OEM Carrier Defrost Control Board HK32EA008 for Model PH16NA02400GBBAA

This genuine OEM Carrier defrost control board (part number HK32EA008) is the factory-specified replacement for the Carrier PH16NA02400GBBAA heat pump. The defrost control board monitors outdoor coil temperature sensors and manages the automatic transition between normal heating mode and defrost mode — preventing dangerous ice accumulation on the outdoor coil that reduces efficiency and can lead to compressor damage. When this board fails, you'll typically see the outdoor unit frozen solid, the system unable to initiate a defrost cycle, or the unit locked out entirely in cold weather.

• Specs: OEM part number HK32EA008 | Replaces CEPL130433-01, CEBD430433-09A | Selectable defrost intervals: 30, 60, 90, and 120 minutes | Compatible board references: HK32EA003 (superseded)
• OEM vs Generic: This is a genuine Carrier factory part — not an aftermarket substitute. OEM boards ship pre-configured with factory timing logic and tested relay contacts, eliminating the calibration uncertainty and higher failure rates associated with third-party replacements.
• Install difficulty: 3/5 — Requires disconnecting 24V control wiring, outdoor temperature sensor leads, and defrost relay harness. Tools needed: nut driver set, needle-nose pliers, multimeter, and a phone or camera to photograph all wiring before disconnection. Always shut off power at the disconnect and breaker before starting.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PH16NA02400GBBAA heat pump system. Also fits select Bryant and Payne heat pump models sharing the same board platform — verify your existing part number against HK32EA008 or CEPL130433-01 before ordering. Questions about fitment? Our HVAC parts specialists verify compatibility before your order ships.