Trane SWT2533 Pressure Switch Els PW 17895 What causes a high-limit switch

What causes a high-limit switch to trip repeatedly

under-voltage leading to plunger stalling

Using it with a clockwise motor will result in insufficient draft and pressure switch errors

effectively breaking the safety circuit

this component is utilized primarily in the liquid line of York's BRCQ and BRHQ series units

Trane SWT2533 Pressure Switch Els PW 17895 What causes a high-limit switchThe Trane SWT2533 Pressure Switch is an essential OEM safety component designed for precise draft pressure monitoring in Trane and American Standard furnaces. This single pole, normally open switch is engineered to detect specific vacuum thresholds, ensuring the inducer motor is moving sufficient combustion air before ignition occurs. With a calibrated operating range of 1. 11 PF Open to 1. 29 PF Close, the SWT2533 prevents hazardous operation caused