When the refrigerator door fails to shut tightly or create a proper seal, cold air can escape the refrigerator and allow warm air to invade the compartment. This can cause the buildup of condensation inside the refrigerator and cause the compressor to work overtime. Fixing the refrigerator door could be as simple as rearranging the items inside, or you may need to replace the closing cam. Troubleshoot the most common items that can cause a bad seal on a refrigerator door.
Check inside the refrigerator to ensure there aren't any food containers, open crisper drawers or misaligned shelves that could keep the door from closing properly. Reposition any items that may be out of place and close the refrigerator door. If the door still fails to shut tightly, check the door gaskets.
Clean the refrigerator door gaskets with warm, soapy water and a soft cloth. Clean inside the folds of the accordion-style gasket to get all of the grease, dirt and grime from the surface. Wipe the gasket dry with another cloth. Inspect the gasket to make sure you cleaned it thoroughly, and clean it again if necessary. Ensure the refrigerator is level from front to back and side to side if the door still does not close properly.
Place the level on top of the refrigerator. Pull the grill from the bottom of the refrigerator to expose the feet and any leveling screws.
Rotate the leveling feet with pliers clockwise or counterclockwise to raise or lower the refrigerator until the bubble on the level rests between the two vertical lines. Some refrigerators have leveling screws next to the front feet. Turn the screws clockwise or counterclockwise with a screwdriver or nut driver until the refrigerator is level. Replace the grill and check the refrigerator door. If it still doesn't close tightly, replace the closing cam.
Turn the refrigerator and freezer thermostats to their lowest level or "off" position. Empty the contents from the refrigerator and transfer them to an insulated chest.
Remove the screw holding the hinge cover to the top of the refrigerator. Lift the hinge cover to expose the hinge.
Remove the bolts that hold the hinge to the top of the refrigerator with a socket wrench or nut driver. Pull the hinge from the refrigerator door.
Grab the refrigerator door with both hands and lift it up toward the ceiling. Move the door to a flat work surface.
Pry the nylon closing cam from the bottom of the door with a flathead screwdriver. Insert a new closing cam into the door.
Clean the bottom hinge pin and closing cam on the refrigerator with warm soapy water. Dry the hinge and cam and coat the surface of the cam and hinge pin with a small amount of petroleum jelly.
Place the refrigerator door on the bottom hinge pin. Insert the top hinge into the refrigerator door and secure it with the bolts you removed previously. Replace the hinge cover and secure with the hinge cover screw.
Transfer the contents from the insulated chest into the refrigerator. Turn the refrigerator and/or freezer thermostats back to their original settings.