2. The most effective method:
After cleaning things up, cut off the power supply, open the door, put a pot of warm water (about 80 degrees, don't boil water) in it, let it melt slowly, and then change it until it melts completely (of course, you should also put some towels under the refrigerator to prevent frozen water from flowing all over the floor).
3. After the first deicing, use a thicker film, soak it in water and spread it on the four walls of the freezer, and take it off directly after the frost is full. After the frost is wiped clean, wipe it with a dry towel and let it dry for a while. When it's almost dry, close the refrigerator door, turn on the electricity for refrigeration, and run for about 2 hours. After the temperature drops completely, put the food in the refrigerator.