ICM Controls ICM281 Control Board

The ICM Controls ICM281 is a microprocessor-based furnace control board designed for direct "fit, form, and functional" replacement of Carrier CES0110057-xx series modules. Built for reliability in high-demand residential and commercial systems, this integrated furnace control (IFC) manages the gas valve, inducer motor, ignitor, and blower, while providing dedicated terminals for a humidifier and electronic air cleaner. For technicians handling larger jobs, the ICM281 supports twinning functionality, allowing dual-furnace synchronization through the twin terminal. Safety is prioritized with a 100% gas shutoff protocol in the event of ignition failure and integrated reverse polarity protection. Troubleshooting is streamlined via high-visibility diagnostic LED fault codes, which signal issues like flame sense failure or pressure switch trips. This board is compatible with standard 24 VAC thermostats and features secondary brownout voltage protection to safeguard sensitive onboard electronics from line voltage fluctuations.

• Direct Carrier Replacement: Drop-in compatibility for CES0110057-00, CES0110057-01, and CES0110057-02.
• System Synchronization: Seamless twinning compatible design for dual-unit operation with another ICM281.
• Advanced Diagnostics: Onboard LED flash codes significantly reduce diagnostic time on-site.
• Robust Protection: Features brownout protection and reverse polarity sensing to prevent board failure during unstable power conditions.
• Comprehensive Control: Manages the heating cycle, cooling fan, and auxiliary accessories like air cleaners and humidifiers.

Is the ICM281 compatible with 80% and 90% AFUE furnaces?
Yes, the ICM281 is designed to work with both 80+ and 90+ gas furnace platforms, provided the existing board matches the supported Carrier part numbers.

How do I test the board components?
Technicians can initiate a component self-test by briefly shorting the TEST/TWIN terminal to the 24V common, which cycles the inducer, blower, and ignitor to verify individual relay functionality.

What does a rapid-flash LED signal?
A rapid-flash usually indicates a twinning error where the two furnaces are out of phase. Verify that both boards share a common ground and the 24 VAC supplies are properly phased.

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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.