Hello Avishag, thanks for your post!
From what you have described your Electrolux oven is ringing after you have used the pyrolytic cleaning. Your control panel may need to be reset and you can do that by disconnecting power from it for at least ten minutes. If this does not help resolve your issue I would need your model number to further assist you. You can locate that information on the frame of the door on a white or silver tag. Once I have that information I would be happy to assist you further. -Matt