A Samsung ice maker rarely fails all at once. The usual sequence is gradual, and recognizing the early stages can save you a bigger repair. At first, you may notice a thin layer of frost on the plastic around the ice compartment, or cubes that stick together more than they used to. Next the dispenser begins to hesitate: you push the lever and ice arrives late, or in clumps. Then you hear a grinding or a straining motor when the auger tries to move a frozen mass. At the final stage, the dispenser stops and the compartment is packed with solid ice.
What drives the progression is moisture. Warm kitchen air reaches the cold compartment through a weak seal or a damper that does not close, condenses, and freezes on the auger, the tray and the chute. Each cycle adds a bit more ice, and the extra ice makes the seal worse. Catching it early means you may only need a thaw and a seal repair. Catching it late can mean replacing the auger motor or the bucket assembly as well.
If you have been watching the first stage for weeks, that is the moment to book. Our Samsung refrigerator not making ice page lists the other causes of a Samsung that has stopped producing, and the freeze-up described here is only one of them.