How to troubleshoot a GE oven?

To troubleshoot a GE oven that is not heating, not baking evenly, or showing error codes, follow systematic checks for models like JTS5000SNSS wall oven and JGBS66REKSS range. First, check power: ensure oven plugged in and breaker not tripped, electric GE ovens need 240 volts at outlet, test with multimeter, gas ovens need 120 volts and gas valve open behind range. Second, check error codes: display may show F2 for overheating due to failed temperature sensor, F3 for sensor open, F7 for control board failure, note code and look up manual. Third, check if bake element glowing: for electric ovens, open door and run bake at 350 degrees, if lower bake element not glowing red after 5 minutes, element may be burned out costing 30 to 80 dollars, test for continuity with multimeter. For gas ovens, check igniter glowing orange, if not glowing, igniter failed at 40 to 100 dollars. Fourth, check temperature sensor: sensor at back wall may have failed causing inaccurate temperature, test resistance at 1080 ohms at room temperature. Fifth, check door: ensure door fully closed and door lock not engaged after self-clean, if door not closed, oven will not heat. Sixth, perform hard reset: unplug oven or turn off breaker for 10 minutes to clear control board glitches, plug back in. Seventh, check control lock: if display shows LOC, press and hold Lock button for 3 seconds. If still not heating after reset, call technician.