Armstrong Furnace R42640-001 Ignitor/Sensor Els PW 17895 What causes a drain trap

What causes a drain trap like the 1171917 to fail

If the pilot flame frequently flickers or goes out due to external drafts

Whether you are addressing a noisy outdoor AC unit or a complete blade failure

including select Utica Boilers and Dunkirk gas boilers

This specific model is designed for 24V alternating current (AC) systems

Armstrong Furnace R42640-001 Ignitor/Sensor Els PW 17895 What causes a drain trapThe Armstrong Furnace R42640 001 Ignitor Sensor is a critical OEM replacement part designed for precise ignition and flame rectification in residential HVAC systems. Engineered as an ignitor sensor less pilot assembly, this component ensures reliable burner cycles by providing the necessary spark and feedback signal to the furnace control board. Transitioning to a high performance silicon nitride ignitor configuration often improves longevity over