or if the flame sensor signal is weak

As a high-reliability inducer air pressure switch

This comprehensive kit includes the WRC23 ignitor

providing sufficient force for multi-blade dampers without the complexity of a mechanical return spring

Burnham Boiler 109620-01 Valve THPU32HP7Y or if the flame sensorThe Burnham Boiler 109620 01 Valve is a critical gas control component engineered for precise natural gas manifold pressure regulation between 0. 7" and 3. 5" W. C. This 1 2 inch NPT gas valve features a step opening characteristic, ensuring smooth ignition transitions and stable combustion across Burnham residential hydronic systems. As a direct OEM replacement valve for discontinued part numbers 81660145U and 81660282, it maintains the structural