replacing fuse in a washer dryer?

Hi

The heater unit in my Zanussi WDJ 1500 washer dryer appears to have conked out. On investigation I think the most likely cause is the clogged condensor unit which I have cleared via the rubber connection to the drum. I am assuming the heater unit is protected by a fuse. The question is where is it (exactly) amongst the rats' nest of wiring I see when I take the top off, and what do I need to replace it with.

Many thanks