OEM Carrier Defrost Control Board HK32EA001 for Model PH15NB03600GBBAA

This is the genuine OEM Carrier defrost control board (part number HK32EA001), the factory-specified replacement for the Carrier PH15NB03600GBBAA heat pump. The defrost control board governs when and how long the unit runs its defrost cycle — monitoring outdoor coil temperature and time intervals to prevent ice accumulation on the heat exchanger. When this board fails, the heat pump will typically stop initiating defrost cycles, leading to progressive ice buildup on the outdoor coil, reduced heating capacity, compressor overload, and in some cases incorrect reversing valve operation that leaves the system stuck in heating or cooling mode.

• Specs: 24V control voltage | Board model CEPL130524-01 | Single-phase | Dimensions approx. 6" L × 4" W | Compatible cross-references: CEBD430524-06A, 151922
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket copy. OEM boards are programmed with exact defrost timing intervals and safety lockout logic matched to your unit. Generic boards risk mistimed defrost cycles, compressor short-cycling, and voided equipment warranties.
• Install difficulty: 3/5 — Disconnect power at the breaker and verify zero voltage before opening the control panel. Photograph all wiring harness connections before removal. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Test defrost thermostat and outdoor coil sensor before replacing the board to rule out upstream faults.
• Warranty: 1-year OEM factory warranty. In stock — ships same business day from our warehouse.

Compatibility: Fits Carrier model PH15NB03600GBBAA heat pump split systems. Also fits select Bryant and Payne heat pump models sharing the HK32EA001 board specification. Always verify your unit's data plate and existing board part number before ordering. Our fitment team is available to confirm compatibility before you buy.