Williams P323095 Heat Sensor

As an HVAC professional, you know that consistent blower cycling is the difference between a satisfied client and a callback. The Williams P323095 Heat Sensor is the critical OEM fan switch required for precise thermal management in Williams Direct Vent Furnaces. This ceramic heat sensor is engineered to trigger the Blower 2303 assembly, ensuring the fan engages only when the heat exchanger has reached operating temperature and continues to run until the cabinet has sufficiently cooled. By utilizing high-temperature resistant ceramic construction, the P323095 avoids the common failure points of plastic-bodied components, such as warping or electrical contact degradation under high-heat conditions.

Installation is straightforward for any technician servicing 140 or 220/300 series models equipped with the 2303 blower kit. This direct replacement limit switch maintains original factory tolerances for safety and efficiency, preventing the blower from circulating cold air or the furnace from overheating during a cycle. When troubleshooting a blower that refuses to activate or fails to shut off, replacing the existing sensor with this genuine Williams Comfort Products part is the standard protocol to restore the factory-specified sequence of operations.

Key Benefits for the Contractor

• OEM Heat Sensor: Guaranteed compatibility with Williams Blower 2303 and Direct Vent Furnaces.
• Superior Thermal Durability: Features a high-grade ceramic body to withstand extreme furnace cabinet temperatures without electrical failure.
• Accurate Blower Control: Ensures the fan cycles based on precise heat exchanger temperatures for optimal air delivery.
• Safety Compliance: Built to meet original Williams Comfort Products engineering specs, protecting the unit from overheating and reducing component stress.
• Direct Fit: Standard 1/4-inch quick-connect terminals and included mounting hardware for efficient field replacement.

Common Technical Questions

Why is the blower not turning on in "Auto" mode?
If the furnace fires but the blower fails to engage in the "Auto" setting, the P323095 heat sensor is likely faulty and failing to close the circuit once the heat exchanger reaches temperature. Verify continuity across the sensor terminals when heated.

Can I use this for non-Williams equipment?
While many heat sensors look similar, the Williams P323095 is calibrated specifically for the thermal profile and mounting requirements of Williams Direct Vent units and the 2303 blower assembly. Using non-spec parts can lead to improper fan cycling or safety limit trips.

How do I identify if I need the P323095?
This sensor is a direct replacement for the fan limit switch found in Williams Blower Kit 2303. Check your furnace model and blower kit number; it is commonly used in 14036, 14038, 22038, and 30038 series wall heaters.

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.