GE Quiet Power 3 will not fill

Hi, I have a ge quiet power 3 that ill not fill. I had a issue with a bad water inlet valve that i replaced, and all was well. about 2 weeks after the machine fails to fill with water. I replaced another inlet valve, to no avail, and checked the float. what else can it be?

went into service mode. when key # 6 is pressed, the water valve key, no water is released, i can hear the valve click over.