Trane SWT3073 Pressure Switch 323080-701 functioning as a primary high-limit

functioning as a primary high-limit safety to prevent the furnace heat exchanger from reaching unsafe operating temperatures

though vertical upright is preferred for optimal longevity

While designed for Johnson Controls

Unlike fixed-head combs

Quick Diagnostics: Integrated test mode shortens cycle times for immediate on-site troubleshooting

Trane SWT3073 Pressure Switch 323080-701 functioning as a primary high-limitThe Trane SWT3073 Pressure Switch is an essential OEM replacement component for residential and light commercial gas fired furnaces. This SPDT (Single Pole Double Throw) air pressure switch is factory calibrated with a . 76" WC set point to monitor inducer motor airflow and verify appropriate negative pressure before allowing the ignition sequence to proceed. As a critical safety interlock, the Trane SWT03073 prevents unsafe operation by interrupting