A thermostat that seems inaccurate may have dead batteries, bad wiring, or poor placement near heat

https://samedayhvachelp121.urbanvellum.com/posts/24-7-hvac-repair-the-most-common-after-hours-ac-problems

A thermostat that seems inaccurate may have dead batteries, bad wiring, or poor placement near heat. Replace batteries and test settings before assuming a larger issue.