Carrier CESO110057-02 Control Board

The Carrier CESO110057-02 Control Board is the factory-authorized OEM furnace circuit board designed for single-stage heating systems in Carrier, Bryant, and Payne units. As a veteran-grade HVAC replacement part, this integrated furnace control (IFC) serves as the direct successor to multiple discontinued modules, including CESO110020, CESO110048, CESO110057, and HH84AA016. This updated revision features advanced LED diagnostic codes for rapid troubleshooting of pressure switch faults, limit trips, and flame sensing issues, where nominal current should measure between 4.0 to 6.0 microamps DC. The board manages ignition sequencing for 120V hot surface ignitors and coordinates PSC blower motor timing with DIP switch-adjustable off-delays. Compatibility includes popular 58-series furnaces like the 58WAV and 58PAV. For twinned applications, ensure the ST-2 jumper is removed to prevent nuisance lockouts. This furnace motherboard includes reverse polarity protection and secondary brownout voltage monitoring to ensure stable performance under varying load conditions.

• Exact OEM Replacement: Direct fit for legacy boards like CESO110057-00 and CESO110051-01, ensuring trace-to-trace wiring alignment for HVAC technicians.
• Enhanced Troubleshooting: Integrated LED status indicators provide blink codes for 100% gas shutoff scenarios and ignition failure diagnostics.
• Optimized Airflow Control: Features adjustable blower-off delay settings to maximize heat exchanger efficiency and residential comfort.
• System Protection: Built-in circuit protection guards against electrical surges and incorrect wiring polarity during installation.

Common Questions

What does a rapid flashing LED on this control board signify?
A rapid flash typically indicates reversed 120V polarity. Verify that the hot (black) and neutral (white) wires are correctly landed on the primary side of the furnace transformer and the board's line voltage terminals.

Can the CESO110057-02 be used in twinned furnace setups?
Yes, it is twinning-compatible. You must use a CESO110005 twinning module and remember to remove the short jumper wire between pins ST-2 and 225 on one of the boards to avoid timing conflicts.

Why is the blower motor running for 90 seconds immediately after power-up?
This is a standard safety sequence. If the board detects a call for heat (R-W closed) upon receiving power, it defaults to a 90-second blower-on delay to purge the heat exchanger before attempting ignition.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.