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Carrier 58STA070 Defrost Sensor Board
The defrost sensor control board instructs the system to activate the defrost sequence which may be necessary to remove frost build-up that may accumulate. The defrost sensor board looks to a specific sensor which is near the condenser somewhere, in order to verify when the defrost cycle should begin.
What are the signs that the Carrier defrost sensor board is almost going bad?
- The HVAC system control board might issue an error number produced when the defrost board is bad
- Unit defrost session never runs despite the fact that there is quite a bit frost on the external unit
- Air conditioning may stop operating due to too much frost
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