Turn the dial to off.

Press and hold together the start button (the one with the green arrow) and the button to the left of it.

While holding, turn the Programme Dial 1 ‘click’ clockwise(to 90 degrees temp).

Now turn the dial a further 9 clicks clockwise.

Note the error code displayed.

Continue turning the dial clockwise till you get to off, then turn to any program and back to off.