Oven Not Heating

Common Symptoms

• Oven won't heat at all when set to Bake
• Oven preheats partially but never reaches the set temperature
• Bake works but Broil doesn't (or vice versa)
• Food takes significantly longer to cook than expected
• Error code on the display (F1, F3, F7, or similar)

Most Likely Causes

1. 1

   Failed Bake Element (Electric Ovens — Most Common)

   The bake element is the coiled heating element at the bottom of the oven cavity. When it fails, you'll often see a visible break, burn mark, or blister on the element coil. A failed bake element will show no continuity on a multimeter.

2. 2

   Faulty Igniter (Gas Ovens — Most Common)

   The igniter glows orange-red to light the gas. When it weakens, it may glow but not get hot enough to open the gas valve, or may not glow at all. Watch the igniter in a dark room when you start the oven — it should glow brightly within 90 seconds.

3. 3

   Failed Oven Temperature Sensor

   The temperature sensor (a thin probe mounted inside the oven cavity) reads the oven temperature and sends a signal to the control board. A failed sensor causes inaccurate temperatures or prevents heating entirely. It will read out-of-range resistance on a multimeter.

4. 4

   Control Board Failure

   The electronic control board manages all oven functions. If the bake element and sensor test fine, a failed control board may be preventing the heating circuit from activating. Control boards are expensive ($100–300) and replacing them should be a last resort after ruling out simpler causes.

Quick DIY Checks

1. 1For electric ovens: inspect the bake element (bottom of oven cavity) visually for breaks, blistering, or burn holes. A damaged element is easy to spot and confirms replacement is needed.
2. 2For electric ovens: test the bake element with a multimeter set to resistance (ohms). A good element reads 20–50 ohms. If it reads open (OL) or infinity, it's failed and needs replacement.
3. 3For gas ovens: in a dark or dimly lit kitchen, set the oven to Bake at 350°F. Watch through a cracked oven door — you should see the igniter glow orange-red within 30–90 seconds. If it doesn't glow or glows weakly and no flame appears after 90 seconds, the igniter needs replacement.

1. 4Check temperature accuracy with an oven thermometer: set the oven to 350°F and read the thermometer after 20 minutes. If the reading is off by more than 25°F consistently, the temperature sensor likely needs replacing.
2. 5Check the broil element separately: set the oven to Broil and watch whether the upper element glows red. A working broil with a failed bake confirms the bake element is the issue.

Repair vs Replace

Recommended Tools & Parts

• Oven Bake Element

  The lower heating element in an electric oven. Model-specific — search your brand and model number for exact fit.

  $20–$60

  Buy on Amazon →

• Gas Oven Igniter

  Glow-bar igniter for gas ovens. Replace if it glows weakly or not at all. Model-specific part.

  $25–$50

  Buy on Amazon →

• Oven Thermometer

  Hangs inside the oven to verify actual temperature vs. the dial setting. Great for diagnosing temperature sensor issues.

  $8–$12

  Buy on Amazon →

• Appliance Multimeter

  Tests resistance of heating elements and sensors. A standard digital multimeter works fine for appliance repair.

  $20–$35

  Buy on Amazon →

Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.

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