Not found the manual online - but you need to set the time to unlock the main oven - hold down saucepan button and stopcooking button together while setting the time with + and - buttons. Release buttons together. A new symbol (looks like a steaming pan) should come on which means that manual cooking (of oven) can take place. I used Beko model DV555 which has instruction book online on offical Beko website as a starting point. Good luck.
ET, November 2011