: If the refrigerator is of the indirect cooling type, check if the fan is working. Open the freezer door, press the button at the edge of the door opening, and observe whether the fan is operating. A non-working fan can also cause the refrigerator not to cool. Additionally, placing too much food can affect the cooling effect. Refrigerant Leakage: If the compressor can work, determine whether the refrigeration system has refrigerant. After letting the refrigerator run for a few minutes, unplug it and listen carefully for the sound of liquid flowing in the copper pipe. If there is no sound, it indicates that the refrigerant in the system has leaked, or the compressor has lost its working ability.