I have a Kenmore UltraSoft 480 that is 5-years old. A week or so ago it starting regenerating and draining non-strop. I pulled the plug and engaged the bypass after about 15-hours of running (part of this time was overnight while we were sleeping).
Looking online it seems it could be the motor or wiring harness. Sears charges $70 for a service call and I would have to take a 1/2 day off of work waiting from them to show up in the 4-hour window. I am thinking of junking it and never buying another Kenmore Softener.
I have been looking at a softener with the Fleck 7000SXT valve, but am starting to read several boards/thread swearing by Clack. Problem is I can't find anywhere online that actually sells Clack softeners anymore.