Lennox 10D84 (240009241) is an OEM boiler controller designed for precise operation and safety management of Lennox gas-fired boilers. This control board is used in the GWB8-IE and GWB84-IE boiler series, where it regulates ignition sequencing, burner operation, and overall system performance.

Built to Lennox factory specifications, this controller ensures reliable communication between boiler components, helping maintain proper combustion, efficient heat delivery, and safe system shutdowns when fault conditions are detected. It is a direct replacement part and installs without modification when replacing the original control.

 

Compatible boiler series:

• Lennox GWB8-IE
• Lennox GWB84-IE

 

Key features and benefits:

• OEM Lennox boiler controller for exact fit and function
• Manages ignition, burner timing, and safety monitoring
• Designed for stable boiler operation and consistent heating performance
• Direct replacement for part number 240009241
• Ideal for service replacements and professional HVAC repairs

 

Typical applications:

This boiler controller is commonly replaced when diagnosing ignition faults, control failures, or communication errors in compatible Lennox GWB boilers. Intended for qualified HVAC technicians familiar with boiler control systems.