OEM Carrier Defrost Control Board HK32EA001 for Model PH3ANA042000BAAA

This is the genuine OEM defrost control board (part number HK32EA001), the factory-specified replacement for the Carrier PH3ANA042000BAAA heat pump. The defrost control board monitors outdoor coil temperature and run time, initiating and terminating the defrost cycle to prevent frost and ice buildup on the heat exchanger. When this board fails, the most common symptoms include a heavily iced outdoor coil, the system never entering defrost mode, or the unit running in defrost continuously — all of which cause a dramatic loss of heating capacity and can lead to compressor damage if left unaddressed.

• OEM Part Number: HK32EA001 | Also cross-references: CEPL130524-01, CEBD430524-06A, 1173636, 1177927 | Factory Authorized Carrier Replacement Components Division part
• OEM vs Generic: Genuine OEM boards are manufactured to exact factory tolerances and preserve the unit's original efficiency ratings, certifications, and sound performance. Generic boards often deviate in timing sequences and relay specifications, risking compressor short-cycling and premature system failure.
• Install Difficulty: 3/5 — Disconnect power at the breaker before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter, camera/phone for wiring documentation. Label all wiring harnesses before disconnecting. Verify defrost thermostat and defrost sensor function before replacing the board.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse. Packed with anti-static protection to prevent board damage in transit.

Compatibility: Designed for the Carrier PH3ANA042000BAAA heat pump and other select Carrier, Bryant, and Payne heat pump models using the HK32EA001 defrost board. Always verify your unit's data plate and existing board part number before ordering. Our team is available to confirm fitment — contact us before you buy.