Zeror.ai Error Codes Siemens F30665

Siemens F30665

Brand: SiemensModel: SINAMICS G120 CU250S2Error code: F30665

What the Fault Means

Fault: SI P2: System is defective

Likely causes

  • For a Power Module with "STO via terminals at the Power Module" (STO_A/STO_B), these terminals are active
  • fault in the actual booting/operation.
  • defect before the last time that the system booted.

Solution and Safe First Checks

  1. carry out a POWER ON (switch-off/switch-on).
  2. upgrade firmware to later version.
  3. contact Technical Support.
  4. de-activate terminals STO_A/STO_B on the Power Module (set both DIP-switches to "OFF") or enable the "STO via
  5. ensure that the Control Unit is connected to the Power Module.
  6. deselect the "STO via terminals at the Power Module" function.

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.