I'm working on a GE Refrigerator GSS20IEPH WW. The water does not come out the spiget when you push the lever. I am able to get water from the coupling under the door when I push the switch. The line appears to be frozen inside the door. I tried to blow the line out with air but that did not work. If I put my hand on the inside of the freezer door it is very cold near the area behind the valve.
My question is how do I unblock the line or defrost the line, basically how do I fix this problem?