Thanks for reply. I replaced the controller last summer because the unit kept shutting down for voltage faults (when watching the screen
, it was varying wildly). I do not have the tech manual. However, I finally got the unit to reset the Hi Volt fault. Has worked fine since. I'm concerned though because when the controller failed last summer, the tech rep told me it is a weak point in Kohler units. Hence, I bought a back up at same time.