Parameter storage device fault (control circuit board)

What does E.PE mean?

This fault indicates an error with the inverter's internal parameter storage device (EEPROM) on the control circuit board. This can be caused by a corrupted memory block or by an excessive number of parameter write cycles, which can wear out the EEPROM. A corrupted EEPROM can lead to incorrect operation, loss of critical configuration data, or complete inverter malfunction.

Complete Troubleshooting Guide

1. 1

   If parameters are being written frequently (e.g., via communication), consider setting Pr. 342 to '1' to enable RAM write, which reduces wear on the EEPROM.

2. 2

   Attempt a full inverter reset (power cycle).

3. 3

   If the fault persists, it may indicate hardware failure of the control board. Contact your sales representative for further diagnosis or replacement.