F42

APS Over Voltage

Schneider Electric · XW Pro NA Operation Guide

What does F42 mean?

This is an Escalating Automatic Fault that occurs when the auxiliary power supply experiences an over-voltage shutdown. If this condition triggers 3 times within 30 seconds, it becomes a manual fault, indicating persistent excessive voltage for control circuitry.

Complete Troubleshooting Guide

  1. 1

    Clear the fault and attempt restart.

  2. 2

    If problem persists, call customer service.

Source: Schneider Electric Manual