Depending on the underlying problem, there are several ways of fixing a Keurig brewer that is not pouring out water, including descaling the brewer, repositioning the water reservoir, and unplugging the brewer for a time period. Flushing out the water line and cleaning the exit needle are other possible fixes.
Cleaning the exit needle involves turning the brewer off, unplugging it and inserting an unfolded paper clip into the holes in the top needle. Another method that sometimes fixes a Keurig that is not pouring water requires users to unplug the unit, remove the water reservoir, turn the machine upside down and hit the bottom of it. If the Keurig brewer is still not working, it is best to contact Keurig customer service for further advice.
Descaling a Keurig brewer requires Keurig Descaling Solution, fresh water and a large coffee mug. The specific instructions vary depending on the Keurig model, but typically the first step involves pouring about 4 ounces of descaling solution and 6 ounces of water into the Keurig and running it through the machine. More descaling solution is added and allowed to sit in the brewer for a minimum of 30 minutes. At least three fresh water rinse cycles are recommended after descaling to ensure that all of the solution has exited the brewer.