Jenn air oven not heating. Jenn-Air ovens are a common range of ovens that use a spark to ignite an otherwise natural gas fuel in order to heat the oven cavity.
Problem with igniters is most commonly reported as the problem when this style of oven fails to heat.
They are easily identifiable because of their location on the front of the unit and need replacement if they stop sparking or don’t glow at all.
Jenn air oven not heating
Jenn Air oven not heating. The igniter is the most commonly defective part for an oven, not heating. Second, the igniter gets hot enough to glow and ignite the gas in the oven burner. If the igniter gets weak, or there’s a failure with the safety valve, it will fail to open properly, causing an issue with your Jenn-Air oven not staying lit but giving you plenty of heat as it vents into your kitchen instead of burning inside your burners.
Here are some common issues that relate to this problem.
The bake element is heating properly
When the bake element is heating there will be a red light and if the element falls dark this indicates that it isn’t working. If it does not work then you should test for continuity to see if it is working.
To test for continuity, use a multi-meter on high and turn up the heat to 400 degrees so that it warms up.
If there is no juice from the element then you should replace it once before putting over 200 pounds of dough in an oven.
The igniter for continuity
Igniter failure is the most common defect in an oven that doesn’t heat. To determine if it is defective you observe the igniter when it is on.
If it glows for more than 90 seconds without igniting the burner, then this means that the igniter’s too weak to open the safety valve properly, and therefore your oven won’t heat up.
Also, it may be a good idea to check whether your igniter has continuity with a multimeter; if not replace it.
Broil element has burned out
Inspect the broil element for holes or blisters. When the element is heating correctly, it glows red hot.
If the element isn’t glowing red hot, this indicates that it’s not being heated and you will need to replace it along with any wires on your plate that may have been damaged when you test the element.
To determine if either part needs replacing: using a multimeter, test the set wire and broil element for continuity by placing one probe on one terminal and the second probe on another terminal.
If there is no continuity, then both parts will need to be replaced including matching wires from your separated wires unless they are optional and don’t affect the operation of your device be sure to measure those in case they aren’t labeled properly.
The Thermal fuse has blown
If the oven gets too hot, the thermal fuse can break in order to turn off power to the unit. If this were to happen, it would mean that the oven would no longer heat up properly.
However, this is not a common occurrence. To determine whether the thermal fuse is at fault, use a multimeter to test for continuity instead of using a cookbook.
If the thermal fuse does not have continuity and you’ve checked your ingredients thoroughly, I recommend you replace it.
The thermal fuse cannot be reset if it has broken unfortunately, we won’t be able to make another recipe as is.
Oven Control Board issue
In the oven interior, there are four heating elements: one for baking and three for broiling.
The power for the heating element is controlled by electronic circuitry called a control board.
Certain components on the logic board fail and prevent voltage from reaching its final destination.
However, before replacing the control board test all of the heating elements to ensure they work properly.
If they function normally, replace the defective logic board to solve your problem. Testing this motherboard is a challenging process but if you believe it is defective, your best option is to replace it.
Faulty Relay Board
If the heating element on your oven fails to heat up for no apparent reason, you may be having a problem with the relay board.
The relay board is responsible for delivering electrical current to the heating element.
This prevents overheating and is designed to protect both your oven and yourself. So if it’s not sending power to the element, then there must certainly be an issue with the relay board, Replace it.
Defective Valve and Pressure Regulator
The part at fault most frequently is the valve and pressure regulator. However, this may not be the case every time.
Before replacing the valve and pressure regulator, check all more commonly defective parts such as leaks.
Problem with Temperature Control Thermostat
The oven thermostat is responsible for regulating the broiler temperature. If your oven is having this problem, it could be that the oven thermostat itself is defective.
It is a thin copper tube attached to a slightly thicker tube in which there’s a type of hydraulic fluid inside.
As the broiler temperature starts to rise, said fluid expands and puts pressure on the small activator inside the thermostat, shutting off the heat.
As the boiler cools down, the pressure reduces again and allows the heat in again.
You cannot really test this at home, so if you are trying to troubleshoot it yourself, know that it likely has to be replaced instead if this turns out to be what’s causing your oven broiler heating problems.
Jenn air oven not heating