Hello, Our Bosch dishwasher partially fills then stops. The motor hums and the machine does not move into the wash cycle. The dishwasher does not drain unless the cancel - drain buttons are pushed. So I do not believe it is the overflow switch or other overflow component. I did replace the water inlet value which appears to be a waste of $40.00. Could the problem be the water level switch, or some other component. Thank you all.

Paul