11 Keurig K-Duo (Plus and Essentials) Problems Solved

In this article, we are going to cover all the common problems and their solutions that you may face with your Keurig K-Duo, K-Duo Plus, or K-Duo Essentials coffee maker

We will go through all the issues and their step-by-step solutions, making it easier for you to understand all the steps and try them to fix the problem you are facing with your Keurig coffee maker. 

Common Keurig K-Duo Problems

It has often been seen that people who use the Keurig K-Duo Coffee Maker have to face all these problems, including, the coffee machine not brewing or pumping water, The lid not remaining closed, and I couldn’t prepare a full pot of coffee.

Other problems include a leaking carafe while pouring, the “Add Water” light remaining on, and the “Descale” light failing to turn off.

In the following article, I’ll go through all of these issues and more!

Won’t Brew And Not Pumping Water

Do you have problems with your coffee maker not distributing water properly? Calcium accumulation from hard water is most likely the issue.

In order to solve this issue, you should have these materials: Vinegar, Turkey baster scissors, and water

Follow these steps to resolve the issue:

  1. Examine the water dispenser: Click the ounce or cup button on your coffee machine. If you observe that the machine is not delivering the right amount of water, there could be an issue with the water flow.
  1. Find the water reservoir nozzle: A little nozzle with springs is located at the bottom of the water reservoir.
  1. Unclog the nozzle: Using a pair of scissors, carefully press down on the springs just a few times. This is going to help in the removal of any obstructions that may be blocking water flow.
  1. Flush the system: fill water in your turkey baster. Then, place the turkey baster in the nozzle’s base and shoot water into it strongly. This should be done on all three sides of the nozzle. This will remove any scale buildup that has accumulated within the machine.
  1. Check for debris: After flushing the system, you may notice tiny particles floating in the water. This indicates that the calcium accumulation has been removed.
  1. Test your coffee maker: Turn your coffee machine on and check that the water flow has stopped or not, If it’s stopped, then your coffee maker will now work correctly.

Always remember that in order to stop clogging, you need to regularly clean your machine with the help of vinegar, at least once a week. This is especially crucial if your area has a hard water level.

The Lid Won’t Stay Closed

If the lid is not closing in your Keurig K-Duo coffee maker, then follow these steps to solve this issue:

  1. Puncture the needle and clean the area surrounding the K-cup holder: Coffee leftovers or dirt might prevent the lid from closing fully. Unplug the machine, take out the K-Cup holder if suitable, and with the help of a soft brush or cloth, clean the area carefully. Before putting back the K-cup holder, carefully rinse it with warm water and dry it.
  1. Check for any loose or broken parts: Look for any signs of wear, damage, or loose pieces around the lid and the K-cup holder. See your user manual for repair or replacement instructions, and buy new parts if required.
  1. Make a hole in the K-cup: While brewing, too much pressure within the K-cup might cause the lid to pop open. Before using the K-Cup, make a hole in it to reduce the internal pressure.
  1. Clean the locking mechanism: Coffee grounds or dirt in the area of the lid or the locking mechanism could stop the lid from closing properly. Clean the area surrounding the lid as well as the locking mechanism, and clean the needle with the help of a cloth or a brush.
  1. Contact Customer Support: If the problem remains after following all the steps, then contact  Keurig customer support or a trained technician for guidance. 

Regular maintenance and the use of suitable K-cups can help prevent future lid difficulties. Ensure a smooth coffee-making experience. For more details on this issue, see my solution guide for the Keurig lid not closing.

Won’t Brew A Full Pot

The problem with the Keurig K-Duo not making a full pot or the carafe side not working arises because of the coffee basket switch, blocked tubes, or the requirement for descaling. Follow these steps to fix this issue:

  1. Add more weight to the filter, like small ornamental stones, to fix the coffee basket switch.
  1. Unclog the tubes within the coffee maker by forcing water through the tubes from the water reservoir with a turkey baster, straw, or syringe.
  1. Try to descale your coffee maker every 3 months to clear out mineral buildup and enhance the water flow and taste of the coffee.

We have published an in-depth article on what to do if the carafe side isn’t working or doesn’t produce a full pot, which you can read to gain more information on the issue.

Leaking Carafe When Pouring

There is a thin dividing line in the spout, leading it to drip. To fix this issue, use 220 grit sandpaper to sand down this dividing line carefully. 

There is a small piece of plastic on the pot’s handle side that is stopping the lid from shutting entirely. You can remove this plastic by breaking it off with some pliers.

We have created a more in-depth explanation on how to repair the leaky K-duo carafe.

Add Water Light Stays On

There is only one light in K-Duo Essentials for both indications of add water and descaling. In the K-Duo Essentials, a fixed glowing light indicates that the machine needs to be descaled, and a blinking light indicates that water needs to be added.

The new K-Duo will display the term “add water” on the screen.

(If the descale light is causing the issue, Scroll down to see how to resolve that issue.)

If the add water light continues to blink after you’ve filled the tank, the problem might be a clogged vent opening. To solve this, Fill the reservoir with water and pull it up and down around 20 times to drive water into the pipes and maybe unblock the vent outlet.

If it fails, then try unclogging the vent entrance. Here’s how to do it:

  1. Unplug and turn off the coffee maker
  2. Open the top cover of the coffee machine, and be careful of the sharp needle within.
  3. To remove the top cover, lift both tabs at the same time.
  4. Find the vent opening in the rear.
  5. To remove any impediments, use a vacuum with a tiny attachment.
  6. If a vacuum is not available, use an air gun with caution, But keep in mind that it may blow the clog deeper down the vent.
  7. Reinstall the top cover by sliding it back in first.
  8. Snap the tabs into place after aligning the front portion.

We have posted another article about a few more things you may try that aren’t specific to the Keurig K-duo but might help with the add-water light.

You will be able to resolve the Add Water light problem on your Keurig K-Duo coffee machine with the help of these steps. If the problem continues, then you should contact Keurig’s customer support.

Descale Light Won’t Turn Off

If you have recently descaled your Keurig K-Duo but still have the descale lights appear, then don’t worry about this; you can simply fix this issue by following the steps below.

  1. Turn on your Keurig K-Duo coffee maker.
  2. Click and hold the 8oz and 10oz buttons at the same time for 5 seconds.
  3. The descaled light is now supposed to be turned off.

Remember that this procedure just disables the descale light. It is critical to descale your Keurig K-Duo on a regular basis in order to retain peak performance. Here are complete instructions on how to descale your Keurig K-Duo.

Grounds In Coffee

When using a Keurig K-Duo brewer, if you get coffee grounds in your coffee, There are several techniques you can use to address this issue.

  1. Without a K-Cup, run a small cup brew cycle: To prepare the equipment for brewing, open and close the brew basket. On the Keurig coffee machine, select the smallest cup size. Run the brew process to remove any additional ground coffee or coffee debris from the brew basket. This procedure should be repeated several times to ensure a complete cleaning.
  1. Take out and clean the brew basket: Remove the brew basket by gradually pressing upward. Using hot water and soap, clean the basket. Take out the bottom section of the brew basket by turning it off. Using a paper clip, remove any remaining coffee grounds from the needle apparatus. To get rid of any remaining grounds, rinse the brew basket and needle with water. press on the bottom half of the brew basket to reassemble it, matching the white arrow with the holder locator, then insert it back into the machine.
  1. For reusable K-Cup alternatives, use coarse-ground coffee: If you are using reusable K-Cups, use coarse-ground coffee. Coffee that has been finely ground can get through the filter and wind up in your brewed coffee.
  1. On K-Cups, look for the Keurig seal: Due to numerous patent difficulties, there could be unlicensed K-Cup options on the market. Check that the type of K-Cup that you’ve got has a Keurig seal and is intended for use with a Keurig single-serve brewer.

By using these procedures, you will be able to keep coffee grounds out of your brewed coffee and have a great cup of coffee every single time.

Not Hot Enough

If the coffee brewed with the Keurig K-Duo is not hot enough, you need to follow these steps:

  1. Preheat the cup: In order to preheat the cup, you need to run hot water within the machine without a K-cup. 
  1. Add hot water: Add 2 or 3 spoons of hot water to your coffee after brewing it.
  1. Preheat the K-Duo: Warm up the machine by running a hot water cycle without a K-cup before brewing.
  1. Make use of a milk frother: To avoid chilling the coffee, use a hot milk frother for cappuccinos.
  1. Descale the K-Duo: Descale your machine on a regular basis in order to get the best heating performance.

We have written a detailed article on Keurig coffee is not hot enough

Coffee Tastes Like Plastic

Outgassing is responsible for the Keurig plastic flavour in coffee, where the coffee maker’s plastic components emit gases that get caught in the packaging. Try the following techniques to get rid of the plastic taste:

  1. Rinse with vinegar: Clean the machine with the vinegar mixture and run the mixture through the brewing process within the machine, to clean out other internal parts of the machine. Repeat with water to get rid of the vinegar flavor.
  1. Rinse with hot water: Clean the machine and run the warm water through the brewing process within the machine but without the K-cup. Run until the water tank is completely empty.
  1. Reusable K-cups: Try to use steel reusable K-cups to help decrease plastic waste and taste.
  1. Rinse with Activated Charcoal: Wash and clean your machine, then go through the brew cycle with a food-grade activated charcoal solution. After that, use clean water to rinse away any leftover charcoal.
  1. Descaling: In order to avoid the plastic-like taste, you need to descale your machine regularly.
  1. Clean Regularly: Create a cleaning plan to avoid bacterial development and keep a nice coffee flavour.

Error Code 1R

What Does Error Code 1R OR FR Mean?

The error code 1R or FR is common on the Keurig K-Duo. A software issue is the reason for the error code. Usually, resetting the Keurig coffee maker solves the problem.

How Do I Fix It?

  1. Unplug the machine
  2. Remove the K-cup from the machine
  3. Reconnect the Coffee Maker.
  4. Remove the lid from the single K-cup side.
  5. Close the single K-cup lid.
  6. Put a mug under the K-Cup area.
  7. Turn on the power supply.

If you see water being distributed, allow some time for the display to go off. If there is no action, the Keurig is most likely damaged.

The procedure outlined above is commonly used to resolve Keurig error code 66.

How Do I Turn The Heating Plate Back On?

Hold the carafe button for about 3 seconds, depending on the model of your coffee maker, the Carafe button will light red or the cup icon will flicker. This indicates that the heating plate is turned on and will remain warm for two hours.

If this doesn’t work right away, try these two alternatives:

  1. Check to see if the water tank on your coffee machine is full. Without sufficient water, the machine may sometimes not switch back on, which prevents the heating plate from turning on.
  1. If the first does not work, then turn off the machine, hold down the Carafe button, and then turn on the machine while still pressing the Carafe button.

Final Words

In the above article, we have discussed all the common problems you face with your Keurig K-Duo, K-Duo Plus, or K-Duo Essentials coffee maker

By following all the steps mentioned in the above article and maintaining your machine regularly by descaling or cleaning it, you can improve its efficiency and its lifespan.

If after following all the steps carefully, your problem persists, then you need to contact Keurig customer support for additional help.

Meet Vishu Yadav, the coffee connoisseur behind repaircoffee.com. With a barista background and a love for coffee, he explores diverse coffee cultures and brewing techniques. Join him for the latest trends, specialty roast reviews, and brewing insights on repaircoffee.com.

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