OEM Carrier Fan Blower Control Board HK61EA002 for Model FB4ASX036000AEAA

This is the factory OEM fan blower control board (part number HK61EA002) for the Carrier FB4ASX036000AEAA air handler. The control board serves as the brain of the blower assembly, coordinating fan motor operation, blower speed staging, and communication with the thermostat and outdoor unit. When this board fails, common symptoms include the blower motor not running at all, erratic or continuous fan operation, incorrect airflow staging, or a complete system lockout with no response to thermostat calls.

• Specs: OEM Part Number HK61EA002 | Factory-matched control logic for Carrier FB4ASX036000AEAA air handler | Compatible with multi-speed blower motor configurations | 24V control circuit input | Includes integrated diagnostics and fault LED indicators
• OEM vs Generic: This is a genuine OEM Carrier board manufactured to exact factory specifications. Generic or aftermarket control boards may not replicate proprietary timing sequences, blower speed profiles, or fault-code logic — leading to reduced system efficiency, premature motor wear, or persistent error codes.
• Install Difficulty: 3/5 — Requires disconnecting 120V power at the breaker and discharging any residual voltage before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, smartphone or camera to document all wiring connections before removal. Label every wire harness prior to disconnecting. Not recommended for unlicensed DIY on systems still under warranty.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our climate-controlled warehouse.

Compatibility: Designed specifically for the Carrier FB4ASX036000AEAA fan coil air handler. Always verify the part number printed on your existing board before ordering, as similar Carrier air handler models may use different board revisions. If you need fitment confirmation, our HVAC parts specialists are available to verify compatibility before you purchase — ensuring the right part arrives the first time. Order now and your board ships today.