I have never had a dishwasher before. When it came in the plumber came to install. He said he never leaves an install til it runs a cycle and all is well. We followed the manuel instructions and nothing was happening. He had me get the Bosch people on the phone. The very kind lady said " Is there a red light shining on the floor?" We told her yes. She said "it's running, lady you have bought a Bosch, you can't hear it running! She was right! Had us place our ears flat to the counter top and we could then hear the water! Love it!! Nothing like feeling like a couple of fools!