Anyone had one of these machines with no motor action, 3-phase motor checks OK with megger, takes on water and timer counts down wash time and empties etc. Suspect the motor drive board underneath (no signs of any damage on it). Parts are expensive so a second opinion would be nice 😀
I have some service info which covers models MAH21PD and MAH21PN, so not the same as yours, but it might help.
If you want it I could email it if desired