A tripped breaker in the battery compartment is the likely problem.
On my THOR WINDSPORT 29M, I have been fooled twice by these breakers. They are small and often mounted in partially hidden places in the battery box. Additionally, when looking at these breakers from above (when standing outside looking in the dark battery box), the little 'thingie' that drops down when tripped is difficult to see from above. Check all of them closely, make sure they are all reset.
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