JDCam
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I have a 2011 Arctic spa. For the last 6 mo or so, I have been getting a recurring HL error. Power cycle will clear it, but it comes back shortly after. I recent days it is now continual and I cant get the water up to proper temperature. I was about to go out and buy a replacement HL probe, but then I started second guessing myself. How do I know its the probe and not a fault with the heater or main board? JDCam