or obstructions within the secondary heat exchanger

this unit is a staple for local sub-panel builds and equipment upgrades

As the direct replacement for the discontinued 590715

OEM Compatibility: Precision-manufactured to the original factory specifications for Williams P323074

technicians should also verify there are no blocked flue vents

Bard HVAC 8554-019BX Flame Sensor or obstructions within the secondaryThe Bard HVAC 8554 019BX Flame Sensor is a high precision OEM component engineered for critical burner flame supervision in Bard environmental systems. Featuring a durable . 114 inch rod, this sensor is duty rated for high cycle industrial and residential applications. The 8554 019BX is functionally identical to the Bard 8554 019, providing a direct drop replacement that ensures seamless communication with the furnace control board. When the ignition