OEM Carrier Defrost Control Board HK32EA001 for Model PH12NA01800GADAA

This is the genuine OEM Carrier defrost control board (part number HK32EA001), factory-specified for the Carrier PH12NA01800GADAA heat pump. The defrost control board monitors outdoor coil temperature and elapsed run time, initiating and terminating defrost cycles to prevent ice accumulation on the outdoor coil. When this board fails, symptoms typically include a continuously iced-over outdoor coil, a heat pump stuck in defrost mode, loss of heating capacity in cold weather, or a complete system lockout with no reversing valve response.

• Specs: OEM Part # HK32EA001 | Board ID: CEPL130524-01 | 24V control voltage | 5A rated | Compatible board dimensions approx. 6" × 4" | Single-phase
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket substitute. OEM boards use factory-calibrated defrost timing logic and relay ratings precisely matched to your unit, preventing premature compressor wear and erratic defrost cycles that off-brand boards are known to cause.
• Install Difficulty: 3/5 — Disconnect power at the breaker and verify zero voltage before handling. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, zip ties, multimeter. Photograph all wiring harness connections before disconnecting. Defrost boards contain multiple plug-in connectors — label each before removal.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered and factory-matched for the Carrier PH12NA01800GADAA heat pump. Also referenced under board sub-part numbers CEPL130524-01 and CEBD430524-06A. Always verify your existing board's part number against the data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.