My Cal Spa 4000 will come on, however it will not heat and both motors come on High. I have checked the heating element with a volt/amp/ohm meter and all numbers are correct. Also, the top side control panel LIGHTS will not come on, but I can still control the pumps and light with it. When the pumps come on high i can turn them off with the top-side control panel but after a few minutes the pumps come back on high by themselves. Please help.