Advanced Diagnostics: Built-in diagnostic LED status indicator identifies three distinct error codes

Negative Pressure Optimized: Specifically counter-sprung to prevent unrequested valve opening in high-velocity pull-through burner designs

accommodating tight plenum spaces during service calls

Utilizing genuine HVAC furnace safety switches like the 10123531 maintains the integrity of the system's safety circuit while reducing troubleshooting time during high-limit trip calls

This dual pressure control utilizes a SPST switch action to provide comprehensive system protection by managing both suction and discharge pressures

Lochinvar & A.O. Smith 100172013 Gas Valve 318423-701 Advanced Diagnostics: Built-in diagnostic LEDThe Lochinvar & A. O. Smith 100172013 Gas Valve is an authentic OEM replacement assembly engineered for precise fuel regulation in high efficiency Knight wall mount boilers. As a critical component of the combustion system, this SIT Sigma 848 gas valve utilizes a 1: 1 air gas ratio pneumatic modulator to ensure the burner receives the exact manifold pressure required for stable ignition and optimal thermal efficiency. It is designed to handle the