W09Warning

Voltronic inverter error W09

Line phase loss

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

The exact meaning depends on your model:

InfiniSolar WP LV 12KW Premium

InverterWarning

Also applies to:InfiniSolar 10KWInfiniSolar 15KW

What it means

Line phase loss — Warning code 09 flashing on the display: Line phase loss.

Cause: The phase of grid is not in right sequence.

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: InfiniSolar-WP-LV-12KW-Premium-manual.pdf, p.51 · InfiniSolar-10KW-manual-20191126.pdf, p.49 · InfiniSolar-15K-manual-20200313.pdf, p.50

InfiniSolar TX-PA 30KW

InverterWarning

What it means

LineWaveLoss — Warning code 09 flashing on the display: LineWaveLoss.

Cause: The waveform of grid is not suitable for inverter.

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: InfiniSolar-TX-PA_manual.pdf, p.49

Galleon II 6K-10K

upsWarning

Also applies to:Galleon II 6KGalleon II 10KGiant Elite 1P/1P 6K-10K

What it means

Overload — Warning code 09 flashing on the display: Overload.

Cause: Overload.

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: GalleonII-6-10K-Tower-RT-manual.pdf, p.29 · Giant-Elite-1P-1P_manual.pdf, p.26

Galleon X9 6K-10K RT

upsWarning

Also applies to:Galleon X9 6K RTGalleon X9 10K RT

What it means

Over load — Warning code 09 flashing on the display: Over load.

Cause: The load is too heavy.

How to fix it

Remove excess loads from UPS output.

Source: Galleon-X9-6-10K-RT_manual.pdf, p.27

Giant Elite 3P/3P

upsWarning

Also applies to:Giant Elite 3P/3P 10K-40KVA

What it means

IO expansion card communication failed — Warning code 09 flashing on the display: IO expansion card communication failed.

Cause: IO expansion card communication failed.

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: Giant-Elite-3P3P-manual.pdf, p.41

Frequently asked questions

What does error W09 mean on a Voltronic inverter?
It depends on the model — 8 devices use code W09. On the InfiniSolar WP LV 12KW Premium it means: Line phase loss. The card for each model on this page gives its exact meaning and fix.
Is error W09 a fault or a warning?
W09 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 W09?
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 WP LV 12KW Premium

All InfiniSolar WP LV 12KW Premium codes All InfiniSolar 10KW codes All InfiniSolar 15KW codes

Other codes on the InfiniSolar TX-PA 30KW

All InfiniSolar TX-PA 30KW codes

Other codes on the Galleon II 6K-10K

All Galleon II 6K-10K codes All Giant Elite 1P/1P codes

Other codes on the Galleon X9 6K-10K RT

All Galleon X9 6K-10K RT codes

Other codes on the Giant Elite 3P/3P

All Giant Elite 3P/3P codes

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