A side by side unit. Water dispenserSometimes leaks. We keep a glass under the tap when we are not using it. I've looked at the parts breakdown and can't see anything that resembles a valve to cause any leaking. Because we have a well I use a whole house filter and do not have a filter on the unit, never have and the frig is 11 years old. I change the filter when it becomes brown from top to bottom. The filter will not by-pass when it becomes full, the water pressure drops significantly before clogging. That has not happened since before we installed the unit. Where do I start looking to resolve this problem. Thanks for your help