S1-33103005000 York Control Board Simplicity

The York S1‑33103005000 Simplicity Control Board is the primary OEM replacement board used in York, Coleman, and Luxaire equipment built on the Simplicity platform. This board manages all major furnace and package‑unit functions, including ignition, blower sequencing, safety monitoring, and system communication.

Designed to restore proper operation and eliminate intermittent faults, this board is the correct replacement when units experience issues such as no‑heat, ignition lockouts, blower running continuously, or erratic system behavior.

Features & Functions

• OEM York / Johnson Controls Simplicity control platform

• Manages ignition sequence and flame sensing

• Controls blower timing for heat, cool, and delay cycles

• Monitors limit, rollout, and pressure switch circuits

• Provides LED fault diagnostics for fast troubleshooting

• Supports communication with outdoor equipment (model‑dependent)

Specifications

• OEM Part Number: S1‑33103005000

• Product Type: Furnace/Package Unit Control Board

• Brand: York / Johnson Controls

• Weight: 0.123 

• Package: Box 2 

Replaces / Cross‑References

• S1‑33103005000‑0

• 331‑03005‑000

• Earlier Simplicity series control boards (model‑specific)

Common Applications

Used in many York, Coleman, and Luxaire furnaces and package units equipped with the Simplicity control system. Ideal for restoring OEM performance and ensuring proper safety‑circuit operation.