OEM Carrier Fan Blower Control Board HK61EA010 for Model FC4DNF030000AAAA

This is the factory OEM fan blower control board (part number HK61EA010), the direct replacement for the Carrier FC4DNF030000AAAA air handler. The control board serves as the central command module for blower motor operation — managing fan speed selection, delay-on/off timing, and communication with the thermostat and system controls. When this board fails, common symptoms include the blower motor not starting, incorrect fan speeds, the system running continuously without shutting off, or a complete failure to respond to thermostat calls. In some cases, fault codes or diagnostic LED patterns on the board itself will indicate the failure point.

• Specs: OEM Part Number HK61EA010 | Compatible with Carrier FC4DNF030000AAAA air handler | Factory-matched control logic, relay ratings, and connector pinout | Includes integrated diagnostics LED for fault code readout
• OEM vs Generic: This is a genuine Carrier OEM board, manufactured to exact factory specifications. Aftermarket boards frequently feature mismatched relay ratings, incompatible firmware logic, or incorrect terminal layouts — leading to improper blower sequencing, voided equipment warranties, and premature failure.
• Install Difficulty: 3/5 — Requires disconnecting low-voltage thermostat wiring and line-voltage blower motor leads. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, phone or camera to photograph all wiring before disconnection. Always shut off power at the disconnect and breaker before servicing. If unfamiliar with air handler wiring, professional installation is recommended.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier FC4DNF030000AAAA air handler. Always verify your OEM part number printed on the existing control board before ordering to confirm fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you order — reach out before purchasing if you're unsure. Order today and get same-day shipping on all in-stock parts.