Zeror.ai Error Codes Siemens A00921

Siemens A00921

Brand: SiemensModel: SINAMICS G120Error code: A00921

What the Fault Means

Alarm: AO parameters not set properly.

Likely causes

  • Parameter settings for output identical
  • Parameter settings for input identical
  • Parameter settings for output do not correspond to AO type

Solution and Safe First Checks

  1. Parameter settings for output identical
  2. Parameter settings for input identical
  3. Parameter settings for output do not correspond to AO type

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

Related Siemens error codes

Source: the Zeror.ai industrial fault database and Siemens technical documentation. This page is for information; on critical systems follow the manufacturer's manual and authorised service.

Siemens A00921 · Zeror.ai