Problem with baumatic bdw8 dishwasher?

I have a baumatic bdw8 dishwasher. It has been behaving OK but yesterday my housecleaner suggested running it empty with just some salt, apparently that is what she does with another machine in another unit she works in.

Next thing I knew there was a loud noise and by the time I reached the kitchen, the water was all over the floor and everywhere. Took ages to clean and now that I want to restart it does not, PLEASE HELP.

I guess I need to REBOOT its computer or something ! ANY SUGGESTIONS would be GREATLY appreciated.

FRUSTRATED SINGLE MAN IN LONDON