Product review (5 stars): Fixed Overflowing ice maker inside Whirlpool Refrigerator
This saved a service call, and fixed my leaky refrigerator!  We had to disconnect the water supply a few years ago because of a leak a the back, and when we recently replaced the valve that connects the water line to the back of the refrigerator, we THOUGHT it was fixed.  We had ice.  We had water.  Then we realized that when we dispensed water from the door, the ice maker was overflowing inside the cabinet - but only when we dispensed water from the door.  Lots of googling, DuckDuckGo searches, and Youtube videos, we were still unsure of the issue, but this valve made the most sense.  Taking apart the interior was the hardest part, but we did it!  No more leaks.  I guess there are other issues this fixes, but this was our issue, and it fixed it.