What happened after the F? - did it go to C? (Or what did it do?)
I would pull the batteries ONE MORE TIME, and see if that helps)
Weekly rather than Daily: - WEEKLY - Every Sunday it backs itself up. - It was working FINE on Friday when you left. For what ever reason, it had a bad day on Saturday and ALL PROGRAMMING was lost, so it came up as totally DEFAULT. Sunday, it backs up the DEFAULT SETTINGS, and IT IS TOTALLY NOT WORKING Monday morning when you come in. HOWEVER, you can use the AUTO BACK UP FILE from the PREVIOUS SUNDAY, and all is good.
Weekly rather than Daily: - DAILY - Every DAY it backs itself up. It was working FINE on Friday when you left. For what ever reason, it had a bad day on Saturday and ALL PROGRAMMING was lost, so it came up as totally DEFAULT. SATURDAY, it backs up the DEFAULT SETTINGS, then on SUNDAY, it backs up the DEFAULT SETTINGS again, and IT IS TOTALLY NOT WORKING Monday morning when you come in. Because it only has 2 back up file locations, YOU ARE HOSED, and must re-translate from the start. (OR, hope you WINSPM can save you)
-merlinmansblog.blogspot.com