Supco FLS301 Flame Sensor for Hot Surface Ignition Systems

The Supco FLS301 is a universal replacement flame sensor designed for residential and light commercial furnaces that use hot surface ignition (HSI) or direct spark ignition systems. This sensor replaces Rheem/Ruud/WeatherKing OEM part number 62-23543-01 and Packard PFS301, providing a cost-effective solution for furnace repairs and maintenance.

Key Features:

• Alumina ceramic insulator for superior heat resistance and durability
• Kanthal flame rod material rated to withstand temperatures up to 1800°F
• 3-inch probe length with 90-degree offset angle for versatile mounting
• 2.5-inch measurement from flange to tip of rod
• Fixed bracket design with stud mount installation
• 1/4-inch quick disconnect electrical connection for easy installation
• Compatible with LP (liquid propane) and natural gas fuel systems
• 17-second igniter warm-up time

This flame sensor can be mounted on multiple burners or positioned adjacent to the igniter, providing flexibility during installation. The sensor works by detecting the presence of flame in the combustion chamber and sending a signal to the ignition control module to keep the gas valve open. The durable Kanthal rod material ensures long-lasting performance in high-temperature HVAC applications.