Why Are Keurig Lights Blinking?

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The top Keurig coffee makers combine the convenience of a pod machine with the freedom of customizing tastes and brands. There are plenty of different roasts to keep your morning brews interesting with such a large selection of K-Cup pods on the market.

Furthermore, both in terms of upfront equipment costs and pod prices, Keurig coffee makers are among the most economical versions on the market right now.

However, this does not imply that these are simple devices. You may notice confusing signals, like Keurig all lights flashing.

There are a few reasons for Keurig lights blinking. I’ll go through the most frequent Keurig blinking light alerts and how to solve them in this post. My objective is to get you back to preparing a cup of coffee in the morning as soon as possible!

How Does Keurig Work?

Keurig is a popular single-serve coffee machine because it makes coffee fast. Simply insert a K-Cup, press a button, and voila! Is it, however, Instant Coffee only because it makes coffee instantly?

Brewing coffee with a Keurig K-Cup is as quick as instant coffee; the machine pushes hot water through the K-Cup, resulting in an excellent cup of coffee in under a minute. However, this is where the ambiguity arises. K-Cups are similar to instant coffee in terms of convenience, but they are not instant coffee.

Many different coffee manufacturers provide K-Cups, including Starbucks, Green Mountain, Dunkin’ Donuts, Tully’s, and many others. For the most fantastic cup of coffee, these K-Cups are filled with the right amount of coffee ground (natural coffee ground that doesn’t dissolve in hot water).

Each K-Cup contains the following components: An airtight seal that locks in the freshness of coffee grounds and a high-tech filter that keeps the coffee grounds out of your cup.

When you click the Brew button on your Keurig coffee maker, it pushes hot water at the correct pressure and temperature through the K-Cup. And that’s how you obtain a cup of hot coffee in a matter of seconds.

How To Use A Keurig Coffee Machine Correctly

Although using a Keurig Machine is simple, there are a few things to keep in mind to guarantee that your cup of coffee is as delightful as possible.

Make sure your pod isn’t too full

As tempting as it may be to pack your pods with more grinds to produce a more robust cup, doing so will just cause your machine to become clogged since the water will not be able to pass through the excess grinds.

Fill to the line on the inside of your pod, and don’t add any more. (If you’re a “single cup here and there throughout the day” type of person who likes their coffee strong, a pour-over cone is a good option.) It makes a rich, delicious cup and offers more customization possibilities than a Keurig machine.

Make sure your coffee is adequately ground

While coffee grounds for a drip machine may be used in a Keurig, somehow coarse coffee works better. If you ground your coffee too fine, you’ll get sediment in your cup, but if you crush it too coarse, the water will rush through the coffee too rapidly, extracting less taste. The sweet spot is just in the center.

Use your machine’s smallest cup setting

The majority of Keurig machines can create a 6, 8, or 10-ounce cup of coffee. The amount of grinds you use does not increase as you raise the cup size; instead, you use more water, resulting in a weaker cup. Brew a 6 oz cup for the best flavor, and if you want more, refill your pod with new grinds and prepare another.

What Are The Reasons For Keurig Lights Blinking?

The source of the Keurig all lights on is because the machine is unclear of what to do next. This is frequently caused by a disruption in the task it was doing. For example, an interrupt might be caused by a power outage, a sensor signal failure, or simply a bad day!

Most people are unaware that behind all that plastic lies an 8-bit PIC Microcontroller that controls all operations. And this device may get a little worked up at times, which is why the flashing or blinking lights appear.

Keurig All Lights On

If all of your Keurig’s buttons (add water, heat, and medium cup size) are flashing, the problem is most likely the charcoal filter in your tank. A needle problem, on the other hand, is a possibility.

Keurig Add Water Light

Start by emptying the water reservoir and cleaning it with a soft cleanser and a sponge or cloth if the ADD WATER alarm is on. Next, inspect the valve at the bottom of the water tank by flipping the reservoir over. Make sure there aren’t any obstructions.

Also, ensure there is no obstruction at the valve where the tank joins at the bottom of the machine. Fill the tank to the MAX water level, but not more than that. When the reservoir is filled, make sure it’s firmly placed to its base.

Keurig Descaling Light

Minerals in the water that flows through your machine cause limescale to build up in your machine. This can lead to stumbling obstacles in the future. You’ll need to descale your machine to get rid of this build. The light should turn off automatically once you’ve completed a descale cycle. The K Duo model’s 8 oz and 10 oz buttons must be pressed and held for a few seconds.

Watch this video for a thorough guideline on how to descale a Keurig: How To Descale Your Keurig® Brewer

Keurig Troubleshooting All Lights On

If your Keurig® K-Cup® brewer’s Add Water, Heat, and Medium Cup lights are blinking, try the following troubleshooting tips. Remember that a mug and a measuring cup are required.

  • Step 1: Check that the Cold Water Reservoir is correctly positioned. To guarantee proper alignment, remove and reinstall the Cold Water Reservoir.
  • Step 2: Brew the 6 oz. or 8 oz. amount using simply water in a measuring cup. Continue to step 3 if the expected amount of water was not dispensed. Otherwise, your troubleshooting is complete, and you’re ready to brew!
  • Step 3: Do you have a water filtration system? If so, remove the Water Filter and brew a water-only brew (no pod) into a measuring cup. If the brew doesn’t turn out, move on to Step 4.
  • Step 4: In a measuring cup, prepare three different water-only brews (no pods) on the 6 oz. or 8 oz. size. Was the correct quantity of water delivered in the last brew? To establish the precise flow amount, use the measuring cup.

After a successful troubleshooting session, you’re ready to brew! Please call the Keurig Customer Service department at 1-866-901-BREW(2739) for further information.


We hope these tips have helped you fix the Keurig lights blinking issue, get a cup of coffee, and out the door on time, even on the most challenging morning.

Of course, if these basic fixes fail, Keurig not working all lights on might be the consequence of something much more severe. Therefore, if the machine is still under warranty, we recommend contacting Keurig for a professional examination or returning it to the store where it was purchased.

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