I just got my trailer delivered 2 days ago. When I plugged it in to shore power the inverter was humming loudly and clicking on and off This cycle would happen about every 10 seconds. I was told on ...
Start with the main fuse from the battery. Also look at any other fuses in the 12 volt circuit. The inverter / charger only charges your battery so it can be dead and you will still have 12 volt lights assuming you have charged batteries.
Solve this problem first and then we can look at your charger issues.
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