esc bec

Hi all I am in the process of setting up a Tri-copter but have met with a small problem in programming the ESC's, I am using Turnigy AE-30 3amp BEC controllers coupled to 2830/14 motors, when I connected a receiver to the ESC and 3S lipo the ESC emitted a series of beeps and the motors spooled...

I'm trying to diagnose a problem I came across the other night while assembling my new Clouds Fly. (Only my second plane, so I have limited knowledge) I was just about complete and then it seemed like the receiver and/or the ESC shutdown then restarted. It seemed weird but I ignored it and...