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International Comfort Products PH5524AKA2 Defrost Sensor Board
The defrost sensor control board instructs the outdoor unit to begin the defrost sequence which actually helps to get rid of the frost that collects on the outdoor unit. The board is influenced by a defrost sensor which is near the condenser somewhere, in order to ascertain when to initiate the defrosting cycle.
Simple indications of a poorly performing AC defrost sensor board
- The HVAC system could stop operating due to frost blocking the fins on the outside unit
- Self defrost sequence never runs even though there is quite a bit frost that makes the unit run like crap
- The HVAC system control board could signify an error signal produced by a failing defrost board
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