Lennox 22K51 Control Board

The Lennox 22K51 Ignition Control Board (OEM 607308-22) is a critical integrated furnace control designed for high-performance service in select Lennox communicating-enabled gas units. Engineered to interface with SL280UHV, SL280DFV, EL296UHV, and EL296DFV heating systems, this 120V furnace ignition module ensures precise hot surface ignitor timing and reliable flame sensing. This board replaces legacy 107045-XX series controls, providing a stable platform for furnace diagnostic codes and system monitoring. Built to withstand consistent thermal cycling and vibration, it manages the burner ignition sequence with accuracy, reducing the risk of watchguard lockouts. For technicians, the Lennox 22K51 control board simplifies troubleshooting with onboard LEDs that signal HVAC error codes and status updates. When performing a furnace board replacement, ensure the line voltage is checked for correct polarity and verify 120V supply to prevent internal hardware failure or low-voltage interference. This HVAC part is an exact-fit OEM Lennox circuit board, maintaining the original factory communication protocols and safety parameters for peak system efficiency.

Key Benefits

• Direct OEM Replacement: Ensures full compatibility with Lennox communicating systems without the need for field modifications.
• Advanced Troubleshooting: Built-in diagnostic LEDs display specific furnace error codes to pinpoint pressure switch or flame sensor issues.
• Enhanced Safety: Real-time flame rectification monitoring and automatic burner shutdown protocols prevent hazardous gas accumulation.
• Versatile Application: Supports both communicating and non-communicating gas furnace configurations with 120V ignition requirements.

Common Questions

Does the 22K51 support 95V ignitors?
No, this control board is strictly designed for use with 120V hot surface ignitors. Installing this board in a system equipped with a 95V ignitor will cause component failure.

What does a fast-flashing LED on this board indicate?
Typically, a fast flash on Lennox SureLight ignition systems indicates an improper main ground or reversed line voltage polarity. Always verify 120V wiring before finalizing the install.

Can I use this board in non-communicating furnaces?
Yes, the Lennox 22K51 is functional in both communicating-enabled and non-communicating applications, provided the furnace model matches the technical specifications.

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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.