Why Does the High-Pressure Pipe of a Car Air Conditioner Freeze?

[AsherDella]

The reasons for frosting on the high-pressure pipe of a car air conditioner are as follows: 1. Blockage: The filter screen or the evaporator inside is too dirty, causing a blockage that obstructs ventilation. 2. Indoor: The fan speed of the indoor unit is too slow, leading to poor temperature exchange. 3. Malfunction: There is a leak or damage in the air conditioning pipeline, resulting in a lack of Freon. Solutions are as follows: 1. Check whether the connecting pipe is tightly connected. If the connecting pipe was extended during installation, check for any sand holes at the welding points. If the connecting pipe was shortened during installation, focus on checking whether the flared end you made meets the standards. 2. Blockage in the capillary tube of the machine: The capillary tube inside the machine also shows frosting, and the current rises continuously from startup until the compressor overheats and shuts down. Releasing the refrigerant and replacing the capillary tube can solve the problem.