20 Most Recent Keurig B70 Coffee Maker - Page 3 Questions & Answers

the air pump in the machine might be locked up. if it is you will have to take the machine apart, not fun, and locate the air pump behind the water tank. take the pump apart and try to turn the pump manually until it moves freely. good luck

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

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It may be clogged up with hard water scale. Fill the reservoir with white vinegar. Place an empty coffee mug in the unit and continue to run vinegar through it until the reservoir is empty enough that it is asking you to add more water. Leave the unit alone and let the vinegar stand in the unit for 8-12 hours. Fill the reservoir with water and run water through the device (you might want to do this several times in order to make sure the vinegar is completely gone). Also check to make sure that the piercing unit is not clogged with coffee grounds. Hope this helps.

I just blew a small amount of compressed into the upper needle to clean out the water line to the coffee cartridge . I guess you could use a pin or toothpick to loosen the debris where the needle enters the coffee cartridge as it seems this is where the blockage most likely occurs. I did not disconnect anything but was careful not to use to much air pressure. After cleaning the line I ran a cycle without a cartridge to flush out the line. I have not had a problem for months after doing this. I guess you should on occasion run a clean cycle.

There are a couple reasons that the B70 might stop in the middle of brewing so one cannot be certain. The first one is where there are calcium carbonate deposits on the heating element and as the water in the boiler is agitated during pumping there is inadequate heating from the heating element and the thermostat shuts the brewing off when cooler water rises to the thermostat. Try running a mixture of 50/50 white vinegar through the unit a couple timesxto dissolve the calcium deposits or descale the unit per Keurig instructions. Secondly, it could be a faulty thermostat. If you are not handy, mechanically oriented I suggest buying a new one is best, least expensive. I believe that keurig coffee makers are able to brew 5000 cups without a problem. However our experience is that units with more than 5000 brews are prone to leakage, electricalr problems.

I looked at a video on the Keurig Customer site. The serial number on my unit which is a K10 is the bar code number located on the bottom of the unit. I removed the drip tray and turned the unit upside down. On other units it may be on the back wall of the drip tray housing. You have the remove the drip tray and shine a light into the slot. Once again it is the black/white barcode label with a number. I don't know where it is on your unit but it is somewhere and should also be the barcode label. Hope this helps.

1. Power off machine.

2. Using a metal paperclip, insert it into left side of top needle. It must insert at least 1" deep. Insert it into slot on right side and again from back of needle.

3. Remove KCup cradle. Separate bottom from top. In the top section, insert the paperclip up into bottom needle from the bottom upwards. It will not go all the way thru and this is normal.

4. Reassemble KCup cradle and reinsert it back into coffee maker.

5. Power on machine.

6. Brew a cup of water only. There may be coffee grounds in the water and these should eventually clear during the remaining steps. NOTE: A large cup brew cycle should output a full 8 ounces (235cc). Less means there is still a blockage

7. Empty reservoir and fill with undiluted distilled white vinegar. Repeatedly run brewing cycle until Add Water light comes on.

8. Make sure Auto-OFF is NOT set and let last cycle of vinegar remain inside machine for 4 hours.

9. Refill reservoir with fresh water and repeatedly run brewing cycle until the water is clear and odorless.

10. Set Auto-OFF, if preferred.

Pull the drip tray out and the serial number is on a sticker where the tray slides into the main unit. You have to get down low and look straight in and you will see it.

The o-ring you found floating goes around the black circle of plastic that surrounds the water inlet valve at the bottom of the inside of the reservoir. It's only used to create a seal when you're using the attachable water filter. If you're not using the attachable water filter, you don't need to replace the o-ring.

Contact the company on line, parts department. Or in your manual locate the Telephone number for service. On or about page 18.

Power surge damaged circuit board when left in socket. Factory service will fix it.

Vales are clogged with debris and need purging.

The Problem is the USER. Follow directions and use a Filter and Distilled water as suggested. Bad house water will smell.

See warning siganals page 18 of manual for codes.