IMAGE COMING SOON
Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
This genuine OEM Carrier control board is the direct replacement circuit board for your Carrier FB4BNF030000AAAA fan coil. The board is the brain of your air handler, managing blower operation, fan speed sequencing, safety interlocks, and communication with your thermostat. Symptoms of a failed board include a blower that won't start, intermittent operation, error codes, or a system that runs continuously. This factory part is pre-programmed to your unit's specifications, eliminating guesswork and ensuring proper timing and relay logic. Installation is a moderate skill-level repair — disconnect power, photograph the existing wiring, transfer the labeled connectors to the matching terminals, and secure the board to its standoffs, roughly 30-45 minutes. Always cut power at the breaker first and verify connections before restoring power. Using the authentic Carrier component protects your equipment warranty and avoids the compatibility issues common with universal boards. We keep this part in stock and ship same-day on every order placed before 3PM CST, getting your heating and cooling back online without delay.
This part is compatible with Carrier model FB4BNF030000AAAA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.