Carrier HK50AA051 Circuit Board

The Carrier HK50AA051 Circuit Board is a Factory Authorized Part specifically engineered for high-demand Carrier commercial HVAC systems, including packaged rooftop units (RTUs) and heat pump systems. This genuine OEM replacement control board serves as the central terminal board and wiring interface, managing critical 24V low voltage communication across your heating and cooling stages. Built with high-grade fiberboard and featuring a 30A amperage rating, it replaces legacy part numbers HK50AA049, CESO130003-01, and CEPL130904-02-R, ensuring a precise fit and direct electrical compatibility without field modifications.

For contractors servicing 48HCDA series units or comparable Bryant and Payne equipment, the HK50AA051 streamlines the wiring of conductors and accessories within the control box. Its layout includes clearly labeled terminals and configurable jumpers for heat pump detection and external controls, ensuring optimum system performance and reliable HVAC circuit board repair. Using this original equipment part maintains the integrity of the diagnostic sequence and protects against the low voltage shorts common in high-tonnage multi-stage systems.

• Universal Compatibility: Serves as a direct OEM replacement for Carrier, Bryant, and Payne rooftop and packaged units.
• Durable Construction: Heavy-duty fiberboard design rated for 24V operations and 30A maximum amperage.
• Streamlined Installation: Precision wiring interface with exact terminal alignments for faster field service.
• System Reliability: Engineered to meet original Carrier Corporation specifications for safe and efficient operation.
• Advanced Control: Supports terminal board integration for occupancy controls, remote shutdown, and heat pump logic.

• Will this board replace my older HK50AA049 model? Yes, the HK50AA051 is the official successor and direct replacement for the HK50AA049 and CESO130003 series.
• Is this board compatible with both gas and electric heat units? This terminal board is versatile and used across central furnace, heat pump, and packaged RTU configurations.
• Are the jumpers pre-configured? While factory-set for standard operation, you should verify jumper positions for specific features like remote shutdown or occupancy sensors.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.