I have tried to clear the
Macro by holding the Setup button for two flashes.
According to the manual (page 17), to clear a macro, follow these steps:
1) Press and hold SETUP until the two bottom IR segments flash twice.
2) Press MACRO once. The Macro programming screen will appear
3) Select the Macro Key to be cleared and press it once. The last-selected device menu screen will be displayed.
4) Press and hold SETUP until the two bottom IR segments flash twice. The Program Keys will appear again.
5) To exit programming, press HOME once.The display will return to the last-selected device menu screen.