you guys helped me before and I need help again. 1995 Alexa, Jacuzzi brand, 110 volts, no blower, one pump motor, new heater plug last year. OK, I had a pump motor go bad on me about two months ago. I replaced that motor with a single speed motor as a temp fix because I got it cheap. no problems whatsoever just single speed, heater great. now I bought new 2 speed motor, hooked it up and NO HEAT!. I'm scratchin my head. did voltage test and it seems no or very low voltage at relay that connects to heater. Wondering about leakage current detector? my schematic mentions one? by the way, I'm not tech just home user that's fixed this thing before.

had an extra relay and just for kicks replaced the heater relay. surprise! working now. thanks for your help anyways. Dave