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critical Yaskawa

Error Code E03

Undervoltage Fault occurs when the input voltage is below acceptable limits.

How to Fix It

Check that the input voltage supply meets the minimum voltage requirements for the drive, verify utility voltage stability, and inspect all power connections. Refer to the Yaskawa HV600 Drive Programming Manual for additional guidance.

Source: page 1 of the official manual

From the manual

Manual page 1 — Yaskawa error E03

This error code appears in:

Yaskawa HV600 Variable Frequency Drive