Mine just developed the same problem. Me being an engineer, I decided to take it apart and found the problem. There is an aluminum tube shaped like a "C" with a heating element inside of it. Water flows through this metal tube, is heated, and then pushed via steam pressure. There is a metal brace that holds this "C" piece securely to the bottom of the machine. This brace is sharp and overtightened, which caused a small hole to form in the metal, causing the leak (in my machine of course). I am currently researching how to patch aluminum so I can hopefully fix it.
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Verify that the water is leaking from the bottom of the coffee maker and not just running down the back during filling and pooling underneath. (Look under coffee maker - without lifting - to see if water droplets are hanging from bottom of unit)
If verified that water is leaking from bottom of coffee maker Contact Us for further assistance.
Okay no model given,
* Pour over brewers only leak if over filled (more than a pot). If it leaks just sitting there then there is a hole in the tank. Call for service or replace.
* Commercial machines like CW, CWTF, Single, Dual, Urns, are plumbed into a water line. Leaks may come from the water line, Tank, or urn.
* If the water leak is clear and not hot then it's the water inlet line.
* If it's hot then the heater is leaking,
* If it's coffee colored then it's the urn where the coffee is being brewed.
* In All cases call your vendor for service as this is a hazardous situation. Unplug or turn off the power to the unit. It should be on a large throw switch near any large brewer. Have maintenance turn off the breaker and leave of till the vendor can service.
Have you tried brewing with no k-cup in the unit? If water comes out then the needle that punctures the bottom of the kcup needs to be cleared out. I use a paper clip and put it into the kcup holder where the puncture needle is. I move it up and down the hole until cleared out.
I have had a few of these machines leak. I pulled off the bottom and found Mr Coffee is using low quality tubing that melts or leaks where it attaches to the heater element that boils the water. I replaced the tubes with higher quality silicone tubing that I bought directly out of China on Ebay and the problem was solved.
it's possible, like mine with the same problem, that one or more of the plastic feet under the water tank has broken, then making the tank move and upsetting the valve underneath. My one always leaks clean water, never dirty and I have a broken foot.