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International Comfort Products NHP224AKA1 Defrost Sensor Board
The defrost control board instructs the system to activate the defrosting phase if necessary, to keep your outdoor unit from plugging up. It is influenced by a defrost sensor which is near the condenser somewhere, in order to ascertain when to initiate the defrosting cycle.
Major indications of an inadequate defrost sensor board
- The whole system may cease to function because of frost blocking the fins on the outside unit
- The control board could signify an error of some type when encountering a problem
- The defrost sequence never initiates despite that there is a large amount frost on the outdoor unit
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