Thought the washer was dead on arrival, as with every try, I kept getting the “H2O Supply” message.  I decided, even though I had the machine for only a few hours, to give GE service a try.  I had the machine installed by a professional plumber who had installed modern “anti flood” hoses.  These hoses to my understanding, are hyper sensitive to water pressure changes, to which this particular washer is apparently not a fan.  Our GE tech who has been to our home before, is great, and knew right away what the issue was.  He changes out the hoses for standard steel braided ones, and all was resolved.  Since then, the washer has performed well with different loads at different settings.