Robertshaw 780-787 Ignition Module Els PW 17895 protecting sensitive furnace controls and

protecting sensitive furnace controls and burner primary controls from electrical noise during the ignition sequence

This labor-saving combo allows technicians to monitor on/off status and execute start/stop commands in a single housing

Maintains System Isolation: Prevents contaminated boiler water from re-entering the potable supply

What is included in the Watts 0887547 repair kit

When these pool heater limit switches fail

Robertshaw 780-787 Ignition Module Els PW 17895 protecting sensitive furnace controls andThe 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