Earth (ground) fault

What does #14 mean?

An earth (ground) fault has been detected, indicating an unintended current path from a phase conductor to the ground. This usually points to damaged insulation in the motor windings or associated cabling, posing a significant safety hazard and a risk of severe damage to the drive or compressor components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the measured insulation resistance is less than 500 KΩ, the fault is likely in the compressor; replace the compressor unit.

2. 4

   If the measured insulation resistance is greater than 500 KΩ, the fault is likely within the drive or its internal wiring; replace the drive unit.