White-Rodgers 50I56D-905

The White-Rodgers 50I56D-905 is an intelligent intermittent pilot (HSI) retrofit kit designed for ICP and Lennox single-stage PSC furnaces. This kit upgrades legacy SV9500, SV9501, and SV9502 electronic intermittent pilot gas valves to a reliable 120V HSI ignition system.

Included components deliver a complete retrofit with a standard gas valve and integrated ignition, reducing maintenance and improving startup performance. Built for durability and ease of installation, it supports modern control and safer flame operation across compatible systems.

• New 36G33-905 gas valve for a dependable ignition path and compatibility with 120V HSI systems.
• Control board 50I56-905 provides precise ignition timing and reliable electronic control for ICP/Lennox furnaces.
• Combination ignitor combines igniter and sensor for fast startups and safer flame sensing.
• Flame sensor 791Q-905KT1 ensures accurate flame detection and reduces false trips.
• Wiring adapter harnesses simplify installation with plug-and-play connections across SV9500/50I56-905 kit.

Designed for ICP and Lennox single-stage PSC furnaces, this retrofit kit streamlines installation and upgrades to a modern 120V HSI ignition system, delivering improved reliability and longer system life.