Description
York S1-2845-3111 Flame Sensor Overview
The York S1-2845-3111 is an OEM replacement flame sensor designed for use in York furnaces and heating systems. The flame sensor plays a critical role in your system’s safety circuit — it detects the presence of a burner flame and signals the control board to confirm ignition. If no flame is detected within the trial-for-ignition period, the control board shuts off the gas valve to prevent unsafe fuel accumulation. Replacing a worn or contaminated flame sensor restores reliable ignition performance and prevents nuisance lockouts.
Key Features
- OEM York replacement flame sensor — engineered for precise fit and function
- Ensures accurate flame detection to maintain safe furnace operation
- Prevents nuisance lockouts caused by a degraded or oxidized sensor rod
- Restores proper communication between the burner assembly and control board
- Direct replacement for compatible York heating systems
- Durable construction for long-lasting, dependable performance
Why Replace Your Flame Sensor?
Over time, flame sensors accumulate oxidation and carbon deposits on the sensing rod, reducing the microamp signal sent to the control board. A weak signal causes the board to shut down the system even when a flame is present, resulting in repeated ignition failures and system lockouts. Installing a fresh York S1-2845-3111 flame sensor restores the proper signal and keeps your furnace running reliably through the heating season.
Application
- Compatible with select York furnaces and heating equipment
- Consult your equipment’s service manual or parts list to confirm compatibility before installation
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