Williams P200400 Selector Switch

The 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 145°F and 30°F. Built with a robust toggle mechanism, it serves as a protective switch to safeguard heat exchangers from overheating while preventing freeze-up conditions in cooling cycles. Designed for the Williams 5507 Series and 6007 Series, this multi-position F145-30F selector switch ensures seamless communication between the furnace control board and the blower assembly. Contractors rely on this part for its durable contact points and vibration-resistant housing, which are essential for maintaining HVAC system efficiency in residential and industrial cabinet interiors. Replacing a degraded furnace selector switch with this genuine HVAC replacement part restores reliable fan speed control and operational safety, ensuring the unit remains within factory-specified temperature parameters for long-term reliability.

• Dual-Threshold Protection: Specifically calibrated to 145°F and 30°F to provide vital thermal monitoring for direct vent furnaces.
• OEM Compatibility: Precision-engineered for a perfect fit in Williams Forsaire 5507 and 6007 series wall furnaces.
• Industrial-Grade Control: Features high-integrity contact positions to ensure consistent electrical continuity in demanding HVAC environments.
• System Safety: Operates as a critical safeguard against equipment failure by managing temperature-controlled HVAC thresholds.

What are the specific temperature settings for the Williams P200400?
This switch is an F145-30F model, meaning it is factory-set to actuate at 145°F and 30°F thresholds to manage heating and cooling safety limits.

Is the P200400 compatible with Williams top vent furnaces?
No, this specific part is designed for Forsaire Direct Vent models. Top vent units typically require the P213400 selector switch; always verify your furnace model number before installation.

How do I know if my furnace selector switch needs replacement?
Common symptoms include inconsistent fan operation, the blower failing to engage during a call for heat, or the system cycling off prematurely due to inaccurate thermal readings.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.