Took a space heater outside, set it up on a board about 8 inches away from the pipe and valve that froze up. fired it up and let it run. By an hour later, we had water again. The next few days are going to be warmer and.. Ryx can guess this one... raining. I still need to get on the roof and patch a seal around the attic fan. Some of the boards are suffering from rot because of it.