When you turn on your ceiling fan it turns the electrical wiring to power up the motor that begins to rotate the blades. The spinning blades create a downdraft that helps cool your home in summer, and an updraft to warm it in winter. But if your fan starts turning on by itself, it can indicate a problem with the motor or the wiring. This can be as simple as a loose switch or something more serious like a bad capacitor.
Often fans are attached to the ceiling with brackets that hold them at an angle to help amplify air flow. If the angle is off it can cause wobbling in the fan, but this can be reduced by gently bending the brackets to get them back into position. Also, it’s important to make sure the blades aren’t warped and that they are evenly spaced from each other. This can be done by a little measuring and gentle bending if needed.
Another common issue is that the fan works but the light doesn’t, and this is most commonly caused by a defective pull chain or wall switch. If the switch isn’t functioning properly it won’t complete the circuit that allows the light to come on and then shut off.
Many modern ceiling fans are controlled by remote, and if that’s the case, it could be a simple matter of resetting or re-pairing the remote. If this doesn’t work then it may be an issue with the sensor in the fan, which will require a professional electrician.