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Carrier 58STA04510008 Defrost Sensor Board
The defrost control board instructs the outdoor unit to begin the defrost cycle which may be necessary to keep the outdoor unit free from frost build-up. The board relies on a defrost sensor located in the outdoor unit to ascertain when to begin.
Major signs of a faulty Carrier defrost sensor board
- Your main control board might give out an error of some type if the defrost control board fails
- AC and heating system could not operate for the simple fact of the fact that there is too much frost
- The defrost sequence has not run for a while even when there is a large quantity of frost that makes the unit run like crap
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