Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner

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Carrier Forced air furnace will not ignit.

It is located in my attic and is horazontally mounted. I can hear and see the firing spark. I can see a pilot flame light up for a few seconds and then it goes out. I am not sure how to test or even what to test. I don't know what it is that is suppose to turn off the sparker and keep the gas flowing to the pilot.

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  • castlelakein Dec 05, 2008

    Thank you Skeeter & IdahoHAVC;

    I removed a cover for a direct view of the pilot. There is not a small probe near it. It has a typical gravity heater flame director which when it lights sends a flame sideways touching the top of the spark ignitor. The spark ignitor looks like a larger version of the one in my BBQ. Two quick points of clarification: 1. It is Carrier Model # 58EG060311 (I could not enter my request using the actual model # for some reason) 2. I observed that the pilot flame stays on as long as it is attempting to light and the sparker is operating which makes a vibrating metal noise. Normally, it would make this sound for about 10 seconds, click, and the main burner would ignite.

  • castlelakein Dec 06, 2008

    Thank you IdahoHVAC.

    Please note that my unit does not have a probe to replace. The pilot flame burns onto the top portion of the spark ignitor. The spark ignitor looks like a cigarette with a half inch wire coming out of the top.

  • castlelakein Dec 10, 2008

    Thank you IdahoHVAC,

    I called a repairman. It turns out that my spark ignitor tip, when heated by the pilot flame, sends back a signal (much like a therocouple) to the intermitent pilot control box. It turned out that both my control box and valve were shot.

    I learned a lot and I appreciate you taking the time to address my problem.

  • Ken Bledsoe May 11, 2010

    Let me ask you one thing. Is there a small probe right next to the pilot looks like a small wire?


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Skeeter is prob right your flame sensor is bad.. clean it or buy a new one, give your supplyer model number or bring it in... take a pic before disconnecting it.. If it fixes the problem, skeeter gets credit.. Thanks

Posted on Dec 04, 2008

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  • Armando Bernal Dec 05, 2008

    Take it off and replace the probe. It's bad. A local dealer or Contractor may sale you one, expect the price to be between 10 and 30 dollars, depending on your dealers mark-up.

  • Armando Bernal Dec 07, 2008

    With the ignitor there should be a sensor of some sort, thermo couple, pile, sensor. That needs replace, the probe we speak of comes in many forms...

  • Armando Bernal Dec 11, 2008

    Thanks for trying? jee thanks


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