[ChadZ]

Not 100 percent sure on ice maker winterization either. Our new Montana has a drain line directly underneath the RV. We did not get a good answer on our questions to Keystone about the ice maker. There is a sticker on the ice maker referring to the owners manual for winterization. The sticker also refers to the drain line. The owners manual is not informative at all. No information on ice maker winterization. Keystone told us to contact our dealer. The dealer told us to turn the winterization valve on and leave the antifreeze suction line in the bottle overnight with the demand pump on. As long as the ice maker valve under the kitchen island is open and the ice maker is on, the demand pump will fill the ice maker with antifreeze. I believe this will work. The problem we have is the check valve on the winterization connection does not allow the demand pump to stay primed., so we could not leave the pump on unattended. We simply drained the ice maker line under the RV and are hoping for the best. If the ice maker is ruined, I will remove it. Very disappointed in the winterization system on this RV. Next year we will know.