Hello! We have a Hayward Aquarite for a 28k gallon in ground pool. When we started it up for the season, it had a solid “no flow” light. We tested with a screwdriver and the no flow light did flash then, so we thought it was the flow sensor. We ordered and replaced the flow sensor (hex head from cell to phone jack connected to board/housing). After replacing, nothing has changed, still solid no flow light. We did rotate the sensor in the pool piping to make sure our flow direction was right. What should be our next step? Thanks!!