Zeror.ai Error Codes Siemens A30042

Siemens A30042

Brand: SiemensModel: SINAMICS G120 CU250S2Error code: A30042

What the Fault Means

Alarm: Power unit: Fan has reached the maximum operating hours

Likely causes

  • The maximum operating time of at least one fan will soon be reached, or has already been exceeded
  • Alarm value (r2124, interpret binary): Bit 0: heat sink fan will reach the maximum operating time in 500 hours
  • Bit 1: heat sink fan has exceeded the maximum operating time
  • Bit 8: internal device fan will reach the maximum operating time in 500 hours

Solution and Safe First Checks

  1. replace the fan.
  2. reset the operating hours counter (p0251, p0254).

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 A30042 · Zeror.ai