Choose the type of damage
1. Check the fuse in electrical panel of house.
2. Check the socket with another electrical appliance.
3. Check if the temperature control is on.
4. Check the back side of refrigerator for sound from the engine. Maybe the issue comes from a light bulb.
1. Check the door rubber. It is important to be cleaned.
2. Check that the door rubber is in a good condition and closes airtight the cooling area.
3. Remove products from the back panel of the refrigerator.
4. Keep the drain hole clean.