Lennox 56W19 Control Board

The Lennox 56W19 Ignition Control Board, also identified as the Aire-Flo R47582-001, is a critical OEM replacement component for single-stage heating systems. This integrated furnace control manages the combustion sequence, including the hot surface ignitor (HSI), gas valve, and flame sensing rectification. Operating on a 24VAC (18-30 VAC) control circuit, this board is the direct replacement for 56W1901 and ensures high-performance switching without the frequent failures associated with generic universal modules. With dimensions typically measuring 4-5/8" x 5-7/8", it fits various Lennox CG80 and CG95 series models, along with specific equipment from Armstrong Air, Concord, and Ducane.

For technicians troubleshooting ignition failures, the 56W19 provides robust flame sensing and timing parameters designed to meet original equipment manufacturer standards. This genuine furnace circuit board is essential for restoring reliable furnace ignition and maintaining the safety protocols of the heating system, such as pre-purge and post-purge cycles. Utilizing an OEM Lennox 56W19 Control Board eliminates compatibility issues common with aftermarket kits, providing a 1:1 fit for your HVAC replacement parts needs.

• OEM Compatibility: Specifically engineered as a direct replacement for Lennox 56W1901 and Aire-Flo R47582-001, ensuring perfect terminal alignment and mounting hole spacing.
• Reliable Combustion Control: Precisely manages the ignition sequence and provides consistent 18–30 VAC power to the gas valve for safe furnace operation.
• Universal Multi-Brand Fit: Optimized for use in Lennox, Armstrong Air, and Ducane single-stage gas furnaces.
• Durable Electronics: Built to withstand the thermal stresses of the blower compartment and resist common failure points like cracked solder joints on relay terminals.

Is the 56W19 compatible with 56W1901?
Yes, the Lennox 56W19 is technically identical to and the official replacement for part number 56W1901.

What are the symptoms of a failing Lennox 56W19 board?
Common signs include the furnace failing to spark, the ignitor not glowing, or the system shutting down shortly after ignition due to a failure in the flame sensing circuit.

Can I use this board in a two-stage furnace?
No, this specific control is engineered strictly for single-stage heating systems and will not support the staging logic or additional inducer speeds of a two-stage unit.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.