Hey group. I have a Great Lakes jubilee elite spa with heating issues. Had been working fine, recently stopped heating. Replaced the heating element and pressure switch, still nothing. No error codes either. However, it will heat slowly if I leave the jets on. I've cleaned the filter, left the filter out, tried numerous adjustments on the pressure switch and can't figure it out. The thermostat is the type with the probe that goes in the sleeve on the heating tube, with the other end connecting to the tub. I've read a lot about high limit switches, don't think this model has one. It has a Balboa 410e wiring system. Any help is appreciated.