While most control boards operate on 24VAC

reducing operational fuel expenditure

providing the rapid response time necessary to maintain consistent combustion cycles and prevent nuisance short-cycling lockouts

or if the switch shows no continuity at room temperature

Watts 0780007 Float Valve Els PW 17895 While most control boards operateThe Watts 0780007, also known as the 750 Series mechanical float valve, is a heavy duty, high capacity solution engineered for demanding commercial, industrial, and agricultural fluid control applications. Designed for tank wall mounting, this 3 4 inch valve features a robust bronze body construction and high tensile manganese bronze arms, ensuring durability in harsh environments like cooling towers, refrigeration systems, and large scale irrigation