Have had ours for 18 months or so, and works flawlessly for us.
If still under warranty, call Samsung and ask they want you to work with to get this resolved.
That being said. To get our unit in the coach, the doors came off. Have you done the old dollar in the seal test to see that you have solid contact with your door gaskets?
Please let us know how this turns out, and what you find out. As it could help others down the road
!
Best of luck to you,
Smitty