Would help to know the make and model of your awning, but based on your model/year I am guessing its a Dometic/Weatherpro? Could be a lot of things, but since the door awning is working, an easy thing to check is the Wind Sensor on the big awning. Sometimes they flake out, think there is a strong wind, and disable the awning. Depending on your model, you can disable it through the remote, or there might be a switch on the controller box. If that's not the case, next would be power to the awning or the awning motor itself.
Ed & Joie
2004 Vectra 40KD
Freightliner Chassis and Cummins ISC