Had another bottom frezer Samsung model that did that, and now have a Whirlpool that does the same thing, both at the S&B house. It doesn't seem to take much to clog the drain a bit and it freezes up if the water doesn't drain through easily. I fixed both myself, but it's a PITA task.
I even helped start a class action suit against Samsung over that very common problem, but the case didn't go very far and the law firm decided it was going to be long while the prognosis of a good (profitable for them) settlement was too slim.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL