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Carrier Weather Maker 8000 wont start with error code 21

I have a Carrier Weather Maker 8000 that has refused to start this winter. On checking the error codes comes out to be 21 which states gas blockage. One of the suggestion was to shut off the heater and let it reset which has not helped. (Left it Off for the whole night but when started the next morning, it still did not start. The ignitor comes on but since gas fails to come, it glows for few seconds and then turns off. Any suggestion would be appreciated.

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  • Geevan Nov 04, 2008

    I checked again today and from what I can gather, the error code is 12 and not 21. The error code 12 translates to "blower on after power up" or "R-W Closed". I have no idea what all this means. Any help would be appreciated.

    Thanks

  • rlambl Dec 18, 2008

    what is a code 12 on carrier weather maker 8000 and how can i fix it

  • Frogger9602 Mar 30, 2009

    I have the same problem, code 12, AND my furnace is amking an awful loud clumking noise.

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boanhtgclg
  • 34 Answers

SOURCE: Gas not coming on Carrier Weather Maker 8000

either the gas valve is not opening or your not getting gas to the furnace.  also the gas valve won't open unless the draft motor comes on.  if the ignitor is trying to light, but there's no gas, it might be a bad gas valve. i would call your closest NATE certified contractor

Posted on Nov 17, 2008

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