121-676

This premium 2-stage ignition control board is an essential replacement circuit board for high-efficiency gas furnaces and heating systems. Engineered to manage the complex ignition sequence and operational logic of dual-stage units, this control module ensures your furnace transitions smoothly between low and high heating cycles for maximum comfort and energy savings. It serves as the central brain of the furnace, monitoring flame sensors, regulating the gas valve, and controlling blower motor timing to maintain safe and efficient operation. If your HVAC system is failing to ignite, shutting down prematurely, or displaying diagnostic error codes, this integrated furnace control board is designed to restore reliable functionality. Built with high-quality electronic components, it provides the durability needed to handle the demanding environments of modern forced-air systems.
Type: Ignition Control Board
Size: Medium
Application: Designed for use in multi-stage gas furnaces and HVAC heating units. Ideal for residential and light commercial forced-air systems requiring two-stage modulation and integrated safety monitoring.
Specifications: 2-stage heating logic, flame rectification sensing, LED diagnostic capability, 24V control circuit, timing for inducer and blower motors, integrated safety limit monitoring.