The "H2O" code refers to the dishwasher not receiving sufficient water or not receiving any water at all. Make sure the hot water valve underneath the sink is all the way open for proper pressure.

GE GDF520PGJ review: Dry and mighty, this budget GE dishwasher holds its own The $400 GE GDF520PGJWW keeps things simple and shines your dishes. Andrew Gebhart June 30, 2017 11:01 a.m. PT ...