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This is the factory OEM defrost control board (part number HK32EA001) for the Carrier CH13NA06100GBABA heat pump condenser. The defrost control board manages the automatic defrost cycle, monitoring outdoor coil temperature and run times to determine when to initiate and terminate defrost. When this board fails, common symptoms include the outdoor unit freezing over completely, the system failing to enter or exit defrost mode, erratic short-cycling, or the unit locking out entirely — leaving you with no heating on the coldest days. Replacing with the correct OEM board ensures the defrost timing logic, sensor inputs, and relay outputs are calibrated exactly to factory specifications for your unit.
Compatibility: Designed as a direct OEM replacement for the Carrier CH13NA06100GBABA heat pump condenser. Always verify the part number on your existing board's label before ordering to confirm fitment. Our HVAC parts specialists are available to confirm compatibility before you purchase — order with confidence and get back to comfort fast.