we did have thunderstorms and a brief power outage earlier this week
Pretty much all you need to know.
To erase program information for a selected program:
1. Select Program A, B, C or D with the Program switch.
2. Turn the function dial to the Program Erase position. The display will show “ERASE.”
3. Press and hold the OFF button until “ DONE ” is displayed.
4. Repeat this procedure for each program you wish to erase.