OEM Carrier Defrost Control Board HK32EA001 for Model PH12NA03600GABAA

This is the genuine OEM defrost control board (part number HK32EA001) factory-specified for the Carrier PH12NA03600GABAA heat pump. The defrost control board monitors outdoor coil conditions and governs the timing and execution of each defrost cycle — temporarily reversing refrigerant flow to shed ice buildup from the outdoor coil. When this board fails, your heat pump may remain stuck in cooling mode during winter, fail to initiate defrost, or accumulate heavy ice on the outdoor unit, leading to drastically reduced heating capacity and potential compressor damage.

• Specs: 24V control circuit | Board model CEPL130524-01 | Single-phase | 5A | Compatible relay: Potter & Brumfield T9AS2D22-24 | Dimensions approx. 6" × 4"
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket substitute. OEM boards are programmed with exact defrost timing algorithms for your unit. Generic boards may use off-spec defrost intervals, risking coil icing, compressor overload, or nuisance lockouts.
• Install difficulty: 3/5 — Disconnect power at the breaker before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph wiring harness before removal. Transfer all connectors to the new board one at a time to avoid miswiring. Verify defrost sensor connections are secure post-install.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH12NA03600GABAA heat pump. Also fits select Carrier, Bryant, and Payne heat pump models using the HK32EA001 defrost board — confirm your existing board's part number before ordering. Our parts specialists are available to verify fitment. Order now for same-day shipping and get your heat pump back in defrost mode fast.