OEM Carrier Fan Blower Control Board Kit 322848-751 for Model FC4BNF048020AAAA

This OEM fan blower control board kit (part number 322848-751) is the factory-specified replacement for the Carrier FC4BNF048020AAAA fan coil air handler. The integrated fan coil control (IFC) board orchestrates every function of your air handler — managing blower motor speeds, communicating with the thermostat, sequencing heating and cooling stages, and triggering fault codes when a component falls out of spec. When this board fails, symptoms typically include a blower that won't start, incorrect fan speeds, intermittent lockouts, erratic thermostat response, or a completely unresponsive system with no heating or cooling output.

• Specs: OEM part number 322848-751 | Carrier Fan Blower Control Board Kit | Compatible with 4-ton FC4BNF048 series fan coil air handlers | Factory-matched control logic and terminal layout for direct drop-in replacement
• OEM vs Generic: This is a genuine Carrier OEM board, not an aftermarket substitute. Generic control boards frequently use off-spec relay ratings and firmware that mismatches factory blower profiles, leading to reduced efficiency, premature motor wear, and voided equipment warranties. OEM ensures exact staging behavior and fault code compatibility.
• Install difficulty: 3/5 — Disconnect power at the breaker before beginning. Tools needed: Phillips and flat-head screwdrivers, needle-nose pliers, phone or camera to photograph all wiring connections before removal. Transfer wiring harnesses one connector at a time to avoid misrouting. Reset thermostat after installation to clear any stored fault codes.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed by 3 PM local time ship same business day from our climate-controlled HVAC parts warehouse.

Compatibility: Designed specifically for the Carrier FC4BNF048020AAAA fan coil air handler. Verify your existing board's part number against 322848-751 before ordering. If your data plate or board label shows a different suffix or revision code, contact our fitment team — we verify compatibility on every order before it ships so you get the right part the first time.