I have a Leisure Bay spa that I got out of an investment property. Says on the control box Smart Technology Spa Processor.I have never been able to get the heat to come out of the jets or where ever the heat is to come out. I have replaced the heat element, circulating pump, had an electrician look at it to make sure all electrical parts are working properly and I still cannot get this thing to heat up. Any suggestions? Oh, the heat pump I put in was an exact replacement of a Grundfos that I got on this website.