Came out for a warranty no cool, upon arrival turned the system on in the cool mode, upon arrival found that unit started right up and began cooling, upon arrival to air handler found that the float switch though not engaged has water in it, used a pitcher of water to fill up primary drain line and the primary drain line was clogged, tried to perform drain line clear out with pressurized nitrogen down and into sink with 75 psi of nitrogen, than tried with 100 psi and was not able to clear drain line, took a trash bag and taped it over primary drain line at air handler, then went to sink where it drains to, cut drain line and blew it back to trash back and felt zero resistance, pulled apart p trap u dear sink and found that the Tee under sink was completely clogged, took it completely apart and washed out Tee and 3/4 primary drain line that hooked to Tee with water hose and then took towel and clean off pipe from sink that slide down into Tee, added bleach to primary drain line to clean