York S1-025-30788-700 Flame Sensor an infinite "OL" reading indicates

an infinite "OL" reading indicates a hairline crack in the element

Common Questions: What causes a York furnace limit switch to trip

this unit is designed to withstand the rigors of the mechanical room while providing an ASME B40

allowing for more devices per notification appliance circuit (NAC) loop

York S1-025-30788-700 Flame Sensor an infinite "OL" reading indicatesThe York S1 025 30788 700 Flame Sensor is a critical OEM replacement component designed for precise flame rectification within residential and commercial furnace assemblies. As a direct replacement for the legacy 025 30788 000, this sensor operates by utilizing the ionized particles in the gas flame to conduct a microamp signal back to the integrated furnace control board. When the York furnace flame sensor detects a stable flame, it allows the gas