You could always find the manual and look in there. Try Section 10.6
No manual? You could try Smeg themselves - there are probably support pages on their website. Nothing there? There's a really useful thing called Google you can use to search the Internet. I found this within 2 minutes:
http://www.manualslib.com/manual/155520/Smeg-Oven-Ap361mfeb.html?page=21#manual
XXX
November 2015