OEM Carrier Defrost Control Board HK32EA001 for Model PH4ANG060000BBAA

This is the genuine OEM defrost control board (part number HK32EA001) factory-specified for the Carrier PH4ANG060000BBAA heat pump. The defrost control board monitors outdoor coil conditions and initiates timed defrost cycles to prevent frost and ice accumulation on the evaporator coil. When this board fails, the heat pump will often run continuously in heating mode without ever entering a defrost cycle — resulting in progressive ice buildup on the outdoor unit, sharply reduced efficiency, and eventual compressor damage from refrigerant flood-back. Common symptoms include a heavily iced outdoor coil, weak heating output, and the system never transitioning into defrost mode.

• 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 use factory-calibrated timing circuits and original-spec relay components (Potter & Brumfield T9AS2D22-24). Aftermarket boards often use off-spec timing that can under- or over-defrost, stressing the reversing valve and compressor. OEM is the only choice for warranty-covered systems.
• Install Difficulty: 3/5 — Requires disconnecting 24V control wiring harness and low-voltage sensor leads. Always power down at the disconnect and confirm with a multimeter before touching terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, phone camera to photograph wiring before removal. Note defrost time selection jumper setting before swapping boards.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse in original Carrier factory packaging.

Compatibility: Engineered for the Carrier PH4ANG060000BBAA packaged heat pump. This board is also used across select Carrier, Bryant, and Payne heat pump platforms — always confirm your unit's data plate part number matches HK32EA001 before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before you buy. Order now — in stock and ships today.