Frost buildup on freezer back wall in GE Fridge
Hello -- I have frost build up in the back freezer wall of a GE fridge (model; GSH25JSXL SS). As a result, it is preventing any ice cubes to be formed and is causing the refrigerator to be less cold than usual.
I called a local repair shop on the phone and they want to replace the defrost heater, but I'm not sure.
What's the problem cause and suggestions to fix it? Thanks in advance!