Fold in the flour, a little bit at a time, mixing it as you go. Add the orange juice and zest, grated carrots and sultanas. Gently mix all the ingredients together.
Grease the baking tin and pour the mixture in.
Place baking tin in the air fryer basket and cook for 30 minutes. Check and see if the cake has cooked - use a cocktail stick or metal skewer to poke in the middle. If it comes out wet then cook it for a little longer.
Remove the baking tin from the airfryer basket and allow to cool for 10 minutes before removing from the tin.