Lochinvar & A.O. Smith 100167776 Module Kit

The Lochinvar & A.O. Smith 100167776 Module Kit is the critical OEM replacement part for maintaining precise combustion sequences in high-efficiency commercial and residential heating systems. This ignition module kit, which has superseded the Lochinvar RLY3002, is specifically engineered for Copper-Fin II CF/CH990-2070 boilers and water heaters. It manages the 24 VAC input and 120 VAC ignitor output to facilitate intermittent pilot ignition, ensuring consistent burner trial and flame monitoring. By replacing a failing control board with this genuine 100167776 module, technicians can resolve persistent ignition failure lockout codes and intermittent "flame fail" errors caused by voltage drops or internal relay degradation. The kit is designed for a direct physical and electrical fit, eliminating the need for field modifications while restoring the unit to original factory HVACR technical specifications for safety and fuel efficiency.

• Direct OEM Replacement: Seamlessly replaces legacy part RLY3002 with no mounting or wiring adjustments required.
• Precise Ignition Control: Optimizes 120V hot surface igniter or spark timing to reduce fuel waste during prepurge cycles.
• Enhanced Diagnostics: Integrated circuitry accurately interprets flame sensor signals to prevent nuisance lockouts.
• System Compatibility: Validated for high-demand Lochinvar Copper-Fin II series, including models CF990 through CH2070.

• What causes an "Ignition Failure Lockout" on Lochinvar units? This often stems from a dirty flame rod, incorrect gas pressure, or an ignition module that is no longer sending the required voltage to the ignitor.
• Is the 100167776 compatible with my RLY3002? Yes, the 100167776 is the official manufacturer-designated identical replacement for the discontinued RLY3002 ignition kit.
• Does this kit include the wiring harness? While designed for a direct swap, we recommend inspecting your current harness for heat damage before installing the NEW 100167776 module.

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.