I'm trying to determine if i need to purchase a new main board GLX-PCB-PRO for my Hayward Pro Logic Automation system. All functions seem to operate correctly except I have a constant no flow message and an inability to do any of the salt functions. I’ve replaced the flow switch but that did not solve the problem. I verified I have no actual flow blockage as well and that the salt cell is operating correctly. Otherwise, my timer settings work, my valve settings work, etc. through the automation. I have a Pro Logic PL-PS-4 and a GLX-CELL-9-W. I'm running Main Software 4.46. Display Software Local-04 r4.00. RF Base Software r3.00 ID:63D6. I've already replaced the main board once and I've only owned the entire system 5 years. Really don't want to drop $500+ on a new board which is why I'm posting. I can turn super chlorinate on when the system is off. But even though it shows super chlorinator running, there is still NO FLOW. Wondering if there are any troubleshooting or other diagnostics I can do. Hayward tech support was useless (not surprising). Thanks for your help!