Ground Protection

What does E14. mean?

This fault is detected when a ground fault occurs between the inverter output unit and the motor, typically at power-on. The inverter's ground protection function activates to prevent electrical damage and ensure safety. This indicates an insulation breakdown or improper wiring in the motor circuit.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Disconnect the motor from the inverter and check the inverter's output wiring for internal ground faults.

2. 4

   Examine the main circuit components for any faults (refer to Section 11 Maintenance and Inspection).