Cool Keurig Descale Light Stays On Ideas. Web the only way to get this descale light to turn off is to to complete a descaling cycle. The problem is that some owners are reporting that their machines are stuck in this mode.
Select the 10oz button (the largest one) and press it to start the process. You can also use vinegar to make the process easier and better. Over time, coffee residue and minerals from water can build up inside the machine, resulting in the need to descale.
