International Comfort Products 1184879 Main Limit Switch Assembly - L205-20F

The International Comfort Products 1184879 is a genuine OEM main limit switch assembly, designated L205-20F, designed for high-temperature safety regulation in residential gas furnace systems. This factory-specification component is a direct replacement for ICP family brands including Heil, Tempstar, Comfortmaker, KeepRite, and Arcoaire furnaces.

The L205-20F limit switch is a bimetallic thermal safety sensor engineered to open the electrical circuit at a fixed 205°F trip point, with automatic reset after a 20°F temperature differential drop. This precise thermal response protects the heat exchanger from overheating damage and ensures the furnace remains within safe operating parameters.

Key Features:

• Fixed 205°F Trip Point: Accurate overheating protection with a 20°F automatic reset differential
• Genuine OEM Part: Meets exact factory resistance and thermal response specifications for ICP systems
• Broad Brand Compatibility: Engineered for use across Heil, Tempstar, Comfortmaker, KeepRite, and Arcoaire furnace platforms
• Safety Logic Restoration: Resolves furnace limit switch fault codes and short-cycling caused by sensor drift or mechanical fatigue
• Direct-Fit Design: Correct mounting depth and probe geometry for accurate supply plenum temperature sensing

Compatible model series include F9MAC, G9MAC, G96VTN, F96VTN, F9MVT, F9MXE, and F9MXT among others. This switch is the correct choice when troubleshooting persistent open-limit error codes or continuous blower operation with burners off.