OEM Carrier Defrost Control Board HK32EA001 for Model PH4ANG024000BBAA

This is the genuine OEM factory-replacement defrost control board for the Carrier PH4ANG024000BBAA heat pump. The defrost control board continuously monitors outdoor coil conditions and initiates the defrost cycle to clear frost and ice accumulation from the evaporator coil. When this board fails, your heat pump may run continuously in heating mode while the outdoor coil ices over completely, or it may fail to recover from defrost — leading to reduced heating efficiency, compressor overload, and eventual system lockout. If you've ruled out the defrost thermostat and outdoor temperature sensor as the fault source, this board is the correct next replacement.

• OEM Part Number: HK32EA001 | Cross-references: CEPL130524-01, CEBD430524-06A, 1173636, 1177927 | Factory Authorized Carrier Replacement Components Division part
• OEM vs Generic: Factory OEM boards are manufactured to exact Carrier circuit tolerances, including precise 30/60/90-minute defrost timing intervals. Generic aftermarket boards frequently exhibit timing drift, connector mismatch, and premature relay failure — voiding your system warranty and risking compressor damage.
• Install Difficulty: 3/5 — Disconnect power at the breaker before servicing. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, smartphone (photograph all wiring before disconnecting). Label every wire lead. The board mounts in the control compartment of the outdoor unit. Allow 30–45 minutes for a careful swap.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH4ANG024000BBAA heat pump and other select Carrier, Bryant, and Payne heat pump models using the HK32EA001 board. Always verify your unit's existing board part number on the label before ordering. Need fitment confirmation? Our HVAC parts specialists are standing by — order with confidence and get back to comfort faster.