This automatic reset limit switch features a 155°F opening threshold and a 125°F closing point

maintaining the correct manifold pressure is critical for burner efficiency and safety

Broad Series Compatibility: Fits a wide range of industry-standard VR8200 and VR8300 series valves found in residential and light commercial equipment

professional-grade uptime depends on reliable visual status indicators

If you observe a weak

York S1-2985-3181 Limit Switch This automatic reset limit switchThe York S1 2985 3181 Limit Switch is a critical OEM safety component designed for high limit protection in residential and light commercial furnace applications. This 160 190F Auto Limit Switch features a primary safety circuit that opens when the internal plenum temperature reaches its 190F trip point, effectively de energizing the gas valve or heating elements to prevent heat exchanger damage or hazardous overheating. As an automatic reset limit