Question about Carrier 38CKC036 Air Conditioner

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Carrier gas pak ..

Only blower is working..will not shut heat is generated...for awhile I could turn off power at fuse box and unit would provide heat for several cycles...but not now

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  • Samuel Allen
    Samuel Allen May 11, 2010

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I had the same problem and the result was an $82 limit switch just needed to be replaced.

Posted on Jan 06, 2009


Carrier products fall into a fail safe mode when any of the various overtemp sensors open or fail. check all of the micro switches that are around the burners and if any are open then that is your reason for the indoor fan to run nonstop. now you have to look at what caused the sensor to trip open. usually over heating. possibly a bad capacitor on the motor or the motor itself . or it could be excessive gas pressure creating to much flame and heat. test the gas pressure with a manometor. you can pick one up for about 100 bucks or call the gas company and see if they will come check it for free. then test the burners by observing flame pattern and flame rise off burners. then check the heat exchanger with a carbon monoxide detector . you can pick one up for about three hundred dollars . or try to get a gas guy that has one to check it. you may very well wind up calling a pro cause a simple mistake and you can easily kill some one or burn down the house. messing with gas aint the best way to save a buck. good luck.

Posted on Oct 15, 2008

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1. check indoor wiring.
2 check selector switch.
3 heater not working.check heater eliment also.

Posted on Mar 28, 2008

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Posted on Jan 02, 2017

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