Question about Keurig B50 Coffee Maker

2 Answers

Will not brew a full cup

Will only brew a half cup even when full cup button is pushed

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  • kathleenhowa Dec 23, 2008

    We have four of these machines and none will serve a full cup.

    The water seems to recycle back into the reservoir. Just a lot of noise - very little tea/coffee. Surely, this is a common problem - the odds of having it occur four times are just too long.

  • Anonymous Feb 10, 2009

    Same thing mine started producing half a cup regardless of wich size was selected

  • hkramb May 26, 2009

    Mine does the same thing, it used to brew full cups and over time got less and less, now barely fills half of a small coffee cup. And the noise just gets worse and worse.

  • Anonymous Mar 16, 2014

    Oster BVSTKG5-033 only brews half a cup

  • Anonymous Mar 23, 2014

    next cup is a full cup

  • Anonymous Mar 23, 2014

    will not make a full cup

  • Anonymous Mar 27, 2014

    keurig is not brewing the full size cup


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There may be an adjustnent that allows more water to flow in the same ammount of brew time!

Posted on Dec 11, 2008

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Mine started off this way, then quit running any water through. I overcame the problem with a reusable K-cup. They are available online and at some national chain stores for about $15.00. It's a little more inconvenient than K-cups, but better than throwing out a $150 coffee maker.

Posted on May 21, 2009

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Why do I get the Add Water error when my reservoir is full? If I am brewing a K-cup it works fine but if I try to brew a K-carafe pack it says Add Water even though the reservoir is full. This is my 6th...

I'm writing this same answer on all issues related to "add water" issues. We just purchased a brand new 2.0 yesterday and were trying to make our first cup but could not get past "add water". Among other instructions Customer Service said the water needed to be luke warm/ room temperature. We even microwaved the water jug for a minute but it didn't work. What did work was filling the reservoir half full of jug water and then adding nearly boiling water until the reservoir was at Max level. I pushed Continue and it began to work. I used a digital thermometer and saw the water temp was 113 degrees. I hope this helps you.

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Do not know how to program fresh start oasis full button over fil

Remove the brew basket and water defuser (sprinkler head) it should come off with a 1\2 turn.
Place your measuring pitcher or empty pot in place.
Turn the main power switch off in back of unit.
Press and hold the Brew(full pot) button.
While holding the Brew(full pot) button turn the main power button in back to on.
Once the red light flashes over the Brew(full pot) button release it, then press it once to start the brew cycle.
Let it flow until desired level in pot or measuring pitcher.
Press the Brew(full pot) button once to Stop.
Press the Brew(full pot) button once again to lock the settings into memory. Memory will store the settings even if machine is unplugged.
Half pot button is automatically set.

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Finally, I got my coffee pot to run through without stopping several times. To fix it I had to run vinegar through eight times! Never before has it taken so many cycles to clean out a pot. It is still spluttering a bit so today I am going to get more vinegar or maybe even CLR and run it through a few more times.

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I have the same problem with the exact same coffee maker I have tried pushing the 1-4 cups button. That worked for a couple weeks, now it is back to only brewing half the water in reservoir whether I push the 1-4 button or not. It is very annoying.

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I was having problems like this and then I read on a different string on this website that people have had success by flushing the system numerous times (sometimes up to six times) with vinegar. I took out the charcoal filter and flushed once with vinegar but only saw a small amount of improvement. I was out of vinegar so I used Lemishine mixed with water and it went from making one cup to making a full pot with one flush.

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Wont brew a full pot

I had the exact same problem with my machine making 1 cup at a time.

Here is the solution: 

1. make solution of 1 part vinegar & 2 parts water.

2. pour solution into resivoir and set for 2 hours

3. run solution through machine (yes, you will have to stand there and keep pushing the buttons).

4. take same solution (now very hot) and run it through machine 5 or 6 times

5. make fresh solution and continue process until machine runs full cycle.

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