I have a sears fridge model 106.71182100. The ice maker in the fridge
works fine, but over time a drip causes water to fall down the back of
the fridge (inside the freezer) and builds a block of ice on the
cooling coils etc. As time goes on, this causes the ice maker to
overfill and quit making ice.

I recently cleaned out the ice in the back of the fridge and really
couldn't see what is causing this. Water flows from a specket at the
top of the fill tube into a water fill cup on the ice maker. This all
seems to be set up correctly.

Thanks in advance.