OEM Carrier Defrost Control Board HK32EA001 for Model PH4ANG042000BCAA

This is the genuine OEM Carrier defrost control board, part number HK32EA001, factory-specified for the Carrier PH4ANG042000BCAA heat pump. The defrost control board monitors outdoor coil conditions and initiates timed defrost cycles to prevent ice accumulation on the evaporator coil. When this board fails, the heat pump typically remains stuck in heating or cooling mode with frost building up on the outdoor coil, resulting in severely reduced efficiency, high-pressure lockouts, or complete system shutdown. Cross-reference part numbers: CEPL130524-01, CEBD430524-06A, 1173636, 1177927, 662442528544.

• Function & Specs: Timed defrost control board | Adjustable defrost intervals (30 / 60 / 90 min) | 24V control circuit | Compatible with R-410A heat pump systems | Replaces CEPL130524-01 and CEBD430524-06A
• OEM vs Generic: This genuine Carrier Factory Authorized Part meets exact tolerance and timing specifications. Aftermarket boards often use off-spec relay components and imprecise timing circuits, which can cause premature re-icing or erratic defrost cycling — shortening compressor life.
• Install Difficulty: 3/5 — Turn off power at the disconnect and breaker before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter, camera/phone to photograph wiring before disconnecting. Always verify defrost termination sensor and outdoor coil sensor continuity before replacing the board.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse in a static-proof bag.

Compatibility: Fits Carrier model PH4ANG042000BCAA and select Carrier, Bryant, and Payne heat pump platforms sharing the HK32EA001 board specification. Verify your existing board's part number on the label before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order.