bodaro Posted February 11 Report Share Posted February 11 Hi all, I have an older 15 years old? Arctic spa 200 Gal hot tub. About a month ago it display HL (high temp limit) 2 or 3 times. That stopped but instead it displays 59 (thats the low set point for an arctic spa). That indicates the spa is resetting itself. When it displays 59 I use the temp-up buttons and sets to 104. In fact once I press temp-up once it displays the true/correct temperature of the water. After that, the tub works correctly (heat is on and pumps work). But only for a while (it used to work for a day or two but now it will reset in an hour or less). Once, as I was pressing thew temp up I saw the tub countdown the temp - back down to 59. Could this be a bad thermometer which is confusing the circuit board? Or a faulty board? Quote Link to comment Share on other sites More sharing options...
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