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Old 05-29-2012, 09:32 PM   #1
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Oven did not light after cleaning


Hi;
My mom cleaned the Kenmore gas wall oven today. She used Easy-Off the night before, then wiped with damp cloth this morning. It came out very clean, but when she wanted to use the oven a couple hours later, it did not light.

Inspection revealed that the ignitor was glowing brightly, but the gas was not coming out to light the burner.
I did some research into these ignition systems, and found that they rely on a specific current to flow through the ignitor before the gas valve will open.
Thinking that it was a coincidence that the ignitor on this 5-1/2yr old oven was bad, I scheduled a service call with the gas company.

Tonight, I just could not accept the coincidence, and thought that perhaps something got wet during cleaning, and that it would have dried out by now.
So I turned the oven on again, and sure enough, after about a minute, the burner lit and the oven came up to temperature. I waited after the burner had shut off for it to turn back on when the temperature dropped, and it did. So I guess it was just something getting a bit wet, and shunting the current past the gas valve?
This is my educated guess, but I have not had experience with this type of ignition system before.
Our stove uses a spark ignition system, and that always fails to work after the burners have been washed.

Is this a common problem, or did we do something wrong while cleaning?

Thanks

FW

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Old 05-29-2012, 11:17 PM   #2
#1 HAWKEYE FAN
 
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Oven did not light after cleaning


coincidence likely. Gas valve, burner tube, igniter are all below the oven bottom and not likely to get sprayed unless she took the bottom out to expose parts. Igniter has to draw about 6.2 amps before the gas valve will open to allow gas flow, igniter's can glow red hot and still not draw the required amperage. Not sure exactly why it did not work the first time but I would suspect the igniter getting weak, very common problem

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Old 05-30-2012, 08:32 AM   #3
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Oven did not light after cleaning


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coincidence likely. Gas valve, burner tube, igniter are all below the oven bottom and not likely to get sprayed unless she took the bottom out to expose parts. Igniter has to draw about 6.2 amps before the gas valve will open to allow gas flow, igniter's can glow red hot and still not draw the required amperage. Not sure exactly why it did not work the first time but I would suspect the igniter getting weak, very common problem
That is what I fear. But if the ignitor will last another couple of months, it will give us time to add the oven to our service plan, which we have through the electric/gas utility and hopefully then repair will be much less expensive.
That said, they have a "pre-existing conditions" clause, and don't pay for all parts. The ignitor is $113 from Sears, and looks like a part I could replace myself if the cost of labor is not included with the service contract.
In any case, I'll be watching it.

FW
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Old 05-30-2012, 08:48 AM   #4
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Oven did not light after cleaning


$113.00 ? what is the model#? that sounds like about double normal price
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Old 06-04-2012, 01:43 PM   #5
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Oven did not light after cleaning


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$113.00 ? what is the model#? that sounds like about double normal price
The oven is a Kenmore model 790.30172400.
That is the price on Sears parts website.

As it turns out, the oven is working fine. Something must have gotten wet during cleaning.
I took this incident as a warning, and added the oven to the "worry free" service contract we have with the utility. The part is covered, so if it does eventually wear out, we won't have to foot the bill. Adding the oven to the contract costs less than $6 per month.

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