OEM Carrier Defrost Control Board HK32EA001 for Model PH4ANG036000BCAA

This is the genuine OEM factory replacement defrost control board (part number HK32EA001) for the Carrier PH4ANG036000BCAA heat pump split system. The defrost control board manages the automatic defrost cycle, commanding the reversing valve to switch modes and energizing the defrost relay at precise intervals to eliminate frost and ice buildup on the outdoor coil. When this board fails, symptoms include the outdoor unit freezing solid, the system failing to switch from cooling to heating mode, or the unit locking out entirely after a failed defrost sequence. Ignoring a failed defrost board leads to compressor damage and costly refrigerant issues.

• OEM Part Number: HK32EA001 | Also references: CEPL130524-01, CEBD430524-06A | 24V control circuit | 5A | Single-phase
• OEM vs Generic: This is a genuine Carrier factory-authorized part, manufactured to exact board-level tolerances. Generic or aftermarket defrost boards often use off-spec relays and timing components that result in premature failure or incorrect defrost intervals — risking compressor damage.
• Install Difficulty: 3/5 — Disconnect power at the disconnect box and wait 5 minutes before handling. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph wiring before removal. Transfer wiring harness connectors one at a time to the new board to avoid miswiring. No soldering required.
• Warranty: 1-year OEM manufacturer warranty. In-stock — ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed as a direct OEM replacement for Carrier model PH4ANG036000BCAA heat pump condensing units. Cross-references include board numbers CEPL130524-01 and CEBD430524-06A. Always verify your existing board's part number against HK32EA001 before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us before placing your order.