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GE JB640SR7 oven. I have power to the ERC 240 across red and

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GE JB640SR7 oven. I...
GE JB640SR7 oven. I have power to the ERC 240 across red and black 110 across red to white and black to white. New ERC. ERC gives me no display and no functionality where else could the problem be? Stove works fine. Burner on indicator lights up and hot stovetop lights up unless erc is connected then I get no indicator lights but burners still work
JA: Can you guesstimate how old your GE is? And just to clarify, what's the exact model?
Customer: I would guess 3 to six years and the model is J B640S R7SS
JA: Do you plan on doing the work yourself?
Customer: Yes I have already placed the ERC now I would like to find the problem and finish this off.
JA: Anything else we should know to help you best?
Customer: Not that I can think of.
Submitted: 10 months ago.Category: Appliance
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Answered in 1 minute by:
1/4/2017
Appliance Technician: Kelly, Appliance Technician replied 10 months ago
Kelly
Kelly, Appliance Technician
Category: Appliance
Satisfied Customers: 23,279
Experience: Highly accurate diagnostician with over 30 years experience!
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Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Please allow me just a few minutes to look over the wiring for your model.

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Customer reply replied 10 months ago
Ok Thank youKevin
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Kevin, looking at the schematic (attached), it has to be a faulty oven control if you have the voltages you posted. So, the oven control will need to be replaced.

The link below is to the part you will need.

CLICK HERE

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Customer reply replied 10 months ago
KellyThat is the part I just replaced. It gives me no display as well.
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Is the black wire on the L1 relay and red on the L2 DLB relay as shown in the schematic?

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Customer reply replied 10 months ago
I just double checked they are hard to mess up because they are color coded on the back of the relays. The interesting part is there is a burner on light and a hot cooktop light. When the oven control unit is connected these lights do not function. However when it is disconnected they work. The burners work no matter what. Not sure if that helps.
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Have you measured the voltage at the outlet to see if you see the same voltages?

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Appliance Technician: Kelly, Appliance Technician replied 10 months ago

With the range unplugged....

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Customer reply replied 10 months ago
I get the same voltage at the outlet. I also checked the burners and get the same reading there.
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Do the burners all work fine when the oven control is disconnected?

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Customer reply replied 10 months ago
with the range unplugged
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Do the burners all work fine when the oven control is disconnected?

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Customer reply replied 10 months ago
they all work with unconnected. They also work with the oven control connected it is just the cooktop and burner lights that quit working with the oven control connected.
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Something has to be mis-wired if you have no display on the clock.

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Customer reply replied 10 months ago
I don't know how that is possible i took pictures on before i took it out and it is color coded and i put it back the exact same way.
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

What was the original issue the control was replaced for?

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Appliance Technician: Kelly, Appliance Technician replied 10 months ago

You as well, thank you! Let me know how it goes!

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Customer reply replied 10 months ago
No display or control over the oven. In other words I am getting the same result with the new unit that the old one had.
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

So there has to be an issue with either the wiring or the control. What happens if you disconnect the red wire from the clock? Will the display come on?

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Customer reply replied 10 months ago
let me check
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Thank you.

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Customer reply replied 10 months ago
No there is no change
Appliance Technician: Kelly, Appliance Technician replied 10 months ago

Well, everything you have shown as far as voltages is correct. If you are certain the wiring is all correct, I am not sure what you have going on. I will see if another may have some input.

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Customer reply replied 10 months ago
Thank you I am completely confused on this one. It should have been an easy fix.
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Kelly
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