The answer to 'my ceiling fan installation won't turn on' is that there are several common causes, including improper wiring, a faulty switch or control, or a problem with the ceiling fan motor itself. Symptoms may include the fan not spinning at all or only briefly turning on before shutting off.
Some common solutions include checking the circuit breaker, ensuring all wiring connections are secure, replacing the wall switch or control, or replacing the ceiling fan motor if it has failed. However, if you are not comfortable troubleshooting electrical issues, it's best to call a licensed electrician to diagnose and fix the problem safely.