I used to teach Home Economics, and I always thought that with a fan oven you would reduce the temperature by 10'C, (ie 170') as a fan oven distributes the heat more evenly. (I cook with gas at home.) My son-in-law, who cooks with a fan oven, disagrees with this and leaves it the same, but I would always err on the cautious side to dry a pavlova out without browning.
All a pavlova needs is to be dried out slowly. My Good Housekeeping cookery book, published 30 years ago (!!) says - bake in the oven at 150'C for about 1 hour, till firm. This is for a 3 egg white quantity. I'll leave you to judge!!