I have a LRSC26912SW side by side refrigerator that is about 5 years old. Recently, the ice maker will pour water into the ice cube assembly and down the rest of the freezer. What's weird is it will also make cubes correctly but the assembly will get frozen in place and the freezer becomes an ice mountain if I don't turn it off or thaw the assembly. Came home from a week's vacation to this: https://www.dropbox.com/sc/ykv7ux3sgxv1prr/AAAXSVMkIvko8nDLHOjYWYeZa

Guessing either the water is not shutting off or the tray isn't dumping the ice. Any ideas on where to start, or how much a repair would be?