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

or an oversized furnace

Technicians typically identify a failing blade by excessive vibration

Whether you are performing routine bench maintenance or an emergency field teardown

Trane CNT3671 Pressure Switch Manual reset switches are safetyThe 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