Clio 2010 Dynamique Screen Wash

When I use the screen wash function nothing happens on both the front and rear window screens,( the screen wash bottle is full) there is no noise like it is trying to pump it through but the wipers front and back work fine, I have checked my manual and the Internet to see if the pump is on its own fuse or relay but cannot find any information do not want to go to trouble and expense of changing the pump if it is just a fuse

Thanks