Do I need a new refrigerator?

Is green indicator light off, on, or flashing 5 times then pause?. N611 OEM entry model slide switches and 5 temp adj. and low tech diagnostics with green and red indicator led light. N621 OEM upgrade model has 9 temp adj., flush surface touch controls, can be accessed and cleared from optical, 1 character optical, and smart diagnostics for technician. N641 same as N621 except aftermarket supplied, and 2 character optics and slight raised buttons for selection. I think all interiors are same IMO, however possible 1 less door and/or wire shelf. IMO all door inserts will fit each other.