Arthur T Asheville , NC January 29, 2024 Appliance: Model KENMORE PRO DUAL FUEL RANGE Intermittent symptoms over a 6 year period all showing "err" Symptoms varied: oven not starting; oven preheats OK but after you open the door to put in food and close it, the oven showed temp OK, didn't turn on, and heat would drop to nothing over time; other times, it would begin preheating then start beeping and showing the temperature setting, then an 'ERR' and die. Would not start unless I shut off the circuit breaker, then turn it back on. At first i replaced the temp probe, which worked once then all the above began again. Next I replaced the temperature selector rheostat and calibrated it. It was good for two bakes then above began again. Ultimate fix was replacing the main control board AND the convection bake relay board. Now things are great, we got through one bake fine. Fingers crossed for future goodness. Read More... 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours Tools: Nut Drivers, Screwdrivers, Socket Set