Debris in the pilot orifice is a common cause of restricted diaphragm movement

a valve with PTFE or specialized steam-rated internals is required

What does the blinking red LED mean

and PDP series heaters

and alarm conditions

Lochinvar & A.O. Smith 100110776 Gas Valve 318820-201 Debris in the pilot orificeThe Lochinvar & A. O. Smith 100110776 Gas Valve is a critical OEM component designed for high efficiency natural gas water heaters and boilers. Engineered as an Intellivent Thermostat Gas Control, this valve features a 120V AC electrical interface and a 2. 25 inch shank, providing precise regulation for residential and commercial water heaters. With a standard 1 2" NPT connection and a fixed 4" WC manifold pressure, it ensures consistent fuel delivery