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Carrier 58CVA11010020 Defrost Sensor Board
The defrost control board controls if and when to commence an important defrosting cycle which assists to keep the outdoor unit free from frost build-up. It relies on a sensor which is near the condenser somewhere, in order to agree when to begin.
Some clues the defrost sensor board needs replacing ASAP
- The main circuit board might issue a particular error code if the defrost board fails
- Air conditioning may not run due in part to the safety features installed
- Self defrost sequence never kicks in even though there is a large amount of frost on the unit
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