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Lennox XP16-048 Defrost Sensor Board
The defrost control board commences the defrost cycle which actually helps to keep your outdoor unit from plugging up. The defrost board is relayed information from a defrost sensor which is near the condenser somewhere, in order to determine when the defrost cycle should begin.
Major signs poorly running AC defrost sensor board
- Unit defrost session never begins despite the fact that there is a lot of frost on the external unit
- Your HVAC system will not run due to the fact of lack of airflow through the outdoor unit
- The primary control board might issue an error signal referring to a failing defrost control board
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