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This OEM defrost control board (part number HK32EA001) is the factory-specified replacement for the Carrier PH13NR060000ACAA heat pump. The defrost control board manages the automatic defrost cycle, monitoring outdoor coil temperature and time intervals to prevent ice buildup on the heat pump's outdoor unit. When this board fails, symptoms typically include the outdoor coil freezing solid, the unit failing to enter defrost mode, erratic short-cycling, or complete system lockout — all of which severely reduce heating efficiency and can lead to compressor damage if left unaddressed.
Compatibility: Designed specifically for the Carrier PH13NR060000ACAA heat pump. Always verify the OEM part number printed on your existing board before ordering to confirm a direct match. Our technical team is available to verify fitment — contact us before you order if you have any questions. In stock and ready to ship today.