May 7, 2024 · The most frequent reason behind your liquid line being frozen is restricted airflow. Your liquid line will stop working when pollutants block your filter drier. Other common reasons include a stuck solenoid valve and TXV being partially closed.

May 27, 2022 · The Liquid line of an AC unit is a vital part of any air conditioning system. The pipe carries the coolant (liquid) throughout your AC unit, and If it fails, the entire system will fail. When the air conditioner compressor turns on, it creates a vacuum inside the unit.

Sep 2, 2019 · The good news about a liquid line restriction is that you, as the technician, can solve the problem on an air conditioner by replacing the filter drier, the screen (if needed) and the TXV.

Nov 15, 2019 · Short answers is high (liquid line) vs low (suction line) pressure of the refrigerant gas. When the refrigerant gas in its vapor form gets to the compressor it is compressed and heats up due to compression. at this point it is the hottest (high pressure).

Nov 29, 2020 · Hi, I noticed that our AC unit was not cooling well and determined that the copper liquid line going into the air handler, which is in a closet in the upstairs hallway, is very cold when the AC is running.

Sep 13, 2019 · The solenoid is in the liquid line near the air handler inside, so by opening the valve, the suction pressure increases, the compressor turns on, and when it closes, the compressor pumps down and shuts off.

A liquid line supplies liquid refrigerant from the condenser to a thermal expansion (TX) valve adjacent to the coil. A suction line provides refrigerant gas to the suction connection of the compressor.

Jul 1, 2015 · The larger line typically carries a cool gas and is insulated. This is commonly referred to as the suction line, but it is also called the return line or vapor line. The smaller uninsulated line typically carries a warm liquid. It is most often called the liquid line.

Jul 19, 2023 · Learn about its key functions and how it contributes to subcooling and proper refrigerant flow regulation, enhancing energy efficiency and system reliability. Discover why the liquid line is a crucial component in maintaining optimal performance in air conditioning and refrigeration systems.

Jul 2, 2013 · Liquid lines must be sized, like suction lines, to minimize pressure change. With liquid lines, there are two factors that come into play that actually creates the sum of the pressure change.