Just when I need it most (wrenched my back today) my spa heater wont light. It's an almost new jandy jxi 260N. I installed it myself but had the electrical done by a licensed electrician. Natural gas was already run to the pad. It's worked fine every time we used it (about 10 times) and this morning it started like normal. First the blower kicks on then after about a minute it normally lights. Instead, I get this loud buzzing sound. It goes for a couple of seconds then stops -blower keeps running. Then the buzz starts again and the cycle repeats. Unit ran fine last night! Sounds like a relay or solenoid is buzzing to me but I don't know anything about pool heaters. If it's something simple I'll try to fix it otherwise I guess I'll call Jandy for warranty support.