Hey all! We just installed our 30a DC charger for the first time and it was showing up perfectly. When I started the engine, the BlueTooth app showed it was going into some sort of low voltage mode, it blew the fuse under the driver seat of our Sprinter and now the unit won't connect to BT again...I've replaced the fuse twice now, but for some reason the unit won't turn on. Is there a hardware factory reset to get it working again or did something go wrong?