Samsung fridge freezer. Hi, my freezer temperature led started blinking earlier today, when I got

Question

Hi, my freezer temperature led started blinking earlier today, when I got back tonight the whole thing had defrosted. I looked on this website and a blog mentioned the same problem and suggested turning it off for a while and then switching it back on. Although NOW the fridge AND freezer wont go below the default temperatures of 15 and 16 degrees. Can you help?