heatpump ices .

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  #1  
Old 01-02-01, 05:56 PM
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After changing the thermal board and the defrost thermostat on the compressor the unit goes into the defrost mode but the unit does not defrost entirely. The unit ices up and does not heat the house. It is a 1987 Carrier Heatpump.
 
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  #2  
Old 01-02-01, 06:37 PM
fjrachel
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Have you had the freon checked? Reversing valve? outdoor metering device? Is it too cold and wet out for the system to completely defrost in the alotted time? What is the defrost timing setting? Does it heat the house above freezing temps? Do you have aux heat installed?
 
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