Installed timer [took 3 hrs]. I have an Eaton CHSPA50 ground fault [~$300.00]. Everything [wifi, program etc] was working. However, no power to hot tub. My Eaton hot tub GFI was tripped and blocking power to hot tub. Hot tub would not start. No information online about compatibility of Dewenwils with GFI breakers. Is this a wiring problem [neutral , ground etc.] or a total incompatability.