or a specific flash code on the control board (often 3 flashes) indicating the pressure switch failed to close or stayed open during the startup sequence

Ensure the manifold pressure is clocked correctly to meet nameplate requirements during commissioning

Smith 100110811 Blocked Outlet Switch is a critical safety component designed for high-efficiency commercial water heaters and boilers

ensuring the valve port returns to the closed state upon power loss

Lochinvar & A.O. Smith 100111601 Valve 322027-701 or a specific flash codeThe Lochinvar & A. O. Smith 100111601 is a high capacity water pressure relief valve engineered for critical over pressure protection in commercial and industrial hydronic systems. Featuring a 3 4" NPT connection and a fixed 125 PSI pressure rating, this valve is designed to handle discharge capacities up to 2,289,000 BTU HR, making it a standard specification for high output boilers and water heaters. As a genuine OEM replacement part, it ensures