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

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Urnace fan of some sort runs all the time - set on automatic

Our electric bills have been higher than if we actually heated with electric. 1900 square foot patio home (built 1997) electric bills running 250.00 gas bills 225. furnace fans (seems to be one on bottom of furnace and the other one seems to be blower fan--one or the other runs 98 percent of time. Have furnace serviced and checked twice a year Can't find manual. Please help.

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If you have it cleaned twice a year they should be able to find this problem. It is one of two thinkgs. There is a limit switch on the fan at the top (inducer) this may be weak and causing the inducer run frequently. The other is there is another limit switch it is a main limit on the fire wall it is also weak and that is why the main blower is running it is trying to cool that limit.

Posted on Feb 02, 2009

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