W03Warning

Voltronic inverter error W03

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

Axpert MAX II TWIN

InverterWarning

Also applies to:Axpert MAX II TWIN 8KWAxpert MAX II TWIN 11KWAxpert MAX II TWIN 12KWAxpert MAX II Duplex 8KW+37

What it means

Battery is over-charged — Warning code 03 flashing on the display: Battery is over-charged. Audible alarm: beep once every second.

Cause: Battery is over-charged.

How to fix it

Return to repair center.

Source: Voltronic manual, p.48

Models that show W03

Frequently asked questions

What does error W03 mean on a Voltronic inverter?

It depends on the model — 35 devices use code W03. On the Axpert MAX II TWIN it means: Battery is over-charged. The card for each model on this page gives its exact meaning and fix.

Is error W03 a fault or a warning?

W03 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 W03?

Return to repair center. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the InfiniSolar TX-PA 30KW

W03 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.