I have a M2/M3 Balboa board, 1 year old board. 240v heater element. Everything works fine except that when the hot tub turns off there is still power going to one side of heater element. It is coming from pole 3 on board, high side heater. I have replace the relay on the bird but it is still showing 117v. I have unplugged the pressure switch and this hasn’t even stopped the one side from showing 117v. Any suggestions? Something on the board seems to stuck, in my opinion.
thanks for any suggestions