Lennox 10W56 Ignition Control 328140-751 Leak-Proof Sealing: Features a PTFE-faced

Leak-Proof Sealing: Features a PTFE-faced disc that resists sticking and ensures a tight shut-off after discharge

Balanced Valve Design: Eliminates setpoint drift caused by varying inlet water pressures

Smith 100074348 PCB is a critical OEM replacement control board designed for high-efficiency tankless water heaters and select boiler models

Common Questions What are the symptoms of a failing mixed air sensor

While it is the direct replacement for the 165965

Lennox 10W56 Ignition Control 328140-751 Leak-Proof Sealing: Features a PTFE-facedInstall the Lennox 10W56 Ignition Control Module to restore precise timing and safety monitoring to your residential gas heating system. As a direct OEM replacement part, this integrated solid state control manages the 24VAC ignition sequence, ensuring consistent burner light off and flame supervision. Known technically as part number 100253 01, this unit replaces legacy modules found in various Lennox and Allied Air configurations, including the