OEM Carrier Fan Blower Control Board HK61EA010 for Model FX4CNB042000AAAA

This is the factory OEM replacement fan blower control board (part number HK61EA010) for the Carrier FX4CNB042000AAAA air handler. The control board serves as the central command module for the blower assembly, orchestrating fan speed sequencing, cooling and heating operation, and communicating with the thermostat and other system components. When this board fails, you may experience symptoms such as the blower not starting, incorrect fan speeds, failure to respond to thermostat calls, erratic on/off cycling, or a complete loss of heating and cooling airflow distribution throughout the home.

• Specs: OEM Part Number HK61EA010 | Compatible with Carrier FX4CNB042000AAAA air handler | Factory-programmed multi-speed blower control | 24V control circuit interface | Replaces failed or damaged IFC boards with exact fit and function
• OEM vs Generic: This is a genuine Carrier OEM board, factory-programmed to exact specifications for the FX4CNB042000AAAA. Generic aftermarket boards may lack proper speed taps, fault code support, or precise timing sequences — leading to premature failures, voided warranties, or comfort issues.
• Install Difficulty: 3/5 — Requires disconnecting 24V and line-voltage wiring harnesses. Always shut off power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, phone or camera to photograph all wiring connections before removal. We recommend professional installation if you are unfamiliar with air handler wiring.
• Warranty: Backed by Carrier's 1-year OEM parts warranty. Orders placed before cutoff ship same business day from our stocked warehouse — no waiting on backorders.

Compatibility: This board is engineered specifically for the Carrier FX4CNB042000AAAA fan coil air handler. Always cross-reference the OEM part number HK61EA010 printed on your existing board before ordering to confirm an exact match. If you have any questions about fitment, our HVAC parts specialists are available to verify compatibility before you purchase. Order today and get your system back up and running fast — in-stock and ships same day.