No ice being made. No water in ice tray. Ice push fingers not elevated Sensor light flashes twice then pauses when door open. How will I know if I need to only replace the ice maker assembly vs the water inlet valve? 
No ice being made. No water in ice tray. Ice push fingers not elevated Sensor light flashes twice then pauses when door open. How will I know if I need to only replace the ice maker assembly vs the water inlet valve?