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FIXED 790.75233312 Kenmore Elite Range - oven slow/low heating

Ready_set_g0

Premium Member
Joined
Aug 3, 2022
Messages
4
Location
07728
Model Number
790.75233312
Brand
Sears Kenmore
Age
6-10 years
Hello,

I tried researching old posts prior to see if I can find guidance prior to posting this, but coudn't exactly connect to what my Stove is doing. Apologize in advance if this has been answered elsewhere and I did not see it.

My Kenmore Elite 790.75233312 heating has slowed to a crawl. The broiler and range seem to work fine. I took the bottom cover and gaurds out and this is what I was able to observe.
- The heating ignitor that heats up first seems to get very hot and does eventually light the gas (1 minute or so).
- When I had the gaurd off and ignited the gas with a lighter, it ignited but fire did not spread to the small holes closest to the ignitor. (as if has wasn't coming out here)
- Whether I manually light it or let the stove catch fire on its own, it seems like the gas is only coming out of 1/2 of the small holes, on the right side of the U shaped piece that gas comes out of. The fire does not spread to the left side. When I have all shield in place and have the stove do it's thing, I can see the glow and heat on the right side, but nothing on the left.

Any thoughts on what could be wrong? Is there not enough gas being pushed into it?

Thanks for your help!

Added complete model number
 
Last edited by a moderator:

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
5,617
Location
Ontario, Canada
Kenmore Elite 790.7523

That model number is incomplete. Please post the complete information as found right on the appliance's model and serial number tag, not the owner's manual or bill of sale.

You can find tips for locating the model and serial number identification tag on your appliances at the following link:

LINK > Model Number Tag Location Guide


Dan O.
 

dashriprok

Appliance Tech
Joined
Jun 3, 2018
Messages
129
Location
Michigan
After you get your complete model number which is crucial, the glow bar igniter is bad. Most of those igniters that I change still glow but that doesn't mean they're good. In a properly working hot surface igniter, the resistance should drop after being on for 30ish seconds. That allows higher current to flow which opens the gas valve. Yours has too high resistance thus is either slowly or barely opening the gas valve. Replace your igniter.
 

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
5,617
Location
Ontario, Canada
Model Number 790.75233312

That model was made by Frigidaire and uses a glow ignitor ignition system (see the following link). On it the ignitor needs to draw a specific amount of current (amperage) to fully open the gas valve. As they age they get weak and can still glow but fail to draw the proper amount of current to open the gas valve. It should draw 3.2 - 3.6 amps if working within specs.

LINK > Understanding Gas Oven Ignition Systems

To test whether that is the cause in your case the ignitor's amperage draw would need to be tested. That requires an ammeter.

Testing Ignitor Amperage Draw
ignitor amperage 2.jpg


The ignitor causes about 85% of the problems in such a system and seems to be negatively affected by the humidity in summer months making them more prone to failure at that time of year.

LINK > Kenmore 790.75233312 Oven Ignitor 316489403


There is a very slim chance the oven gas valve might be responsible but I wouldn't suggest it be considered without first confirming the proper amperage draw of the ignitor.

Dan O.
 

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Ready_set_g0

Premium Member
Joined
Aug 3, 2022
Messages
4
Location
07728
Thanks. I looked everywhere for a place I can find this part in person but no such luck. I ended up breaking the ceramic piece off the one in my oven before testing with an ammeter (which I would need to buy or rent) so I just ordered the new ignitor to fix the one I broke; hopefully it corrects the issue.

I'll follow up. Thanks!
 

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
5,617
Location
Ontario, Canada
I looked everywhere for a place I can find this part in person but no such luck

There are so many different variations of that part, I'm not surprised no one carries the exact one on hand. 😥

Let us know how it goes.

Dan O.
 

Ready_set_g0

Premium Member
Joined
Aug 3, 2022
Messages
4
Location
07728
Hello,

I ordered the part and it was easy to swap out. It works! The stove heats up to 350 in 10 minutes now.

Thanks for the help everyone!
 

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
5,617
Location
Ontario, Canada
Glad to hear it.

Those ignitors will be problematic the whole life of the range. They'll need periodical replacement. The burner should usually ignite into flame in close to a minute or less after the ignitor starts glowing. If they start taking much longer, you'll know the ignitor is getting weak and will likely need to be replaced.

Thanks for the followup.

Dan O.
 
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