What is the solution for car air conditioning ice blockage?

[ChaseLynn]

Car air conditioning ice blockage The simplest way to deal with car air conditioning ice blockage is to recharge the refrigerant. First, evacuate the refrigerant, then use nitrogen to purge the air before adding the refrigerant back in, and replace the desiccant. One of the causes of car air conditioning ice blockage is the presence of moisture in the refrigeration system, where the water freezes and causes the blockage. Ice blockage can only occur at the throttling points in the refrigeration system, specifically at the expansion valve's throttle orifice. Since refrigerant and water are generally immiscible, when the refrigerant flows through the small throttle orifice of the expansion valve, the temperature suddenly drops, and the moisture mixed in the liquid refrigerant tends to freeze around the throttle orifice or valve needle hole. Another possible cause could be a malfunction in the air conditioning evaporator temperature sensor, preventing it from cutting off the compressor and stopping the cooling when the temperature reaches the critical point. In such cases, you can check if the evaporator temperature sensor has failed or is disconnected, or adjust the critical temperature setting of the thermostat.