Let's back up a step. The codes for that device are already in the main library. — Staff replied: “When you tap Add Device in the Edit mode for a room, then select the L5 Remote. You will then be asked to identify the device to be added which is as named in the message above.”
Let's back up a step. The codes for that device are already in the main library. The command set is Receiver: Pioneer: VSX/SC Series Main Zone All Models. Why do you want to learn the codes?