5 HP VFD E03 Fault When Starting 220V Motor

Hi all,
I installed a GK3000-2S00375 HP VFD to run a hydraulic unit. I think I’ve set it up correctly, but whenever I try to start the motor, I get an E03 error. I checked the voltages and saw 230V across all three output phases. I also monitored the current draw during startup, but it barely moves before the E03 trips. The motor doesn’t even try to spin. Any ideas?

Thatcher wrote:Hey Thatcher,
E03 is a current overload error. Can you share the nameplate info from your VFD and the motor? We need to confirm they’re properly matched. Also, have you tried running the VFD without the motor connected to see if it ramps up to 50/60 Hz normally?

ATO wrote:
Thanks! I double-checked and the motor is wired for 220V (it’s a dual-voltage unit). I also reset the VFD and programmed it using the quick setup sheet. Still getting E03 right away—no motion or startup noise from the motor. Amps never spike, either.

Thatcher wrote:Okay, next step: disconnect the motor and try running the VFD with no load. See if it reaches 60 Hz. If it does, measure the voltages at U-V, V-W, and W-U—they should each read ~220V.
If that's all good, the motor wiring or the motor itself may be the issue.

Thatcher, just chiming in—E03 with no current spike could also mean the VFD’s seeing an abnormal load condition immediately, possibly a short in the motor windings or incorrect wiring. I’d megger test the motor if you have the tool. Also, check if the motor’s star/delta links are properly configured for 220V.

Vinod wrote:Agree with @Vinod. Had a similar case where the motor was accidentally still wired for 440V while fed by 220V—it wouldn't start and threw overload faults. Make sure all six terminals are properly strapped for low-voltage mode.

Thanks everyone! I’ll disconnect the motor and run the VFD no-load as suggested. Also checking motor winding configuration again.