Hey guys, this has been driving me NUTS lately! I feel like I've searched everywhere and just can't find the answer. When I start from Cold and Dark, and it's time to start the APU, no matter what I do, this is what it does. I put it to start, and fairly quickly, the low pressure light and fault light come on, and nothing happens. If I switch the APU to off and do it again, it starts normally. I thought it was just something I was doing wrong in my procedures but I follow the checklists exactly, and even when I use FS2Crew and my FO sets everything up, everything screws up because he tries to start the APU and it faults. Some help would be very appreciated, thanks!