W12Warning

Voltronic inverter error W12

Warning — the red LED flashes and the inverter keeps running. Deal with it before it escalates.

Axpert 3KP/5KP 24V

InverterWarning

Also applies to:Axpert 3KP 24VAxpert 5KP 24V

What it means

Solar charger stops due to low battery — Warning code 12 flashing on the display: Solar charger stops due to low battery..

Cause: Solar charger stops due to low battery.

How to fix it

  1. The unit keeps operating.
  2. Clear the condition shown and the warning resets automatically; if it persists, contact your installer or the repair centre.

Source: Voltronic manual, p.27

Models that show W12

Frequently asked questions

What does error W12 mean on a Voltronic inverter?

It depends on the model — 8 devices use code W12. On the Axpert 3KP/5KP 24V it means: Solar charger stops due to low battery. The card for each model on this page gives its exact meaning and fix.

Is error W12 a fault or a warning?

W12 is a warning: the red LED flashes and the unit keeps running. Fix the underlying condition before it escalates.

How do I clear or fix error W12?

The unit keeps operating. Clear the condition shown and the warning resets automatically; if it persists, contact your installer or the repair centre. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the InfiniSolar TX-PA 30KW

W12 is in the "Warning" class on the InfiniSolar TX-PA 30KW: 21 of the 76 codes documented for it.

All InfiniSolar TX-PA 30KW codes

Compiled from official Voltronic user manuals. Always consult your device manual and a qualified technician before performing repairs.