Installed my system two years ago. Never had a problem, until tonight. Heard my AC click on, sounded a bit louder then normal. Walked by my Nest and saw it had a straight up error message on the screen. Message said my Yellow wire was "disconnected" and there was now a power loss to the system... Kind of weird. Since nothing around the unit or the unit itself has been in anyway disturbed. So not sure how the wire would have gotten dislodged. Also weird, my AC was most definitely running.
Started to get worried because my house was below the AC temp. But the system was still on.. On the Nest thermostat, it gave me no options to turn off the system. It gave me a list of options to go through for testing (network, device, system info, etc) But no option to turn it off..
The android app had less options. Everything was grayed out accept to set my self to "Away." Figured it was worth a shot since my away temps are pretty high for AC. Set it to away, my AC turned off. The error message went away on the App and then on the thermostat. System went back to being completely normal.
This seems like a bug with the app/nest thermostat. Why and how did this happen? How do I prevent this again? What if this happens if I leave for the day or the weekend and my AC never shuts off? Or the software kills my AC unit entirely.
