Fault code

INVT GD270 ETH1 To-ground short-circuit fault 1

Diagnostic context

What ETH1 means on INVT GD270

ETH1 is a to-ground short-circuit fault. The manufacturer also lists a current-detection circuit fault and a large mismatch between motor power setup and VFD power.

Operating context: Check that the motor wiring is normal and verify the motor parameters. The manufacturer troubleshooting table also lists the Hall component and main control board as items to replace when required.

This diagnostic context is an editorial explanation. The possible causes and recommended checks below are the verified manufacturer troubleshooting content.

Possible causes

  • VFD output is short connected to the ground.
  • There is a fault in the current detection circuit.
  • Actual motor power setup deviates sharply from the VFD power..

Recommended checks and actions

  • Check whether the motor wiring is normal.
  • Replace the hall component.
  • Replace the main control board.
  • Reset the motor parameters properly.

Technical source

INVT GD270 Manual EN - Fault ETH1 — page 280