Message 'Empty trays constantly displayed, although trays were emptied

check the water supply an filter

Hi all, I have the exactly same problem on my Gaggenau CM470 however the drip tray is clean and the contacts in the back is also 100% clean.. I wonder if its possible to disable the sensor/switch on a CM470 ?

Check if the paper tray has enough amount of paper in it. If it has, check if the paper guides are correctly placed and is set to the correct media size.

The waste bin full error can occur if the waste bin was not removed from the machine for over 10 seconds when it was emptied. Please remove the waste bin and wait for a full 10 to 20 seconds before replacing the Waste bin.

If the message still displays turn off the machine and leave it off for 1 minute then turn the machine back on.

Then run software update to make sure you have the latest OS updates.

Then delete the printer and re-add the printer.

HI
This is probably your solution.
http://www.fixya.com/support/t9715819-39_dregdrawer_full_39_message_but

I had the same problem and had success with cleaning the contacts in the back of the machine with a small nail file/emery board. I found that the contacts that are inside the machine had a little calisification on them. Once they were cleaned up no problem.

You need to run the Decalcyfying program. Push and hold the button with the symbol that looks like a tube with small dots inside. You will get the message empty tray and empty grounds. Do so, and put everything back. The message Solvent or Agent in tank will be displayed. Meassure up 700ml water in a container, put 3 Descaling tablets in the water and let it be completly desolved before you pour this into the empty watertank. It`s very important that you don`t use more liquid, this will make the program run forever. When the solvent is in the tank, push the buttoun again, and the program starts. After a while (20 minutes or so) you will be asked to empty tray/grounds again and to fill the watertank. At this point you can fill up the watertank, this will not affect the running of the program. In the end, you must empty tray/grounds again, and after this the machine is heating up and ready to use. Good luck!

there's something wrong with the paper sensor

aye that is true if you click the coffe making button directly after you have had it out you will be able to make a cup, as the machine has a 2 second response time.

Ok here is what i think:
As it registers the driptray I dont think its the sensor to it.
More i would think that its the CPU card that is not responding to that its clean.

I am sry but I have to ask this:
When it says emptie the driptray are you actually taking out the container that is located under the brewing unit, and not the "drip tray" were you put the coffe mugs?

Also when i think i have a sensor problem I allways take out everything. Brewing unit, dripwater container, dregbox, and the watercontainer. and have it out for atleast 2 minutes ( clean it under the mean time) and put it back again.

As I dont have the machine infront of me i cant be certain:)

While tray 3 is detachable, when I remove it from my 2430dtn the printer won't display tray 3 options in any menus, so it looks like your printer recognizes that it is there.

The micro-switches that detect "open drawer" or "no paper" in tray 3 may be malfunctioning or the electrical connector built into the top of tray 3 may need cleaning.

(or, tray 3 may be out of paper <wink>)