Update:
Thanks to everyone for your responses.
I fell on the ice and broke my ankle just before this charging issue started and have been unable to try any of the ideas you have suggested,
Today the snow melted enough that I could make it out to the trailer. I unplugged the AC power, Turned the prosign 2000 2.0 off and back on and plugged the Ac power back on.
All is well. Charging at 14.9 volts and 30 amps. Outside temp is 32 degrees. Wish I could have tried a few things when it was colder to learn how to keep things going. Oh well next time.
Thanks for all your responses.