Lennox 12J99 Ignition Control 30067439-890 it features a 3

it features a 3

the original gasket loses its compression set and will not provide a reliable seal if reinstalled

providing overhead for demanding motor and heater applications

or if a temperature drop across the drier exceeds 3°F

Built with a rugged snap-acting SPST switch and silver contacts

Lennox 12J99 Ignition Control 30067439-890 it features a 3The Lennox 12J99 Ignition Control (Part Number 104278 01) is a critical OEM furnace control board designed for precise sequencing of the ignition process in 24 VAC residential heating systems. As a direct cross replacement for legacy components including Lennox 60M32, 12J9901, and the original 104278 01, this module manages the gas valve, ignitor, and flame sensing circuits to ensure safe combustion cycles. This electronic integrated ignition control