The same just happened to me when I tried to use the washers but they were frozen.
It was the 10amp fuse in the fuse box below the dashboard on the drivers side (pull out the little tray above the bonnet pull lever).
There is a chart of the fuses on the inside of the cover.
The fuse box in the engine compartment does not serve the wipers on my model.
2001 - Hatchback - 1500cc
John Thompson
February 2008