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Lennox 13HPD-024 Defrost Sensor Board
The defrost sensor control board will begin the defrost sequence which assists to keep your outdoor unit from plugging up. The defrost board is relayed information from a specific sensor which is near the condenser somewhere, in order to make the decision on when the defrost cycle should begin.
Indications of an ineffective Lennox defrost sensor board
- The main control board might issue an error signal produced by a failing defrost board
- Defrost session refuses to initiate despite that there is a large amount frost that makes the unit run like crap
- The HVAC system could not run at all because of lack of airflow through the outdoor unit
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