OEM Carrier Control Board CESO130007 for Air Handler Model FK4BNF003020AAAA

This is the factory OEM integrated control board (part number CESO130007), the direct replacement for the Carrier FK4BNF003020AAAA air handler. The control board serves as the central command module for your air handler — orchestrating blower motor operation, multi-speed fan control, communicating with the thermostat, and managing heating and cooling sequences. When this board fails, symptoms typically include the system not responding to thermostat calls, the blower running continuously or not at all, erratic fan speeds, or a completely unresponsive unit with no status LED activity.

• Specs: OEM Part No. CESO130007 | Fits Carrier FK4BNF003020AAAA air handler | 24V control circuit interface | Multi-speed blower control | Factory-programmed logic — plug-and-play replacement
• OEM vs Generic: This is the genuine Carrier OEM board, pre-programmed with the exact firmware and relay configuration required for your FK4BNF003020AAAA unit. Aftermarket boards may require manual DIP switch configuration and can introduce compatibility issues with communicating thermostats and variable-speed motors.
• Install Difficulty: 3/5 — Disconnect power at the breaker and verify zero voltage before handling. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, smartphone for wiring photos. Label every wire and connector before removal. Follow the wiring diagram printed on the air handler door panel for reference during reinstallation.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our stocked warehouse.

Compatibility: Designed specifically for the Carrier FK4BNF003020AAAA fan coil air handler. Always verify your existing board's part number against CESO130007 and confirm your model data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you buy if you have any questions. Order today and your part ships the same business day.