For other common fault codes, please refer to the official user manual or Danfoss online support resources.
Go to and Parameter 15-60 to 15-63 (Option Ident) . Danfoss Vlt Error Code 2563
If you are staring at a VFD displaying (or simply "AL 2563"), your drive is essentially reporting a fatal handshake failure between the control card and the power card. This is not typically a field-repairable hardware issue, but there are specific diagnostic steps you must take before declaring the drive dead. For other common fault codes, please refer to