GSH25JSTFSS FROSTING IN FREEZER

Hello Bob;

My name is Peter. I am a retired field service refrigeration technician.

Your problem is directly related to warm air due to low freezer temperature or outside war air getting into your freezer.

First, Check the freezer temperature. It should be set at -2 to +2 degrees F. If you can not control this temperature then you have a bad Bi-metal on the cooling coils.
Second, you have a spring release ice dispenser. Reach up and pull the door to open does it close completely? When you select the crushed ice option, pieces of the crushed ice will not clear the dispenser door and block it open, where warm outside air will get into your freezer causing a frosting problem.
Third, Door gasket not sealing. With a piece of paper, sun the paper completely around the door gasket and the face of the freezer. If you can move the paper around the door then you have a bad seal. Inspect the freezer door gasket for tears. No tears, Then with a hair dryer and a kitchen spatula, heat the door gasket one section at a time while using the spatula pulling out to expand the gasket. At times door gaskets will be come crushed and require reconditioning.
Fourth, Freezer door not completely closing. Often, I had gone on service calls for the same problem. The customer had the freezer so packed that it would not completely close. The customer had food going beyond the shelf edges. Or, a freezer door was stuck and not completely move in.
Fifth, Worn door cams. On the bottom of the door you have a set of door cams. These become worn. They are hard rubber. Laying on the floor, open and close the freezer door. You should hear a popping sound as these two cams engage and disengage. These cams lock the door in place.
Sixth, Refrigerator leveling. When your refrigerator is delivered it is leveled. This is wrong. Your refrigerator should be level from left to right, but the front off the refrigerator should be slightly higher to ensure by gravity the door will close by themselves and ensure a good seal.

Go into the following website and put in your model number. You will get both diagrams and component part numbers. Record the part number you may need and search the internet for best price.
Water Filters Lawn Garden Appliance Parts