I found this thread not only interesting, but it was also the kick in the pants that got me to do something about the repeatedly failing water intake valve/solenoid on my Miele Optima (G2420-SCI). The unit was installed new in 2008-2009. We moved into the house in early 2013, and by August that year we experienced our first failure. I do not know if the valve failed in the interval between 2009-2013. I called the local factory authorized installer, and they came out promptly. As I learned after the 2nd failure, they didn’t replace the entire hose/wire/valve, but simply cracked the case and wired-in a new valve. They charged me price of entire unit. Eighteen months later, same problem. I found some info on retrofitting the Miele valve with a GE valve, but I guess I was too timid to try it then. So, I called Miele and explained the problem. They comp’d me 33% on the new part, and this time they changed out the entire assembly. It worked fine until July ’16 when it developed same problem. This time they comp’d me the entire part and did another replacement. Every time they checked the inlet water temp it was below 130 degrees. The new part installed in August ’16 has barely lasted 8 months! We tried to use the machine over Easter weekend, and it came up with the same humming sounds of no water coming in and then popping off the “F12” fault code. After embarrassingly spending/wasting $1000 on 3 valve replacements, I finally decided to look back into the GE valve, and that’s how I got here. I was a GardenWeb member for years before Houzz, but lost touch, until I found this thread. Good x2. I followed the instructions on the YouTube video: https://www.youtube.com/watch?v=-LaqSO-Oyuw I opted to use the GE WD15X10003 valve as per the video, and not the WD15X93, mentioned earlier in this thread. As far as I could tell online, the two units are functionally comparable. The bracket and molded switch housing of the X93 are somewhat different, necessitated by the fact that the X93 is designed to be tucked into a cramped under-washer position in a GE system. It is also about $10 cheaper than the X10003, but the X10003 was available by Prime on Amazon, so I could fix it right away. I would guess that any of a number of these valves would be fine, since they would sit on the floor of the under-sink cabinet, and not require specific in-machine installation. The water inlet connection on the GE valve is a 3/8” Female iron pipe thread (FIP). My water source connector is a S/S flex hose with a 3/8” female compression fitting. To mate them I needed to pick up a 3/8” male-male brass connector with one end MIP and the other a compression thread. Connecting them was no problem, but getting them leak-free at the MIP-FIP connection was a bit of an issue. One has to hold the valve in one hand while tightening with the other and it’s hard to get a good grip on the valve portion. I used plumber’s tape first, but on the second try I used 1 wrap of plumber’s tape and a thread filler-sealer called “Hercules Block.” It’s a somewhat messy blue paste, but it did the trick. The wire connections were straightforward, just as explained in the video. I test ran it twice yesterday, and it worked normally, just as the OEM valve, and so far, there are no leaks. The time between failure and repair was only 3 days (not the typical Miele 3 weeks), and the out-of-pocket costs for valve, connector, sealer, electrical connectors was $40. (not $450+). The satisfaction of DIY, and un-shackling from the burdensome, confiscatory Miele system?....priceless. My only regret is that I should have done this after the 2nd failure...or the 3rd...slow learner, I guess.

Thanks for the tip. I called the main number for Miele USA tomorrow and ask about the warranty. In the August 08 brochure, these are the differences it lists between the Diamante G2120SC and the Optima G2430SC, but it doesn't always explain what they are. Temperature settings: 5 Diamante, Vario Optima Economy cycle: Diamante China & Crystal: Optima Sound: Q2 Diamante, Q3 Optima Auto Sensor -Optima G2430SC additions ($1679): Removable Bottle Holder 24hr Delay Start Water Softener Detergent Options -Optima G2470SCSF additions ($1899): Hidden Controls Acoustic Function Monitor Optical Function Monitor When I saw the Optima and Diamante, both looked to have the same cutlery tray. I think only the Excelle and LaPerla had the cutlery tray in two removable sections. For Detergent we use the Cascade 2-in-1 Packs (powder) with Dawn. For that, would the Optima be set for Gel or 2-in-1? The manual says the 2-in-1 setting is if it has a rinse aid built into the packet. The Cascade 2-in-1 does not, so I guess the Gel setting would be the best one to use. As posted yesterday, the dishwasher would have to be connected to my Hot Water line. Because of that, it would be around 120F when it get to the unit. It could heat the water even hotter if needed, but I wonder if it would lower the temperature if needed. It looks like the Diamante has 5 pre-set temperature settings (it doesn't say what the are) and the Optima can adjust it to any. I'd have to think about the extra cost for the Optima, as a few of the features would be nice. It's still sounds a bit odd to me that you have to spend over $1679 for a Miele dishwasher just to get a Delay Start, when my GE from 2 years ago had it for $600, and my current Electrolux does at $1300. We like the look of the intergraded (SCSF), but its $200 more just for that. I'm not sure what the "Acoustic Function Monitor" and " Optical Function Monitor" are. I ask tomorrow when I call them to find out about the warranty. When I was at the Miele showroom last week, I brought some dishes, glasses, silverware, and a baking sheet to see how they would fit. The tallest glass that I had just cleared the cutlery rack when the middle rack was in the highest position. Lowering the middle rack gave the glass more room, but then the middle spray was closer to the dishes. We put some of the silverware in the cutlery tray, and it wasn't as difficult to use as my mom thought it would be.

If you're concerned that you may not use it enough to run it that often, then get one that has a half load function. Many allow you to just do the top rack. However, the new Energy Star DW's only use around 3 1/2 gallons for a whole load nowadays. Even if you do run one for a less than full load, which uses around 2 1/2 gallons, you're still saving water over handwashing that same load. Seriously. The next time you handwash your dishes, you should try to do it on less than 3 1/2 gallons of water---and that includes rinsing! You won't be able to do it. You still need a certain amount of water to be able to submerge your dishes in, whereas the DW uses a much smaller amount and directed force to be able to loosen soil. A DW is considered a necessity in today's kitchen. Not having one subtracts value from the home, and indeed may knock an otherwise nice home out of the running when it comes resale time. At the very least, if you can't break your hand washing routine, you can always use the DW as your drying rack and get that off of your counter. But, once you really experience the quality of wash without you steaming up your glasses for a half an hour, you'll never go back!

We bought a Miele Lumen dishwasher a couple years ago and have had nothing but problems from the time it was installed. The dishes don’t get clean. I have tried all their “suggestions” and several different soaps. A tech came out a few times but nothing changed. As a last-ditch effort, I recently decided to try it on the “sanitize” cycle and that worked finally. The part I hate about this is that it is a 2 hour and 50-minute cycle!!!! So much for saving on electricity. On their website it says “Save up to 50% on electricity. All Miele Dishwashers can be connected to a hot water connection at a temperature of up to 150°F. This reduces electricity consumption by up to 50% and running times by up to 10%. In the Economy program, the energy consumption of the dishwasher drops to as little as 0.45 kWh.” If I ran it on economy my dishes would be so dirty! The dishwasher also condensates or leaks water under my cabinet and drips onto the floor leaving a puddle. Not to mention it drips on the electronic panel. I imagine there is a failure waiting to happen there. On the same side it drips it also build up all the gunk on the inside of the door panel. It is weird and I have no clue how this is happening. I keep cleaning it off and the next day it is back again after a cycle of dishes. I have pictures and video of everything I am explaining. Lastly, I have a horrible rattle when the dishwasher first starts. We had a working KitchenAid before we thought we were “upgrading” to a Miele. We now wish we had never got rid of the KitchenAid. We have a Miele vacuum and have been happy. Miele is supposed to be the best of the best. Sad to say that after our experience with the dish washer we will never buy a Miele product again. To say I hate this dishwasher is an understatement! I’m ready to “office space” it! After I wrote a review awhile back a manager had contacted me and had someone come out to try to “fix” it. However, nothing was ever fixed. In fact, after inspecting under my sink recently I have noticed that the water line is connected to the cold water. It should be connected to the hot water, per their website. I have reached out recently but no one has returned my emails/calls.