Cup light flashing not sensing cup

lights are flashing because you need to decide how big of a 'cup' you want to brew. When you push one of the flshing brew buttons, the unit will brew and the lights will then stay on steady until you reopen and add a new K-cup.

It's time to descale your brewer. Run a full reservoir of pure white vinegar through, and then a full reservoir of water, "brewing" and dumping one cup at a time. You might have to do two reservoirs of vinegar if you've never rescaled it before.

I had this problem too.
I just pressed the small brew button; it pulled some water from the reservoir and heated it but nothing came out. Then I opened and closed the top cop thing and both the cup sizes were flashing and it worked like normal again.

Hi,

Here is a tip that I wrote that will give you some things to try that will helpyou get your Keurig coffee brewer workingagain.

Keurig CoffeeBrewer not making a full cup of Coffee
heatman101

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Hi,

Here is a tip that I wrote that will give you some things to try that will helpyou get your Keurig coffee brewer workingagain.

Keurig CoffeeBrewer not making a full cup of Coffee
heatman101

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Open the brew mechanism. Opening the brew
mechanism will initiate the heating of the water and the
HEATING light will flash.
2 Place a clean cup on the cup stand, adjusting the height of the
stand up or down so that the rim of the cup is close to the
brew mechanism.
• To adjust the cup stand, insert your finger in the center
of the stand, lift and turn.
• To avoid spilling over, please choose the right sized cup for
the drink you are making.
3 Position your choice of T-DISC on the T-DISC holder, label facing
down. Firmly close the brew mechanism by pressing the clamp
down until it shuts. The HEATING light may flash again as the
machine heats the water to the required temperature for
your drink.
4 When the AUTO light illuminates, press and release the start/stop
button. Brewing will start automatically. There may be a short pause
during brewing; this is normal and is designed to draw out the full flavor
of your drink. The AUTO light flashes throughout the brew cycle. When
the machine has finished brewing, the indicator light will move from
AUTO to MANUAL and then, after a delay of 30 seconds, to HEATING.
5 Open the brew mechanism, remove the T-DISC and discard.
Your drink is now ready to be enjoyed.
You can prepare the next beverage right away by repeating
steps 2 - 5.

Pot needs cleaning. Fill reservoir with 4 cups of vinegar. Press the SELECT button until the red CLEAN indicator light turns on. Let it perk through. It will take 45-60 minutes. It brews a few cups, stops and then should brew the remainder of the vinegar. When the cycle is complete the light will burn off and the coffeemaker will turn off. Discard vinegar solution and run a couple of pots of clear water through. Hope this helps.

Pot needs cleaning. Fill reservoir with 4 cups of vinegar. Press the SELECT button until the red CLEAN indicator light turns on. Let it perk through. It will take 45-60 minutes. It brews a few cups, stops and then should brew the remainder of the vinegar. When the cycle is complete the light will burn off and the coffeemaker will turn off. Discard vinegar solution and run a couple of pots of clear water through. Hope this helps.

What to Do If Your Keurig Won Brew Cup Barista