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Carrier 38YRA024 Defrost Sensor Board
The defrost control board controls when to launch the defrost sequence which assists to get rid of the frost that collects on the outdoor unit. The defrost board depends on a temperature sensor which is near the condenser somewhere, in order to ascertain when the defrost cycle should begin.
Key clues of a bad outdoor defrost sensor board
- Defrost session refuses to initiate despite the fact that there is quite a bit frost on the outdoor unit
- Your main control board may show an error number produced by a bad defrost control board
- The AC may not run for the simple fact of the frost issue
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