We are new to RV'ing and recently bought a 2009 Keystone Springdale 266 TT. I've been going through all the systems learning how everything works. When I got to the Power Center I was looking at all the DC (Fuse) circuits, pulling each fuse as I went along. My question is this: when I pull one of the 15 Amp fuses shouldn't the red LED light to the right of the fuse light up indicating an error? This only happened on 3 of the circuits. Am I misunderstanding how the system works or is there something going on?