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International Comfort Products NTVM125KNA1 Defrost Sensor Board
The defrost sensor board determines when to initiate an important defrosting cycle in order to keep your outdoor unit from plugging up. The defrost board is influenced by a defrost sensor located somewhere by the condenser to make the decision on when the defrost cycle should begin.
General warnings of a declining defrost board
- Self defrost sequence does not begin especially when there is a rather large amount of frost that has built up
- The HVAC system control board could display an error number produced by too much frost
- The AC may not run due in part to the safety features installed
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