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Bosch oven not heating
Common reasons your Bosch oven is not heating
The most common reasons your Bosch oven is not heating are a cracked igniter, defective electronic control board or a broken bake element.
61% of the time it's the Igniter
26% of the time it's the Electronic Control Board
4% of the time it's the Bake Element
9% of the time it's the Something else
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Most common repairs needed to fix a Bosch oven
Igniter Replacement
When an oven igniter is faulty, it can prevent a burner from igniting, resulting in no heat from the bake or broil burners in the oven. A failed igniter could also cause difficulty in lighting the burner, requiring multiple attempts to achieve ignition. The igniter may emit a clicking sound without successfully lighting the gas, indicating a malfunction. In some cases, the igniter may not produce any visible spark at all. An igniter failure can lead to delayed ignition, causing a noticeable delay between turning the knob and the burner lighting.
Electronic Control Board Replacement
An inoperative electronic control board can lead to various failures in an oven, including a lack of power or heating in the oven, or prevent the oven from turning off. This is because the board serves as the brain of the oven, controlling crucial operations such as regulating oven temperatures, running cooling fans, controlling cooking time and controlling the self-clean cycle of the oven. If the electronic control board malfunctions, it can disrupt communication between many different components. A failing board may prevent the oven door latch from engaging, or may cause a chattering or clicking noise from the oven or emit a burning odor. Due to the potential impact on multiple components, it is advisable to have a Sears Home Services professional conduct diagnostic tests on the board to confirm if replacement is necessary.
Bake Element Replacement
A broken oven bake element will prevent the element from heating. In some cases, the bake element may show visible signs of damage, such as cracks, blisters, or burn marks. A failing element may exhibit an inability of the oven to reach or maintain the set temperature. You may notice uneven cooking or prolonged cooking times. If the element is severely damaged, it may cause sparking, smoking or odd noises during operation. Having a Sears Home Services professional address these symptoms promptly is essential to ensure consistent and effective baking performance in the oven.
Why is my Bosch oven on but not heating up?
Follow these troubleshooting steps and diagnostic techniques to identify and potentially fix the underlying problem causing your Bosch oven to not heat up.
First of all, if you’re nervous about working on your gas oven (or not completely confident in your DIY appliance repair abilities) then you’ll need to schedule a Sears Technician to diagnose and repair your oven when it won’t heat. Safety should always be your highest priority when fixing appliances—even if you need to have someone repair your oven for you.
Even if you're sure that you'll have an appliance technician complete the oven repair, it doesn’t hurt to understand the troubleshooting and repair process involved in fixing a gas oven that won’t heat. There's a chance that you can follow some of the troubleshooting steps described below and safely fix the oven yourself.
If you want some practical troubleshooting advice to see if you can fix a non-heating gas oven yourself, you're in the right place. Carefully follow the troubleshooting and diagnostic advice described below to repair a gas oven that isn't heating.
Basic Troubleshooting Steps To Fix a Gas Oven That Won’t Heat
When troubleshooting any appliance failure, start with the basics. Sometimes a simple fix does the trick.
Check the Gas Supply
Just about anyone can follow these basic tips to check the gas supply going to the range or wall oven:
- If you’re troubleshooting the oven on a gas range, turn on a surface burner to see if it’s getting gas. If a surface burner works, then you know that your oven should be getting gas as well.
- If the surface burner doesn’t work, check the gas supply cut-off valve for your stove to make sure that it's open.
- If you’re troubleshooting a wall oven, check to see if the broil burner gets gas and heats up (if your wall oven has a separate broil burner). If you have a double oven, you can check to see if the 2nd oven is heating. If other burners in a wall oven are heating, then you know that the inoperative oven burner should be getting gas as well.
- If no burners in your wall oven are heating, check the gas supply cut-off valve for the oven to make sure that it’s open.
- If gas supply valve for your stove or wall oven is open and you’re not getting gas to the appliance, check other gas appliances in your home such as the gas dryer. If your entire home is without gas, check the main gas cut-off valve for your house. Open the main cut-off valve if it’s shut. This may restore gas to your oven and other appliances so they work properly.
If the main gas cut-off valve for your home is open and no appliances are getting gas, then you need to contact your gas supplier to figure out what’s wrong.
If other appliances are getting gas but you suspect that your wall oven or stove isn’t getting gas, then you’ll likely need to have a plumber or gas technician from your gas supplier fix the gas supply going to your stove or wall oven.
Advanced Troubleshooting For a Gas Oven That Won’t Heat
When the basic troubleshooting steps don’t do the trick, you’ll need to conduct some advanced troubleshooting to fix a gas oven that isn’t heating. Nothing’s better than a YouTube video to describe advanced troubleshooting for a non-heating gas oven. Follow the steps in this Sears PartsDirect YouTube video to fix your gas oven:
After the video goes through some of the basic troubleshooting steps described above, the following diagnostic techniques are used to figure out what’s wrong with a gas oven that won’t heat.
Test the Oven Igniter
Most gas ovens use a glow bar ignition system that uses this ignition process:
- The control sends electrical current through the igniter and safety gas valve to light the oven burner and heat the oven.
- The igniter heats up but the safety gas valve won't open to ignite the burner until the igniter reaches a safe ignition temperature.
- As the igniter heats up, the resistance of the igniter element decreases and more current flows through the circuit to the safety gas valve.
- When the igniter reaches ignition temperature, its resistance is low enough to allow enough current to flow through the circuit and open the safety gas valve.
- Gas flows through the open valve and to the burner and ignites.
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.
Pull the bottom panel out of your cold oven. Start the oven and see if the igniter glows.
If the igniter glows but the burner doesn’t ignite because the gas valve doesn’t open, then you’ll likely need to replace the igniter. As noted in the video, if you're uncertain whether your glowing igniter has failed, you can schedule service for your oven and have a Sears service technician check the amp draw through the igniter circuit.
If you’re convinced that the oven igniter is bad, then you can order a new igniter and replace the igniter. Replacing a gas oven igniter is a relatively safe repair that most DIY’ers can accomplish on their own because it doesn’t involve disconnecting any gas lines in the oven. Follow the steps in this YouTube video to replace the oven igniter:
Now, if the igniter doesn’t glow, then the igniter element may be broken. You’ll need a multimeter to check resistance through the igniter so see if the element is bad.
Unplug the range. For safety, always disconnect power before checking resistance. To check the resistance of the igniter, put the meter leads on the igniter terminals. If you measure between 10 and 2,500 ohms, then you know your igniter is okay.
If the igniter measures no continuity, then you need to replace the igniter.
Test the Safety Gas Valve
Next, check resistance through the safety gas valve. The meter should measure less than 5 ohms of resistance through the terminals on the safety gas valve.
If the safety gas valve measures no continuity, you can have a Sears technician replace that part. Replacing the safety gas valve involve disconnection of gas lines inside the oven.
Check the Wiring and Control Board
When you find that the igniter and safety gas valve appear to be okay, you’ll need to check wiring in the ignition circuit and the electronic oven control board.
With electrical power still disconnected from the oven, access the back of the electronic oven control board and check resistance through the ignition circuit wires connected to the electronic control board.
If you measure the same resistance through the ignition circuit as you measured through the igniter (between 10 and 2,500 ohms), then replace the electronic control board because you know that the wiring through the ignition circuit is okay.
If you measure infinite resistance (also called an open load) through the ignition circuit wiring, then you'll need to trace the wires through the ignition circuit and repair the broken wire (with the oven still disconnected from electrical power).
These DIY troubleshooting steps should help you fix a gas oven that isn’t heating in most situations. If you can’t figure out what’s wrong and fix the oven on your own, don’t hesitate to schedule oven repair service and we’ll send a Sears Tech right out to your home to fix the oven.
What to expect when you experience a Bosch oven not heating issue
How is the not heating problem fixed?
Correcting most not heating problems usually involves replacing the igniter, electronic control board or bake element. However, there are many potential causes, so a thorough diagnosis is key to fixing the problem. An accurate diagnosis is essential to understanding how much the repair will be.
Sears Home Services recommendations for an oven that is not heating
When the oven is not heating it can be for many reasons. To avoid replacing unneeded parts we recommend having a Sears Home Services professional perform diagnostic tests to identify the root cause of the problem. Our technicians are experienced at diagnosing all types of oven failures.
What to look out for with an oven not heating diagnosis
Diagnosing modern appliances without proper knowledge and training can be difficult. Without using proper diagnostic techniques, fixing your oven problem will only be achieved through changing parts on a hunch. Appliances, especially in the last 10 years, have become extremely advanced, and many models have electronic parts that are difficult to test. DIY repairs on the latest appliance models are becoming increasingly difficult.
When searching for Bosch oven repair near me, be sure to choose Sears Home Services as your service provider. We have technicians in your neighborhood that know Bosch ovens like nobody else.
Troubleshooting a Bosch Oven Not Heating Up
When your Bosch oven is not heating up, check the bake element for damage if you have an electric model. If the bake element is damaged or broken, you’ll need to have it replaced. A problem with the house circuit breaker or a bad electronic control board will also prevent a Bosch oven from heating.
A blown fuse in an electric or gas model will result in a Bosch oven not heating.
In a Bosch gas oven, a bad igniter, problem with the gas supply or bad electronic control board can prevent the oven from heating. Make sure the gas cut-off valve for the oven is fully open.
Try resetting your Bosch oven by shutting off the house circuit breaker to completely kill power to the oven. Leave the power off for 2 minutes then reset the circuit breaker to restore power. This will sometimes fix a Bosch oven not heating up.
If these troubleshooting tips don’t help, schedule oven repair services to have a Sears Home Services technician visit your home and repair your Bosch oven.
Troubleshooting a Bosch Gas Oven Not Heating
When you notice your Bosch gas oven not heating, check the gas supply cut-off valve. Open that gas supply valve if you find it shut. Check other gas appliances in your home to make sure that you have an adequate gas supply going to the oven.
Try resetting your Bosch oven by shutting off the house circuit breaker to completely kill power to the oven. Leave the power off for 2 minutes then reset the circuit breaker to restore power. This will sometimes fix a Bosch oven not heating up.
A blown fuse or a bad igniter can prevent your Bosch gas oven from heating. If the above troubleshooting tips don’t help when your Bosch gas oven is not heating, schedule Bosch appliance repair service and we’ll send a Sears Home Services technician to your home to fix the oven.
When a Bosch oven fails to heat, broken elements or a faulty temperature sensor can be the prime suspects. Attempting random fixes can waste time and risk further damage. Instead, call gas range repair near me or electric help, depending on your model. Proper diagnosis restores the consistent heat you need for perfectly cooked meals.
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Frequently Asked Questions
Repair Oven Resources
Look out for these common oven problems and act quickly when you see these issues happening.
When your oven malfunctions, the decision to repair or replace it can be a tough call.
Identifying the root cause becomes paramount when your oven starts acting up.
A malfunctioning oven can disrupt meal preparations, necessitating swift action.
Glossary Terms
A thermocouple is a sensor used for measuring temperature, consisting of two different metal wires joined at one end, which generate a voltage proportional to temperature changes.
An oven bag is a heat-resistant, nylon or polyester bag designed for cooking a wide variety of foods in the oven, ensuring moist and flavorful meals by trapping moisture and flavor inside.
An oven rack is a removable shelving unit inside an oven that holds cookware, allowing air to circulate around the food for even cooking and baking.
A dishwasher gasket is a flexible seal that prevents water from leaking out of the dishwasher door during operation. It's crucial for maintaining the appliance's efficiency and preventing water damage.