OEM Carrier Defrost Control Board HK32EA005 for Model TCHC2550HECMRAH600

This OEM defrost control board (part number HK32EA005) is the factory-specified replacement for the Carrier TCHC2550HECMRAH600 heat pump system. The defrost control board monitors time, temperature, and pressure inputs to intelligently initiate and terminate the defrost cycle, preventing ice accumulation on the outdoor coil. When this board fails, you'll typically experience continuous ice buildup on the outdoor unit, a system stuck in defrost mode, failure to complete the defrost cycle, or a unit that short-cycles and locks out entirely — all of which severely degrade heating efficiency and can lead to compressor damage if left unaddressed.

• Part Number: HK32EA005 | OEM Carrier Factory Authorized Part | Also referenced as CEPL130856-01-R and CEBD430856-06-RA
• OEM vs Generic: This is a genuine Carrier OEM board — not an aftermarket substitute. OEM boards use factory-calibrated defrost algorithms and certified relay ratings. Aftermarket boards can introduce erratic defrost timing, voided warranties, and premature system failures.
• Install Difficulty: 3/5 — Involves disconnecting 24V control wiring and line-voltage terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, phone/camera to photograph wiring before removal. Turn off all power at the disconnect and breaker before servicing. Professional installation recommended.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier TCHC2550HECMRAH600 heat pump. Verify your existing board's part number against HK32EA005 before ordering — cross-reference numbers CEPL130856-01-R and CEBD430856-06-RA also confirm fitment. Not sure if this is the right part? Our HVAC specialists verify fitment before every order — contact us today. In stock and ready to ship.