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this model is specifically a low-pressure cutout that opens on pressure drop
Does this include the ball joint or linkage rod
check the system wiring schematic to avoid immediate component damage
05" specified can lead to unsafe combustion conditions or frequent nuisance tripping
Williams P200400 Selector Switch this model is specifically aThe Williams P200400 F145 30F Selector Switch is a critical temperature actuated control engineered specifically for Williams Forsaire Direct Vent Wall Furnaces and high performance HVAC systems. This OEM Williams P200400 component functions as a dual point thermal safety and operational interface, maintaining precise system thresholds at 145F and 30F. Built with a robust toggle mechanism, it serves as a protective switch to safeguard heat exchangers
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