The ice maker in my Samsung refrigerator (side by side with freezer on bottom) stopped working without warning. The reset button had no effect. All else in the fridge/freezer was working normally; no codes or anything either. I read some reviews that suggested unplugging to reset the ice maker. Tried that with no effect. Didn't seem like there was much else I could do. From what I can tell, it was either a shot motor or sensor. So I just decided to replace the whole ice maker. Expensive fix but easy as can be. There was just one extra thing I had to do to make the new one work.
After installing the new ice maker, it didn't start up and the reset button wouldn't operate it either. It seemed as dead as the original, and my first thought was, "What a waste of $150." But then I remembered the "unplug" advice, which apparently resets something internally in the fridge. And sure enough, when I plugged it back in, the ice maker started working on its own. The fix is complete but just a heads up...it did require unplugging to get it operational.