Jeffrey W Daufuskie Island , SC August 22, 2015 Appliance: Jenn-Air Self Cleaning Slide-In Downdraft Electric Range JES9800AAB Jenn-Air Range Jes9800aab: F1 8 error code and the oven won't operate. How to replace Control Panel. I called Jenn Air and asked what that error code meant. They refused to tell me, but they referred me to a local appliance repair company. I was told the control panel needed to be replaced. I called a local appliance company and asked what that error code meant. They told me it was the keyboard, so I ordered a new control panel assembly, and installed it. The procedure takes me about an hour and a half since there are multiple steps. I then restored the power, and now the clock can be set, and the oven operates. In all a very satisfying experience. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours