Coffee Makers, Troubleshooting Coffee Makers

Keurig K-Supreme Plus Troubleshooting: Here are a Few Common Problems and Solutions!

Written by

Erica Cervenkova

Coffee Holli Top Pick

The Keurig K-Supreme plus is a coffee lover’s dream. The machine comes packed with new technology designed to get the best out of your coffee grounds.


This means it falls prey to a unique list of problems that require foreknowledge. Keeping that in mind, here is how you can troubleshoot your Keurig K-Supreme Plus.

Troubleshooting Your Keurig K-Supreme Plus

The Keurig K-Supreme plus is a very useful coffee maker. But it may develop issues that make it unusable. Some great examples include overheating and shutting off, not brewing properly, refusing to come on, producing lukewarm coffee, and automatically turning off and on.

Keurig K-Supreme Black

6 Keurig K-Supreme Troubleshooting Methods and Fixes


The Keurig K-Supreme comes packed with a long list of brewing settings that allow users to customize their coffee fully.


As such:

The coffee maker may overheat if water isn’t flowing into the machine.


Your Keurig K-Supreme plus was built with a fail-safe that shuts the machine down when it goes beyond a certain temperature. It’s a major reason your Keurig keeps shutting off.


This protects any temperature-sensitive parts and contains the damage done due to overheating.


You can fix this problem by checking the water flow within your coffee maker. Make sure nothing stops water from getting into the machine from the reservoir.

That is:

Change the water filter, descale the machine and ensure the pump is working fine.


Here is how you can descale your coffee maker.

  • Step 1: Unplug your Keurig K-Supreme Plus.
  • Step 2: Carefully detach the cold water reservoir.
  • Step 3: Mix your choice of descaling fluid with water and pour it into the reservoir.
  • Step 4: Plug your K-Supreme Plus back into the wall and start a normal brew.
  • Step 5: Pause the brew mid-way and let it sit for at least ten minutes.
  • Step 6: Start the brew once more and let it run its course.
  • Step 7: Fill the reservoir with soft water and brew again.
  • Step 8: Repeat this process until the water coming out is clear.

It should take an hour to descale your machine properly, and it should be working fine right after. This should deal with the overheating problem.

2. K-Supreme Plus Not Brewing Properly

The brewing process has two major phases. It needs to preheat water from the reservoir before it can start making your cup of coffee.

Heating Element Keurig


If either of these phases is interrupted, your K-Supreme Plus will not be able to brew properly.

As such:

You need to ensure that water flows into the internal reservoir. You can do this by checking the reservoir filter from time to time and descaling your machine regularly.


You need to give your K-Supreme enough time to preheat the water in the internal reservoir. The water needs to be piping hot before the K-Supreme Starts brewing.


If the preheating process is interrupted, you are left with a cup of lukewarm coffee that may have coffee grounds in it. Nobody wants that.

3. K-Supreme Plus Isn’t Coming On

This is the most common problem new users of the K-Supreme face. You may not fully understand how the K-Supreme works yet, and need to read the manual.


Your Keurig K-Supreme refusing to power on could pose a real problem. You can’t brew if the machine won’t come on.


Check that your K-Supreme plus is properly plugged into a power outlet. If it still doesn’t come on, try a different power outlet.


There could be a problem with the power in a certain room in your home. Your Keurig K-Supreme Plus may come on if you try an outlet in a different room.


Hold down the power button when trying to turn it on. It may take a few seconds for your K-Supreme to light up.


If your Keurig won’t turn on after trying these quick fixes, kindly contact Keurig customer service. They will hook you up with a new one if necessary.

4. K-Supreme Plus Automatically Turning Off and On

A few features in your machine could be responsible for tripping it off and on.


Your Keurig K-Supreme Plus water reservoir has a small magnet at the bottom that communicates the water level to your machine.


Your Keurig may trip off during brewing if the magnet isn’t seated properly. This is because your K-Supreme plus won’t be able to tell the water level within your reservoir.


You can remedy this by removing your water reservoir and replacing it correctly. Make sure it can’t be budged after sitting it back in place.


If your Keurig keeps shutting off after you’ve tried everything we’ve mentioned, then it may be time to call in the big guns. Reach out to Keurig’s customer service for further assistance.

5. K-Supreme Plus is Making Lukewarm Coffee

You may think this is a problem that is beyond your ability to fix. But some small issues may be causing your Keurig not to heat.

For instance:

Obstructions in your machine may cause it to dispense lukewarm coffee. Try cleaning the K-cup holder and the needle. This may fix the problem.

Keurig The Entry and Exit Needles


The heating element in your coffee maker is responsible for making that hot cup of coffee you desire. It’s not something you easily fix.


That’s where Keurig customer service comes into play. They can help you troubleshoot the machine and fix the heating element if necessary.

6. K-Supreme Plus Won’t Come On After Descaling

There’s no need to panic if your Keurig K-Supreme Plus won’t come on after you descale it. The situation may not be as dire as you think.

You see:

You are meant to reset your coffee maker after descaling. This gives the machine enough time to rest and clear any minor electrical faults it may have incurred while you were cleaning.


To rest your Keurig K-Supreme, follow the steps below.

  • Step 1: Unplug your coffee maker and carefully remove the water reservoir.
  • Step 2: Set both parts aside and let the machine sit for at least 30 minutes.
  • Step 3: Reassemble the machine once the time has elapsed and plug it back in.

Your K-Supreme Plus should work fine after a good old-fashioned reset.


Your K-Supreme is meant to offer you more options when making your morning cup of coffee.


It may incur one of the following common problems.

  • K-Supreme Plus overheating and shutting off.
  • K-Supreme Plus not brewing properly.
  • K-Supreme Plus isn’t coming on.
  • K-Supreme Plus automatically turns off and on.
  • K-Supreme Plus is making lukewarm coffee.
  • K-Supreme Plus won’t come on after descaling.

Most of these issues have simple remedies. However, you can always ask Keurig for help if the problems persist.


We hope you found this guide helpful. Are there any problems or solutions you think we missed? If so, let us know in the comment section below!

Frequently Asked Questions

How Do I Reset My Keurig K-Supreme Plus?

You can reset your Keurig K-Supreme Plus by following the standard reset protocol for all Keurig coffee makers.

To do this, Unplug the machine and let it sit for thirty minutes to an hour. This should clear whatever minor problems you may be having.

Why Did My Keurig K-Supreme Stop Working?

Your Keurig K-Supreme is sensitive to slight changes. It may stop working if it suffers the brunt of a power surge or if the water reservoir is seated incorrectly.

Thankfully, you can usually get it to work by resetting it and putting it back together correctly.

How Do I Unclog My Keurig Coffee Maker?

You can Unclog your coffee maker by running a cycle with a mixture of descaling solution and water. Make sure the K-cup holder is empty.

In extreme situations, you can force water into the passage using a turkey baster. Make sure to rinse out the machine properly after using the descaling solution.

Erica Cervenkova
Coffee Connoisseur, SCA Member

As a coffee connoisseur and member of the Specialty Coffee Association, I am dedicated to understanding the sustainability of coffee pods and the impact it has on the environment. My expertise lies in the realm of capsule coffee machines, from the likes of Keurig and Nespresso to other well-known US brands. I am passionate about sharing my knowledge and helping others make informed decisions about their coffee choices. Whether you're a coffee enthusiast or just looking for a new way to enjoy your morning cup, I'm here to help.


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