Cause : Earth fault comes when there is current from the output phases to ground, either in the cable between the frequency converter and the motor or in the motor itself.

Alarm 14 on a Danfoss VFD indicates a ground fault, also known as an earth fault. This means there's a current leakage from the output phase of the drive to the ground (earth) somewhere in the system. This can potentially damage the drive and motor, so it's important to address the issue before restarting operation.

Follow these steps to correct the fault:

1. Power Off and Isolate: Turn off the power to the drive and isolate it from the power source before any physical inspection.
2. Visual Inspection: Carefully inspect the motor cable for any visible signs of damage or wear. Look for cuts, abrasions, or areas where the insulation might be compromised.
3. Check for ground faults in the motor by measuring the resistance to ground of the motor leads and the motor with a megohmmeter.
4. Perform current sensor test.