OEM Carrier Defrost Control Board HK32EA001 for Model PH10JA03600GAGAA

This is the factory OEM defrost control board (part number HK32EA001) designed as the direct replacement for the Carrier PH10JA03600GAGAA heat pump. The defrost control board monitors outdoor coil conditions and manages timed or demand-initiated defrost cycles, reversing refrigerant flow to melt ice buildup on the outdoor coil. When this board fails, you'll typically experience a continuously iced outdoor coil, the unit stuck in defrost mode, failure to enter or exit defrost, or a complete system lockout — all of which result in lost heating capacity and potential compressor damage if left unaddressed.

• Specs: 24V control voltage | 5A rated | Single-phase | Board ID: CEPL130524-01 | Dimensions approx. 6" × 4" | Direct plug-in harness replacement — no wiring modifications required
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part built to exact OEM tolerances. Aftermarket defrost boards frequently use off-spec timing components that cause premature or missed defrost cycles, accelerating compressor wear and reducing system efficiency.
• Install difficulty: 3/5 — Disconnect power at the breaker before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph wiring before removal. Transfer all wire harnesses one-at-a-time to avoid miswiring. Confirm defrost cycle initiates after reinstall by jumping the defrost test pins.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PH10JA03600GAGAA heat pump. Also fits select 38YCG and related Carrier/Bryant heat pump platforms sharing the HK32EA001 board specification — verify your unit's data plate and existing board part number before ordering. Our HVAC parts specialists are available to confirm fitment at no charge before you buy.