Yes, you can use an electric stove top with a fan-forced oven even if the fan is switched off. The fan in a fan-forced oven is responsible for circulating hot air throughout the oven cavity, which helps to distribute heat evenly and cook food more quickly and efficiently. However, it's not mandatory to use the fan for all types of cooking.
When you switch off the fan in a fan-forced oven, it essentially operates as a conventional oven. The heat will still be generated by the oven's heating element(s), but without the fan, the air inside the oven won't circulate as actively. As a result, you might experience slightly longer cooking times, and the heat distribution may not be as even as when using the fan.
In some recipes, the use of a fan-forced oven with the fan switched off may be specifically recommended, depending on the type of food you're cooking. For example, delicate baked goods or certain dishes might require gentler heat and less air circulation to avoid overcooking or drying out.
If you're adapting a recipe written for a conventional oven to a fan-forced oven with the fan off, it's essential to keep an eye on the cooking progress and be prepared to adjust the cooking time if needed. Additionally, consider rotating the food or using appropriate cookware to help with even heat distribution.
If you choose to use the fan-forced oven with the fan off, be aware that the cooking results may not be exactly the same as when using the fan. Experimenting and getting familiar with your oven's behavior will help you achieve the best cooking outcomes.