Replaced igniter. First, we swapped the broiler igniter into the location of the oven igniter after determining from the diagram that the parts were the same. This was to eliminate any other part that may have been the cause. Since the broiler’s igniter worked perfectly well in the broiler, there was no reason to expect it to not work in the oven. And it did, which restored at least partial use of the appliance. We do not broil but the convection settings and the clean cycle both use both burners. Ordered a replacement part which arrived in two days and installed it. Oven works as it should. Only problem was that in manufacturing the screws used to hold the igniter had been damaged by heat and would not unscrew needing to be drilled out. The wire harness on the back of the range was difficult to access. Due to installation of the range, moving it was not possible.