Hi my name isXXXXX have been an appliance repair tech since 1992.I don't have the complete model from you, can you get the complete model number off the range and not just the owners manual. There are several letters after JBS27BAnd you do control your clean by the temperature knob correct?
The complete model is JBS27B C4WH. The temperature is controlled by a knob.
The oven cycle light comes on, when the oven is not on. To get the light to shut off must turn on the oven temperature knob to start oven (just any temperature) for a few minutes. Then shut off and the oven cycle light goes off. Only does this a few times a week.