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International Comfort Products H9MPX080J16A2 Defrost Sensor Board
The defrost sensor board is jobbed with determining when to begin the defrosting phase which may be necessary to remove frost build-up that may accumulate. The board relies on a specific sensor located somewhere by the condenser to verify when to begin.
What are the signs that the defrost board is crapping out?
- Defrosting never begins even though there is quite a bit frost on the outdoor unit
- Your system could stop functioning due in part to the amount of frost on the outdoor unit
- The main control board might give out an error of some type if the defrost board goes out
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