Cause : Line voltage too high at power on comes when the RMS line supply voltage Vrms was so high when powering up that controlled operation is not possible without exceeding the permissible maximum voltage in the DC link (p0280).

- check the line supply voltage
- check the maximum DC link voltage and if required, increase (p0280).
- check the line supply voltage and compare with the actual line supply voltage (p0210).
- check whether the power unit is dimensioned for the line supply voltage actually being used.
See also: p0210 (Drive unit line supply voltage), p0280 (DC link voltage maximum steady-state)