We have only had this for a couple of years and the other day I went to dispense water and it would not stop. We had to turn off the main water supply to the house to stop the water. We had to move the fridge to turn off the water supply to the fridge.
The problem turned out to be a rusted screw that held the switch/lever on the on position.
It rusted the screw due to moisture from the ice dispenser chute slowly running down onto the screw that held the switch lever in place.
This is a bad design that could have simply been prevented using a stainless-steel screw that would not rust.