The answer to 'inspection not working' is that there are several common causes, including a tripped circuit breaker, a faulty thermostat, issues with the blower fan, or problems with the air filter. Symptoms may include the HVAC system not turning on, poor airflow, or inconsistent temperatures throughout the home.
For minor issues, homeowners can try resetting the circuit breaker, replacing the air filter, or checking the thermostat batteries. However, for more complex problems, it's best to call a professional HVAC technician to diagnose and repair the issue. Attempting DIY repairs on HVAC systems can be dangerous and may void the warranty, so it's important to know your limits.