OEM Carrier Defrost Control Board CESO110063-02 for Model HC1BNX030000AAAA

This is the factory OEM defrost control board (part number CESO110063-02) for the Carrier HC1BNX030000AAAA heat pump. The defrost control board manages the timed defrost cycles that prevent ice buildup on the outdoor coil during heating operation. When this board fails, the outdoor unit may freeze over completely, causing loss of heating capacity, compressor damage, or the system entering a continuous lockout. Common failure symptoms include the outdoor coil icing up with no defrost cycle initiating, erratic defrost timing, or the reversing valve failing to switch during the defrost sequence.

• Specs: OEM part number CESO110063-02 | Factory-programmed defrost timing logic | 24V control circuit compatible | Direct drop-in replacement with no re-programming required
• OEM vs Generic: This OEM board ships pre-configured with Carrier's exact defrost interval and termination logic for the HC1BNX030000AAAA. Aftermarket boards frequently use generic timing that causes under- or over-defrosting, shortening compressor and coil life significantly.
• Install difficulty: 3/5 — Disconnect power at the breaker and verify zero voltage with a multimeter before proceeding. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera to photograph all wiring connections prior to removal. Transfer wiring terminal by terminal to avoid errors.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered before 3 PM local time.

Compatibility: Designed specifically for the Carrier HC1BNX030000AAAA 2.5-ton heat pump condenser. Always cross-reference your unit's data plate and existing board part number against CESO110063-02 before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you order if you have any questions. Orders placed today ship from our climate-controlled warehouse via expedited carrier.