OEM Carrier Defrost Control Board HK32EA001 for Model PH13NR036000AAAA

This is the genuine OEM Carrier defrost control board (part number HK32EA001), the factory-specified replacement for the Carrier PH13NR036000AAAA heat pump. The defrost control board monitors outdoor coil conditions and initiates the defrost cycle to prevent frost and ice accumulation on the evaporator coil. When this board fails, the outdoor unit may freeze over completely, the system may lock out on a fault code, or the heat pump may run in heating mode without ever entering a defrost cycle — causing severe efficiency loss and potential compressor damage from ice buildup.

• OEM Part Number: HK32EA001 | Also supersedes: HK32EA007, CEPL130524-01, CEBD430524-06A, 1173636, 1177927 | Factory Authorized Carrier Replacement Components Division part
• OEM vs Generic: This is a genuine Carrier factory board with original connectors and calibrated defrost timing logic. Generic boards often use imprecise defrost interval settings, leading to under- or over-defrosting and premature compressor failure.
• Install Difficulty: 3/5 — Disconnect power at the disconnect box before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter, phone or camera to photograph all wiring before removal. Note: If cross-referencing to HK32EA007, verify defrost time selector switch setting before reinstalling the panel.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model PH13NR036000AAAA heat pumps and other select Carrier, Bryant, and Payne heat pump models that use the HK32EA001 defrost control board. Always verify your unit's data plate and existing board part number before ordering. Our technical team is available to confirm fitment — contact us before you order.