York 331-02977-000 Control Board Kit

The York S1-331-02977-000 2 Stage ECM Control Board Kit is an essential OEM replacement engineered for precise furnace sequence control and ECM blower motor modulation. Designed for two-stage gas furnaces, this integrated furnace control (IFC) manages induction motor timing, ignition sequences, and multi-speed airflow adjustments to ensure optimal thermal efficiency. It serves as the direct HVAC replacement board for several legacy models, including 031-01909-000, 50A51-243, 331-02955-000, and 331-09169-000. The board’s logic is optimized for York furnace troubleshooting, providing clear diagnostic LED flashes to identify flame sense failures, pressure switch trips, or limit circuit opens. For technicians, this furnace control board kit simplifies service calls by unifying multiple superseded part numbers into a single, reliable York OEM furnace part. By maintaining steady communication between the thermostat and the variable-speed blower, it ensures consistent static pressure management across the ductwork system.

Key Benefits

• Direct OEM Compatibility: Engineered to replace 331-09118-000 and 50A51-243 without requiring modification to the mounting footprint or harness.
• Advanced Diagnostics: Features on-board LED indicators to streamline field troubleshooting and reduce diagnostic time.
• Enhanced Airflow Management: Provides dedicated terminals for 2-stage furnace control and ECM motor signals for balanced CFM output.
• System Reliability: Built with robust relays and high-grade soldering to handle the electrical loads of 80% and 95% AFUE gas furnaces.

Common Questions

Does this board support variable speed blower motors?
Yes, the S1-331-02977-000 is specifically designed to interface with ECM motors in two-stage heating and cooling applications, allowing for precise RPM control based on demand.

What does it mean if the LED on the York control board is flashing red?
The flashing pattern indicates a specific fault code. Common codes related to this York control board kit include 2 flashes for external lockout and 3 flashes for a pressure switch failing to close.

Can I use this kit to replace a generic universal ignition control?
It is recommended to use this kit only as a direct replacement for the specified York S1-331-02977-000 superseding part numbers to ensure correct furnace timing and safety parameters.

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.