The fingers disappearing is it starting a harvest cycle. If it makes it all the around to the parked position without filling with water it probably is a bad water inlet valve. Sometimes the inlet tube will freeze over. Some the older models with in-door ice had a problem with the inlet tube freezing up. There is an updated inlet tube with a heater. Look behind the fridge where the tube enters the fridge. If it enters on the freezer side, you may need the heated inlet tube. If it enters above the refrigerator side, you don't need the heated tube.