Siemens CU240S Error F00003: Undervoltage

Siemens CU240S · taken from the manufacturer’s manual, pages cited

Fault codeF00003

The Siemens CU240S detected an undervoltage condition due to a failed main supply or shock load exceeding limits. The manual's first action is: “Quit fault eg. via D12”

Model
Siemens CU240S
Display shows
Undervoltage (F00003)
Type
Fault code
Source
Manual p. 379

What F00003 means

Undervoltage p. 379

Common causes

  • OFF 2 p. 379
  • Main supply failed. p. 379
  • Shock load outside specified limits. p. 379
  • Check Supply voltage (p0210). p. 379
  • r0948 = 0: HW reported p. 379
  • r0948 = 1 or 2: SW reported p. 379

What to do

  1. Quit fault eg. via D12 p. 379

If F00003 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Siemens service.

Open the manual at page 379 All CU240S error codes Manual details & download

This page summarises what the manufacturer’s manual says about F00003; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.