OEM Carrier Defrost Control Board HK32EA001 for Model PH13NR02400GAHAA

This is the factory-original OEM defrost control board (part number HK32EA001) for the Carrier PH13NR02400GAHAA heat pump. The defrost control board monitors outdoor coil temperature and elapsed run time to initiate and terminate the defrost cycle — a critical function in heat pump operation. When this board fails, your system may become stuck in heating or cooling mode, fail to defrost the outdoor coil (leading to ice buildup), or exhibit erratic reversing valve behavior that causes the unit to short-cycle or deliver inconsistent temperatures indoors.

• Specs: 24V control voltage | 5A | Single-phase | PCB model CEPL130524-01 | Cross-references: CEBD430524-06A, 151922 | Dimensions approx. 6" L × 4" W
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part (FAP). OEM boards are factory-calibrated to the exact defrost timing logic and sensor thresholds required by the PH13NR02400GAHAA. Aftermarket boards may use different timing intervals, shortening compressor life and voiding manufacturer warranties.
• Install Difficulty: 3/5 — Requires shutting off power at the disconnect and breaker before opening the control panel. Photograph all wiring harness connections before removal. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, and a multimeter to verify 24V signal at the board terminals post-install.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PH13NR02400GAHAA heat pump split system. Also fits select Bryant and Payne heat pump models sharing the same board specification — verify your OEM part number on the data plate or existing board before ordering. Our HVAC parts specialists are available to confirm fitment before you buy.