28Fault

Voltronic device error 28

OP Current Sensor fault

Fault — the unit enters fault protection and stops normal operation until the fault is cleared — how it is shown (LED pattern or display code) depends on the model.

The exact meaning depends on your model:

InfiniSolar E 5.5KW

InverterFault

What it means

OP Current Sensor fault — Fault code 28 shown on the display with the fault icon on: OP Current Sensor fault.

Cause: OP Current Sensor fault.

How to fix it

  1. Shut down the inverter completely.
  2. Restart the inverter to see if it's ok.
  3. If error message still remains, please contact your installer.

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

InfiniSolar 2KW/3KW

InverterFault

Also applies to:InfiniSolar 2KWInfiniSolar 3KW

What it means

OP Current Sensor fault — Fault code 28 shown on the display with the fault icon on: OP Current Sensor fault.

Cause: OP Current Sensor fault.

How to fix it

  1. Shut down the inverter completely
  2. Restart the inverter to see if it's ok
  3. If error message still remains, please contact your installer.

Source: InfiniSolar-2KW3KW-manual.pdf, p.49

ESS510

Energy storage systemFault

What it means

OP current sensor fault — Fault code 28 shown on the display with the fault icon on: OP current sensor fault..

Cause: OP current sensor fault.

How to fix it

  1. Shut down the inverter completely.
  2. Restart the inverter to see if it's ok.
  3. If error message still remains, please contact your installer.

Source: ESS510-manual.pdf, p.70

Galleon III 1K-3K

upsFault

Also applies to:Galleon III 1KGalleon III 2KGalleon III 3KWinner Pro 1KVA-3KVAWinner Pro+ 1KWinner Pro+ 2KWinner Pro+ 3KOtima II 800VA-3KVA+1

What it means

Battery voltage too low — Fault code 28 shown on the display; the UPS has detected a fault condition: Battery voltage too low.

Cause: Battery voltage too low.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: Galleon-III-Tower-Rack-1-3K-manual.pdf, p.31 · Winner-Pro_manual.pdf, p.15 · WinnerProPlus-1-3K-Tower-Rack_manual.pdf, p.24 · +2 more official manuals

Frequently asked questions

What does error 28 mean on a Voltronic device?
It depends on the model — 8 devices use code 28. On the InfiniSolar E 5.5KW it means: OP Current Sensor fault. The card for each model on this page gives its exact meaning and fix.
Is error 28 a fault or a warning?
28 is a fault code: the unit enters protection and stops normal operation until it is cleared.
How do I clear or fix error 28?
Shut down the inverter completely. Restart the inverter to see if it's ok. 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 2KW/3KW

All InfiniSolar 2KW/3KW codes

Other codes on the ESS510

All ESS510 codes

Other codes on the Galleon III 1K-3K

All Galleon III 1K-3K codes All Winner Pro codes All Winner Pro+ 1K-3K codes All Otima II codes All Otima II Tower codes

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