This range alarm will go off and no one has set it the screan reads 2-F on it tried to cancel it and it comes back on beeping we have to unplug it for a long time then we can plug it back in. I have no modle number on it but the scramatic # on the back of oven is 35-305982-05-0 Can you help my email anstaritis@yahoo.com or my cell number is 415-850-1353 my name is Starr