Lennox Furnace Ignition Control Board

The Lennox Furnace Ignition Control Board (also called a furnace control board, integrated furnace control, or ignition control module) manages the start-up sequence and safe operation of a Lennox gas furnace. It coordinates the thermostat call for heat, inducer motor, hot surface igniter, gas valve, flame sensing, and blower operation.

Key Features:

• Controls the furnace ignition sequence from the thermostat call for heat through burner shutdown
• Monitors flame sensing and safety limit circuits to help protect the furnace and your home
• Manages blower on and off timing during heating and cooling cycles
• Built for Lennox furnaces as a direct replacement for the original control
• Often includes diagnostic LED indicators to help technicians troubleshoot faults

Replacing a failed or intermittent ignition control board can restore reliable heating performance. Common symptoms include a furnace that will not ignite, short-cycles, or has a blower that will not run. Choose the specific part number that matches your furnace model. Installation should be performed by a qualified HVAC technician with the power and gas supply turned off.