Re: Sven oven
the fault then will be the potentiometer that is within the hob unit that is connected by an umbilicle lead to the oven assembly.
the hob will have to come out to effect the repair and hopefully the installer has fitted it with a cooker hose(makes life a lot easier) 🙁
once the hob is out remove 2 screws on each side ond the glass top will come off.
once inside the potentiometer is in a case in the center front of the hob and the cover is secured by 2 phillips on the base of the hob,you will need to unsolder the old one one solder the new one ( only 3 wires though ).
re assemble and there you go.
give me a call for the potentiometer 07961365484
bryan