13

Over Current

Danfoss · VLT HVAC Drive FC 102

What does 13 mean?

The motor current has exceeded the drive's safe operating limits. This is a critical fault indicating either a sudden load increase, a motor issue (e.g., winding fault), or a short circuit in the motor cables. This can lead to rapid component damage and cause the drive to trip.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Verify motor parameters and current limits in the drive are correctly set to match the motor.

  2. 4

    Review acceleration/deceleration ramps for overly aggressive settings that could cause current spikes.

Source: Danfoss VLT HVAC Drive FC 102
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