OEM Carrier Defrost Control Board HK32EA001 for Model PH13NR036000AEAA

This genuine OEM defrost control board (part number HK32EA001) is the factory-specified replacement for the Carrier PH13NR036000AEAA heat pump. The defrost control board monitors outdoor coil conditions and governs when the system enters and exits its defrost cycle — a critical function in heat pump operation. When this board fails, the outdoor coil can ice over completely, severely reducing heating capacity, causing the system to trip on high-pressure lockout, or preventing the unit from completing a defrost cycle altogether. Common symptoms include a heavily frosted or fully frozen outdoor coil, the unit running continuously in heating mode without relief, or fault codes related to defrost timing on your thermostat or system diagnostics.

• Specs: 24V control voltage | 5A rated | Board ID: CEPL130524-01 / CEBD430524-06A | Compatible relay: Potter & Brumfield T9AS2D22-24 | Single-phase application | Dimensions approx. 6" × 4"
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM boards use factory-matched relay timing and threshold logic for the PH13NR036000AEAA — aftermarket alternatives may use generalized defrost intervals that shorten compressor life or cause nuisance lockouts.
• Install difficulty: 3/5 — Disconnect power at both the breaker and disconnect box before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera (photograph all wiring before removal). Swap connectors one-at-a-time to avoid miswiring. A multimeter is recommended to verify 24V control voltage before and after installation.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH13NR036000AEAA heat pump (3-ton, R-410A). Cross-reference part numbers: CEPL130524-01, CEBD430524-06A, 151922. Also fits select Bryant and Payne heat pump models — verify your unit's data plate and existing board markings before ordering. Our fitment team is available to confirm compatibility prior to purchase.