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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

F48

Params Defaulted

Allen-Bradley · PowerFlex 4 Adjustable Frequency

What does F48 mean?

This fault indicates that the drive has either been commanded to restore factory default values to its EEPROM, or a corruption of parameter data occurred spontaneously. This resets all configurable parameters.

Common Causes

  • Power loss or incorrect parameter save operation.
  • Factory reset or parameter initialization performed.
  • EEPROM or memory corruption affecting parameter storage.
  • Parameter load failure from external source.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Clear the fault by pressing the Stop key, cycling power to the drive, or setting parameter A100 [Fault Clear] to option 1 ('Reset Fault') or 2 ('Clear Buffer').

  2. 2

    Reprogram all necessary drive parameters to their application-specific values after the defaults have been written.

Browse all codes in this manual (24)
Verified technical data. Last updated: April 2026

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Source: Allen-Bradley PowerFlex 4 Adjustable Frequency
Open Manual (Page 15)Search more codes in this manual