Description
The York S1-02535354000 Furnace Flame Sensor is a detection probe that verifies burner ignition by confirming the presence of a stable flame during gas furnace operation in HVAC systems. It works through flame rectification, sending a small electrical signal to the control board when the flame is properly allowing continued fuel flow operation. Installed in gas furnace burner assemblies, it is positioned directly in the flame path where it monitors combustion in helps shut down the system if flame is detected, ensuring secure ignition control in residential and light commercial equipment.
