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The genuine OEM Lennox X1085 is a 30" ignitor and flame rod assembly engineered for SmartValve pilot ignition systems. This component both ignites the pilot flame and senses its presence, providing the flame-rectification signal that tells the SmartValve control it is safe to open the main gas valve. Correct rod length and material are critical to a stable, reliable microamp signal on your Lennox furnace.
Common failure symptoms: the furnace locks out or short-cycles, the pilot lights but the main burners never fire, you see repeated ignition-retry sequences, or a control-board fault indicating loss of flame signal. A cracked ceramic insulator, corroded flame rod, or degraded ignitor tip are typical culprits after years of thermal cycling.
Why OEM matters: Lennox SmartValve systems are tuned to specific flame-sensing thresholds and rod geometry. The factory-spec X1085 guarantees the proper resistance, positioning, and flame-rectification characteristics your control board expects — off-brand substitutes can cause nuisance lockouts and unreliable ignition. Choosing the OEM part protects safe operation and restores dependable heating.