Krups EA 8080 Coffee machine keep asking to clean the drawer a number of times even thought it is empty. Lastly but the machine indicate code 12. What does this code 12 meaning ?

open the machine, look at the wiring to the water heater. 1 cable is loose in the rubber/PVC cap. you have to solder it again.

Please just contact customer service https://www.krupsusa.com/consumer-services/Contact-us

If it has no water flow check the pump. If it does have water flow then look for a leak or if no leak it's probably the distributor.

Check the water float in the tank, it is common for them to cease floating sometimes. Krups solution is a new tank, my solution is to jam something plastic underneath it to lift it up so that it activates the sensor. Even if tank is empty it will no longer ask you to fill it up.

That is a very uncommon error code. It is not detecting the ejection switch pulse, it may be just a case of dismantling and cleaning and checking the switch operation. It's all internal so you need to remove the housings.

Take it in to your Krups service agent, something is going to need replacing and they are by no means a simple machine to work on. You will fix nothing from the outside, it will need to be pulled apart.

Error code 05 on my krups ea 8260. How to fix it?

No idea but as of this morning I have one on my machine too!