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International Comfort Products NTN3125KJA1 Defrost Sensor Board
The defrost sensor board controls when to launch the defrost sequence which helps to continue normal heating and cooling operations. The defrost board is relayed information from a specific sensor which is near the condenser somewhere, in order to make the decision on when to initiate the defrosting cycle.
Clues of a weak defrost sensor board
- Your system could not run due to too much frost
- The HVAC system control board might give out an alphanumeric error code referring to a bad defrost board
- Defrost session never runs even though there is a large amount of frost that needs to be removed
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