Was working fine, but cleaned it per manual with recommended cleaner. Now it will not make ice. It ran fine for 2 days after I cleaned it. Drain seems fine, although it is a little slow. I blew 90 psi air from end of drain pipe up into the ice bin and a little black specs came up into the ice bin. then I blew air down the drain hole in bottom of ice bin and it seems to be clear. Water flows to resevoir, but will not make ice. Ideas? thanks