York S1-025-35306-000 Flame Sensor

York S1-025-35306-000 is a flame sensor engineered to verify burner flame presence in gas-fired HVAC systems. The sensor operates using flame rectification technology, detecting a stable flame and signaling the control board to maintain gas flow. If the flame is not sensed, the system safely shuts down to prevent gas accumulation. It is commonly used in York gas furnaces, rooftop units, and packaged heating equipment. Benefits include improved operational safety, reliable ignition confirmation, reduced risk of flame failure, minimized system downtime, enhanced heating efficiency, and durable performance in demanding HVAC environments.