Lennox 24W49 Pressure Switch 328140-751 verifying the module's 16-pin and

verifying the module's 16-pin and 5-pin connector integrity is critical for restoring system communication

this pressure switch monitors airflow and venting pressure

Technicians should look for erratic pen movement

Quiet Operation: Precision-balanced rotor and advanced housing reduce vibration and harmonic noise during startup and high-speed operation

Engineered specifically for R22 refrigerant circuits

Lennox 24W49 Pressure Switch 328140-751 verifying the module's 16-pin andThe Lennox 24W49 Pressure Switch is a critical safety component designed for specific Lennox furnace models to monitor the induced draft blower operation. This OEM Lennox replacement part, identified by part number 101021 04, is factory calibrated with a set point of 0. 70" WC PF 1. 05" WC. It ensures the combustion process is vented correctly before allowing the gas valve to energize. Built with a durable diaphragm and precise electrical contacts,