Hello, I have a brand new Blomberg (GSN 9121 ; GSN 9122) dishwasher (arrived on Tues this week). We used it once and the second time tried to run it, it wouldn't start. Having looked in the dishwasher, it's not draining. I cancelled the washing program by holding down the start/stop button for 3 seconds so that it would drain but it didn't. Can you help please?