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International Comfort Products MB20N2600A2 Defrost Sensor Board
The defrost control board is jobbed with determining when to begin the defrost sequence if necessary, to keep your outdoor unit from plugging up. The board depends on a temperature sensor located in the outdoor unit to make the decision on when to initiate the defrosting cycle.
Cues of a failing defrost board
- The system will not work for the fact of the fact that there is too much frost
- The defrost feature will not kick in even though there is a large amount of frost that makes the unit run like crap
- The main board could throw an alphanumeric error code referring to a bad defrost board
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