smolloy Posted April 14 Report Share Posted April 14 2008 Hotsprings Prodigy I installed a new Watkins heater, circ pump and ozinator into this spa and it started up fine, runs for several hours, and then threw a single red blinking light once it reaches about 100 degrees. Bleed and rested several cycles, then I replaced both the switches in the heater. After that I replaced both sensors and now when I fire it up both lights blink and I see this LIM OK light on the board. The circulation pump still works, and initially the heater works but then both lights blink (red and green - power/ready) . Only thing I can think is the the main board is bad or I did something in the plumbing to hinder flow (unlikely..) I have done the following: Purged the lines, tested and balanced the new water Replaced the filters with new TRI-X filters Verified circulation pump flow Bleed any air from the lines Replaced the heater Replaced the two sensors (thermistors) Quote Link to comment Share on other sites More sharing options...
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