W20Warning

Voltronic inverter error W20

Over temperature

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

The exact meaning depends on your model:

InfiniSolar E 5.5KW

InverterWarning

What it means

Over temperature — Warning code 20 flashing on the display: Over temperature.

Cause: Over temperature.

How to fix it

  1. Restart the unit again.
  2. If problem still exists, please contact your installer.
  3. Recharge or replace the battery Try to reduce the applied load Re-connect the battery Check the ventilation around the unit Try to reduce the load Check if fans run normally.

Source: InfiniSolarE-5.5KW-manual.pdf, p.45

InfiniSolar TX-PA 30KW

InverterWarning

What it means

Inv1TempOver — Warning code 20 flashing on the display: Inv1TempOver.

Cause: The temperature is too high inside.

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

DC Converter 3KW

InverterWarning

What it means

Battery voltage is too high — Warning code 20 flashing on the display: Battery voltage is too high..

Cause: Battery voltage is too high.

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: DC-converter-3KW-manual.pdf, p.20

ESS510

Energy storage systemWarning

What it means

Over temperature — Warning code 20 flashing on the display: Over temperature..

Cause: Over temperature.

How to fix it

  1. Check the ventilation around the unit and try to reduce connected load.
  2. Check if fans run normally.

Source: ESS510-manual.pdf, p.71

Frequently asked questions

What does error W20 mean on a Voltronic inverter?
It depends on the model — 4 devices use code W20. On the InfiniSolar E 5.5KW it means: Over temperature. The card for each model on this page gives its exact meaning and fix.
Is error W20 a fault or a warning?
W20 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 W20?
Restart the unit again. If problem still exists, please contact your installer. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the InfiniSolar E 5.5KW

All InfiniSolar E 5.5KW codes

Other codes on the InfiniSolar TX-PA 30KW

All InfiniSolar TX-PA 30KW codes

Other codes on the DC Converter 3KW

All DC Converter 3KW codes

Other codes on the ESS510

All ESS510 codes

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