Miele CM 5100 decalcifier

Hello,

love forum members,

at my Miele fully automatic coffee machines 2 years old, the machine has been sent several times to Miele, as when descaling an error message constantly comes "empty drip tray". It's never full, but the device thinks it's full. At Miele, you could never tell anything. According to their statement, the cleaning runs without complaint. Strangely enough, never with me. Always the same mistake. Today I watched the process very closely.
First a lot of water flows over the cappucionator. Until then, everything's inconspicuous. As soon as he is ready with this procedure and the cleaning of the other pipes begins, the following happens. The device sprays water internally and the contacts are wetted so that the device thinks it is full.

If you put a splash guard (e.g. handkerchief) in front of the contacts, the process runs through. So something must be leaking internally. Unfortunately I don't know what to do and don't want to open the device.
Has anyone had similar experiences? And above all, it is normal that no water flows through the coffee nozzles during the cleaning process?

When the water is rinsed normally, it also flows through the coffee nozzles. Does anyone have an exploded view of the machine?

Hello,
We have known this problem for several months. I first had a hunch that water was somehow being pulled up at the contacts. Therefore I tried to dry the contacts several times on the shell as well as in the device.
Maybe it's also the acid which changes the conductivity. Today, rinsing and drying the contacts on the shell has helped. Chance?

Greetings!

Hello together,

I also know this problem and had already posted a contribution here about a year ago. See here: /forums/...showtopic=14291

Nothing has changed so far and it just annoys!

Greß

Andreas

Hello dear Miele users,

I am at home myself a user of a Miele CM 5200 and have a lot to do with such devices at work. These tips help with all devices of the series CM5.

If the problem occurs that during descaling again and again "empty drip tray" is indicated the solution is quite simple. Usually this message appears after the collecting tray has been emptied for the first time. In this case, a small amount of the descaling agent has run over the contacts. As already assumed here, the descaling agent is an electrolyte and has a higher conductivity than water. To solve the problem, simply rinse the contacts with clear (if possible lukewarm) water for 5-10 seconds, without drying the contacts.

The descaling program should then continue as normal.


The second possibility that this problem occurs is a contamination of the contacts with the coffee sludge that forms in the collection tray. In this case it is best to clean the collecting tray thoroughly before descaling. The corner with the contacts is the most important. If possible, clean this corner down to the smallest crack with an old toothbrush.
The sludge that forms in the collection tray when the coffee is being dispensed acts like a sponge and draws the liquid (water or decalcifying agent) to the contacts, thus creating a conductive connection.
This also helps if the message "Empty collection tray" appears during normal operation.

Not a general tip on decalcifying itself. It is very important to read the BDA (instruction manual) carefully before use. Many users have the problem that the decalcification hangs at 3 minutes or that it takes a very long time.
In this case too much water was added to the water tank at the beginning of the first decalcification cycle. The device has no idea how much water has been put into the water tank and it assumes that it is the 500ml specified by the manufacturer. If the decalcification is carried out according to BDA so with the 500ml in the first cycle then the time data the device outputs are also correct. If of course you get the idea more water helps more then the decalcification process takes just 3 times as long but the device does not show it.
Only as a note, a lot does not help much when decalcifying, on the contrary even. If the descaling agent is diluted too much, the efficiency is reduced and instead of dissolving the lime in the machine, it is only softened. As soon as the cleaning program is carried out or coffee is made, the lime is rinsed into the valves and the machine stops working.
And then only the customer service can do something.


Finally another info, it is correct that the descaling liquid does not run over the coffee outlet during the descaling process. The device is not defective or programmed incorrectly. The fact is that the brewing unit usually consists of a material which is not compatible with the acid and which starts to dissolve when it comes into contact with the decalcifying agent. However, you can be sure that the water system will come into contact with the descaling agent right down to the last corner and if it is carried out correctly you will also enjoy your Miele CM in the long run.


I always wish all users a good morning coffee...

Best regards MieleTechy

Does anyone know the secret key combinations where you can see how many Tasen have already run down?

.....after reading these valuable tips, I was able to run the decalcifying program on my Miele CM5200 without any problems.
By the way, it was the first decalcifying program, as the machine is brand new.
But what I noticed was that the machine has been booming and vibrating since the first coffee was brewed.
I have no idea whether this is normal for Miele. I can only draw comparisons with Krups, Jura, Bosch. Those were "normal" noises.
Has anyone had the same experience?
Greeting Andy

Nope, same volume as always!

Thank you very much for the manual. I already thought that my CM5200 is defective.

A thousand thanks for the valuable tips, contacts of the drip tray washed lukewarm for 10 seconds, now the descaling is running again and the machine does not show in a tour, empty drip tray, would not have thought that it continues so easily. I am relieved and very grateful for the extremely helpful tip. I can only say THANK YOU:

Hi all,

We have a cm6300 and are also stuck in the descaling - "empty the saucepan" loop.
The flowmeter is smooth as well as the hoses clean.
Does the cm6300 drip tray have contacts as well? I can't find any and this is very clean now as well as the whole tray chute.
Or is there any others I can check dorr?

Great information. I picked up a used CM5200 yesterday. It was clean outside, but very messy inside. After "thoroughly" cleaning everything using a toothbrush, it is now super clean.

I have read so much about this unit before purchasing. However, missed that part that said to only use .5L in the water tank.

I ran the descaling process with too much water and did not use a tablet. I thought because I didnt use a tablet, it was sensing not being cleaned and tried to unplug the unit 3 times with not luck until I read the part about he water.

It was stuck in the 3 minute mode with about .25L of water. I did not take the tank out, but only added .25L of water and it kicked the read 2 minutes remaining. It said to add more water, so I did, just enough for it to turn on then it read 1 minute remaining.

More water again, then it finished its cycle.

First cup of coffee and express were perfect!!!

Thank you and love this machine.