Thanks John, I think this explains it. The installer repeated the button code rather than sending the button code and then a different repeating code. Do you happen to have the code for the repeating signal that I could pass on to him?

Control4 uses wired infra-red "bugs" (or mini-jack remote control leads on compliant devices) back to a set-top style box to provide a single, wireless remote that works in any room of the house.