On the remote, press and hold down the enter key followed by the number you selected for the command mode. Keep both buttons held down for at least 3 seconds. Check if the remote operates the unit now.
If you can't remember which command mode you selected, try pressing both Enter & '1' down for over three seconds and try operating the unit. If this doesn't work, repeat for Enter & '2' and finally Enter & '3'
martin
September 2011