Control Power Supply Undervoltage

What does UV2 mean?

An undervoltage condition detected in the Drive's control circuit while it is running. This can be caused by an external load connected to the drive pulling down its internal power supplies, or a fault within the control board itself, indicating a problem with the internal 24VDC or 15VDC supply.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Repair or replace the Power PCB/Gate Drive PCB if the fault persists after removing external loads, indicating an internal hardware issue.