Before replacing the switch, unplug the freezer to avoid an electrical shock hazard.
The interior light in most freezers, and the
fan in some, is controlled by a door switch. When the door is
closed, the switch is depressed and the interior light goes off
(yes, it really does) and the fan resumes normal operation. If
the door is misaligned or the switch malfunctions, the freezer
may become warm as a result of the non-operation of the evaporator
fan and the heat generated by the interior light.
Locate the switch and remove it
by removing the retaining screw (if any) or by prying it with a putty
knife. Place a piece of masking tape over the blade of the putty knife
to prevent damage to the refrigerator. Gently pull the switch from its
housing and expose an inch or two of wire.
The switch will be connected by two wires (four wires if it also controls the fan). Label the wire placement on the switch before disconnecting the wires. The wires are connected to the switch with slip on connectors. Firmly pull the connectors off of the switch terminals (do not pull on the wire). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If the connectors are corroded they should be replaced.
Before replacing the switch, unplug the freezer to avoid an electrical shock hazard.
