zippinbye

Thanks John. I haven't pulled the board yet. I hope I can get a manufacturer and part# directly off the relay. Any suggestions for a source?

Hi all. My first time on the forum. So thanks in advance for any advice. And I apologize if some of my terminology is a bit off ... I'm no technician or electrician, just a homeowner with a multimeter and some basic grasp of how electrons flow! I have a 2002 vintage LA Spa with a Gecko S-class controller/heater. It was drained and shut down for 6 months. On restart, there's no heat. There are no error codes displayed. However, I no longer have the manuals and cannot recall if there is a way to initiate a diagnostic scan. The heater element shows continuity around 11 ohms, and looks good physically. With the heater assembly intact, I get 120V at each element terminal checked to ground. Both element terminals checked against each other yield zero voltage. Unhook the leads, and I still get the 120V to ground (x 2), but I see 240V touching both leads. Interestingly, when I cycle the pressure switch circuit, I hear the relay click, but there is no power interruption during a simulated low pressure circumstance. Hook the element back up, and no 240V, but two 120V checks to ground. Here's my theory: there is some sort of load fault, and one leg sheds when hooked to the element. The two reads of 110V off the element terminals are simply pass-through flow from one leg. So I guess the implication is a bad heater relay on one leg. Am I on the right track? Or, is there a chance there is just some sort of phantom heater element fault, and is it worth buying an element to see? It looks like replacement boards are not available. I understand the common wisdom is that you replace the whole board if there's a fault. And given parts unavailability, it looks like a whole controller pack and heater is the next progression. Based on the prices I've seen, that becomes economically nonviable for my old spa. If I am right about one faulty relay, why not replace it? Since I cannot afford a new spa and am unwilling to put several hundred into a spa that is not worth several hundred, I am looking for sensible options. Thanks! - Rich in Las Vegas, NV