You have engaged the Control Lock (LOC on the display). Look for a button that has a padlock icon or the words "Control Lock". Hold that button for 5 seconds to dis-engage the control lock.
For some Kenmore 417 models there are two buttons to hold. Press OPTIONS and SELECT at the same time until the Control (Control Lock) indicator goes off. Enter your full model number on www.SearsPartsDirect.com
to find your owners manual, which will have specific instructions for your model. Hope this helps!