Siemens MICROMASTER 420 Error A0912: Vdc-min controller active

Siemens MICROMASTER 420 inverter · taken from the manufacturer’s manual, pages cited

Warning codeA0912

The DC-link voltage has fallen below the minimum level set by the controller. The manual lists no action for this code.

Model
Siemens MICROMASTER 420
Display shows
Vdc-min controller active (A0912)
Type
Warning code
Source
Manual p. 73

What A0912 means

Vdc-min controller active p. 73

Common causes

  • Vdc min controller will be activated if DC-link voltage (r0026) falls below minimum level (P2172) p. 73

If A0912 is still not resolved

  • Contact your service dealer for assistance. p. 73
    “Vdc min controller will be activated if DC-link voltage (r0026) falls below minimum level (P2172)”
Open the manual at page 73 All MICROMASTER 420 error codes Manual details & download

This page summarises what the manufacturer’s manual says about A0912; 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.