Miele Dishwasher problem and fix
I've been using a Miele Diamante Plus model G2143SC since last May 2010 and haven't had any problems with it until 2 weeks ago. I started noticing that when the water would drain from the dishwasher (regardless of which wash mode or cycle it was in) that there would be a loud "rattling" sound coming from the bottom. I opened up the bottom filter, nothing in it, and I removed the non-return valve that's on the right side. Rinsed it out (there's a metal ball inside) so I thought maybe this is what is causing the sound. After a few days of testing, having it drain water with the door open, I pinpointed the rattling sound was infact coming from that non-return valve, as I could move it a few mm and it would stop and then start.
So I called Miele up, explained the problem to them and asked if they could send me a new non-return valve. All they asked for was my name and address and sent it UPS ground. I asked the guy if he ever heard any type of problem like this, and of course the answer was 'no'. But he has no problem sending it out, and said if it didn't fix it that they've schedule a repair tech to come out.
I got the part in today. I removed the original non-return valve and used a suctioner to get out all the water that was in the bottom area, and used some paper towels to get it all dry in the area where the valve fits-in. I then put in the new non-return valve, and noticed it fit much tighter. The original one I could take in and out without too much force, but this one was much tighter taking in and out (though I only did that twice to try).
After the new one was installed, but the filter and everything back in. Ran the hot water at the sink so it would be ready, and put the dishwasher on the Express mode (no detergent and empty), since it fills 3 times and gets done in 15 minutes. The noise was gone at all the water drains, no rattling at all. I then ran the dishwasher for the Pots/Pans mode (since it was really full) and used the half-tab. Again, all the drains were quiet and no rattling sound.
When I had both non-return valves in my hand, the origional one looked sort of yellowish where the rubber o-ring seal is, but the new one was cream color (like the plastic). So I'm thinking that maybe the rubber seal went bad after the 10 months of use, or maybe it was the metal ball inside with the other internal rubber seal.
In any case, it fixed the problem, and I didn't have to fool with the repair guy to come out. Now hopefully this new one lasts and doesn't start to make that sound again. But if it does, it's an easy fix.
Now here's the question....Has anyone else heard a rattling sound from their Miele dishwasher whenever it would drain the water?