In most cases when an oven will not heat it is a faulty ignitor. most ovens are equipped with a CARBORUNDUM ignitor. DO NOT substitute any other type of ignitor as damage to the valve will occur. The oven/broiler ignition system consists of a glow bar type ignitor, oven safety valve and electronic oven control. From a cold start the ignitor needs 30â€“60 seconds, with voltage applied, to reduce resistance enough to provide a minimum of 2.5 amp current through the safety valve to open the valve and allow burner ignition. The ignitor is energized any time the oven temperature sensor calls for heat. Normal valve operating current is 2.5 to 3.0 amps if you have a amp meter and feel comfortable making amp checks I have included an image of where to place the amp clamp. If the oven has a broil ignitor that is the same part number it can be used in place of the bake ignitor for testing. I hope this is helpful.Please resubmit you question with a model number for further assistance.