OEM Carrier Fan Blower Control Board HK61EA006 for Model FX4CSX048000AAAA

This is the factory OEM replacement fan blower control board (part number HK61EA006) for the Carrier FX4CSX048000AAAA air handler. The integrated fan control (IFC) board is the brain of your air handler — it manages blower motor speed sequencing, indoor fan operation, auxiliary heat staging, and communicates with the thermostat to coordinate heating and cooling cycles. When this board fails, common symptoms include the blower not turning on, the system running continuously without responding to thermostat commands, error fault codes on the thermostat display, or the unit going into safety lockout with no apparent cause.

• Specs: OEM part number HK61EA006 | Designed for Carrier FX4CSX048000AAAA 4-ton air handler | Factory-matched control logic for multi-speed ECM blower sequencing | 24V control circuit compatible | Includes onboard diagnostic LED indicator
• OEM vs Generic: This is a genuine Carrier OEM board — not an aftermarket clone. OEM boards are pre-programmed with the exact timing delays, fault detection thresholds, and motor speed profiles required for the FX4CSX048000AAAA. Generic boards may lack proper delay-on-make/break timing, leading to premature heat exchanger stress or comfort complaints.
• Install Difficulty: 3/5 — Requires comfort with low-voltage wiring. Power down the unit and verify 0V at the board before touching any terminals. Tools needed: flat-head and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter, and camera or phone to photograph all wiring connections before removal. Label every wire lead during disassembly.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our climate-controlled warehouse.

Compatibility: Engineered specifically for the Carrier FX4CSX048000AAAA 4-ton multi-speed air handler. Always cross-reference the part number printed on your existing board before ordering to confirm an exact match. If you have questions about fitment, our HVAC parts specialists verify compatibility before you buy — no guesswork required. Order today and get same-day shipping on all in-stock control boards.