In a fan oven, 0 degrees would be equivalent to the fan setting being off, as fan ovens typically operate at a set temperature with the fan running to circulate the hot air. The temperature scale for fan ovens is usually the same as for conventional ovens. Therefore, 0 degrees in a fan oven would simply mean that the fan is not in operation, and the oven is not heating. If you are looking to convert temperatures between fan and conventional ovens, a general advice is to increase the temperature by 15-20 degrees when switching from a fan to a non-fan oven
. Additionally, there are various conversion tables available to help with the conversion of oven temperatures between different types of ovens
