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Carrier 58MXA080 Defrost Sensor Board
The defrost control board controls when to launch the defrost sequence which may be necessary to keep your outdoor unit from plugging up. The defrost board looks to a temperature sensor located somewhere by the condenser to agree when to begin.
Cues of a barely functioning defrost sensor board
- The HVAC system control board may issue a specific error code referring to a failing defrost control board
- Self defrost sequence never runs especially when there is a rather large amount of frost built up
- Your system could stop functioning at all because of the safety issue that the frost poses
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