The power starts to work and looks like it is going to run. As soon as it gets started, it goes off and flashes ER UO over and over. It will not work.
The ER UO error indicates a vent open error. While in wash cycle, Main Control Board does not receive signal from vent assembly that vent plunger is closed. Plunger status is sensed with optical sensor in vent assembly. Check wiring between vent assembly and Main Control Board. If wiring correct, replace vent assembly. If error still exist, replace Main Control Board.