Samsung refrigerator ice maker not working

I have a Samsung fridge with two ice makers… the upper unit has stopped working. I just replaced it (DA97-12317A) but the problem persists.

The ice maker has a “reset” button located on it. When I press the reset button, the ice maker goes through the whole cycle and ice is produced. However, it does not continue to automatically make ice.

Should I assume that the main PCP needs to be replaced?

I have a Samsung 3 door refrigerator. The ice maker isn’t making ice.