ensuring precise contact closure and opening cycles to prevent line-side surges during startup

verifying airflow across the heat exchanger and checking for a restricted filter is essential before installing this automatic reset limit switch

Comprehensive Rebuild: Includes the quad ring

Combustion Motor Scroll

This genuine Lennox OEM part is engineered to break the electrical circuit to the blower motor and control board immediately upon the removal of the service panel

Trane CNT1220 Limit Switch ensuring precise contact closure andThe Trane CNT1220 (officially updated to CNT01220) is a high limit thermal safety control engineered for precise HVAC over temperature protection. Designed as a direct OEM replacement part, this 160F auto limit switch monitors the supply plenum temperature to prevent heat exchanger damage or unsafe operating conditions. Utilizing a normally closed SPST (Single Pole Single Throw) contact configuration, it interrupts the gas valve or heating circuit