Linkage could be broken. That happened on my wife's Almera. New linkage wasn't too expensive from the scrapyard (change out of £20) and took me less than an hour to fit it. That is one thing I love about Nissans, parts are dirt cheap and they are an absolute doddle to work on.
Did you use it when it was frosty? were they blades stuck to the screen? If so you have more that likely blown the fuse, check the location of the fuses & replace the fuse.