I have disconnected from shore power and also did the battery disconnect in the coach and now have no power to it. I am getting a slow red blinking fault light on the control panel. I have checked the connections again and still cannot find anything, But I do have a humming noise coming from the battery compartment area. cannot tell where it is coming from but I would swear it sounds like the batteries humming. My power cord goes straight into the surge protector and from there it goes into a box but it does not say anything about being an inverter. I also reset the main breaker and inverter breaker just in case.