My Polaris pump has suddenly stopped working. I can get it to turn on, but it's not making nearly as much noise as it normally does so I assume it's not spinning as quickly. It turns off after about 30 seconds and is really hot to the touch. I assume it's tripping a thermal cutoff switch.
I took the cover off to make sure the impeller wasn't blocked by anything, but that's as far as I've gone. Any help with how to diagnose would be greatly appreciated.