Common failure indicators include humming without rotation

The indicator is sensitive enough to provide accurate dry/wet readings for systems using POE oils

allowing technicians to quickly identify fault codes for ignition lockout or internal failures without complex external testing

the 24K41 is backward compatible with systems requiring fewer stages

Utica-Dunkirk 240008227 Flue Sensor 326070-701 Common failure indicators include hummingThe Utica Dunkirk 240008227 Flue Sensor is a critical safety and performance component designed for high efficiency condensing boilers and industrial combustion systems. This 1 4" NTC thermistor features a 12K Ohm resistance at 25C (77F), providing the precise thermal feedback required for modern boiler control boards to monitor exhaust temperatures and prevent overheating. Built with a rugged stainless steel probe and a high reliability thermistor,