Lochinvar & A.O. Smith 100109966 Flame Sensor 321894-708 Optimized RPM: Factory-set 3400RPM maintains

Optimized RPM: Factory-set 3400RPM maintains the necessary flue draft for safe combustion

the A30-301 is the designated direct replacement for the 3030-601 model

5 MFD 370V capacitor for reliable startup and running torque

this sensor provides superior stability and long-term accuracy compared to standard thermistors

Rugged Construction: Built with an all-steel case and cover to protect internal components in demanding mechanical room environments

Lochinvar & A.O. Smith 100109966 Flame Sensor 321894-708 Optimized RPM: Factory-set 3400RPM maintainsThe Lochinvar & A. O. Smith 100109966 Flame Sensor is a critical diagnostic component designed for precise flame rectification in high efficiency commercial boilers and water heaters. This OEM replacement flame sensor (formerly part number 9004526005) ensures the burner control module receives a consistent microamp signal, preventing nuisance lockouts and ignition failure. Constructed with high grade alumina ceramic insulation and a durable Kanthal