Freestanding Freezer: Outer walls are hot
It's normal for the outer walls of the freezer to get warm or hot when the compressor is running; refrigerant lines inside the cabinet walls remove heat from the compressed refrigerant. The hot refrigerant helps control cabinet humidity to prevent the cabinet from sweating.
If the walls get extremely hot, the condenser fan could be malfunctioning. The condenser fan blows air across the condenser coils to help cool the compressed refrigerant before it enters the evaporator. Replace the condenser fan if it doesn't run when activated.
Dirty condenser coils can also cause the hot freezer walls. Dust build-up on condenser coils interferes with heat transfer so the refrigerant stays hotter as it leaves the condenser and travels through lines in the freezer walls.
Performing routine maintenance on the freezer can also help keep the freezer walls from getting hot. Cleaning dust from the bottom front grill can improve airflow across the condenser so the refrigerant is cooler as it goes through lines in the freezer walls. Cleaning the door or lid gasket can prevent air from leaking into the freezer compartment, causing the compressor to run longer and heating up the refrigerant travelling through lines in the freezer wall.
Replace the freezer condenser fan motor
The condenser fan is in the machine compartment of the freezer next to the compressor. It moves air across the condenser coils to help cool the hot refrigerant coming out of the compressor. Replace the condenser fan if it fails to run when activated.
Perform freezer routine maintenance
Routine maintenance keeps your freezer working efficiently. Clean the bottom front grill and the condenser coils regularly to help the freezer cool better and use less energy. Adjust the freezer door if it's not sealing properly. Lubricate the door seal with a light coat of petroleum jelly occasionally to prevent air leaks into the freezer.
Clean the refrigerator condenser coils
Dust-covered refrigerator coils can prevent the refrigerator and freezer from running efficiently and cooling properly. Follow the instructions in your owner's manual for cleaning the condenser coils. Unplug the refrigerator before accessing and cleaning the coils. On most refrigerators, the coils are behind the bottom front grill. Clean the condenser coils with a coil brush.
Learn how to repair broken, frayed or damaged wires in your appliances.
Learn how to use a multimeter to check for wiring problems in an appliance that's not working