My CP3 is a later model with a 4in1 receiver, so it may be different, but in the manual it does refer to the switch positions under the battery, as relating to different models, so it might be worth checking that again. I'm assuming you switch on the remote tx before connecting the heli battery (unpredictable things happen if it's done the other way round). My manual isn't to hand at the moment - I'll check it out if this doesn't fix it (or you haven't solved it another way). Best.