OEM Carrier Fan Blower Control Board HK61EA006 for Model FX4BNF042000AAAA

This is the genuine OEM replacement fan blower control board (part number HK61EA006) designed specifically for the Carrier FX4BNF042000AAAA air handler. The control board serves as the central command hub for the blower assembly — managing fan speed sequencing, indoor blower motor operation, and communication with the thermostat and outdoor unit. When this board fails, you may experience symptoms including the blower not starting, the system going into lockout, erratic or continuous fan operation, or a complete loss of airflow even when the outdoor unit is running normally.

• Specs: OEM Part No. HK61EA006 | Compatible with 4-ton Carrier FX4BNF air handler series | 24V control circuit interface | Multi-speed blower control with integrated fault detection and LED diagnostic indicators
• OEM vs Generic: This factory-original board is programmed to exact Carrier specifications, ensuring correct blower ramp timing, fault code reporting, and motor protection logic. Aftermarket boards often lack proper timing calibration, which can cause premature motor wear or void system warranties.
• Install Difficulty: 3/5 — Requires disconnecting 120V and 24V wiring harnesses. Always disconnect power at the breaker before servicing. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, phone or camera to photograph all wiring connections before removal. Label all terminals prior to disconnecting.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Engineered as a direct drop-in replacement for the Carrier FX4BNF042000AAAA 4-ton air handler. Confirm your existing board's part number matches HK61EA006 before ordering. If you're unsure, our fitment team is available to verify compatibility using your unit's model and serial number — just reach out before you buy. In stock and ready to ship today.