K duo essential. All 5 lights in solid

What fixed mine was.. I unplugged it and took the tank off and emptied it.. then plugged the unit back in with the tank off. Then it started to try and fill so I reinstalled the tank and refilled it with water.. everything went back to working properly.. I hope this helps someone else at 5 am ..

My husband’s did the same thing and we couldn’t figure it out. We called Keurig and they couldn’t help either. My father in law fixed it rather quickly. When you open up the Keurig where the lights are, where they connect, it was loose. We don’t know how it happened, but he just tightened it up, and it works perfectly fine now.

There were a lot of people offereing suggestions. I cleaned and cleaned and cleaned the input needle. Even took the cover off and checked all the wiring and tubes. Everything looked like the day that it came off the assembly line.

Still, my lights would not go off.

Our machine is a K36 with the latte gizmo on the side (that my wife never uses). It has 5 buttons:

Power

10

8

6

"Shot"

Someone suggested this:

1) Plug in the machine.

2) Confirm that all the lights are one.

3) Hold down the power button.

4) Sequentially push the buttons from smallest to largest.

5) Release the power button.

6) Repeat steps 3-5 two more times.

For me, it didn't work the first time. But I kept at it and, lo and behold after about the 5th try the machine started coughing and choking and came to life. Most importantly, the lights went out (except for the power button).

We ran a descaling and my wife now has her coffee machine back again.

I wish that I could tell you exactly what I did, but that's the best that I can do.

And if the person who made the "press the buttons in this order" suggestion ever reads this.... thank you.....