How to Fix Frosting on the Thick Pipe of a Car Air Conditioner?
2 Answers
It is recommended to pour warm water at about 40°C, but excessively low outdoor temperatures may cause icing. In winter, turning on the cooling switch usually takes 3-5 minutes for the frost on the thick pipe of the air conditioner to completely melt. At this point, the surface of the radiator is dry and can last longer. Directly add an electric heating pipe to the radiator, and use an electric timer + relay control. Once the time is set, the circuit can automatically operate to defrost.
I've encountered the issue of the air conditioning suction line frosting up while driving. It feels icy cold with a layer of white frost, which usually indicates a system problem. This is typically caused by insufficient refrigerant or the low-pressure side being too cold. I would first turn off the AC to prevent compressor damage, then check the refrigerant level myself. If it's low, I'd top up the refrigerant, but without proper tools, I'd have to visit a shop. A clogged expansion valve is also a common cause - you can try cleaning it with compressed air, but be careful not to damage it. A dirty evaporator can restrict airflow and cause frosting too, so cleaning the evaporator and filter is a good solution. Generally speaking, simple issues can be DIY fixed, but for complex problems like leaks or electrical faults, it's best to visit a professional repair shop. Never delay repairs as it could lead to higher costs - timely maintenance saves both money and headaches.
