F48

DC Under Voltage

Schneider Electric · XW Pro NA Operation Guide

What does F48 mean?

This Automatic Fault indicates a DC under-voltage shutdown that occurs if the DC voltage stays below the Low Battery Cut Out (LBCO) for a specified delay. The inverter restarts when the voltage reaches LBCO + LBCO Hysteresis, suggesting similar troubleshooting steps as F47.

Complete Troubleshooting Guide

  1. 1

    Check for the correct battery voltage at the inverter’s DC input terminals.

  2. 2

    Check for an external DC load on the batteries.

  3. 3

    Check condition of batteries and recharge if possible.

Source: Schneider Electric Manual