Sounds like the polarity. Easily corrected by swapping the red and black position of the wires inside the plug. Make sure there are no other power sources feeding the unit before removing the plug.(the white and green wires should not be moved. Easy way to remember wiring a three phase plug. Most are labeled on the inside of the plug with GXYZ. G is always the green ground wire. X-red (Indians were here first), Y- white ( then came the white man) Z- black ( then the black man)
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Sounds like the polarity. Easily corrected by swapping the red and black position of the wires inside the plug. Make sure there are no other power sources feeding the unit before removing the plug.(the white and green wires should not be moved. Easy way to remember wiring a three phase plug. Most are labeled on the inside of the plug with GXYZ. G is always the green ground wire. X-red (Indians were here first), Y- white ( then came the white man) Z- black ( then the black man)