York S1-2845-3111 Flame Sensor

The York S1-2845-3111 Flame Sensor is a precision-engineered flame rectification component designed for integration with York, Luxaire, and Coleman heating systems. This furnace flame sensor rod functions by sending a microamp signal back to the integrated furnace control once it detects a steady flame, preventing the gas valve from closing prematurely. In the field, a fouled or degraded S1-2845-3111 is a primary cause of repetitive ignition failure and system lockouts. This high-grade HVAC ignition component serves as a direct replacement for legacy part numbers like 2845-311P, featuring a robust ceramic insulator that prevents signal grounding issues. For contractors, utilizing an OEM York replacement part ensures the sensor maintains the specific geometry required for proper alignment within the burner stream, which is vital for high-efficiency models such as the TG9S and TM8E series. This rod is built to withstand extreme thermal cycling while maintaining electrical continuity for consistent burner performance.

Key Benefits

• Direct OEM Compatibility: Ensures seamless fitment and electrical calibration for York residential gas furnaces without the need for field modifications.
• High-Temperature Durability: The specialized alloy probe and high-grade ceramic insulation minimize signal loss and oxidation during heavy run cycles.
• System Reliability: Restores proper flame sensing to eliminate nuisance trips and burner short-cycling caused by carbon buildup or sensor fatigue.
• Simplified Installation: Features a standard mounting bracket and male spade terminal for rapid field replacement during service calls.

Common Questions

What are the signs that a York flame sensor needs replacement?

The most common indicator is the furnace lighting for a few seconds and then immediately shutting down. If the ceramic insulator is cracked or the rod is heavily pitted, a replacement is necessary to restore the microamp loop.

Can the S1-2845-3111 be cleaned instead of replaced?

While light oxidation can sometimes be removed with a non-abrasive pad, deep pitting or structural damage to the sensor rod requires a full replacement to ensure proper signal strength to the control board.

What microamp reading should this sensor produce?

Technicians typically look for a steady signal between 2.0 and 5.0 microamps, depending on the specific York control board requirements and burner configuration.

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.