I have a Ruud Achieve model UPKB 060 CAZ that has a line that keeps freezing up when the thermostat is set to go below 76 degrees. The freon was checked and some was added. Also, the air handler is in...
Normally when the suction line freezes which is the larger of the 2 lines, #1, its low on freon again and unit has a leak. They are sealed systems and they should never need freon only if they develop a leak. So, this we know. Also, if the air filter is dirty and plugged, and the evaporator coil at the air handler is dirty will cause icing of lines and coil.Not enough air flow across the coil due to a dirty filter. When you set your thermostat to go below 76 degrees, the unit will work harder to keep up to bring the temperature down and if you have a leak which you do, the suction line will ice up. A Ruud 060 is a 5 ton btu unit, good size. Who ever added freon should have done a leak check on it. I would recommend you calling them out as it is low again and do a complete leak check, add dye to the system or there are many ways to do this. If the leak is not found it will continue to ice up. By E.P.A. standards, they cant keep adding freon, they must find the leak.This is all about you can do, is check and make sure you have a return air filter and its clean, and if it continues to ice, have them find the leak, repair it, and re-charge it. I wish you the best.
Jun 18, 2010 |