The main question is are you plugged into shore power or not? What's the total setup, i.e. are you boondocking? If you're running off grid how long has it been since you were plugged into shore power? Is the trailer in the shade or has it been cloudy continuously where its at? These are all factors that can effect the solar panels ability to charge the battery.
What type battery is installed? Have you checked the condition and state of charge of the battery?
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Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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