OEM Carrier Integrated Furnace Control Board CESO110057-02 for Model GB1AAV042091ABJA

This OEM integrated furnace control board (IFC) is the factory-specified replacement for the Carrier GB1AAV042091ABJA gas furnace. The control board is the central brain of your heating system — it sequences the inducer motor, hot surface igniter, gas valve, and blower through every heating cycle. When it fails, symptoms typically include a furnace stuck in lockout, error codes flashing on the LED diagnostic light, erratic ignition attempts, or a complete loss of heat with no response from any component. Replacing the control board with the correct OEM part restores precise factory timing and fault-detection logic.

• Specs: OEM Part Number CESO110057-02 | Integrated Furnace Control (IFC) | 120V input | 24V control circuit output | Factory-matched diagnostic LED fault codes for GB1AAV042091ABJA
• OEM vs Generic: This OEM board is programmed with Carrier's exact ignition timing, blower delay, and safety lockout sequences. Aftermarket boards often use generalized timing that can cause nuisance lockouts, shortened heat exchanger life, or voided equipment warranties.
• Install difficulty: 3/5 — Disconnect power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, smartphone (to photograph all wiring harness connections before removal). Transfer wiring one connector at a time to avoid miswiring. Reset thermostat after install.
• Warranty: 1-year OEM factory warranty against defects. Orders placed by 3 PM local time ship same business day from our climate-controlled warehouse.

Compatibility: Engineered specifically for the Carrier GB1AAV042091ABJA gas furnace. Always confirm OEM part number CESO110057-02 matches the label on your existing board before ordering. If your board shows burn marks, cracked solder joints, or a burnt smell, this is your direct factory replacement. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork, no returns.