I bought a 3-Pack of Nest Temperature Sensors. They worked for almost 3 months and now randomly, throughout the day, they drop off with the message “unresponsive to HVAC”. This causes my air conditioner to run non-stop. I've tried moving them, uninstalling and reinstalling, and cleaning/replacing batteries and nothing has worked. I wonder if there is another solution or if I received a defective pack. Please help if you can. Thanks!
