1. The FIRST thing you do since it dumped 3 times is to verify the Freezer temp with a digital thermometer. The freezer temp MUST/HAS to be below 10 degrees before it will harvest and allow water to enter. If not below 10 degrees, THAT is your problem, find out why the freezer does not get below 10 degrees
2. IF at 10 or lower, then verify that the water solenoid valve has water to it, take the feed line loose and see if water squirts out. If so, then apply 120 to the solenois AT the solenoid spade terminals and verify the solenoid lets water thru.
3. If it does then reconnect and still apply 120 power to the solenoid and see if water then fills up the icemaker mold. If so and the refer is below 10 degrees the icemaker probably needs replaced. There are no serviceable parts on the icemaker assbly in the freezer.Doug