Difficulty

Face the right side of the unit and locate a small panel on the bottom right.
Unscrew and remove the panel to reveal a black plastic box next to the compressor.
Remove the three screws shown below. Removing the left two screws will free a small plastic piece.
Pry the cover away from the compressor until it unclips from its position.
These two-piece components are the compressor switch. Remove this from the compressor and note the colored wires connected to each terminal. Now replace these components with your replacement compressor switch.
Connect this component to the top pin of the compressor first.
Now insert this component to the bottom two pins of the compressor.
Insert the cover over the compressor switch and thread the wires through the gaps. There will be a click noise when the cover is secure.
Insert the screw on the far right to fasten the cover in place.
Place the plastic piece, which was removed in step 3, back on the cover and secure with the two screws.
Now, screw back on the panel from step 1 and your replacement will be complete.