Fridge is supposed to be frost free. I bought an older model RT18M6215SG/AA 3 years ago and the freezer is getting frost in it. A coworker has a SAMSUNG fridge 5 years old same issue.
Called support and they told him it is a know issue with their the fridge. I will never buy a SAMSUNG fridge again. Ice Maker is the loudest maker I ever had in a fridge.
I am actually looking for a new fridge and will go back to Whirlpool or Frigidaire model.