OEM Carrier Fan Blower Control Board HK61EA002 for Model FB4ASF048000AEAA

This is the genuine OEM fan blower control board (part number HK61EA002), factory-specified for the Carrier FB4ASF048000AEAA air handler. The integrated fan control (IFC) board serves as the brain of your air handler — managing blower motor speeds, coordinating heating and cooling demands from the thermostat, and executing timed fan-off delays after each cycle. When this board fails, you may experience a blower that won't start, a fan that runs continuously without calling for heat or cool, erratic multi-speed operation, or a complete system lockout with no response to thermostat signals. Replacing the control board with an exact OEM unit restores factory-programmed timing and motor protection logic that generic alternatives often lack.

• Specs: OEM Part Number HK61EA002 | Compatible with 4-ton FB4ASF048000AEAA air handler | 24V control circuit interface | Multi-speed blower motor outputs | Factory-programmed fan-off delay timing
• OEM vs Generic: This factory-original board preserves Carrier's exact fan-off delay intervals and blower speed sequencing. Generic boards may use approximated timing, leading to comfort inconsistencies, reduced dehumidification performance, and accelerated blower motor wear.
• Install Difficulty: 3/5 — Disconnect power at the breaker and verify zero voltage before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, phone or camera for photographing all wire harness positions prior to removal. Label every connector before disconnecting. A multimeter is recommended to confirm 24V control voltage is present after installation.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct drop-in replacement for the Carrier FB4ASF048000AEAA 4-ton air handler. Always verify the OEM part number HK61EA002 on your existing board's label before ordering to confirm fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you order — reach out before you buy.