Question about Carrier 38CKC042 Air Conditioner

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I just had new vents run in the basement and even though they are closed, it will not cool the upstairs. It is 80 degrees upstairs. What is the problem?

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  • gerald darling
    gerald darling May 11, 2010

    where it the thermostat located

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First when you add new vents make sure your unit is big enough to handle the extra load. If you have shut off your vents to the basement. and it does not cool you may have AC problem. Sounds like you need to get it checked. Ask for a free estimate before you commit anything. Remember if they add gas you have a leak and it should be found. Rus When your ac does not cool properly check filters float switch in unit. Breaker on outside unit. Take a thermometer and take a reading from the reurn to the closest vent you should have between 17 and 21 degrees diference across the coil. If you have electric heat or heat pump you may need have a heat sequencer stuckmkeeping part of the heat on during cool.

Posted on Jun 26, 2009

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