OEM Carrier Defrost Control Board HK32EA001 for Model PH10PA04800GACAA

This is the genuine OEM defrost control board (part number HK32EA001), the factory-specified replacement for the Carrier PH10PA04800GACAA heat pump. The defrost control board monitors outdoor coil conditions and initiates timed defrost cycles to melt accumulated frost and ice from the evaporator coil. When this board fails, the heat pump will no longer enter defrost mode — leading to progressive coil icing, restricted airflow, reduced heating capacity, and eventually compressor damage if left uncorrected. Common symptoms include a heavily iced outdoor unit, the system blowing cold air in heating mode, or the unit running continuously without recovering to setpoint.

• OEM Part Number: HK32EA001 | Also supersedes: HK32EA007, CEPL130524-01, CEBD430524-04B, 1173636, 1177927 | Factory-authorized Carrier replacement component
• OEM vs Generic: Genuine OEM boards are calibrated to factory defrost timing intervals (30, 60, 90-minute selectable cycles). Aftermarket boards may use ±tolerance components that cause premature or missed defrost events, accelerating coil and compressor wear over time.
• Install Difficulty: 3/5 — Disconnect all power before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera to photograph wiring before removal. Note defrost time selector switch position before swapping boards. Exercise caution around capacitor terminals in the control compartment.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH10PA04800GACAA heat pump. Cross-references with Bryant and Payne heat pump models using the same board. Always verify your existing board's part number against your unit's wiring diagram before ordering. Our parts specialists are available to confirm fitment — call or chat before you order.