I have (had) the exact same problem with my Miele. Here is what (appears) to have fixed it:
1) Disconnect the inflow line at the water source. Its the connection that looks like a garden hose. Use a screw driver to remove the washer inside, the pull out the little filter with needle nose pliers. My was clogger with particles from the washer. Clean with soap and a tooth brush.
2) Disconnect the outflow line at the garbage disposal. My was moderately clogged with food (Note: my son overfilled the garbage disposal before running. It may have backed up).
This worked for now at least. Remeber, as irritating as red lights can be, it prevents the motors and pumps from burning out when you have clogged plumbing.
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All the lights on my incognito started to flash. This was after the drain/intake light started to flash also. I called Miele and they helped me to reset the lights flashing. They said that when all lights are flashing that this indicates an overheat condition. They asked if my filters were clean and I thought they were. However, my wife had started to use liquid dish washing detergent and the liquid detergent had plugged up the filter screen at the bottom of the dishwasher. I cleaned it good with a scrub brushing and boiling water. This fixed the problem. Bottom line, don't use liquid dish washing detergent in a Miele, only powder.
The Intake light is also the Drain error light. If the light is flashing, then turn off the dishwasher and clean the triple filter, the drain pump and the non return valve and make sure that there are no kinks in the drain hose.
Make sure the water is ccoming in at a pressure above 4.5 psi. Also make sure that the water valve is open and clean the water intake filter.
The final possibility is that the Waterproof system has tripped and you need a Miele technician to service the unit.
I have exact same symptons, please someone help. I have had issue before where the plumbing backed up so it overflowed into the catch tray. Then that has to be vacummed out and then just start a new cycle. This time there is no water in the overflow tray....
I had a flashing red Intake/Drain light. After calling Miele tech support, he confirmed that the drain was plugged so I took all drain hoses apart and finally discovered that the problem was a plugged air gap. I replaced it and the problem was solved.
After cleaning the drain, looking at the intake (no filter on ours) and the light wouldn't go off, I just decided to take the ctrl-alt-delete approach and hit all the lower four buttons all at once, bingo, it cleared the light and machine started.
When this happens with my dishwasher it usually means that the drain is clogged with food/debris. To fix
1) remove bottom dish rack from machine
2) using a small cup, scoop out as much water as possible
3) remove inlet drain cover and unsnap the plastic insert and remove
4) rinse the plastic part and reinstall
5) start machine
6) if light still flashes, repeat steps 3 4 and 5 and restart
My G892SC is almost 10 years old and recently had the same problem. The machine seemed to be stuck in the drain cycle and the intake/drain light flashed. I called Miele and ran through a few diagnostic tests but nothing worked. I had a Miele certified technician come out to look at the problem and he told me the drain pump needed to be replaced and that it would cost about $500 for the part and labor. While researching the cost of a new dishwasher, I stumbled on some online discussions about this problem and someone suggested pressing all 4 lower buttons on the control panel at the same time. I tried it last night and it worked! I only ran the wash & hold cycle but will try a full cycle tonight.
1. Unscrew air gap which is on the counter-top next to sink. 2. Unscrew drain clamp under the sink which s connected to the air gap. 3. Use a wire hanger to push down debris clogging the drain. 4. Screw clamp and air gap back in place. 5. The dishwasher should work. Routinely clean out air gap every half year.