Laars Heating Systems 2400-556 Flow Sensor 326010-701 and Payne rooftop models

and Payne rooftop models

this valve is a critical replacement part for maintaining the hermetic integrity of the liquid line during system evacuation or charging procedures

this assembly ensures the draft inducer meets the original equipment specifications for CFM output and electrical draw

Typical failure signs include the burner igniting and then shutting down within seconds (short-cycling) or the control board displaying a specific "Flame Sense" error code

Laars Heating Systems 2400-556 Flow Sensor 326010-701 and Payne rooftop modelsThe Laars Heating Systems 2400 556 Flow Sensor is a precision engineered OEM replacement part designed for critical fluid dynamic monitoring in hydronic boiler systems. As a veteran grade HVAC flow sensor, this component ensures the boiler maintains appropriate flow rates before allowing the ignition sequence, protecting the heat exchanger from dry firing and thermal stress. This sensor is specifically calibrated for compatibility with the Laars