The answer to 'my thermostat keeps shutting off' is that there are several common causes, including a faulty thermostat, issues with the HVAC system, or problems with the power supply. This can lead to symptoms like the thermostat display going blank, the system not responding to temperature changes, or the HVAC unit turning on and off unexpectedly.
Some common causes include a loose connection, a dead battery, a faulty thermostat, or a problem with the HVAC system's control board. In many cases, the issue can be resolved with a simple reset or replacement of the thermostat. However, if the problem persists, it's best to call in a professional HVAC technician to diagnose and repair the underlying issue.