The answer to 'my air filter keeps shutting off' is that there are several common causes, including a clogged air filter, a problem with the air handler or blower motor, or an issue with the thermostat or control system. Symptoms may include the air filter repeatedly turning off, reduced airflow, and the system not maintaining the desired temperature.
Some potential solutions include replacing the air filter, checking the air handler and blower for any issues, and inspecting the thermostat and control wiring. If the problem persists, it's best to call in a professional HVAC technician to diagnose and repair the issue properly.