I have a 2002, 4 Ton Payne Heat Pump and the air handler is leaking water inside the air handler and seeping out of the front panel. My friend who does commercial heating and air came over and we cleaned the inside coil, checked freon, vacuumed and inspected the drain line, poured Clorox down the drain pipe and coil as well as hot water and watched it drain while the front cover was off, and inspected the drain pan to find no signs of leaks. The leak only occurs when the AC is running and tends to leak more when it is more humid and when the unit runs a lot. The house is cooling fine and the unit runs for normal periods of time.
My friend suggested last night that I run the fan motor continuously and I did. There has not been any water leaking or seeping in the last 16 hours. The only work that has been done on the unit recently is the fan motor was replaced about 1 year ago. I'm almost certain that it is the same horsepower as the older fan motor, but I am wondering if the RPM's are different. I cannot seem to locate the RPM specification for this unit. Does anyone have any opinion as to what the problem may be? Thanks!