Check your handbook, it will tell you which fuse it is exactly, from what i remember its in the number 4 position & its a yellow 20A rated fuse
The pump blows the fuse in freezing conditions (mine does it all the time)
No it wont damage them, start at the bottom with your finger or a spatula & pull slowly & gently outwards. Be careful when you do this & i would only do this as a last resort if the fuse change does not work.
btw, you you hear a second pump running when you wash? if not then either its the fuse or pumps shot