Bosch Washer WAS20160UC Shuts off

The washing machine shuts off mid cycle with no error displayed. I start the machine and it fails during the spin cycle, stops, all lights off and the door never unlocked. The main board and the UI board have already been replaced, still with no results.

If you have any suggestion on what to check, or if your have the service manual and/or wiring diagram, that would help very much.

Model: WAS20160UC

Thanks in advance…