Lochinvar & A.O. Smith 100074220 Flame Rod

The Lochinvar & A.O. Smith 100074220 Flame Rod is a critical OEM replacement part designed for formal flame rectification within high-efficiency commercial and residential water heaters. As an authentic sensor assembly, it monitors the DC micro-amp signal produced during combustion to ensure the burner remains lit. If your system is experiencing "Ignition Failure" lockouts or rough operation, a fouled or degraded flame sensor is the primary culprit. This genuine A.O. Smith 100074220 component is engineered to withstand the intense thermal stresses of the burner chamber, providing reliable flame proving capabilities for compatible Lochinvar boilers and A.O. Smith tankless models, including the 310, 510, and 910 series. Professionals favor this flame rod for its precise fitment and the ability to prevent dangerous gas buildup by instantly signaling the gas valve to shut down if the flame signal drops below the required 1.0 µA threshold. Ensure total system reliability and avoid nuisance service calls by utilizing this specialized HVAC flame sensor during routine maintenance.

• OEM Precision: Guaranteed compatibility with Lochinvar and A.O. Smith commercial water heater models like the 310, 510, 520, and 710.
• Enhanced Conductivity: High-grade stainless steel rod construction ensures accurate DC micro-amp feedback for consistent flame proving.
• Safety Integration: Works directly with the ignition control module to prevent gas accumulation during ignition failure events.
• Direct Replacement: Simplifies repairs by using the exact 100074220 technical specifications required for factory-spec performance.

• What are the symptoms of a failing 100074220 flame rod? The most common issues include the burner lighting briefly and then shutting down, or the control board displaying a 1.0 µA error or flame fail code.
• Can this flame sensor be cleaned before replacement? Technicians often use fine steel wool to remove carbon oxidation; however, if the ceramic insulator is cracked or the metal is severely pitted, replacement with a new 100074220 is necessary.
• Is this part compatible with tankless units? Yes, this specific flame rod is engineered for use in several commercial tankless water heater series, proving flame presence in high-demand environments.

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.