Have you tried starting your engine? The alternator on mine puts 14.5 volts to house batteries.
Also have you started your generator? Mine puts 13.3 volts to the the house battery.
Are you sure house power is making it to the MH? I have a lighted extension coard half way to my MH and if it is on the light is on. Occasionally I have lost house power for breaker in house or wall plug on house porch coming part way out.
You probably already ready checked these but just thought I would mention them. Sometimes we overlook the easy things.
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