The answer to 'my air filter won't turn on' is that there are several common causes, including a tripped circuit breaker, faulty wiring, or a problem with the air filter motor. Symptoms may include the air filter not running at all or making unusual noises. Some potential solutions are checking the circuit breaker, inspecting the wiring for damage, and replacing the air filter motor if needed.
In most cases, it's best to call a professional HVAC technician to diagnose and fix the issue, as working on electrical components can be dangerous if you're not experienced. A qualified technician will be able to quickly identify the problem and make the necessary repairs to get your air filter back up and running safely.