Lochinvar & A.O. Smith 100108831 Electrode Ignitor

This Lochinvar & A.O. Smith 100108831 Electrode Ignitor is a critical OEM replacement component designed for high-efficiency commercial boiler and water heater combustion systems. Engineered for precise hot surface ignition, this silicone carbide-based ignitor ensures a reliable spark for the pilot assembly, maintaining consistent burner sequences even in high-demand environments. Its robust ceramic insulation prevents electrical leakage or grounding issues, making it a direct fit for several Lochinvar Knight and A.O. Smith BTH series units. As a technical professional, you understand that electrode failure is a common cause of lockout codes; this unit provides the necessary dielectric strength to withstand rapid thermal cycling. Replacing an aging ignitor with this genuine 100108831 part restores optimal ignition timing and prevents nuisance shutdowns associated with carbon buildup or micro-cracks in the heating element. Ensure the flame rod gap is set to manufacturer specifications during installation to maximize signal strength back to the control board.

• OEM Compatibility: Exact replacement for Lochinvar and A.O. Smith part numbers 100108831 and 9005958005.
• Durable Construction: High-grade ceramic insulator and heavy-duty leads resist thermal stress.
• Optimized Ignition: Designed for rapid heat-up times to facilitate smooth burner light-offs.
• Technical Reliability: Engineered to withstand the high-temperature environment of the combustion chamber.

Common Technical Questions

What are the symptoms of a failing 100108831 electrode?
Common signs include audible clicking with no ignition, "No Flame" error codes on the diagnostic LED, or visible cracks on the ceramic insulator or the heating element itself.

Does this ignitor include the gasket?
Standard replacement kits typically include the necessary mounting gasket; however, reusing an old gasket is never recommended as it can lead to dangerous combustion leaks.

Can I use this in place of a standard flame rod?
No, this specific component is calibrated for ignition sequences. Using an incorrect electrode can lead to improper flame sensing and system lockouts.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.