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Carrier 58MXA040F14112 Defrost Sensor Board
The defrost sensor control board is jobbed with determining when to begin the defrost cycle which may be necessary to keep the outdoor unit free from frost build-up. The control board is relayed information from a sensor located near the condenser to make the decision on when to begin.
Important signs your outdoor defrost sensor board is going out
- The main board may issue an error signal if the defrost board goes out
- Your HVAC system will not run due to frost blocking the fins on the outside unit
- The defrost feature has not run for quite some time even though there is a lot of frost on the unit
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