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

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My Carrier furnace started making a very loud whirring noise. I shut it off, and after the burners went off, the noise went away (the blower was still going). I waited a few minutes and turned it back on. Once the burners started going, the loud noise came back but was intermittent. My dad listened over the phone and thought it was a belt slipping?? Any ideas? I'd appreciate any help as it's cold tonight and it's not possible to turn back on due to the nosie!!


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  • Anonymous Feb 07, 2009

    me too same problem

  • SheriAP Mar 02, 2009

    Before I could figure out where the noise was coming from, I thought an 18 wheeler was parked out front back firing. When I went to the front door, there were no trucks, so I realized it was upstairs in my attic. It woke my whole family up at 5 Am. My husband turned it off and we've called a repairman. We also smelled a burning smell, not gas, not electrical...Like the first time you turn on the heater for the first time during the fall.

  • dwkcool May 11, 2010

    First turn the fan to the on position ckeck for noise if not there turn back to auto and turn unit on and see if it is the combustion motor making the noise



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I had this same problem. I changed the filters and now it's quiet.

Posted on Feb 01, 2011

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My weathermaker started making a screeching noise and intermittantly would shut down, without blowing any heat. I found the sediment trap clogged and the induction motor was churning through the backed up condensation water. This slowed the motor down and the pressure switch would not stay closed. Unclogging the trap and hoses solved the problem. A bunch of water came out when I disconnected the collector box drain hose, along with gobs of sticky crud. Works great and is quiet now.

Posted on Jan 13, 2009


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