I think it's best to call Miele. There are two sensors in the dryer: 1) one on the three long paddles inside the drum to read fabric moisture and, 2) one inside the exhaust plenum to monitor heat and to shutdown the unit if the exhaust gets too hot, thereby notifying you with the panel light. Either the exhaust sensor is bad, or there is something obstructing the exhaust in the machine itself. Someone earlier mentioned that they found a part, located within their 9800's exhaust, out-of-skew when they checked their unit. However, I would not mess with it, and while the Miele Tech rep is there (insist that a factory Miele tech rep. comes as they have the software, and hardware to properly work on your units) ask them to also upgrade the firmware on both your washer and dryer, if needed.

Yes, mine is electric. Frankly, I can not say the noise is much different, but certainly having the exhaust air blow back into the dryer housing is not a good idea. Worth a look next time you have the dryer out.

the adapter is "b*llsh*t" A 220v dryer can't work on 120v I never heard of such an adapter and I bet no UL label. I'd complain to your city building / electrical inspector and then to the place you bought it. The outlet should have beed changed to a 4 wire outlet, if there is 3 wires & a ground wire in the outlet box. US dryers don't usually come with cords attached because some old houses still have 3 wire oulets, newer homes are built with 4 wire outlets. Otherwise you may be able to change the dryer cord to a 3 wire 220v cord. Check with Miele.

Molly is talking lack of controls because she is comparing the new Miele's with the older ones. The older ones let you program in extra rinses, high water...this and that and you did so right on the console. I believe mine is newer than Molly's but it still has the selector dial, but some of that programming was removed, although I can still get the machine to do much of it. The older ones like mine had different cycle selections in that you picked a fabric type such as cotton, silk, wool, perm press.. and then within each fabric type you selected a temperature from tap cold up to almost 200F in some cycles. The newer ones have the push buttons, with names like Sanitize..whatever.. but I am used to thinking"this is cotton and it is dirty and there is no elastic in it,and it is color fast so I am washing it at 180F" But the 4840 does have the custom cycle which will let you customize the cycles. So I think the new Miele models are going to offer as much if not more control than many of the current models sold today...Just not as much as the ones before. My neighbors see the options on my machine and their eyes glaze over and they say "I just want to push a button and go, I don't want all of this" so for the most part the current overall market didn't want what was Miele was offering.... Folks like me are used to those selections and flexibilities so I will be keeping my "OLD" miele washer for as long as I can. I have the new gas dryer and it is fine.