The oven performs self diagnostic tests and will detect when there are problems.
- F1 - unplug the oven for one minute and then plug back in again
- F8 - if F8 is shown on the oven display;
- turn the oven off and allow to reach room temperature
- press the red reset button on the back of the oven
- leave the oven off for five minutes
- turn the oven on and run as usual