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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
the Hydrotherm boiler flame sensor offers a durable
Flexible Installation: Multi-position mounting capability allows for horizontal
The internal capacitor system is designed for rapid recharging
The open dripproof (ODP) enclosure allows for maximum airflow over the internal windings
The S1-031-03010-000 is the factory-authorized York control board replacement for discontinued part numbers including S1-331-03010-000
Lennox 78M19 Supply Air Sensor 324846-701 the Hydrotherm boiler flame sensorThe Lennox 78M19 Supply Air Sensor (alternative part C0SNSR20AE1) is an essential component for maintaining precision discharge air control in high performance HVAC systems. Designed for integration with Lennox Prodigy Unit Controllers and CORE Control Systems, this supply static differential pressure sensor provides the critical feedback needed for Constant Air Volume Bypass (CAVB) and Variable Air Volume (VAV) applications. Whether you are servicing