CliffT Posted April 11, 2021 Report Share Posted April 11, 2021 My HT has a flashing green light that I can’t seem to fix. The issue started with flashing red and green lights. Our hot tub dealer had us replace the pressure switch which led to a flashing red light. This time our HT dealer had us change the high limit and thermistor. Now we are at the flashing green light. What I’ve done so far. 1: Bled the circ pump line. 2: Tested ohms on new thermistor and high limit. Within 1 ohm of each other. 3: At this point dealer called Watkins tech support who said the control board is bad. Ordered board. 4: Installed board. No change. 5: Re-installed old board and old thermistor. No change. 6: Drained tub. Re-filled slowly through grey pipe. 7: Reset breakers several times during 1-5. 8: Have tried with and without filters. 9: Jet pump one and two working fine. 10: Cycled through the valves on each jet pump to be sure all lines were clear and all jets worked. After refilling the circ pump would not run. Cracked the wet side and got air and water and pump fired up. Green light still flashing. Opened up the waterfall valve and bubbles stop coming from bottom of tub. Close waterfall valve and bottom tub bubbles start again. I am here air crackling through circ pump. Bled pump again. No change. Removed 1/4 tube on back of heater to bleed air. No air escaped. No change. Any ideas? Quote Link to comment Share on other sites More sharing options...
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