relay on the main board is stuck. Will need a new main board. Maint pcb EBR36858812
Remove two screws from the back of the lid so it can slide back and off.
Once off, you will see the main pcb right in the front right side. There you will see black squares (relays) take the screwdriver handle end and tap each of the relays as if you were knocking on a door.
Plug back in, does it stop when it reaches the end of the cycle?
If not, unplug and tap the relays a bit harder
Plug back in and test again.
Sometimes you can free them up sometimes you can't. Either way you will still need the board.