John, I have no idea why the fuse blew, it was a rented dwelling and tenant said the fridge just stop working. With regards to refitting the F/F, the F/F also had an AWT S/FCU, so just replaced the socket plate with flex plate, chopped plug off and fitted MF connectors.I therefore wonder if you have any idea why the fuse blew and, perhaps more to the point, wonder how comfortable you were about 'refitting' the F/F after you had put in a new fuse?