Light came on to descale, plus wasn't making the correct size cup that was selected (large - making small). Ran 48 oz. of white vinegar thru it yesterday, let it sit over night, then ran cycles of plain water thru it. Still says "descale" and still only brewing "small" cup when largest cup is selected.

I realize you think it does not need descaling to to it 'not being used much.'
However you may have hard water and I would think descaling is definitely worth a try. There might be scale built up on the water level probes in you machine.

Descaling Details are listed below:

Brewer Model: Elite B40 ' Classic B44
Special Edition B60 ' Platinum B70

To begin, you will need the following:
• 48 ounces of undiluted white vinegar
• Large ceramic mug (do not use a paper cup)
• Access to an empty sink

PREPARE
Step 1:
Empty the water in the Water Reservoir.

Step 2:
Disable "Auto Off features."

FILL AND CLEAN
Step 1:
Pour approximately 48 ounces of the vinegar into the Water Reservoir.

Step 2:
Place a large mug on the Drip Tray Plate and run a brew cycle.

(DO NOT USE A K-CUP)

Just press the BREW Button. Pour the contents of the large mug into the sink.

Step 3:
Repeat the brew process without a K-Cup until "ADD WATER"
is indicated.

Step 4:
Now let the Brewer stand for at least 4 hours while still on.

Step 5:
Discard any residual vinegar and rinse the Water Reservoir thoroughly.

RINSE
Step 1:
Ensure the Water Reservoir is filled with fresh water.

Step 2:
Place a large mug on the Drip Tray Plate and water brew cycle. Pour the contents of the large mug into the sink.

Step 3:
Repeat brew process until "ADD WATER is indicated.

Step 4:
You may need to perform additional water brew cycles if you notice any residual taste.

Empty water resevoir. Disable auto off. Pour approx 48 oz of undiluted white vinegar into resevoir. PLace large mug on drip plate, run brew cycle, dump contents of mug in sink. DO NOT USE A K-CUP.
Repeat this process until the add water light is indicated.
Let brewer stand for at least 4 hours while still on.
Discard any residual vinegar in the resevoir and rinse thorughly.
AFTER approx 4 hours...fill resevoir with water.
RINSE:
PLace a large mug on the drip plate and water brew cycle. Pour the contents of the mug into the sink.
REPEAT this brew process until the add water light is indicated.
YOU MAY NEED TO REPEAT THIS "RINSE" PROCESS if you notice any residual taste

It may be time to descale. Most models will give you a message when it's time to have the mineral deposits cleaned.
HERES HOW TO DO THAT...
Empty water resevoir. Disable auto off. Pour approx 48 oz of undiluted white vinegar into resevoir. PLace large mug on drip plate, run brew cycle, dump contents of mug in sink. DO NOT USE A K-CUP.
Repeat this process until the add water light is indicated.
Let brewer stand for at least 4 hours while still on.
Discard any residual vinegar in the resevoir and rinse thorughly.
AFTER approx 4 hours...fill resevoir with water.
RINSE:
PLace a large mug on the drip plate and water brew cycle. Pour the contents of the mug into the sink.
REPEAT this brew process until the add water light is indicated.
YOU MAY NEED TO REPEAT THIS "RINSE" PROCESS if you notice any residual taste.

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

;'
';

Descaling depends the size of the reservoir. I see the B60 but not the B66 at the Keurig site. The two units are apparently the same from searching the support side of the Keurig site: http://www.keurig.com .

For the Mini coffee makers, you use 20 oz of vinegar (2 10 oz cycles). For the larger Keurig units, it takes 48 oz of vinegar.

In either case, fill the reservoir with vinegar and put a large ceramic (12 oz mug for the mini unit) mug on the drip tray. Do not add a K-cup. For the B60 (and probably the B66), press the Brew button. Discard the vinegar after the cycle. Repeat the brew process until Add Water is indicated. Discard the vinegar each time. Then wait 4 hours with the unit on. Discard the remaining vinegar and rinse the reservoir. Fill the reservoir with 48 oz of water and brew several cups without a K-cup until the "Add water" message appears. Discard the water in the mug each time. Repeat the vinegar cleaning if De-scale still appears in the LCD. Run more water without the K-cup if you notice a remaining taste in the coffee after the rinse procedure.

For the mini, fill the reservoir with 10 oz of water, lift the Brewer handle and lower it after 5 seconds with no K-cup in the unit. Press the Brew button. Discard the vinegar after the cycle. After the first cycle, pour the other 10 oz of vinegar into the Cold Water Reservoir. Lift the handle and lower it after 5 seconds. Press the Brew button and wait until the light becomes steady. When vinegar starts to be dispensed, power off the unit. Wait 30 minutes. Then power on the unit and lift and lower the handle again. Then discard the vinegar after the cycle. Next run 4 rinse brew cycles with 10 oz of water each time. Discard the water each time. The unit should be ready to brew with a K-cup after the 4 rinse cycles.

I hope this helps.

Cindy Wells

Sorry to read about your issue.

The brewer should be de-scaled at least every 3-6 months. Scale is harmless, but if left unattended, it can hinder optimal brewer performance. De-scaling your brewer regularly helps maintain the heating element, removable water reservoir and other parts of the brewer that come in contact with water. Better water quality and water heating means a better cup of coffee, tea, hot cocoa or iced beverage. We recommend de-scaling your brewer at least every 6 months (every 3 months if your water has a high mineral content). The de-scaling process involves using 48 ounces of undiluted white vinegar.

Take 48 oz of white vinegar. place in tank. pretend you are making coffee (Do No Use K Cup). let the water fill you mug. then empty that mug. Do it again until tank is empty. then let sit for 4 hours.
Then fill with fresh water to the top. let that tank of water run thru. towards the end taste the water.
If you taste vinegar..use more clean water, until the taste is ok.

I tried to help you. Please help me and Vote/Rate this response. Thanks and good luck

223mmmm2Sorry to read about your issue.

Try this again

The brewer should be de-scaled at least every 3-6 months. Scale is harmless, but if left unattended, it can hinder optimal brewer performance. De-scaling your brewer regularly helps maintain the heating element, removable water reservoir and other parts of the brewer that come in contact with water. Better water quality and water heating means a better cup of coffee, tea, hot cocoa or iced beverage. We recommend de-scaling your brewer at least every 6 months (every 3 months if your water has a high mineral content). The de-scaling process involves using 48 ounces of undiluted white vinegar.

Take 48 oz of white vinegar. place in tank. pretend you are making coffee (Do No Use K Cup). let the water fill you mug. then empty that mug. Do it again until tank is empty. then let sit for 4 hours.
Then fill with fresh water to the top. let that tank of water run thru. towards the end taste the water.
If you taste vinegar..use more clean water, until the taste is ok.

I tried to help you. Please help me and Vote/Rate this response. Thanks and good luck

My keurig did the exact same thing. Stuck on large and wasn't pulling water into coffee maker so it would only dispense a small amt of coffee. I turned it off for about 10 mins. Emptied the reservoir and filled it half way with white vinegar. Ran several cups through and after 2nd brew it ran faster and after the 3rd run with vinegar all the size cup lights came back on. It is working great now. Just empty reservoir with remaining vinegar and rinse. Run a couple cycles of plain water through the coffee maker to rinse out vinegar. I hope this works for you.

I had the same problem, contacted Keurig and they suggested the descale procedure, which did nothing. The brew size was very small, the display would not let me select the size, and water was being pushed back into the reservoir. I was able to resolve the problem however.
First I went through a gallon of white vinegar, without results. Then I did the following:
Went to Walmart and bought "Brew Rite". Tried 8 cup mixture (8 cups of water, two tablespoons of mix), did not work. Being persistant, put in another 8 cups, and when the reservoir was empty of the solution let sit 2 hours while unplugged and then put in clear water. By the time I got half way through with the clear water, the device started working properly, no problems since. This may work for you...

Per Pages 9 and 10 of Keurig Model B40 Use and Care Guide,
1) turn off the "Auto Off "feature
2) fill empty water reservoir with 48 ozs of undiluted white vinegar.
3. Place ceramic cup on the drip tray and run a brew cycle. Do not use a K-cup!
4. Press the large mug Button
- let Keurig coffee maker fill mug with vinegar & empty in sink.
5. Repeat brew process until water reservoir of vinegar is empty. (remember to open and close lid between each cycle so large mug Button will flash.
6. Rinse the water reservoir thoroughly and fill with fresh water.
7. FINAL STEP RINSE CYCLE
a) place a ceramic cup on the drip tray
b) run regular brew cycles WITHOUT using a K-cup.
c) pour rinse water into sink each time.
d) repeat brew process until water reservoir is empty.
d) perform additional rinse cycles if you notice any residual vinegar taste.
e) if the red "De-scale" light remains illuminated after completing descale and rinse cycles, repeat the descaling procedure above.
Otherwise - you're good to go!