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International Comfort Products H9MPD100J20A1 Defrost Sensor Board
The defrost control board controls if and when to commence the defrost cycle which may be needed in order to defrost your outdoor unit. The defrost board is influenced by a temperature sensor located somewhere by the condenser to agree when to initiate the defrosting cycle.
Major warnings of a poorly performing AC defrost sensor board
- The HVAC system control board may show an alphanumeric error code produced by a bad defrost control board
- The system will stop operating because of the amount of frost on the outdoor unit
- The defrost sequence refuses to run despite the fact that there is quite a bit frost on the external unit
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