Most likely the ignitor is burned out. This is the most common issue on gas ovens. If the ignitor is bad, then order and replace it. I will provide a link to the part and video below. If you get a circuit through the ignitor, and it still will not work, then you most likely have a bad control board.
If the secondary pilot is not igniting, the line may be plugged, the most common cause of this issue. Turn the oven on and use a screwdriver to tap the gas lines right where the pilot light is lit. Tap it firmly several times to remove any soot that may be blocking the pilot tube and see if the flame increases in size.
Issues with the Igniter
Listen for a clicking sound when you turn on the oven. If you don't hear it, the igniter may be faulty and need replacement. To replace the igniter, turn off the gas supply, remove the burner cover, disconnect the wires, and install the new igniter following the manufacturer's guidelines.
Push in and hold the oven knob and turn it to the “ignite” setting. Push in the oven knob with one hand so you can turn it and keep holding it until you have lit the pilot light. Turn it to the left to the “ignite” symbol or the first temperature setting.
The problem with your ignition could be as simple as the burner, valves and ignition being clogged with food and grease that may have built up over time. Before inspecting, make sure that the gas supply is switched off, then inspect the areas which could be impacting your ignition.
Open the oven door and locate the pilot light opening at the bottom of the oven. The owner's manual should identify the pilot light's exact location if it's hard to find. Use a grill lighter or long match to light the pilot light valve at the bottom of the oven. Some ovens are designed to be manually lit at each use.
Igniter. You'll pay $150 to $250 to repair the igniter. Igniters are crucial parts of gas ovens, as they are responsible for igniting the gas to give heat and cook your food. So, if the igniter is faulty, the oven simply won't heat, but it's dangerous, too, because it can result in gas leaks.
Several common ignition system problems can cause your vehicle to fail to start or run poorly. One of the most common is a dead battery. If your battery dies, your vehicle won't have enough power to start. Other common problems include a faulty starter, a bad ignition switch, a faulty distributor, and worn spark plugs.
If your gas oven won't turn on but the stove still works, you're in the right place. Thankfully, most of the time this problem is caused by either a problem with your power, the gas, the gas igniter, the burners, or in rare cases the temperature control thermostat.
Common causes include gas leaks, faulty ignition systems, clogged burner ports, or issues with the gas supply.
Burnt Out Bulb
One of the most common reasons for a non-functional oven light is a burnt-out bulb. Just like any other light bulb, the one inside your oven has a limited lifespan. Over time, it will eventually burn out and need to be replaced.
Soak the sealed burner base in vinegar or warm water and use a stiff brush to remove any debris. Finally, clean any remaining debris out of the burner holes with a toothpick, sewing needle or compressed air. Reinstall the burner, cover and the grill, and try igniting the burner once more.
Turn the circuit breaker to the OFF position or remove the fuse. Wait one minute, then turn the circuit breaker back to the ON position or install the fuse to reset power to the appliance. This should reset the electronic controls on the Range or Wall Oven.
Locate the igniter near the oven burner at the back of the oven. Use a soft brush or a can of compressed air to gently remove any food particles, or grease from the igniter. Be careful not to apply excessive force to avoid damaging the igniter. Do not use water or any liquid cleaner on the igniter.
If the warning light fails to illuminate when the ignition is turned on, there are two possible causes. One is that the warning light bulb may simply have blown. This could be due to old age. The other possibility is a fault in the charging circuit - if the generator is overcharging it may cause the bulb to blow.
First, find the reset button on your car's ignition. This is usually located near the steering column. Once you've located the reset button, press and hold it for a few seconds. Next, insert your new key into the ignition and turn it to the “on” position.
The rule of thumb is that if repair costs exceed 50% of the price to install a new oven, you should buy a new oven instead of replacing it. For example, if your oven costs $2,000 but costs $1,500 to repair, you could use that $1,500 for a new and improved oven.
A gas oven igniter works by sparking and heating the gas emitted from the oven, so without it, the oven will not be able to produce heat. However, as so much rests on this little igniter, they are prone to a bit of wear and tear.
Remove any dirt, debris, or gunk that may be blocking the gas flow. Visually inspect your igniter to see if it sparks properly. After verifying that you have disconnected the gas supply, press the ignition button on your stove while looking for sparks coming off the igniter.
Cleaning off the igniter can help fix your problem. But if it's visibly damaged or refuses to ignite after cleaning, you'll likely need to replace it and you should book a repair with an appliance expert.
Check the igniter for any buildup, discoloration or damage. Discoloration is often the first sign of a faulty igniter. If nothing looks wrong with the part, plug the oven back in and watch to see if the igniter glows after turning on the oven. If it does not glow orange, replace it.
Most gas ranges currently available employ one of 3 basic gas ignition systems; pilot ignition, hot surface ignition system (which uses a 'glow bar' or 'glow coil' - aka an "ignitor") and a spark ignition system.