Lennox 24W49 Pressure Switch 328140-751 Technicians should look for erratic

Technicians should look for erratic pen movement

Technician-Friendly Interface: Includes a high-contrast backlit display with a scrolling text bar for simplified setup and troubleshooting

this pressure switch monitors airflow and venting pressure

Standard field tools for HVAC electrical diagnostics and motor bracket adjustments are typically sufficient

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

Lennox 24W49 Pressure Switch 328140-751 Technicians should look for erraticThe 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,