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My cooper line outside on my air conditioner keeps freezing over causing my ac to blow warm air instead of cold air

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The evaporator coil that is low pressure and low temperature needs an adequate supply of heat to absorb from air passing over the fins or a thin dusting of frost will begin to form further insulating the coil from the passing air and causing more ice to form. First you have to get rid of all the ice by allowing the coil to thaw you can use a heat gun or hairdryer or lamp to speed the thawing but the fins and copper tubing are thin and easily damaged so don't use tools on the coil to remove ice. After thawed the coil needs to be cleaned with an indoor evaporator cleaner ( I also use a small shopvac and nylon brush) Then be sure that the filter is clean and the blower is functioning properly then if the suction line is still frosting you will have to verify that the size of the outdoor section is not over sized in relation to the evaporator coil and that the system is charged to meet the compressors manufactures specifications.

Posted on Jul 21, 2008

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1 Answer

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The lines on my air conditioner keep freezing and its not getting cold but the compressor keeps coming on


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1 Answer

Ac BLOWING HOT AIR INSTEAD OF COLD. All of a sudden my AC started blowing hot air instead of cold. It is set on cool.


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Not sure which model you have but i would check your indoor and outdoor temperature sensors  and also it could be your overload kickin the compressor off

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