Oven Convection Fan Not Working? 6 Causes and What to Do
A convection fan that will not spin is usually a failed fan motor, a seized blade, a door switch or a relay on the control board. Here is how to narrow it down.
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Why is my oven not heating at all?
An oven that powers on but does not heat has lost its heat source or the signal that turns it on. On electric ovens, the most common cause is a burned-out bake element. On gas ovens, it is a weak igniter. Other causes are a failed temperature sensor, a blown thermal fuse, a bad relay on the control board, or a gas supply that is turned off.
If you need it fixed today, our appliance repair Mountain View CA technicians repair GE, Whirlpool, KitchenAid, Bosch, Thermador, Wolf, Samsung and LG ovens across Old Mountain View, Cuesta Park, Waverly Park and the rest of the city.
This guide is for an oven that stays cold. If yours heats but runs low or bakes unevenly, see my oven is not heating up all the way. If nothing lights up at all, see our guide to an oven that won't turn on.
What should you check first?
- Bake mode, not a timer. Some ovens sit in "delay start" or Sabbath mode and will not heat until you cancel it.
- Control lock. A lock icon on the display can block the bake function.
- Breaker. An electric range uses a double breaker. One half can trip and leave the clock and light working while the elements stay cold.
- Gas valve. On a gas oven, make sure the shutoff behind the range is open and the cooktop burners light.
- Error code. Write down any F-code. It points the technician to the right part and can save time.
What are the 6 most common causes?
1. Burned-out bake element (electric)
The bake element is the loop on the floor of the oven, or it is hidden under a floor panel. A failed element often has a blister, a split or a burned spot. Even without visible damage, it can fail inside. A technician checks it with a multimeter. A good element reads about 20 to 50 ohms.
2. Weak gas igniter (gas)
Most gas ovens use a hot surface igniter. It has to draw enough current to open the gas valve. As it ages, it still glows but does not pull enough current, so the valve stays closed. This is the top cause of a cold gas oven. It is a common repair.
3. Bad temperature sensor
The sensor is a thin probe on the back wall of the oven. If it reads wrong, the control may think the oven is already hot. A sensor fault often shows an F-code on the display.
4. Blown thermal fuse
Many ovens have a safety fuse that blows if the oven overheats, often after a self-clean cycle. When it opens, the oven may have power but no heat. A blown fuse can also mean a cooling fan or a door lock problem, so the cause should be checked.
5. Control board relay
The control board sends power to the element or igniter through a relay. A burned relay means no heat even when every other part tests good. You may smell burned plastic near the control.
6. Gas valve or wiring
Less often, the oven safety valve fails or a wire burns off at the element terminal. Wall ovens in older Mountain View Eichler homes can have tight cabinets where wires get pinched or heat-damaged.
Oven still cold after these checks? Call now for same-day oven repair in Mountain View.
Is it safe to test the oven yourself?
You can safely look for damage on an exposed bake element and watch a gas igniter through the bottom panel. Do anything else only with the power off at the breaker. Do not remove gas parts or work on the gas valve. If you smell gas, turn off the oven, open windows, leave the home and call PG&E from outside.
Wolf, Thermador and Miele wall ovens have hidden elements and sealed panels. These are best left to a technician who knows the model.
How much does it cost to fix an oven that won't heat?
Most oven repairs in Mountain View cost about $150 to $500 with parts and labor. A bake element or igniter replacement usually falls in the low to middle part of that range. A control board or a high-end wall oven repair can cost more. You get a firm price before any work starts.
| Part | Oven type | How common |
|---|---|---|
| Bake element | Electric | Very common |
| Hot surface igniter | Gas | Very common |
| Temperature sensor | Both | Common |
| Thermal fuse | Both | Common after self-clean |
| Control board relay | Both | Less common |
Repair or replace the oven?
An element, igniter or sensor is almost always worth fixing, even on an older range. Think about replacing if the oven is more than 15 years old and needs a control board, or if the cavity is rusted through. Our guide on whether to repair or replace an appliance has a simple rule of thumb.
Other common repairs we see in Mountain View
If another appliance is giving you trouble, these guides can help: oven not preheating all the way, fridge water and ice dispenser not working, microwave oven not heating up but runs, and washing machine repair for washers that leak, stall or will not spin.
Frequently asked questions
Why does my oven turn on but not heat?
On electric ovens it is usually a burned-out bake element or a bad temperature sensor. On gas ovens it is usually a weak igniter that cannot open the gas valve. A blown thermal fuse or a failed control board are less common causes.
Can I replace an oven bake element myself?
On many freestanding electric ranges the element unscrews from the back wall of the oven. Turn off the breaker first. On wall ovens and high-end brands, the element is often hidden under the floor panel and is harder to reach.
How do I know if my gas oven igniter is bad?
Look through the bottom panel slots. If the igniter glows orange for more than 90 seconds and the burner never lights, the igniter is weak. If it does not glow at all, check the power, fuse or control.
How much does oven repair cost in Mountain View?
Most oven repairs in Mountain View cost about $150 to $500 with parts and labor. Elements and igniters are usually at the low to middle part of that range. You get the price before work starts.
