22

EEPROM Checksum Fault

Vacon · NX Liquid-Cooled Drive

What does 22 mean?

An error has been detected during the checksum verification of data stored in the EEPROM memory. This can affect various data sets, including firmware interface variables (S1, S2), system powerdown variables (S3), system parameters (S4, S10), or application-defined powerdown variables (S5, S6), suggesting potential data corruption within the drive's non-volatile memory.

Common Causes

  • Corrupted data in non-volatile memory.
  • EEPROM read/write error during startup.
  • Invalid configuration parameters stored.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the fault and attempt to restart the drive.

  2. 2

    Note down the specific subcode (S1-S6, S10) from the T.14 fault data record for diagnostic purposes.

Browse all codes in this manual (52)
Verified technical data. Last updated: March 2026

Related Faults

Source: Vacon NX Liquid-Cooled Drive