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RentAHubby  
#1 Posted : Tuesday, October 3, 2017 8:42:44 PM(UTC)
RentAHubby

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I got a beautiful double oven off craigslist. Upper oven works great. The stove top works great. The lower oven reaches about 150 degrees after 30 minutes.

I opened it up and tested the resistance of the heating elements. Both elements were 16-20 ohms.

There is a white light (or spark) on the control board that is mounted to the lower left when viewing from behind. It sparks about every 10-20 seconds and is clicking like a relay.

I need help determining if it is a bad sensor, bad board, or bad clock board. After some research I can't find out definitely which to order and they are all a bit pricey to just guess.

Thanks for your help.
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ThatGuy  
#2 Posted : Tuesday, October 3, 2017 9:21:54 PM(UTC)
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Could you post a picture or a video of what it is doing? Sparking sounds bad.
RentAHubby  
#3 Posted : Wednesday, October 4, 2017 8:18:18 AM(UTC)
RentAHubby

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Here is a link to a youtube video of the sparking...

https://www.youtube.com/watch?v=EOnnHTzS2Gk

In closer inspection, it's hard to say if it is sparking or lighting up. Maybe it's normal but ironically, this is from the upper oven which heats fine. The lower oven does not have the sparking when it tries to heat. Maybe this is normal since it is clicking from bake to broil during the preheat...

Thoughts? What should I be checking first to diagnose the no heat issue?

Thanks,

Jeff
ThatGuy  
#4 Posted : Wednesday, October 4, 2017 11:03:14 AM(UTC)
ThatGuy

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The sparking is coming from inside the relay. Its bright enough to see through the relay case. I would guess the relays are pretty burnt inside to arc that bad. Here is the wiring diagram.

Parts for Frigidaire FGEF304DKFA: Wiring Diagram Parts - AppliancePartsPros.com

I would check at the board, for power to the lower oven bake element. I'll bet you have a bad relay.
RentAHubby  
#5 Posted : Wednesday, October 4, 2017 2:59:02 PM(UTC)
RentAHubby

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Originally Posted by: ThatGuy Go to Quoted Post
The sparking is coming from inside the relay. Its bright enough to see through the relay case. I would guess the relays are pretty burnt inside to arc that bad. Here is the wiring diagram.

Parts for Frigidaire FGEF304DKFA: Wiring Diagram Parts - AppliancePartsPros.com

I would check at the board, for power to the lower oven bake element. I'll bet you have a bad relay.


Seems to have 110V coming out to each of the elements...

I realized I was testing the resistance of the broil heat element, not the bake element. The lower bake element has resistance of 23 ohms. The convection element has 43 ohms resistance.
RentAHubby  
#6 Posted : Thursday, October 5, 2017 8:41:56 AM(UTC)
RentAHubby

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Originally Posted by: RentAHubby Go to Quoted Post
Seems to have 110V coming out to each of the elements...

I realized I was testing the resistance of the broil heat element, not the bake element. The lower bake element has resistance of 23 ohms. The convection element has 43 ohms resistance.


>> So after much research and learning and testing and digging into my brain for past electrical knowledge, I think I'm figuring things out.

So, I was confused because I was getting voltage to the element but no heat. If I measure voltage from either side of the element to neutral, I get 119V. But if I measure across the two, I'm not getting 220V+, I get zero. I tested the upper oven heating element and I did get about 250V at the top when on but the bottom, when powered on gets only 120V to neutral but nothing if measured from L1 to L2 across the element itself. So I'm guessing one side is hot and the other is not kicking on when power is requested.

So does this mean the board is bad? or one of the relays on the board? I've soldered on motherboards and TV power supplies before to repair them. Is it realistic to replace just the relays on the board or do I just order and entire new board? They are pretty pricey so I want to make sure i get it right!

Thanks for the help thus far.

:)
ThatGuy  
#7 Posted : Thursday, October 5, 2017 11:33:48 AM(UTC)
ThatGuy

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This might help.......

Originally Posted by: ThatGuy Go to Quoted Post
The sparking is coming from inside the relay. Its bright enough to see through the relay case. I would guess the relays are pretty burnt inside to arc that bad. Here is the wiring diagram.

Parts for Frigidaire FGEF304DKFA: Wiring Diagram Parts - AppliancePartsPros.com

I would check at the board, for power to the lower oven bake element. I'll bet you have a bad relay.
ThatGuy  
#8 Posted : Thursday, October 5, 2017 11:40:29 AM(UTC)
ThatGuy

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Yes, you can replace the relays if you can de-solder and solder.

You just need the correct relays. Try Digikey and Mouser.
RentAHubby  
#9 Posted : Monday, October 9, 2017 5:47:57 PM(UTC)
RentAHubby

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So, I ended up ordering a new relay board for the lower oven elements.

I still am having the no heat issue.

I still only get 120V to ground on either side of the broil or bake elements. And I do not get 250V if read from one side to the other of the elements.

What does this mean? Does this mean my problem is actually the clock control board with all wires and buttons for the display? Is there any simple way of knowing on this oven without blindly replacing $150 boards?

:confused:

Thanks for the continued advice.
RentAHubby  
#10 Posted : Friday, November 10, 2017 9:15:53 AM(UTC)
RentAHubby

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So, I've replaced the relay board for the lower oven and the clock control board as per recomendations on the forums. I still have no heat on the lower oven on bake or broil.

Can someone help me get this figured out? I've already put in over $200 and still same issue present! Help would be greatly appreciated.
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