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Lennox 13ACX-024 Defrost Sensor Board
The defrost control board is jobbed with determining when to begin the defrosting phase which helps to keep the outdoor unit free from frost build-up. The defrost board is influenced by a sensor which is near the condenser somewhere, in order to make the decision on when the defrost cycle should begin.
What to see if the AC defrost sensor board is almost going bad?
- Your system could end up not running because of frost blocking the airflow outside
- Defrost mode never initiates even though there is excessive frost built up
- The main control board may throw an error of some type if the defrost board goes out
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