This 180-degree manual reset thermal safety switch is engineered to de-energize the burner circuit when it senses dangerous heat from blocked flues

Using a blade with a different pitch than the specified 23 degrees can result in inadequate airflow or motor burnout

HK06NC001 is the direct replacement for HK06WC025

simplifying inventory by allowing one coil size to fit all valve port variations

Robertshaw 780-787 Ignition Module 30067439-890 This 180-degree manual reset thermalThe Robertshaw 780 787 Ignition Module is a professional grade Hot Surface Ignition (HSI) Control engineered for high reliability performance in gas fired heating systems. This specific unit is a direct replacement for the HS780 34NR 306A, maintaining exact electrical and mechanical specifications for seamless field installation. Operating on a 120V AC supply voltage with a 24V AC control input, this module features a 34 second ignitor warm up period