OEM Carrier Defrost Control Board HK32EA003 for Model PH3GPAA48000AA

This OEM defrost control board (part number HK32EA003) is the factory-specified replacement for the Carrier PH3GPAA48000AA packaged heat pump. The defrost control board manages and sequences the unit's defrost cycles, monitoring outdoor coil temperature and run time to initiate defrost when ice accumulation is detected. When this board fails, common symptoms include the outdoor coil freezing solid, the unit locking out on a fault, failing to enter or exit defrost mode, or the system delivering inadequate heating during cold weather operation.

• OEM Part Number: HK32EA003 | Also cross-references CEBD430433-08A, CEPL130433-01, and CES0130076-00 legacy boards — confirm your existing board number before ordering.
• OEM vs Generic: This is a genuine OEM Carrier board manufactured to exact factory tolerances. Generic aftermarket boards may use off-spec timing logic and lower-grade PCB materials, risking premature failure and voided equipment warranties.
• 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 all wiring harness connections before removal. Note defrost termination jumper settings on the original board and replicate on the new board.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.

Compatibility: Designed for the Carrier PH3GPAA48000AA packaged heat pump unit. This board supersedes legacy defrost control part CES0130076-00 and is the current OEM-recommended replacement. Always verify your existing part number on the board label before ordering. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — order with confidence.