What to do if my TEFAL OptiGrill XL won't start cooking after preheating?
- KKevin LewisSep 13, 2025
If, after preheating, the indicator on your TEFAL Grill stays on 'preheating' and the cooking cycle doesn't start, first ensure that your food is not thicker than 4 cm. Also, make sure you completely open the grill to place the food, then close it. If the 'OK' button is flashing, it means the grill isn't sensing the food because it's too thin; press the button to confirm the start of cooking.













