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

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Furnace runs but won't ignite.

Carrier furnace code 12 rw closed. how do i fix it.

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Error code 12 is blower on after power up. Meaning: after you turn on power to the furnace for aprox. 60-90 seconds the blower will run. The blower should then shut down and the furnace should go through the start up process, providing that the thermostat is set for and calling for heat. If the furnace fails to start after blower shut down there should be a new fault/error code. However if the blower continues to run longer then 90 seconds and continues with the same fault code more then likely the circuit board is bad. Please let me know if this was helpful and give me a rating. Good luck.

Posted on Feb 10, 2009

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