Hi mate Rav is spot on ,what you can do is take the esc wire from motor one and plug in to the throttle pins on the receiver ( no props on the quad please) power up the quad the receiver light will flash fast this is bind mode Now turn on the transmitter in bind mode make sure your min of 6 feet away when you bind , the light on the receiver should stop flashing when bound
Now power off plug esc back in to motor 1 pins on the FCB wire up receiver to FCB and away you go it should now work