Our pool builder put in a 5hp Hayward TriStar pump which was too loud and too big to preform corectly. It was switched out to a 3hp Hayward EcoStar variable speed pump, which seemed to us to be working corectly. The pool builder has acted unethically in several instances, so now I feel I need to check everything he does. Two weeks after the pump was changed out the plumber showed up and told us he was told to change the computer (brain) that controls pump. He seemed to be confused as to why he was changing it, he was given an open taped up box by the pool contractor, which concerned him.
Are there different computers necessary for these pumps or is something odd going on here?