Water keeps running

cheak for blocked and run some clean hot water ferst .see water flow be for useing capsule if its blocked or partly blocked the water will go in the waist bin.

You must re press both buttons at once again sow you will remove mashein from descaleing mode

Please see http://www.fixya.com/support/t14787831-nespresso_u_all_lights_flashing_pod for previous answer, or see troubleshooting at http://www.nespresso-us.com/media/product/PDF/38manual.pdf

Run vinegar through it

Try running vinegar through instead of water. Then after you finish with vinegar, run clean water through, then try with coffee and see how it works.

We had the same problem and were ready to return the device when we were able to fix it. Here is what we did:
1. Fill the water tank all of the way and place in machine
2. Let the tank sit in position for a few hours (we let ours sit for 3)
3. Run the descaling option
4. Run a few cycles of the "longo"
5. If the machine is still not working repeat the process (Ours started to run after the 2nd cycle)

It just appears that the pumps are shipping with air in them and needs patience to get it out. Once you get it going though you won't regret it :)

The instructions for your Nespresso LeCube 250 can be downloaded here:

http://www.nespresso.com/fileadmin/ca-en/_img/manuals/NES_08_00_EN_Nespresso.pdf

The flashing light may indicate a problem with the heating system and proper water temperature is not being reached. Have you descaled your machine?

You may wish to seek guidance from Nespresso: 1-800-562-1465

I opened mine when this did this - it also happened to my second Magimix Nespresso Manual machine. A short pipe carrying pressurized water had burst. I called Nespresso . parts were not available and they offered me a new half-price machine. We are talking a 4 inch piece of plastic tubing here. Shame on you Nespresso for encouraging me to throw what is otherwise a fine machine....

THE MANUAL TELLS YOU NOT TO USE VINEGAR ON THESE MACHINES. THEY HAVE A DESCALING KIT THAT WILL REMOVE THE HARD WATER LIME BUILD UP. LOOK UP NESPRESSO DESCALING KIT AT NESPRESSO.COM

Call the Nespresso Club, they will hepl to solve it in no time
0800 442 442
Good luck
Frog