Range element thermal limiter

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  • Jackching
    Senior Member
    • May 2017
    • 127
    • Canada

    #1

    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?
    Attached Files
  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6026
    • USA

    #2
    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
    Last edited by sam_sam_sam; 12-14-2021, 08:49 PM.

    Comment

    • redwire
      Badcaps Legend
      • Dec 2010
      • 3900
      • Canada

      #3
      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.

      Comment

      • Jackching
        Senior Member
        • May 2017
        • 127
        • Canada

        #4
        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?

        Comment

        • sam_sam_sam
          Badcaps Legend
          • Jul 2011
          • 6026
          • USA

          #5
          Re: Range element thermal limiter

          Not the element just the temperature control

          Comment

          • redwire
            Badcaps Legend
            • Dec 2010
            • 3900
            • Canada

            #6
            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

            Comment

            • Jackching
              Senior Member
              • May 2017
              • 127
              • Canada

              #7
              Re: Range element thermal limiter

              Originally posted by redwire
              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.

              Comment

              • sam_sam_sam
                Badcaps Legend
                • Jul 2011
                • 6026
                • USA

                #8
                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, 08:39 AM.

                Comment

                • redwire
                  Badcaps Legend
                  • Dec 2010
                  • 3900
                  • Canada

                  #9
                  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.

                  Comment

                  • sam_sam_sam
                    Badcaps Legend
                    • Jul 2011
                    • 6026
                    • USA

                    #10
                    Re: Range element thermal limiter

                    Originally posted by redwire
                    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

                    Comment

                    • redwire
                      Badcaps Legend
                      • Dec 2010
                      • 3900
                      • Canada

                      #11
                      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 350°C and above 400°C trips the nuke meltdown switch.

                      Which part are you thinking is a newer design?

                      Comment

                      • sam_sam_sam
                        Badcaps Legend
                        • Jul 2011
                        • 6026
                        • USA

                        #12
                        Re: Range element thermal limiter

                        The device that is mounted on the element

                        Comment

                        • Jackching
                          Senior Member
                          • May 2017
                          • 127
                          • Canada

                          #13
                          Re: Range element thermal limiter

                          Originally posted by redwire
                          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.

                          Comment

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