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The power cycle seems to have fixed the issue. I noticed when I went to unplug the tub that the green "ready" light was not on. So I guess this means something in the controls got confused and thought the tub was not at set temp so the heater ran all the time. When I plugged it back in the "ready" light was on and the tub is at 104 this morning and dropping down to 100 where I now have it set. My electric bill should be interesting this month.