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Toshiba RAV-SP300CT-UL Defrost Sensor Board
The defrost control board determines when to initiate the defrosting phase if necessary, to keep your outdoor unit from plugging up. It relies on a sensor that can be found near the condenser, in order to determine when the defrost cycle should begin.
Simple signals the defrost sensor board should need replacing
- The HVAC system control board could display an alphanumeric error code referring to a failing defrost control board
- The AC may cease to operate because of lack of airflow through the outdoor unit
- Defrost mode never kicks in even when there is a large quantity of frost that needs to be removed
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