Thanks, yes the filters are out and the valves are open. Here's a dumb question. 2 pumps, what does each do, and how can I be 100% sure they're working? I have a jet button that gives me 2 speeds, but that seems to be all from 1 pump. I hear both pumps running and both get warm, but one might be chugging along and is never know. That would give me a dr error I believe due to lack of flow.