OEM Carrier Defrost Control Board HK32EA003 for Model PH3GPAA60000AA

This is the factory OEM defrost control board (part number HK32EA003) for the Carrier PH3GPAA60000AA packaged heat pump. The defrost control board is the decision-making center of your heat pump's defrost system — it monitors outdoor coil temperature and ambient conditions, then initiates and terminates timed defrost cycles to prevent ice buildup on the outdoor coil. When this board fails, symptoms include the outdoor coil freezing solid, the system failing to enter a defrost cycle, erratic short-cycling, or the unit locking out on a fault code. Replacing it with the correct OEM part restores factory-programmed defrost logic and timing intervals.

• Part Number: HK32EA003 | Also references CEBD430433-08A, CEPL130433-01, CES0130076-00 — confirm your board's part number before ordering.
• OEM vs Generic: This is a genuine Carrier OEM board with factory-calibrated defrost timing (30/60/90/120-minute selectable intervals) and a 5-minute anti-short-cycle delay. Aftermarket boards may lack exact timing tolerances, risking coil icing or compressor damage over time.
• Install Difficulty: 3/5 — Requires shutting down system power at the disconnect and breaker before beginning. Tools needed: Phillips and flat-head screwdrivers, needle-nose pliers, phone/camera to photograph wiring harness before disconnection. Note the DIP switch positions on the old board before removal.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH3GPAA60000AA packaged heat pump unit. Cross-references OEM part numbers HK32EA003, CEBD430433-08A, and CEPL130433-01. Always verify your existing board's part number against the unit data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.