If you’re asking yourself “why does my oven igniter keep going out,” you’re not alone. A repeatedly failing oven igniter often signals an underlying electrical problem or a part nearing the end of its lifespan. This common issue stops your oven from heating and can be frustrating. But understanding the causes is the first step to a fix.
This guide will walk you through the main reasons your igniter fails. We’ll cover how to diagnose the problem and what you can do about it. You’ll get clear, step-by-step advice to get your oven working again.
Why Does My Oven Igniter Keep Going Out
An oven igniter is a critical component in modern gas ovens. Its job is to get hot enough to light the gas flowing from the oven’s burner. When it works correctly, it glows bright orange, opens the gas valve, and ignites the flame. If it keeps going out, the process is being interrupted. The root causes typically fall into a few specific categories.
These include simple wear and tear, electrical issues, gas supply problems, or safety device failures. Pinpointing the exact cause requires a bit of detective work. Let’s break down each possibility so you can identify what’s happening with your appliance.
Common Causes Of A Failing Oven Igniter
Several key factors can lead to an igniter that repeatedly quits. Knowing these will help you troubleshoot effectively. Always remember to turn off the gas and electricity to your oven before inspecting any components.
Normal Wear And Tear
The igniter is a consumable part, much like a lightbulb. Over time, the heating element weakens. It may glow but not get hot enough to open the gas safety valve. This is the most common reason for failure. If your igniter is several years old, it’s likely just worn out.
You might notice it takes longer and longer for the oven to light before it finally stops working. A weak igniter can also cause the oven to heat unevenly or not reach the set temperature. Replacing the old igniter with a new, manufacturer-approved part is usually the solution.
Faulty Or Loose Electrical Connections
Electricity is what makes the igniter heat up. Corroded, burnt, or loose wires can interrupt the power flow. This prevents the igniter from glowing properly. Connections at the igniter itself or at the oven’s safety valve can become faulty over time due to heat exposure.
Inspect the wiring harness connected to the igniter. Look for any signs of melting, discoloration, or a loose plug. A poor connection here can cause intermittent operation, where the igniter works sometimes and not others. This is a frequent culprit for repeated failures.
Problems With The Gas Supply System
The igniter needs gas to light. If the gas flow is inconsistent or blocked, the igniter may glow but no flame will appear. The oven’s safety system will then shut off the gas, causing the igniter to turn off. This cycle can repeat, making it seem like the igniter is the problem.
Check if other gas appliances in your home are working normally. If they are, the issue is likely within your oven. The gas line to the oven burner could be partially clogged, or the gas safety valve itself might be malfunctioning and not opening fully.
How To Diagnose The Problem Step By Step
Follow these steps to safely figure out why your igniter keeps failing. You’ll need a few basic tools like a multimeter for some checks. If you’re uncomfortable with any step, contact a qualified appliance technician.
- Turn Off Power and Gas: Locate the circuit breaker for your oven and turn it off. Also, find the manual shut-off valve for the gas supply line and turn it to the “off” position. Safety first.
- Access the Igniter: Remove the oven racks and the bottom panel or floor of the oven to see the igniter. It’s usually located near the burner at the back of the oven compartment.
- Perform a Visual Inspection: Look at the igniter for any obvious cracks or damage. Examine the wires for burns or loose connections. Check the burner for food debris or blockages.
- Test the Igniter’s Resistance: Using a multimeter set to measure resistance (ohms), disconnect the igniter wires and touch the probes to the igniter’s terminals. A working igniter typically shows between 50 and 400 ohms. A reading outside this range or an infinite reading means it’s bad.
- Check for Proper Gas Flow: With power and gas still off, you can visually inspect the gas line for kinks. If you safely restore gas momentarily (without power), you should hear a brief hiss when the oven is turned on, indicating flow.
Specific Components That Could Be Faulty
Beyond the igniter itself, other parts in the ignition system can fail. These components work together, and a fault in one can mimic a bad igniter.
The Bake Or Broil Safety Valve
This valve is electrically operated and only opens when the igniter draws enough current. If the valve is defective, it may not open even with a good igniter. Sometimes the valve sticks closed or opens intermittently. Testing this valve often requires a multimeter to check for proper continuity, and replacement should be done by a professional if you’re unsure.
The Oven Control Board
The electronic control board sends power to the igniter circuit. A faulty board may not send consistent voltage, causing the igniter to behave erratically. This is less common than other issues but becomes more likely if you’ve ruled out the igniter, wiring, and gas valve. Symptoms can include the igniter glowing for a random amount of time before shutting off without ignition.
Faulty Temperature Sensor
The oven temperature sensor works with the control board to regulate heat. If it’s giving incorrect readings, the board might cut power to the igniter prematurely. This could make it seem like the igniter is failing. The sensor can be tested for resistance with a multimeter, with the value changing with temperature.
When To Call A Professional Technician
Some repairs are best left to experts. If your diagnosis points to a complex issue or you don’t have the tools, calling a pro is the smart choice. This is especially true for gas-related problems.
- You smell gas at any point during your inspection.
- The wiring looks extensively damaged or melted.
- You have diagnosed a faulty gas safety valve or control board.
- You are not confident in your ability to safely disconnect and reconnect gas or electrical lines.
- Replacing the igniter did not solve the problem, indicating a deeper issue.
A certified technician can accurately diagnose and repair the issue quickly. They also ensure everything is up to code and operating safely, which is paramount with gas appliances.
Preventive Maintenance Tips
Taking care of your oven can extend the life of the igniter and other parts. Simple habits can prevent many common problems from starting in the first place.
- Keep the oven interior clean. Spills and debris can fall onto the igniter and burner, causing blockages or short circuits.
- Avoid slamming the oven door. The shock can damage the fragile igniter element over time.
- Ensure proper ventilation around the oven. Excessive heat buildup can stress electrical components.
- Listen for changes. If the oven starts taking noticeably longer to ignite, it might be time to inspect the igniter.
Frequently Asked Questions
How Long Should An Oven Igniter Last?
The average lifespan of an oven igniter is between 3 to 5 years. This can vary based on how often you use your oven. Heavy use, like frequent baking, will lead to a shorter lifespan. If yours fails sooner, it could point to another problem stressing the component.
Can I Clean My Oven Igniter To Make It Work?
You can gently clean debris off the igniter with a soft brush, like a toothbrush. However, igniters fail due to internal wear, not dirt. Cleaning might help if there’s a visible blockage, but it won’t fix a weak or cracked element. Be very gentle to avoid breaking it.
Why Does My Oven Igniter Glow But Not Light The Gas?
If the igniter glows but no flame appears, the issue is likely not the igniter itself. The problem is usually a lack of gas flow. This could be due to a closed gas valve, a clogged burner tube, or a faulty safety valve that isn’t opening. The igniter glows but shuts off because the oven’s safety system detects no flame.
Is It Safe To Use My Oven If The Igniter Is Intermittent?
No, it is not safe. An intermittently working igniter can allow unburned gas to accumulate in the oven cavity. When it finally does ignite, this can cause a small, dangerous flashback. If your igniter is not working consistently, stop using the oven until it is repaired.
How Much Does It Cost To Replace An Oven Igniter?
The part itself typically costs between $40 and $100, depending on your oven model. If you hire a professional for the installation, total cost can range from $150 to $300, including labor and the part. Doing it yourself saves on labor but requires careful attention to safety steps.