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International Comfort Products FBF125J20A3 Defrost Sensor Board
The defrost sensor control board is jobbed with determining when to begin the defrost cycle if necessary, to continue normal heating and cooling operations. The defrost board is influenced by a defrost sensor located near the condenser to determine when the defrost cycle should begin.
Signs of an inadequate outdoor defrost sensor board
- The HVAC system control board could throw an error signal when the defrost board fails
- The system will not operate for the simple fact of the fact that there is too much frost
- Defrosting never kicks in despite the fact that there is a lot of frost in the way
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