Can someone help me figure out how to wire my heater? I bought a used hot tub and they told me it needed a new heater, so I bought a new heater element. As I removed the old one, I carefully diagrammed the wiring and connected the new one the same way. It does not heat. I had the new one tested and it is good. It is a four prong in-line heater. Two of the prongs have red tips. I have the following wires: black, white, red, yellow, green and blue, along with the two white ones from the limit switch. All help is welcomed.
Thanx.
Slaks

Sorry but there's just no help you'll find anywhere with that type of description. The only way would be to upload a set of photos of your unit, especially the wires and things inside.