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

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Code 7 on coleman furnace

What are the possible causes for no ignition?

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  • Ken Bledsoe May 11, 2010

    Faulty ignitor
    Faulty circuit board
    Faulty pressure switch
    Faulty Gas valve
    Faulty Thermostat
    Faulty transformer

    you get the idea there are a few things that can cause the problem. As the process of lighting the burners have to be satisfied for a safe ignition.


  • Perry Putnam
    Perry Putnam May 11, 2010

    what kind of igniter? Hot surface(glow coil) or spark? Explain step by step what it does.

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  • 462 Answers

Dont forget faulty ground too. But by now I bet hes got this going.

Posted on Mar 30, 2009

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