The refridge wil not cool . Doors seem to be cool, inside not as cold. freezer part cold . Black cylinder is warm and fans is working . Coils are room temp.
Check behind the cover in the back of the freezer to see if it's iced up. If it is check your defrost timer, defrost heater and defrost thermostat. If not iced up is the fan in the freezer is blowing air into the fridge.