There is ice build-up. Bottom of freezer. I have cleared out the defroster pan with hot water. It appears something in the defroster area is not working. Any ideas
In a lot of cases the unit is allowing the evaporator fan and compressor to restart before the unit is done with the defrost which will cause ice build up in the drain. If you have flushed the drain then this would be the issue and you would want to replace the main control board.