technicians typically specify the 117U6020

Reliable Safety Diagnostics: Includes a built-in pressure tap for easy manometer readings during commissioning or annual performance testing

which is standard for the blower wheel assemblies in compatible Modine units

What causes a "Pressure Switch Open" error

ensuring a leak-proof seal in the field

Trane SWT3157 Pressure Switch 30067439-890 technicians typically specify the 117U6020The Trane SWT3157 Pressure Switch is an OEM grade low pressure switch designed specifically for R 410A and similar residential refrigeration and air conditioning systems. Engineered for precision monitoring, this SPST (Single Pole Single Throw) component provides a critical failsafe by opening the electrical circuit when suction line pressure drops below safe operational thresholds. This specific model features a factory calibrated 25 PSI open (break)