F394

Checksum error power supply unit

Indramat · CLM01.3-M Flying Cutoff Control

What does F394 mean?

With HVR power supply units only! This fault indicates an internal unit failure within the Indramat HVR power supply unit, likely related to its internal software or memory integrity.

Common Causes

  • Internal unit failure within the HVR power supply unit.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Attempt to reset the Indramat HVR power supply unit by cycling its power (power off, wait at least 30 seconds, then power on).

  2. 2

    Check for any external factors that might cause internal errors, such as severe electromagnetic interference, unstable control voltage supply, or extreme environmental conditions.

  3. 3

    If the error persists after power cycling and external checks, the HVR power supply unit is likely defective internally.

  4. 4

    Arrange for the replacement of the Indramat HVR power supply unit.

Browse all codes in this manual (31)
Verified technical data. Last updated: March 2026

Related Faults

Source: Indramat CLM01.3-M Flying Cutoff Control