Too much water is let into the icemaker and the tray overflows. We end up with a big blob of ice everywhere.
What regulates the amount of water that is let in?
The icemaker itself is what regulates the fill time of the icemaker. You will want to check to make sure that it is not the water valve sticking open a little and allowing the ice maker to overfill. If this checks ok then replace the icemaker.
Water leaking from bottom of freezer door to floor. Ice buld up on floor area of freezer.
You will want to remove the shelves in the freezer and remove the rear wall. The defrost drain is clogged and would need to have the ice cleared out and flush the drain with hot water.