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This is the factory OEM defrost control board (part number CESO110063-02) engineered specifically for the Carrier HC1CJX060000ABAA heat pump system. The defrost control board manages the automatic defrost cycle, monitoring outdoor coil temperature and time-initiated defrost intervals to prevent ice accumulation on the heat exchanger. When this board fails, symptoms include excessive ice buildup on the outdoor unit, the system failing to enter or exit defrost mode, erratic heat pump operation, or a complete system lockout in heating mode — leaving your home without heat during cold weather.
Compatibility: Designed as a direct OEM replacement for the Carrier HC1CJX060000ABAA 5-ton heat pump unit. Always verify your existing board's part number against CESO110063-02 before ordering. If you are unsure of fitment, our HVAC parts specialists are available to confirm compatibility using your model and serial number. Order with confidence — in-stock and ready to ship today.