What is the difference between a fault and a warning on the Giant Elite 3P/3P?

A fault puts the unit into protection and stops normal operation — this page lists 13 of them for the Giant Elite 3P/3P. A warning leaves the unit running; there are 12 warning codes here. Resolve the cause of a fault before restarting; warnings can usually be cleared while the unit runs.

Does this page apply to other Voltronic models?

No — this table was transcribed specifically from the Giant Elite 3P/3P manual. Other Voltronic devices have their own pages; start from the error-code hub to find the one matching the model number on your unit's label.

Where do these codes come from?

Every entry was transcribed from Giant-Elite-3P3P-manual.pdf — Voltronic's official documentation. Each row cites its source manual (and page where printed), so you can verify the wording before acting on it.

Voltronic Giant Elite 3P/3P Error Codes: Causes & Fixes (25 codes)

This is the complete fault table for the Voltronic Giant Elite 3P/3P ups — all 25 codes from the official manual on one page. On this Voltronic device, a fault code means the unit has entered protection and stopped normal operation; a warning leaves it running. The exact indication (LED pattern or display code) is listed per code below.

Last checked against the official manuals on July 27, 2026.

Fault(13)— operation stops until cleared
Warning(12)— unit keeps running · needs attention

Fault codes (13)operation stops until cleared

Firmware incompatibility.

Fault

Fault code 01 shown on the display; the UPS has detected a fault condition: Firmware incompatibility.

CauseFirmware incompatibility.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

NO Boot Loader.

Fault

Fault code 02 shown on the display; the UPS has detected a fault condition: NO Boot Loader.

CauseNO Boot Loader.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

Overload fault.

Fault

Fault code 03 shown on the display; the UPS has detected a fault condition: Overload fault.

CauseOverload fault.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

BUS Soft start timeout.

Fault

Fault code 04 shown on the display; the UPS has detected a fault condition: BUS Soft start timeout.

CauseBUS Soft start timeout.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

BUS voltage is too high.

Fault

Fault code 05 shown on the display; the UPS has detected a fault condition: BUS voltage is too high.

CauseBUS voltage is too high.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

BUS voltage is too low.

Fault

Fault code 06 shown on the display; the UPS has detected a fault condition: BUS voltage is too low.

CauseBUS voltage is too low.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

INV in L1 is short circuited.

Fault

Fault code 07 shown on the display; the UPS has detected a fault condition: INV in L1 is short circuited.

CauseINV in L1 is short circuited.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

INV in L2 is short circuited.

Fault

Fault code 08 shown on the display; the UPS has detected a fault condition: INV in L2 is short circuited.

CauseINV in L2 is short circuited.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

INV in L3 is short circuited.

Fault

Fault code 09 shown on the display; the UPS has detected a fault condition: INV in L3 is short circuited.

CauseINV in L3 is short circuited.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

INV voltage in L1 is too low.

Fault

Fault code 10 shown on the display; the UPS has detected a fault condition: INV voltage in L1 is too low.

CauseINV voltage in L1 is too low.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

INV voltage in L2 is too low.

Fault

Fault code 11 shown on the display; the UPS has detected a fault condition: INV voltage in L2 is too low.

CauseINV voltage in L2 is too low.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

INV voltage in L3 is too low.

Fault

Fault code 12 shown on the display; the UPS has detected a fault condition: INV voltage in L3 is too low.

CauseINV voltage in L3 is too low.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

INV voltage in L1 is too high.

Fault

Fault code 13 shown on the display; the UPS has detected a fault condition: INV voltage in L1 is too high.

CauseINV voltage in L1 is too high.

Recommended fixRestart the unit. If the fault happens again, contact your installer or the repair centre.

Source:Giant-Elite-3P3P-manual.pdf· page 41

Warning codes (12)unit keeps running · needs attention

W01

battery open.

Warning

Warning code 01 flashing on the display: battery open.

Causebattery open.

Recommended fixThe unit keeps operating. 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· page 41

W02

input phase sequence errors.

Warning

Warning code 02 flashing on the display: input phase sequence errors.

Causeinput phase sequence errors.

Recommended fixThe unit keeps operating. 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· page 41

W03

battery over charge.

Warning

Warning code 03 flashing on the display: battery over charge.

Causebattery over charge.

Recommended fixThe unit keeps operating. 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· page 41

W04

battery voltage low.

Warning

Warning code 04 flashing on the display: battery voltage low.

Causebattery voltage low.

Recommended fixThe unit keeps operating. 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· page 41

W05

Over load.

Warning

Warning code 05 flashing on the display: Over load.

CauseOver load.

Recommended fixThe unit keeps operating. 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· page 41

W06

EPO active.

Warning

Warning code 06 flashing on the display: EPO active.

CauseEPO active.

Recommended fixThe unit keeps operating. 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· page 41

W07

Inverter over temperature.

Warning

Warning code 07 flashing on the display: Inverter over temperature.

CauseInverter over temperature.

Recommended fixThe unit keeps operating. 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· page 41

W08

The input frequency is unstable.

Warning

Warning code 08 flashing on the display: The input frequency is unstable.

CauseThe input frequency is unstable.

Recommended fixThe unit keeps operating. 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· page 41

W09

IO expansion card communication failed.

Warning

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

CauseIO expansion card communication failed.

Recommended fixThe unit keeps operating. 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· page 41

W10

EEPEOM communication failed.

Warning

Warning code 10 flashing on the display: EEPEOM communication failed.

CauseEEPEOM communication failed.

Recommended fixThe unit keeps operating. 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· page 41

W13

Maintenance bypass opens.

Warning

Warning code 13 flashing on the display: Maintenance bypass opens.

CauseMaintenance bypass opens.

Recommended fixThe unit keeps operating. 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· page 41

W14

The bypasses are inconsistent.

Warning

Warning code 14 flashing on the display: The bypasses are inconsistent.

CauseThe bypasses are inconsistent.

Recommended fixThe unit keeps operating. 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· page 41

Still seeing a code on your Giant Elite 3P/3P?

Send us the code on your screen and a Voltronic technician will reply with the exact steps for your unit. Support is free for life — a first diagnosis never needs a callout.

Message a technician on WhatsApp Call +971542899793 or use the contact form

Keep troubleshooting

Related devices

Common questions about Giant Elite 3P/3P error codes

What is the difference between a fault and a warning on the Giant Elite 3P/3P?: A fault puts the unit into protection and stops normal operation — this page lists 13 of them for the Giant Elite 3P/3P. A warning leaves the unit running; there are 12 warning codes here. Resolve the cause of a fault before restarting; warnings can usually be cleared while the unit runs.
Does this page apply to other Voltronic models?: No — this table was transcribed specifically from the Giant Elite 3P/3P manual. Other Voltronic devices have their own pages; start from the error-code hub to find the one matching the model number on your unit's label.
Where do these codes come from?: Every entry was transcribed from Giant-Elite-3P3P-manual.pdf — Voltronic's official documentation. Each row cites its source manual (and page where printed), so you can verify the wording before acting on it.

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

How to read the severity labels

Fault codes (13)operation stops until cleared

Firmware incompatibility.

NO Boot Loader.

Overload fault.

BUS Soft start timeout.

BUS voltage is too high.

BUS voltage is too low.

INV in L1 is short circuited.

INV in L2 is short circuited.

INV in L3 is short circuited.

INV voltage in L1 is too low.

INV voltage in L2 is too low.

INV voltage in L3 is too low.

INV voltage in L1 is too high.

Warning codes (12)unit keeps running · needs attention

battery open.

input phase sequence errors.

battery over charge.

battery voltage low.

Over load.

EPO active.

Inverter over temperature.

The input frequency is unstable.

IO expansion card communication failed.

EEPEOM communication failed.

Maintenance bypass opens.

The bypasses are inconsistent.

Still seeing a code on your Giant Elite 3P/3P?

Keep troubleshooting

Related devices

Common questions about Giant Elite 3P/3P error codes