Lochinvar & A.O. Smith 100276786 Display 318423-701 the internal diaphragm or seat

the internal diaphragm or seat O-ring likely requires replacement using this RK009-VT total kit

you should verify jumper positions for specific features like remote shutdown or occupancy sensors

maintaining identical mounting dimensions and pressure ranges

the coil sensor must be installed

For contractors performing preventative maintenance or troubleshooting water level control issues

Lochinvar & A.O. Smith 100276786 Display 318423-701 the internal diaphragm or seatThe Lochinvar & A. O. Smith 100276786 Display is a critical user interface display board designed for advanced hydronic and domestic hot water systems. As a genuine OEM LCD interface replacement, this component provides real time diagnostics and parameter control for high efficiency condensing units. It is specifically engineered for systems beginning with serial number 4015, ensuring seamless Lochinvar boiler control communication with the main power