York S1-02530801000 Flame Sensor

The York S1-02530801000 Flame Sensor is a safety part applied to HVAC systems, such as gas furnaces and boilers. This sensor identifies the existence of a flame in the interior of the burner. If the burner ignites, the sensor can detect this infrared energy and the system can continue to run. However, if the flame is extinguished, the sensor does not receive an infrared signal anymore. This leads to a safety mechanism that turns off the supply of the gas to the burner to avoid accumulation of dangerous gases.