Lochinvar & A.O. Smith 100167906 Ignition Module

The Lochinvar and A.O. Smith 100167906 Ignition Module is a critical integrated control designed for high-efficiency commercial water heaters and boilers. This direct spark ignition (DSI) control operates on 115V and features a 3-amp rating, facilitating precise flame sensing and sequencing for safe combustion cycles. It is engineered to replace legacy part numbers including 100167906, 1073-100, and 1073-83-1031A, ensuring seamless OEM compatibility with series like the AW, AM, and FB models. The module utilizes a lockout timing mechanism to prevent unsafe gas accumulation during failed ignition attempts, providing reliable system diagnostics through integrated LED indicators. For contractors, this 115v ignition board simplifies field repairs by maintaining factory-spec timing and current thresholds, ensuring the burner assembly meets original performance parameters without requiring modifications to the wiring harness or existing sensor probes.

Technical Specifications & Key Benefits

• Voltage & Amperage: Standard 115V input with a 3A load capacity for consistent solenoid and transformer operation.
• OEM Fitment: Direct replacement for Lochinvar boiler parts and A.O. Smith commercial water heater units to maintain UL/CSA listings.
• System Reliability: Features a dedicated ignition lockout mode to safeguard the heat exchanger and burner assembly.
• Diagnostic Monitoring: Assists technicians in troubleshooting flame rectification issues or 115v 3amp ign mod failure codes.
• Solid-State Circuitry: Designed to withstand the thermal demands of high-cycle commercial environments.

Common Technical Questions

What causes a lockout condition on the 100167906 module?
A lockout occurs when the module fails to detect a flame rectification signal within the allotted trial-for-ignition period, often caused by a fouled flame sensor, poor grounding, or a faulty gas valve relay.

Is the 100167906 compatible with older 1073-100 boards?
Yes, this direct spark ignition module is the official superseding part number for the 1073-100 series, maintaining the same mounting footprint and terminal connections.

How do I verify the flame signal on this control?
Technicians should measure the DC microamps (µA) at the flame sensor terminal; a low signal often indicates a need for burner cleaning rather than ignition control replacement.

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.