Turning the machine to off on a Bosch during fill or any process come to that will not cause a problem, we as repair engineers do it all the time when testing the functions.There is no reset mechanism as such, turning to off ironically does reset the processor to its start position. It must have been a coincidental fault that happened, cant advise on prob without seeing it. Cheers Kenjo (Bosch Neff Siemens engineer for 33 years)
Kenjo
June 2012