It's common amongst you Mk3 Ibiza guys, although it happened to my Tolly too:
http://www.seatcupra.net/forums/showthread.php?t=89756&highlight=fan+fuse
I got someone to bypass the fusebox on mine and put an isolated fuse in tucked away behind the battery
mine not melted but my fans are on 10min every time i start the car![]()
when you say fans? do you mean the radiator fan is going? or you hear a whirring?
Any decent car electrician should be able to bypass that certain fuse externally with a good housed fuse casing .
I and other members here have done it
Easy peesy and cheap.