Empty the fridge and put the contents in a cooler with the frozen items and extra ice.
This should be kept below 40 degrees Fahrenheit for food safety.
Power off the unit (usually by pulling it out from the wall and locating the power socket.)
Clean all parts of the fridge with a mild detergent (Diluted Fabuloso, etc)
remove shelves & from fridge and clean thoroughly before replacing them
Locate screws inside freezer and remove them
The various parts of the floor/walls should be removable to expose the cooling side of the heat exchanger
remove these and make sure they’re cleaned inside and out
After all the ice has been removed from the freezer, make sure the small drain in the back is also clean and free of ice, a syringe or rock salt might help
pour warm (not hot) water down the drain to be sure it’s clear
re-assemble freezer
Power on unit and wait 4-12 hours to get back down to food-safe temperture
Restock Refrigerator
Winterizing
Check Gutters
Clean Chimneys
Replace broken fire-bricks in wood stove
Turn off Hoses at the shut-off inside the house
Check seals and gaskets in windows and doors and replace if necessary