York S1-331-09150-001 Control Board

The York S1-331-09150-001 Control Board is a critical OEM replacement part engineered for two-stage furnace systems and residential air conditioning units. As a veteran-grade HVAC ignition control, this Simplicity Lite control board manages the complex timing of the gas valve, flame sensor, and blower motor, ensuring precise 2-stage heating and cooling cycles. Field technicians typically utilize this board to resolve issues with intermittent ignition or erratic sequences of operation in York, Coleman, and Luxaire equipment. The S1-331-09150-001 features a 1-Amp electrical rating and is a direct functional replacement for older part numbers, including 331-09150-001 and S1-33109150001. Designed for durability in demanding environments, this furnace circuit board incorporates failure-resistant diagnostic logic and real-time monitoring to prevent premature component wear. When replacing this unit, verify the 24V secondary transformer output and check for a steady green light or specific flash patterns to confirm correct installation and communication with the thermostat.

• Advanced 2-Stage Logic: Specifically optimized for managing 2-stage furnaces, providing efficient transitions between low and high-fire modes.
• Enhanced Diagnostics: Integrated LED flash code system allows for rapid troubleshooting of pressure switch trips, flame sense current, and limit switch faults.
• OEM Compatibility: Genuine York replacement part ensures exact fitment and terminal alignment with existing wiring harnesses in matched equipment.
• System Protection: Built-in anti-short cycle delays (ASCD) and automatic lockouts safeguard the compressor and heat exchanger from operational stress.
• Field-Proven Reliability: Constructed with high-quality components to withstand voltage fluctuations and environmental heat within the furnace vestibule.

Is the S1-331-09150-001 a direct replacement for my older board?
Yes, this York control board replaces several previous iterations, including S1-33109150001 and 331-09150-001. Always verify the part number on the actual board or the unit's parts list before installation.

What do the LED flash codes indicate on this board?
The diagnostic LED indicates system status; for example, 3 red flashes typically signal a pressure switch fault, while 1 red flash indicates a flame sense error without a call for heat. Refer to the wiring diagram on the unit's door for a full code legend.

Do I need to drill new mounting holes for this board?
In some older furnace models, the mounting footprint may differ slightly from the original ignition control. Professional installers should use the included drill template if original peg locations do not align perfectly.

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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.