Oven · Updated 2026-07-01
Oven Not Heating? Gas vs Electric Diagnosis
An oven that doesn’t heat is a different fault on electric vs gas models, so the diagnosis splits early. This guide covers both: the bake-element and igniter checks you can do safely, the parts that commonly fail on each, and the clear line where a repair call is the right move.
Electric ovens: the bake element
Most electric ovens have a bake element at the bottom and a broil element at the top. Set the oven to bake at 350°F and wait five minutes. Open the door and look — the bottom element should glow red-orange. If it stays dark while the broil element works, the bake element has failed. Unplug the oven (or kill the breaker — ovens are 240V) before touching anything.
A visible blister, crack, or burn mark on the element confirms it. Replacement is a common, inexpensive repair.
If both elements are dark, the fault is upstream — the thermostat, the temperature sensor, or the electronic control board. A technician reads the sensor resistance and tests the board outputs.
Gas ovens: the igniter
Gas ovens use a hot-surface igniter (a small flat bar that glows) to open the safety valve. Set the oven to bake and watch the igniter through the bottom vent. It should glow bright orange within 30–60 seconds, and you should hear the gas valve click open and the burner light.
If the igniter glows but the burner never lights, the igniter is weak — it’s drawing too little current to pull the valve open. This is the most common gas-oven failure. If it doesn’t glow at all, the igniter is open or the control isn’t sending power.
Uneven baking and temperature drift
If the oven heats but bakes unevenly or runs hot/cold, the temperature sensor or the calibration is off. Many ovens let you adjust the offset in the control (check the manual). If that doesn’t fix it, the sensor is the next suspect — a technician can check its resistance against the chart for your model.
Safety: when to stop and call
Stop and book a repair if you smell gas, if the igniter glows but you hear or smell gas that doesn’t light (shut the oven off and ventilate), or if you see any charring near the control. Gas and 240V electric ovens are not DIY past the visual checks above. Same-day oven repair is available across King & Snohomish Counties — call 425-230-3534 or book online.
Frequently asked questions
Why does my oven take so long to preheat?
A weak bake element or a failing igniter (gas) is the usual cause — it still heats, just slowly. A hidden bake element under the floor takes longer to show visible failure, so watch preheat time: if it’s doubled, a part is on its way out.
Is it the element or the control board?
A technician measures voltage at the element during a heat call. If 240V is present but the element stays cold, the element is bad. If voltage is missing, the control or the relay is the fault. This is a 10-minute test that avoids replacing the wrong part.
Can I use the broiler if the bake element is out?
You can, as a short-term workaround for a meal, but don’t put off the repair. Running the broil element alone for long periods stresses the control and the element, and it bakes very unevenly.
Need a oven technician?
We carry common parts on the truck and finish most oven repairs in a single visit. Same-day service across King & Snohomish Counties, 90-day labor warranty.