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Carrier 38YSA042 Defrost Sensor Board
The defrost sensor board instructs the system to activate the defrost cycle which aids to remove frost build-up that may accumulate. The defrost board looks to a temperature sensor which is near the condenser somewhere, in order to agree when the defrost cycle should begin.
Some warnings of an ailing AC defrost sensor board
- The main circuit board could signify an error of some type produced by a bad defrost control board
- Defrosting never starts especially when there is a rather large amount of frost in the way
- Your HVAC system will end up not running because of the amount of frost on the outdoor unit
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If you are going to be buying or purchasing a new Carrier 38YSA042 replacement part, do your due diligence and make sure of the model number and also make a visual comparison in order to be sure the correct defrost sensor board is being ordered. HVAC pros could be quite expensive to hire so it is best to shop around to find a good deal if money is of great importance to you.
Feel free to download your manual for help.
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