I have three wires coming from the ceiling; white, black, copper. The fan has black, white,green and blue. I've connected the black, white and green. But the fan still doesn't work. Any Ideas?

Leaving blue wire disconnected OK, if not using light. Check pullchain and direction switch not in middle. Check breakers, and switch, if any.

Do you have a voltmeter?

Correct wiring would be white to white, black to black, green to ground, and blue to black if you're using a light.

Ceiling fan wiring - Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-wiring.php)