voF

Output Voltage Detection Fault

Yaskawa · iQpump1000 AC Drive

What does voF mean?

A problem is detected with the voltage on the output side of the drive. This indicates damaged hardware, specifically an internal drive module MC / FAN overheat protection circuit board due to abnormal ambient operating power or temperature.

Common Causes

  • Hardware is damaged within the drive
  • Internal drive module MC / FAN overheat protection circuit board failure due to abnormal ambient operating power
  • Abnormal ambient temperature

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Lower the ambient temperature around the drive

  2. 2

    Replace the control board or the entire drive

Browse all codes in this manual (45)
Verified technical data. Last updated: March 2026

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