Check for 120V at the primary leads

3" Insertion Depth: Optimized probe length ensures the sensor reaches the hottest point of the air stream for accurate sensing

or an oversized furnace

Manual reset switches are safety devices designed to ensure a technician evaluates the system before it resumes operation

and Payne condenser units

Trane CNT3671 Pressure Switch Check for 120V at theThe Trane CNT3671 Pressure Switch is an essential OEM replacement part designed for precise airflow monitoring in gas furnace and air handler applications. This . 20" WC SPST air pressure switch functions as a critical safety limit, ensuring the inducer motor establishes proper static pressure before the ignition sequence initiates. Rated for a single pole single throw (SPST) configuration, the CNT3671 features snap acting contacts and is engineered