Rangemaster classic 110 dual fuel double oven..... we had a power cut, and when the power came back on the clock symbol is flashing with O's and the word auto. Both ovens are now not working. We have tried switching the cooker off at the mains, but this has made no difference. I know there is a way to reset the auto, but have forgotten which buttons you hold down together. So, could you please tell me how to reset the auto? I think this may work. Thank you.