tng2000 Posted June 5, 2021 Report Share Posted June 5, 2021 Just picked up a used hot tub with the Balboa VS500 control. The Spa was operating before it was moved to my home. I just connected everything up and now my breaker trips instantly. My question is, can anyone confirm the resistance reading from the black "HOT" terminal to the "NEU" terminal on the board I have removed the board from the housing and disconnected any wires from the "NEU". I have also removed the MOV protection (it tested OK) I'm measuring only 37 Ohms. Board looks perfect otherwise, I'm stumped at this point. fingers pointing to the terminals I measured across. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted June 5, 2021 Report Share Posted June 5, 2021 GFCI wired incorrectly is my guess. The white wire coming from the spa has to go to the GFCI and NOT the neutral bar. Only the white pigtail off the GFCI goes to the neutral bar. 1 Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted June 5, 2021 Report Share Posted June 5, 2021 FYI White to blk 120 white to red 120 red to blk 240 1 Quote Link to comment Share on other sites More sharing options...
tng2000 Posted June 5, 2021 Author Report Share Posted June 5, 2021 Thanks, I'll need to correct the wiing, as mine is not wired that way. Will test it out and report back. 1 Quote Link to comment Share on other sites More sharing options...
tng2000 Posted June 5, 2021 Author Report Share Posted June 5, 2021 Thanks CanadianSpaTech !, the GFCI wiring was the problem. Once I corrected the neutral wire and reinstalled the control unit it fired right up. Now I have discovered every single control valve is shot....used tubs, gotta luv'em ! 1 Quote Link to comment Share on other sites More sharing options...
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