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Found 1 result

  1. Hi, I have a 2002 Clearwater Spas St Andrew, it has 2x 3HP Waterway pumps (2-speed, 3721221-1D) and a Balboa SUV M7 control board. Pump 1 acts as circulation pump on low speed. Pump 1 recently failed, which also popped one of the two 25A TD Fuses on the board. I replaced Pump 1 and the fuse with new units, but the pump will not come on in low-speed mode, which is what circulates the water through the heater, so the spa is still unusable. You hear the board relay click when the low-speed should come on, but nothing happens. It works fine in high speed mode. If I swap Red and Black, it will run in Low-speed (only). I tried swapping the new pump with pump 2, and the symptoms stay with the pump 1 position, not the physical pump. All other controls and display work correctly. I have verified the wiring from control board to Pump 1 is good. I suspect something on control board, like maybe a faulty relay, but I don't know how to test that so I'm at a bit of a loss at this point. I'm hesitant to drop another $300 on a new board without know for sure that's going to fix the issue, as I assume they are not returnable once installed. One other thing I noticed is my 50A GFCI 'Test' button is not tripping the breaker, but I did validate the input voltage at the control board is correct (Wh<>Bk 119V, Wh<>Rd 119V, Bk<>Rd 238V) Any suggestions appreciated, thanks.
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