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Carrier 58STA13510022 Defrost Sensor Board
The defrost sensor board instructs the outdoor unit to begin the defrost cycle which may be necessary to remove frost build-up that may accumulate. The control board relies on a defrost sensor that can be found near the condenser, in order to make the decision on when to begin.
Some clues the defrost sensor board is in need of replacing
- Air conditioning may cease to operate due to the fact of frost blocking the airflow outside
- The main board might give out an error signal produced by a bad defrost control board
- Defrosting never runs despite that there is a large amount frost that makes the unit run like crap
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