Performed diagnostic Colfax. Found leak behind furnace in copper pipe. Checked condensate pump working and appears to be fine. Thereâ€™s a 1/2 in of water on ground behind unit canâ€™t tell if thereâ€™s water coming from anywhere else. But inside of unit has some water marks so re sloped furnace for better drainage. And cleared drain line out of coil. Flushed multiple times. Set to have plumber come out tomorrow and see what itâ€™s going to take to fix leak.