The answer to 'my inspection won't turn on' is that there could be several common causes, such as a tripped circuit breaker, a faulty thermostat, or an issue with the HVAC system's power supply. The symptoms may include the HVAC unit not responding when the thermostat is adjusted, no power to the unit, or other indications that the system is not functioning properly.
Before calling a professional HVAC technician, you can try some basic troubleshooting steps. First, check the circuit breaker and reset it if it has been tripped. Next, check the thermostat to ensure it is set to the correct mode and temperature. If those steps don't resolve the issue, there may be a more complex problem that requires the expertise of a qualified HVAC technician.