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International Comfort Products PH5536AKA1 Defrost Sensor Board
The defrost sensor board initiates an important defrosting cycle in order to get rid of the frost that collects on the outdoor unit. The defrost board is influenced by a sensor which is near the condenser somewhere, in order to determine when to begin.
Major clues the AC defrost sensor board should be replaced
- Air conditioning may not operate for the simple fact of frost blocking the airflow outside
- Self defrost sequence will not kick in even though there is a large amount of frost on the external unit
- The HVAC system control board could throw an error code referring to a failing defrost control board
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