Connect the ground wire from the fan to one of the screws. Installing a ceiling fan where there is no ground wire mike if a ground wire is not available then it is best to run a ground wire from another electrical circuit that has a ground wire.

Probelm With Ceiling Fan Wire Connections Doityourself Com
No ground wire ceiling fan. Connect the black wires together. A ground wire would have green insulation. Connect the green wire to your household ground wire copperbare wire. The wiring is so old that a ground wire was not used. The approach recommended by most professional electricians is to replace the standard. Depending on the age of the home and if the home is older then it may be that many other circuits do not have a ground wire as well.
The second solution to the problem is to wire the ceiling fan without the ground. Connect the white wires neutral wires from your fan and ceiling together. The installation of the ceiling fan without the ground wire will not affect the performance of the ceiling fan however this safety system that is provided through the ground system will not be available. So if you wire your fan without the ground wire it. This will allow you to add a light kit later on without having to rewire the fan. For ceiling fans without lights follow the same step.
The ground wire carries displaced electricity away to reduce the risk of electrical shock if lets say the metal parts of the ceiling fan or any other appliance or part attached to your electrical system becomes accidentally charged with electricity. You can take one of two approaches when installing a ceiling fan on a branch circuit that has no ground wire. Lastly connect the blue wires together or the blue wire to the black wire for lights. I have provided the following links that lead to fully detailed information on this website that will assist you with your electrical question. The ground wire doesnt carry any electrical current unless there is a problem in your electrical system.