this York DSI board provides a reliable solution for common no-heat calls and intermittent ignition failures

ensuring system protection

this 100110806 switch is the primary suspect when the blower is running but ignition fails

When troubleshooting furnace short cycling or limit circuit lockout codes

it manages pressure differentials effectively across its range: 5–200 PSI for air

Belimo 6150L Valve 326058-757 this York DSI board providesThe Belimo 6150L is a 6 inch 2 way butterfly valve engineered for precision flow control in commercial HVAC and industrial process applications. As a direct cross reference for the F6150HD, this valve is designed for high performance modulation and bubble tight shutoff in chilled water, hot water, and condenser water loops. Built to withstand the rigors of mechanical rooms, it features a robust body construction compatible with standard ANSI flanges,