I'd START with inspection of the wiring that's up by the roller......following it down the awning arm etc, and coming out of the coach wall.
The wires are not all that robust to say the least. As was said, they are prone to rubbing, kinking, and breakage. Mine broke several times.
2014 Itasca Ellipse 42QD, Freightliner Maxum, 450HP Cummins ISL, 3000 Allison,
Roadmaster Nighthawk II, 2011 Lincoln MKX.
2012 Newmar Canyon Star (first coach) FMCA F428511.