I'm going to look at a tac 32 in the morning shutting down with a 1529 fault, drive communication loss. It just came off free service and we've had it for just a few months. It's the hydro with pumping unit in pit and controller behind 2nd floor door frame. No experience with these newer types, but I'm sure it has the electronic butcher valves. Does my 1529 fault come from no communication between the cpu and the board that controls the valve?