Model #79040529400 KENMORE Built-In Oven, Electric

  • Control Panel
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  • Body
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  • Door
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  • Wiring Diagram
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Question and Answers

Q:

Why is my oven not heating up?

A:

Troubleshooting oven heating problems may depend on the model of the unit in question. If you have the model number of your oven and add it to this thread, it will help the expert provide a better answer. In the meantime, you can check some step by step troubleshooting from a previous expert for electric ovens that may help. I attached the link below. Hope this helps.

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Barbara H. -
March 12, 2011
A:

model # 790.40529400

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alonzo pierce -
March 12, 2011
A:

Without having the complete model number I will not be able to provide any model specific information, only general. Generally speaking the bake and broil elements alternate operation when it's in the Bake mode. Both elements in the oven must work in order for the oven to heat properly. The failure could one of the elements or possibly the control board. Turn the broiler ON to see if it heats and glows red. If it glows, the broil element is okay. Place the range in Bake and wait a few minutes and then open the door and then sprinkle a drop or two of water onto the bake element to see if sizzles. If the bake element is not working, the failure could be the bake element or the control board. In order to diagnose which one has failed will require disconnecting the power supply from the range and removing the bake element and testing the bake element for continuity using an ohm meter. You will need to disconnect the electrical connections from the bake element before checking the bake element for continuity.

I recommend resubmitting your question with more detail and the complete model number for model specific troubleshooting assistance. The model number will be behind the storage drawer along the frame.

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Korinna S -
Sears Technician
March 12, 2011
A:

The above information, will still pertain to your model. If you require further assistance, please get back to us with more detail on the issue.

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Korinna S -
Sears Technician
March 12, 2011
A:

Its a whirlpool accubake #RS696PXGQ0 The elements work

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Crystal Garton -
October 06, 2012
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Q:

Removing vent tube to replace vent screen on Kenmore Oven Model #790.40529400

A:

Managemylife.com is a great place to find the answers to just about anything, especially on appliances. I'm sorry about the difficulties your having with your Kenmore Oven. I did some research for you at Managemylife.com and found an expert answer to a similar question that I hope will help until your expert can answer your specific question. I attached the link below.

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James -
July 06, 2011
A:

Thank you for your question and I understand your concern.

There are no instructions available for removing and removing and reinstalling the vent tube adapter with converter. It appears you must remove the control panel to access the vent tube and vent tube adapter.

This type of repair will likely require a service technician to access and reinstall the converter. It may not be as simple as it should be but you won't know until you remove the control panel and make a visual inspection of how the vent tube and vent tube adapter is secured. NOTE: Disconnect the oven from the power supply before removing the control panel.

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website: Sears Home Services .

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Joey S -
Sears Technician
July 07, 2011
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Q:

Can the control module on my Kenmore wall oven (79040529400) be tested for "good/bad" off of the unit?

A:

Since you know how to pull the oven out of the wall, I recommend shutting off the breaker and checking the wiring connections between the oven terminal block and the wires in the junction box. I you have the technical ability to safely check the voltage from the wires in the junction box, you can determine whether you have the proper 240 volt power supplied to the oven. In most home electrical systems, the black and red wires supply the L1 and L2 legs of voltage for the range. You should not check this live voltage unless you are completely confident in your technical ability to safely take this measurement using a volt/ohm meter. Contact an electrician or technician if necessary.

If the voltage supply to the oven is okay, you could have a failed safety thermostat that could interrupt the L2 leg of 240 volt power to the control board. The wiring diagram for your range is shown below. This diagram shows the safety thermostat in the L2 supply to the control board. The parts diagram is shown in the second image. The safety thermostat is Key 119 on this diagram. You can check this thermostat (with the electrical power to the oven disconnected) by removing at least one wire and measuring the resistance across the leads to the thermostat. If the thermostat is good, it will measure near zero ohms of resistance (continuity). If the thermostat is open (measures infinite resistance), then it is bad and will need to be replaced.

These diagnostic checks are normally performed by a technician before checking the control board. If all of these checks are okay, then the technician would verify L1 and L2 voltage going into the control board. If voltage into the control board is okay, then a bake cycle would need started and the L2 voltage out of the K4 relay would need to be checked. If this voltage is missing, then the control board is bad. If L2 voltage out of the K4 relay is okay, then the L1 voltage out of the K2 relay would need to be checked for the bake element. The broil element gets L1 voltage through the K1 relay. Since neither the bake nor broil element is heating, it would be more likely that you have a failed K4 relay. These tests would need to be performed by a service technician with the control board still installed in the oven. Since this diagnosis requires live voltage checks with the oven partially disassembled, I recommend calling a service technician to diagnose the control board. Live voltage checks are dangerous and can result in lethal electrical shock if not conducted properly.

If you need more help, resubmit your question with additional details.

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Lyle W -
Sears Technician

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