just like to add if your beko hasn't got the thermal fuses,some later models were redesigned,and your beko may have a ceramic disc located behind the panel inside the oven.this disc is a thermal cut out,.if this fails then no circuit,and will give you the symptoms you are having.also check the heating element,is your oven fan assisted ?,.I don't have the wiring diagram for your model,
mech monster, November 2011