Our repairman found the problem. It was due to Phil. Phil is the groundhog who has a burrow under our back deck. Apparently in his home building, he hit our control cable for the air conditioner. Just a little hazard of owning an older home. Old homes sometimes have wires more exposed than newer homes. So is the case here. Fortunately for Phil he didn't hit the 240 volt power cable. Unfortunately for Phil, he, or she, will need to find a new home. The new wire is out of Phil's reach, I think. Still, the problem of a new home for the wildlife who co-exists with us must be addressed.
I am glad the rest of my family comes home tomorrow. We will work on this little housing problem this week.
Until then, last girls night without the boys. We are cooling off watching Chocolat. Thank goodness for the A/C!