Armstrong Furnace RS36453B001 Flame Sensor 1-inch window and a removable

1-inch window and a removable

Technicians should measure the microamp (µA) signal using a multimeter in series with the sensor wire

specifically crossing CS4AN02A24 and CS4AF02A18

Common Questions What causes a Bard 93C thermal cutoff to blow

or a soot-covered secondary heat exchanger

Armstrong Furnace RS36453B001 Flame Sensor 1-inch window and a removableThe Armstrong Furnace RS36453B001 Flame Sensor is a critical genuine OEM replacement part engineered for precise flame rectification in Armstrong and Armstrong Air heating systems. As a direct substitute for the 36453B001 flame sensor, this component is essential for technicians addressing furnace ignition failure or erratic burner behavior. By providing a low microamp signal back to the HVAC control board upon detecting a pilot or burner flame, it