I've read through many of the threads with a similar issue regarding no lights on my system. There is power to it, registering 31 volts. I think my issue might be the flow switch, as it broke off when it was installed a few years ago. It worked fine until now. Any idea how I would remove it short of replacing the PVC pipe? Any help is appreciated.
I decided to remove the section with the flow switch, replaced necessary pvc pipes, and installed a new flow switch. Unfortunately this did not solve the issue with no lights, so I'm back to square one. All I can think of now is something with the board, limiter perhaps? ?