Problem(s) Encountered:

We started to take skyflats with the 1.3m at 17:40. After a few successful exposures, we were unable to use Owl. It was reporting an error connecting to the telescope controller. We tried rebooting Owl, which was unsuccessful. Eric had tried rebooting mdmarc2, which was also unsuccessful as it appeared to not have started back up again. We physically went to the 1.3m to power cycle the controller, which we thought might have been the source of the problem. We powered down the electronics box on the North side of the mirror and turned the power back on again. We then went into the 1.3m computer room to check on mdmarc2. The computer room was very hot; the thermometer above the main monitor read that the room was at 120 degrees F. We tried to turn mdmarc2 back on, but we were unsuccessful. We investigated the AC unit. The AC remote incorrectly read that the room was at 70 degrees and the unit was not blowing out any cold air. We opened the door from the computer room to the control room and the control room to the dome to circulate some cool air into the computer room. We left the dome open to help as well. Eric drove to the 1.3m and inspected the AC unit. He was able to turn the unit back on using the button on the inside front panel. The computers had started to cool and the room was down to 80 degrees F by 21:00. We were able to turn mdmarc2 back on and everything ran smoothly from there. We checked on the 1.3m computer room again at 06:00. The room temperature was down to 70 degrees F, but the computer fans were still running loudly. Eric has notified us that he will shut the computers down during the day, which should allow them to cool off so the fans don't need to work so hard once we start observing again the night of 10/22.

Solution:

No idea what caused the AC unit to power down.  Once I figured out how to power it back up, it came up without hesitation and has continued to function since.  The cooling fans on the two workstations continued to run at apparent maximum, even this morning, with the computer room back down to 70F.  I powered them down for the morning today.  Once I brought things back online, the fans returned to normal duty.  All systems tested positive today.  This problem has not occurred again since.

The thermometer for the computer room has been located above the tilt sensors.  Remote observers can monitor the temperature by panning the camera UP (three clicks).