Hi, I have a vitron power inverter with a Multipass compact unit. There is no power at all inside the camper van. The Multipass unit has a solid red alarm led and a solid amber charge led. I cannot even Bluetooth into the console. Absolutely no power, everything is down. I am using the same power cord as I used before. Also, when I start the camper van, engine running I also get no power, even the driver console is not working. Please help.