Electrical or Air Cond. Problem?

Thanks for the comments, I think I see possibilities from each of you. Today I went out and turned the a/c on and all was well...I had 113 volts. I did find this morning the a/c was on low fan rather than high. I have learned from this forum that can cause the a/c to freeze up, however I cannot believe mine froze up as our temp yesterday was well into the ninety's. I let the unit run today for 3 hours and recorded the time and what the volts were each time. Never had a reading lower than 109 and most of the time it was 113. Only other item on was the refrigerator.I am wired into the house panel and am roughly 70 feet from the 5er. Don't recall the gauge wire we used but did take that into consideration at the time of installation. Have always been careful not to have too much electrical going at one time and have not had a problem until yesterday. I am starting to believe the suggestion of my being so far away from the house, I may be overtaxing the system.
Thanks to all....will advise if the unit repeats yesterday.
Weldon