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So with the new Flue sensor installed (Genuine Factory Part), I reset the load defaults and was able to get the unit to start and fire up. I did notice through the sight glass that the flame was yellow/orange in color, which to my understanding could indicate incomplete combustion. Could this...

16psi. Tried replacing the Flue Sensor. When I turned everything back on, sounded like a quick click and then the "Fault High Flue Temp" reappeared.

My spa was working fine one evening, the next is would not heat. I checked and the display showed Fault High Flue Temp and does not turn on at all. I've removed the cover to inspect and do not see any indications of leaking around or on the heat exchanger combustion chamber. I also removed...