OEM Lennox Ignition Control Module — 30W34

The genuine OEM Lennox 30W34 ignition control module is the brain that sequences your furnace's startup — energizing the igniter, opening the gas valve, monitoring the flame sensor, and controlling the blower and inducer at the right moments. This board delivers the precise timing and safety logic your Lennox furnace depends on for reliable, safe operation every cycle.

Common failure symptoms: Furnace won't ignite or the igniter never heats, short-cycling or lockout after several failed ignition attempts, flashing diagnostic LED fault codes on the board, intermittent no-heat calls, or the blower running continuously. Power surges and cracked solder joints are frequent causes of module failure.

Why OEM matters: Ignition timing, flame-rectification thresholds, and safety lockout sequences are calibrated specifically for Lennox burner assemblies. The factory 30W34 module matches your furnace's exact firmware and pin-out, so it drops in without rewiring or guesswork. Generic or rebuilt boards risk nuisance lockouts, mis-timed gas valve operation, and voided warranties. Choose genuine Lennox for safe, dependable heat.