Figured I'd post here first in case I'm being dumb . Brand new beko oven. Fan, built-in. beko bxif 35300x. There are modes on the dial. Clockwise from top: Bulb, "defrost", "fan + steam clean", "grill" , "grill + fan"... Grill modes work fine but the main "fan" option (bottom/middle one) doesn't...