Carrier HK61EA002 Control Board

Professional-grade Carrier HK61EA002 control boards serve as the critical logic center for high-efficiency fan coil units and air handlers across Carrier, Bryant, and Payne product lines. As a direct OEM replacement part, this board is engineered to restore factory-spec blower management and timing sequences, effectively replacing legacy components including CESO130003-01, CES0130003-00, and LR40061. This HVAC control board integrates a sophisticated time delay relay (TDR) circuit, which maintains airflow post-cycle to maximize latent heat transfer and prevent coil freeze-ups. Designed for 240VAC applications, it manages multi-speed blower taps—specifically black (high), blue (medium), and red (low)—ensuring precise airflow optimization based on thermostat demand. For technicians performing HVAC troubleshooting, this board addresses common failures where the blower motor won't shut off or fails to energize. Built-in diagnostics and a 5-amp blade fuse provide essential protection for the 24V transformer circuit and downstream components, ensuring reliable HVAC performance in demanding residential and commercial environments.

• Direct OEM Compatibility: Engineered for seamless drop-in installation in FA4A and similar fan coil series, matching original mounting footprints and 12-pin Molex configurations.
• Integrated Blower Delay: Features a factory-set 90-second blower-off delay to enhance system efficiency and improve indoor air quality.
• Multi-Speed Management: Precise relay switching for PSC and compatible blower motors, supporting specific speed-tap logic for heating and cooling modes.
• Enhanced Circuit Protection: Includes an onboard, replaceable 5-amp fuse to safeguard the logic board and transformer against low-voltage shorts.

What are the signs that a Carrier HK61EA002 needs replacement?
Technicians typically look for a blower motor that runs continuously even when the thermostat is satisfied, or a complete failure of the fan to engage during a call for cooling. Verify 24V at the 'G' terminal; if signal is present but the load side of the relay is open, the board requires replacement.

Can I adjust the blower-off delay on this board?
The board comes with a standard 90-second delay. While some technicians may attempt to bypass this by cutting the JW1 jumper to allow immediate shut-off, it is generally recommended to maintain the factory delay to ensure all residual heat or cooling is distributed from the coil.

Is this board compatible with both Heat Pump and Electric Heat systems?
Yes, the HK61EA002 is designed to interface with Carrier fan coils utilized in both heat pump and straight electric heat configurations, managing the transition between various stage demands and fan speeds.

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.