I fix Appliances for a living and sound like a bad water valve to me. Or stuck float switch, it could even have a crazy water tank setup thing on the side of the unit causing issues, test for power at the water valve or simply hold the magnet/valve when it should be onand you should feel it vibrating. Otherwise, the control boards “water relay” could be worn and either replace that component or the board. When they dry wash it tears them up. Over revs, friction on the chopper, added heat, the element could sorta over heat..