A thermostat that seems dead is not always the actual problem

https://pub-ca4675ebbec745d189139001b9f85db7.r2.dev/salt-lake-city/why-salt-lake-city-weather-is-so-hard-on-your-ac.html

A thermostat that seems dead is not always the actual problem, because control issues can also come from wiring or system-side faults rather than the thermostat itself.