did u set up the throttle and break setting when you first plugged it in to the new reciever? And is it a brushless system specific for a heli or a car? And if your runnin a surface transmitter or reciever in a heli or other way around its not gonna work, so that may be the problem
Is this the esc u got? =

http://www.ebay.com/itm/Walkera-spee...item53eb9acdf1