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Old 12-14-2021, 06:55 PM   #1
Jackching
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Default Range element thermal limiter

Would anyone know what type of limiter this is? It is used on a surface element used in ranges. The contact i circled is supposed to be closed at room temperature but is stuck in the open position. I can close it with slight pressure but once open, it will remain open until manually closed. I tried cleaning the contact and still no help. Any ideas on how to fix it or does anyone know the part to replace it?
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Old 12-14-2021, 08:39 PM   #2
sam_sam_sam
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Default Re: Range element thermal limiter

The by metal strip is stretched and you will have to buy a new for it to work correctly do not try to fix it because it will not work correctly anymore and could be an issue

Just buy a new temperature control for this stove go to appliances repair service center with the model number and serial number just make sure that you know the size of the element there should be a part number on the element if not just measure the diameter of the element because there are different wattages on these elements and you need to use the right type temperature control for the the right wattage element

I hope this helps you
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Last edited by sam_sam_sam; 12-14-2021 at 08:49 PM..
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Old 12-15-2021, 12:13 AM   #3
redwire
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Default Re: Range element thermal limiter

A radiant surface heating element has two switches:
A limiter-thermostat that regulates the element max. temperature to protect the glass ceramic glass cooktop from overheating. It's the smaller switch and is calibrated by the small setscrew. Because of this, the switch comes with the whole heating element assembly. They can't really split that up.

Second is a high-high temperature safety switch which is the one giving you a hard time. The safety switch might latch, once tripped that's it, do not burn down the house?
The high-high limit switch can false trip if it's getting heat from poor contacts or the crimp connectors at the wires can also heat it up. Your switch contracts look not great, they seem to be touching only at the corner - which means high resistance and they will get hot when current flows through them, which can make the switch trip. It's supposed to get pressed by the white plunger poking it.

You can try to get the contacts to mate flat. These things are finicky and a constant hassle to monkey with. I don't have the patience.
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Old 12-15-2021, 04:32 PM   #4
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Default Re: Range element thermal limiter

So the two replies are kind of conflicting each other. If this switch quits, does the whole element have to be replaced?
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Old 12-15-2021, 05:00 PM   #5
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Default Re: Range element thermal limiter

Not the element just the temperature control
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Old 12-15-2021, 06:38 PM   #6
redwire
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Default Re: Range element thermal limiter

They are sold as an assembly- the heating element, limit switch, and ceramic base. Example:
https://www.amresupply.com/catalog/E...ce-632517-AD1C
https://www.appliancepartspros.com/g...ap4345739.html
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Old 12-15-2021, 08:12 PM   #7
Jackching
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Default Re: Range element thermal limiter

Quote:
Originally Posted by redwire View Post
They are sold as an assembly- the heating element, limit switch, and ceramic base. Example:
https://www.amresupply.com/catalog/E...ce-632517-AD1C
https://www.appliancepartspros.com/g...ap4345739.html
Right. When i said element i meant the whole thing. Ok i was thinking i could find the limit switch on alieexpress or something like that but im not seeing anything. It looks like the limit switch would come off pretty easy. I was wanting to salvage the element and the base because it's brand new and the assembly didnt even work from the start when the stove was first purchased.
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Old 12-16-2021, 08:36 AM   #8
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Default Re: Range element thermal limiter

Just make sure that when you go to take off the control that hold the terminal ( with a wrench or an adjustable wrench ) goes into the element or you will break the ceramic housing the element terminals which breaks very easily

Last edited by sam_sam_sam; 12-16-2021 at 08:39 AM..
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Old 12-16-2021, 11:09 AM   #9
redwire
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Default Re: Range element thermal limiter

Post #1 shows a crack in the ceramic rim where the rod goes through, we don't know the history but OP says it's new so I would have gone after warranty. Somebody was rough on it.
At the center, the rod seems crimped in-place. Not sure how to remove the switch but I find these things are not repairable anyway.
Because it has a safety function and needs calibration for the limiter temperature, I think manufacturers just sell it as an entire assembly.
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Old 12-16-2021, 05:57 PM   #10
sam_sam_sam
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Default Re: Range element thermal limiter

Quote:
Originally Posted by redwire View Post
Post #1 shows a crack in the ceramic rim where the rod goes through, we don't know the history but OP says it's new so I would have gone after warranty. Somebody was rough on it.
At the center, the rod seems crimped in-place. Not sure how to remove the switch but I find these things are not repairable anyway.
Because it has a safety function and needs calibration for the limiter temperature, I think manufacturers just sell it as an entire assembly.
Are these units the newer versions or the older version because the older version that I have seen was made a little different
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Old 12-16-2021, 08:54 PM   #11
redwire
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Default Re: Range element thermal limiter

Many of these range heating elements are designed by E.G.O. who's getting them made in china. Haier US with GE, another mega-conglomerate appliance manufacturer as well.
Apparently the limit-thermostat keeps max to around 350C and above 400C trips the nuke meltdown switch.

Which part are you thinking is a newer design?
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Old 12-17-2021, 01:40 AM   #12
sam_sam_sam
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Default Re: Range element thermal limiter

The device that is mounted on the element
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Old 12-17-2021, 06:58 PM   #13
Jackching
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Default Re: Range element thermal limiter

Quote:
Originally Posted by redwire View Post
Post #1 shows a crack in the ceramic rim where the rod goes through, we don't know the history but OP says it's new so I would have gone after warranty. Somebody was rough on it.
At the center, the rod seems crimped in-place. Not sure how to remove the switch but I find these things are not repairable anyway.
Because it has a safety function and needs calibration for the limiter temperature, I think manufacturers just sell it as an entire assembly.
It was replaced under warranty. I was just seeing if it was salvageable for a backup. Sounds like im better off throwing it in the dump.
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