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Old 01-09-2017, 11:05 AM   #11
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Awesome. Called them and they won't talk to me at all because it is "a gas appliance" and told me to call a local rv repair service center. Ridiculous.
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Old 01-09-2017, 11:18 AM   #12
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It depends where they mounted the limit more then likely it not reading you heat exchanger but the outside housing.

The little bracket that holds he limit switch is attached to the heat exchanger itself as shown in this picture I've attached. I thought it may have been a poor design as it would pick up a lot of direct heat from being in direct contact with he heat exchanger itself but who I don't know...

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Old 01-09-2017, 12:14 PM   #13
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The little bracket that holds he limit switch is attached to the heat exchanger itself as shown in this picture I've attached. I thought it may have been a poor design as it would pick up a lot of direct heat from being in direct contact with he heat exchanger itself but who I don't know...

Attachment 127771
Is that black point the sensor? is that what is touching the heat exchanger? if it is move it down an 1" and try it again, It should not be touching the heat exchanger at all IMO...I'm going to see if I can find something on that for you....
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Old 01-09-2017, 12:36 PM   #14
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Furnace Limit Cycling - Potential fix?

The two screws is what mounts that limit switch in the middle. It's not in the picture, I had the wires out and jumpered for a test. You can see how that little metal bracket is spot welded to the heat exchanger itself.

Btw, thanks for any info you can find for me. Really appreciate it!
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Old 01-09-2017, 12:38 PM   #15
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I just got off the phone with the tech, he sent me a picture to my phone, that is not your limit, your limit is a click-on it mounts over that whole in the picture you sent Pm me your phone and I wii send them to you.
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Old 01-09-2017, 12:49 PM   #16
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yes but there is a air gap between the center click-on can only be read from the disk it self the bracket means nothing. I have used click-ons for years. the blower will push air and heat past it, that is what it is reading not the heat exchanger. either you have a bad limit or not enough air being exhausted heating it up open a slot for a duct and see what happens, if you have to add the duct to your basement Did you call I had no problem getting a picture and info from the tech dept call 423-752-1317 ask to talk to the tech dept.....
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Old 01-09-2017, 12:57 PM   #17
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Furnace Limit Cycling - Potential fix?

Yeah that's what mine looks like now. It just wasn't screwed on like this as I had it off for testing at the time I took the picture. You can see better how yours is attached to the heat exchanger directly just like mine.
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Old 01-09-2017, 01:31 PM   #18
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Hey Witch Doctor, can you confirm this is the number you called? I just tried to call it and it says it's been disconnected or no longer in service. Guessing there was a type in the phone number somewhere?
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Old 01-09-2017, 01:41 PM   #19
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hey witch doctor, can you confirm this is the number you called? I just tried to call it and it says it's been disconnected or no longer in service. Guessing there was a type in the phone number somewhere?
sorry typo...423-775-2131 PS: it not attached to the heat exchanger the bracket is but there should be a air gap between both the click-on should not touch it let me know what they say
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Old 01-09-2017, 02:01 PM   #20
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Thanks for the number, but they were rude and wouldn't answer any of my questions. Referred me to a service center. Was resistive so me asking any questions. Stated that the limit switch I have in there is the correct one and that was it. Bummer. I tried to ask questions nicely and such but she wasn't having it. lol
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