are the batteries too low, and it shut down on it's own? Most do this to preserve the batteries from being drawn down too far if you accidentally leave it on too long, or the batteries are not being charged.
Is the Charger on? Are you plugged in?
'14 Palazzo 33.3 bunkhouse 34' diesel
KingTailgater2 Dish HD, 100w/5a SOLAR, BlueOx
100,000+mi since '14 - US, Alaska, Canada - Northwest, GA! (also, '14 Gulfstream Amerilite and '07 ForestRiver Rockwood) : )