Mike, I'll venture to guess that you have the RM7732 model as do I. The most probable source of a leak is the supply line. Mine came loose from the back of the fridge about five years ago and we had pond in the floor when the overflow pan filled faster than the drain could handle it. Turn off or disconnect the supply line which is probably under the kitchen sink(That's where it is in my '98 Bounder). As peaches&cream said; You will have to get the unit out to access the line and connection in back. DW likes ours too much to just disconnect it.