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Key Benefits for Technicians: Standardized 300°F Trip Point: Calibrated for specific Armstrong and Allied Air flame rollout tolerances to prevent heat exchanger damage
Always check for a dirty filter or blocked return before replacing
Is this compatible with American Metal Ware units
Can I use the 304400 on an FS7-4 series switch
Williams P200200 Fan Switch Key Benefits for Technicians: StandardizedThis Williams P200200 Fan Switch is a critical OEM replacement fan control designed for precise thermal management in Williams Forsaire and Magnum series furnaces. Engineered with a setpoint of 120F ON and a 15F differential, this SPST (Single Pole Single Throw) switch operates on a normally open circuit. It triggers fan activation once the plenum reaches the 120F threshold to ensure efficient heat exchange and prevent short cycling. As temperatures
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