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

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The printed circuit board keeps clicking.

When the furnace is turned on the signal from the printed circuit board that operates the pilot has a hard time getting to the pilot causing the pilot to be intermittent.

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  • Farley Redfield
    Farley Redfield May 11, 2010

    It is under a heading with a model number I don't recognize how old is this furnace, is it single speed?

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  • 462 Answers

It does have a pilot? Is it spark ignited? I suppose this is the clicking your talking about. try blowing the pilot area out with compressed air and blow all around the base of the pilot. Then retry it. see if the flame looks stronger after this too. If its still acting up you may have a ground that's not very good. try removing the burners and manifold and cleaning them and vacuum the heat exchanger out while apart. then while putting it back together look for anyplace that may have had a ground wire attached and is now gone.replace this and see if it improves .

Posted on Mar 12, 2009

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