Smith 100157743 Kit is a direct OEM replacement part featuring a 230F manual reset high limit switch

ensuring a clean break on temperature rise and providing a positive "OFF" position for safe system isolation during maintenance or idle periods

Common symptoms include a humming noise without fan movement

Does this board require specialized software flashing

Universal Application: Engineered specifically for Lennox ECB26 series equipment

Rheem-Ruud SP8099N Gas Valve 321894-708 Smith 100157743 Kit is aThe Rheem Ruud SP8099N is a high capacity natural gas valve designed for heavy duty commercial and residential HVAC applications requiring a 1" x 1" NPT connection. As a critical component in high output furnace and boiler systems, this Robertshaw gas valve replacement features a 120V solenoid coil and handles high BTU loads without significant pressure drops. For technicians troubleshooting ignition failures or manifold pressure inconsistencies, the