York S1-031-09125-000 Control Board

For technicians servicing high-efficiency rooftop units and split systems, the York S1-031-09125-000 Intelli-Comfort Control Board is the definitive OEM replacement to restore precise logic control and system sequencing. Designed for seamless integration with York HVAC systems, this board manages critical functions including inducer motor timing, ignition control sequences, and blower speed modulation. As a genuine York replacement part, it ensures HVAC part compatibility without the signaling lags or "phantom" fault codes often associated with generic universal boards. Field-verified for units requiring advanced diagnostic feedback, this Johnson Controls engineered component provides reliable 24V furnace control board operation, maintaining the tight tolerances required for modern commercial and residential climate control.

Key Benefits:

• Precision Logic Execution: Eliminates erratic cycling by providing stable York control board troubleshooting diagnostics through onboard LED indicators.
• Direct OEM Fitment: Plug-and-play installation with standard wiring harnesses, reducing field labor time and preventing short-cycling issues.
• Advanced System Communication: Fully supports Intelli-Comfort protocols to optimize airflow and fuel efficiency across varying load demands.
• Robust Electrical Protection: Engineered to withstand common line voltage fluctuations, protecting downstream components like gas valves and inducer motors.

Common Questions:

How do I diagnose a failure on this Intelli-Comfort board?
Technicians should first monitor the onboard diagnostic LEDs. A steady red light typically indicates internal failure, while specific flash codes (1 to 12) identify issues ranging from pressure switch lockouts to flame sensor current dropping below 1.5 microamps.

Is this board compatible with two-stage systems?
Yes, the S1-031-09125-000 is specifically designed for systems utilizing multi-stage heating and cooling, ensuring correct staging of the compressor and blower speeds for optimal dehumidification and temperature balance.

What should be checked if the unit shows a lockout after board replacement?
Always verify the 24V secondary voltage at the transformer and check for proper grounding. Ensure the t-stat wiring "G" and "Y" signals are properly terminated to avoid the 4-amber flash wiring fault.

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.