In an electric range, the cause is either the thermostat/electronic range control or the bake (bottom) element or a broken wire. In a gas range, it is either the oven control or the ignitor or safety valve or a broken wire.
Check the circuit breaker in your fuse box. A tripped breaker could prevent power from reaching your oven. If your circuit breaker has tripped, turn the breaker back on, and check to see if your oven heats up. If it doesn't produce heat, you may need to have the issue inspected by a professional technician.
Depending on your type of oven, a possible reason your oven is not heating may be due to a faulty igniter in gas ovens or a broken heating element in electric ovens. These parts are the source of your oven's ability to heat, and if they aren't working, your oven won't be able to perform its job.
Reset the Electronic Control
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.
A gas oven igniter replacement costs $150 to $325 on average, depending on the brand and model. A new oven igniter costs $20 to $50 for the part alone. A broken igniter results in the oven not heating, clicking noises without lighting the gas, and gas leaks.
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.
The number 1 failure preventing a gas oven from heating is a weak igniter. The igniter won't get hot enough to allow adequate current to flow to the safety valve so the valve won't open to let gas flow to the burner for ignition. That's why we recommend testing the oven igniter first.
Turn the circuit breaker to the OFF position. Wait one minute, then turn the breaker back to the ON position to reset electronic oven controls on models so equipped. We suggest doing this even if the light or the clock on the Range or Wall Oven is working.
The possible reasons your oven is not working may include a broken baking or broiling element, a malfunctioning spark element (spark electrode), a broken igniter, a blown fuse, an issue with the control board, or outlets not providing enough power to the oven.
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.
Make sure the multimeter is calibrated and then turn the dial to the lowest ohm rating. Place the multimeter on the thermostat. If the thermostat has a reading of zero or as close to zero as possible, it is working fine. However, if it has no reading at all, your oven thermostat is faulty and will need replacing.
Faulty Electric Oven Element
For fan ovens specifically, you may notice that cold air is being blown into the oven cavity. This is a sign that your electric oven element is faulty. Electric oven elements are the part that generates heat and often glows red when it is switched on.
While the location varies between models, the hot surface igniter is usually found near the oven burners, you may need to remove the bottom panel in order to access it.
Direct spark ignitors will have spark wires, while hot surface ignitors have an element. You can also use an air compressor to remove carbon deposits that are preventing normal function. You can use either a soft cloth or a scuff pad to gently wipe the ignitor's surface.
The igniter is faulty: Check and replace if needed. The spark electrode is damaged: Inspect and replace if necessary. The thermostat doesn't work: Test and replace if it's malfunctioning. The temperature is not calibrated correctly: Calibrate the settings as needed.
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.
Located on the oven control console is a feature called “Control Lock”. It is usually reset by holding down the button for three seconds and pushing it down again. Occasionally, resetting your gas oven's power can resolve the problem.