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Sally Anderson Posted on Feb 12, 2020
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My Keurig Model 840 coffeemaker heats water but when I push the lighted blue button it shuts off and does not brew

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jws1013

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  • Master 1,713 Answers
  • Posted on Feb 13, 2020
jws1013
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Joined: Apr 08, 2009
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Buy a new one. The fix will cost more than the unit is worth.

5 Related Answers

txkjun

John Weathers

  • 409 Answers
  • Posted on Jan 12, 2009

SOURCE: coffeemaker will not brew a full pot

Try cleaning it with pure vinegar. 3-4 times just keep running it through the machine.

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Anonymous

  • 58 Answers
  • Posted on Jun 24, 2010

SOURCE: Keurig shuts off as water heats and as coffee is brewing?

Contact Keurig customer service at 1-866-901-BREW (2739) -- everyone i have spoken to was very kind and helpful

BarrettDenCo

Barrett Palumbo

  • 1772 Answers
  • Posted on Dec 18, 2010

SOURCE: I set the brew size on the Keurig, but can't

the blinking blue lights, means the water level is low...BUT sometimes it sticks, if the tank is not clean..its that round disk, on the side of the water tanks that sticks..try resetting the tank..set set the default brew size..goto menu, then goto brewsize to set the default size...when it says ready to brew..then you can select the size...

Anonymous

  • 43501 Answers
  • Posted on Jun 10, 2011

SOURCE: Keurig Model 831 one-cup brewer

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

Anonymous

  • 43501 Answers
  • Posted on Sep 05, 2011

SOURCE: Keurig B66 model - "Not Ready" message when I push

Hi,

There is air in the lines and it is blocking the water flow...
Here is a tip that will help you getyour Keurig to prime...

Keurig CoffeeBrewer will not prime
heatman101-=-=-
=-

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Related Questions:

0helpful
1answer

Keurig shuts off after i push the brew button?
Some of the most likely reasons by which Keurig keeps shutting off while brewing includes:

Machines require Descaling or cleaning.
The bottom of the k-cup is not punctured.
Misaligned magnet in water Reservoir

 In this article , all these reasons are discussed in detail, which might help you
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Jun 25, 2017 • Keurig Coffee Makers & Espresso Machines
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After de-scaling my girlfriend's keurig mini, the 'add water' indicator does not function properly. It always thinks there is water in the heating tank even when I know it is empty. Because of this, the...
You could be correct in your assessment and if so, as long as the device is under warranty it needs to go back for servicing. If you open the chambers, the warranty is Void and the device a boat anchor.
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Jan 21, 2014 • Keurig K10 K-cup Mini Plus Coffeemaker...
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Keurig b40 coffeemaker goes thru the motions for brewing, but does not heat the water.
Re set by purging water, fill again, and prime.
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Dec 04, 2012 • Keurig Elite B40 Coffee Maker
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Keurig B40 problems
Clogged ports see page 18 Manual for assistance.
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Feb 28, 2012 • Keurig Elite B40 Coffee Maker
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Keurig B66 model - "Not Ready" message when I push
Hi,

There is air in the lines and it is blocking the water flow...
Here is a tip that will help you getyour Keurig to prime...

Keurig CoffeeBrewer will not prime
heatman101-=-=-
=-
Read full answer
May 31, 2011 • Keurig B66 3-Cup Coffee Maker
0helpful
1answer

Cannot get the top cover removed so I can troubleshoot the electronics. All accessible screws removed. Seems to be some sort of catches where the side and top covers come together at the rear. Anybody done...
Decalcification
Decalcification refers to the removal of calcium
deposits which form over time on the metal
parts of the coffeemaker.
For best performance from your Brew Central
Thermal™ Coffeemaker, decalcify the base unit
from time to time. The frequency depends upon
the hardness of your tap water and how often
you use the coffeemaker. The flashing Clean
light will indicate when you should clean your
coffeemaker.
If the Clean light begins to flash when the
coffeemaker is turned on, it is telling you that
the calcium buildup is interfering with the
functioning of your coffeemaker and the flavor
of your coffee. To clean, fill the water reservoir to
capacity with a mixture of ¹⁄³ white vinegar and
²⁄³ water. Press the Clean button. When the self
clean light glows, turn the coffeemaker on by
pressing the on/off button. The Clean light will
shine steadily. The coffeemaker is now in Clean
mode. One cycle should be sufficient to
adequately clean the coffeemaker. When the
cycle is completed and the five beeps sound,
the coffeemaker will shut off. Turn the
coffeemaker ON to see if the Clean light
continues to flash. If it does, turn it to OFF and
then repeat the cleaning procedure with a fresh
solution of vinegar and water.
If the Clean light no longer flashes, turn the
coffeemaker to OFF and then run one cycle of
fresh cold water through the unit before using
the unit again to brew coffee.
Notes on the Clean F unction
Pressing the Clean button cancels all other
settings. If it is pressed accidentally, press it
again to return the coffeemaker to all its
previous settings. Pressing ON/OFF will also exit
the Clean Mode and turn the coffeemaker OF
Read full answer
Mar 21, 2011 • Cuisinart Keurig B50 Single Cup Coffee...
1helpful
1answer

I set the brew size on the Keurig, but can't figure out how to get the lights to stop blinking and make the coffeemaker actually brew me a cup of coffee. I've held down the brew button, thinking that would...
the blinking blue lights, means the water level is low...BUT sometimes it sticks, if the tank is not clean..its that round disk, on the side of the water tanks that sticks..try resetting the tank..set set the default brew size..goto menu, then goto brewsize to set the default size...when it says ready to brew..then you can select the size...
Read full answer
Dec 18, 2010 • Keurig B70 Coffee Maker
0helpful
2answers

I have a keurig b30 and has been working great but now it will not recognize any of my cups so the flashing blue light will not come on to start brewing? none of them are clear and have all worked in the...
I haven't solved the problem, but I continue to disassemble my K30. Most likely points of failure for the blue start light not coming on appear to be a sensor to detect the cup is in place (two small holes on the left/right front edge of the cup holder) or a sensor in the resovoir lid where the blue pin presses on a pressure switch. I did find that the red wire to this switch gets caught in the lid hinge and may be damaged. I will post more if I finally discover the root cause but may just go to Bed Bath & Beyond and buy the resovoir model with a 2 year warranty. Lesson learned. Cheap switches and mechanical devices.
Read full answer
Nov 06, 2010 • Keurig B30 Mini Coffee Maker
5helpful
3answers

Keurig B60 coffeemaker stopped pumping water because I didn't notice there was almost no water left in the chamber and started it--I added water right away but it won't pump any more water out of the...
This morning my Keurig sounds like it begins to pull water then stops. I tried to cut it off then back on. Still didn't work.Removed water from reservoir and K-cup and added pure vinegar. Ran machine several times without filter or Kcup by pressing cup selector several times. You must open K-cup holder and close each time. I had to do this about a dozen times before the water began to draw again. Flushed system by filling water reservoir with fresh water, and brewed just plain water until vinegar was gone.Works like brand new.
Read full answer
Nov 11, 2008 • Keurig B60 Coffee Maker
0helpful
1answer

Continually running/heating
Coffeemakers have two heating elements: a brew element and a keep-warm element. When the water reservoir has run empty, a thermostat switches power from the brew element to the keep-warm element.

The keep-warm element will cause the thermostat to stay in this condition until more water is added [or power is cut off] which will cool it down to switch back.

However, if the keep-warm element has quit working, the thermostat may be reactivating the brew element. With no water in the reservoir, the brew element will heat up till the thermostat trips again, then cool down, etc. This cycle will repeat until power is switched off.
Read full answer
Mar 31, 2008 • Keurig B50 Coffee Maker
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