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Carrier 39L Defrost Sensor Board
The defrost control board will determine when to initiate the defrosting phase which helps to defrost your outdoor unit. The defrost board relies on a sensor which is near the condenser somewhere, in order to decide when to begin.
Simple indications of a barely functioning defrost sensor board
- Your main control board may issue a specific error code if the defrost board fails
- The system will cease to function for the fact of lack of airflow through the outdoor unit
- Defrost session never runs despite that there is a large amount frost that needs to be removed
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Before buying or ordering, do your due diligence and double check the model number as well as make a visual inspection in order to be sure the right defrost sensor board is the one being purchased. Some pros may charge higher prices than others so you may want to keep a lookout locally to acquire the best rate if money is a concern.
Feel free to download your manual for help.
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