Verona Hog Posted December 30, 2020 Report Share Posted December 30, 2020 I got a FLO error on my Jacuzzi J-385 and found that my 220v circulation pump (see photo) had suddenly stopped working. I checked the pump’s power source at the board (TB2) and discovered that only one of the pump’s two power wires (white) was getting 120 volts; and, the second power wire (black) was only getting 3 volts (see photos). Do you think it’s possible the board’s TB2/circulation pump connector is the problem…yielding only 123 volts with both connections versus the required 220 volts? Or, am I missing something else? Also, I found an empty connection terminal on the board (TB4) with a hot 120-volt output…so I’m thinking I can just move the pump’s black wire to it and fix the low voltage problem…but, I’m afraid Ill mess up something up and fry my new board—as it’s was replaced back in March, and the pump has been wired the same way (to TB2)/working fine since then. Any suggestion/inputs would be appreciated. Thanks, Jimbo Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted December 30, 2020 Report Share Posted December 30, 2020 First off, what is the voltage between the black and white circ pump wires, not to ground? Check incoming voltage to the circuit board. Are there any error codes on the display? Quote Link to comment Share on other sites More sharing options...
Verona Hog Posted December 30, 2020 Author Report Share Posted December 30, 2020 Thanks for help, but I’m not sure what you mean by checking the voltage between the black and white circ pump wires? I checked each wire to ground and got 3 and 120 volts respectively. The only error I’m getting is a flo error. I haven’t checked power coming to the board, But all three/ other pumps work fine. Please clarify what you mean about checking the voltage between the wires. Thanks again Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted December 30, 2020 Report Share Posted December 30, 2020 Put one tester lead on each wire from the pump at the circuit board terminal. 1 Quote Link to comment Share on other sites More sharing options...
Cusser Posted December 31, 2020 Report Share Posted December 31, 2020 17 hours ago, RDspaguy said: Put one tester lead on each wire from the pump at the circuit board terminal. This. 240 volts is like two 120 VAC of opposite phase; tough for me to explain. Quote Link to comment Share on other sites More sharing options...
Verona Hog Posted January 4, 2021 Author Report Share Posted January 4, 2021 Got it, I put the tester on each wire.....and, low and behold I got 220 volts! You all are right on, and I appreciate your help. Even though I’m having a hard time rationalizing why I didn’t get the same results when I went to ground, I’m good to go now and am pressing on to the next step of replacing the pump. Thanks for keeping me straight, and again appreciate your help. Quote Link to comment Share on other sites More sharing options...
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