I have an older Spa (brnad name, manufacturer unknown). The only thing that I DO know about the tub is that it has an old Black Max Controller (by Hercules ?)

GCFI trips when water temp reaches set temp & 2nd stage for pump (jets) will not come on. I have to reset the GCFI or let it cool down some.
Also, how can I find out who the manufaturer is or the Model?
Any and all help would be GREATLY appreciated.

Hello? Can somebody tell me anything?