Try "reinstalling" your controller. I think on that model you disconnect the power for 30 sec., then hook it back up, wait for the beep (or is it 4 beeps?) Then press and hold the on/off and + button simultaneously and hold them until it beeps again.
Oh, and of course make sure the battery's in ALL of the remotes onboard are fresh BEFORE reprogramming.
Check your manual though.... Cuz I've had a few naps and I'm not sure my instructions here are spot on.