Problems Setting Up a Second Receiver

[deepdale11]

Hi,

i don't know if anybody could help me.....I have a Futaba 3GR 2.4GHz transmitter and a R603FF receiver which works fine but i brought a second Futaba receiver same model R603FF but it doesn't pair up with the transmitter (light RED no signal) i have pressed the SW button to try and pair but no joy........any idea's on what i am doing wrong or is the second receiver faulty???

Thanks

Chris