I got an older Dolphin Diag. from my neighbor. Sometimes it works fine and some times it does nothing. By unplugging and shutting off, waiting a while then restarting it goes fine. It does get caught in the deep end on the two pool drains.
It doesnt seem to have one thing going on to nail down the problem.
I did hear they have larger tracks to avoid getting stuck on the drain covers
New to hear but this is my 2nd pool and still learning
20k? 16x32 liner salt pool
pentair 1hp punk and sand filter
aqua rite generator
1 skimmer 2 floor drains