What is the difference between a fault and a warning on the Galleon One 5KL 48V?

A fault puts the unit into protection and stops normal operation — this page lists 27 of them for the Galleon One 5KL 48V. A warning leaves the unit running; there are 9 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 Galleon One 5KL 48V 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 GalleonOne-5KL-48V-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 Galleon One 5KL 48V Error Codes: Causes & Fixes (36 codes)

This is the complete fault table for the Voltronic Galleon One 5KL 48V ups — all 36 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(27)— operation stops until cleared
Warning(9)— unit keeps running · needs attention

Fault codes (27)operation stops until cleared

Fan is locked when inverter is off.

Fault

Fault code 01 shown on the display; the UPS has detected a fault condition: Fan is locked when inverter is off..

CauseFan fault.

Recommended fixReplace the fan.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Over temperature.

Fault

Fault code 02 shown on the display; the UPS has detected a fault condition: Over temperature.

CauseInternal temperature of UPS component is over 100°C.

Recommended fixCheck whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Battery voltage is too high.

Fault

Fault code 03 shown on the display; the UPS has detected a fault condition: Battery voltage is too high.

CauseBattery is over-charged.

Recommended fixReturn to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Battery voltage is too low.

Fault

Fault code 04 shown on the display; the UPS has detected a fault condition: Battery voltage is too low.

CauseBattery voltage is too low.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 22

Output short circuited or over temperature is detected by internal converter components.

Fault

Fault code 05 shown on the display; the UPS has detected a fault condition: Output short circuited or over temperature is detected by internal converter components..

CauseOutput short circuited.

Recommended fixCheck if wiring is connected well and remove abnormal load.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Output voltage is too high.

Fault

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

CauseOutput abnormal (Inverter voltage below than 190Vac or is higher than 260Vac).

Recommended fix1. Reduce the connected load. 2. Return to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Overload time out.

Fault

Fault code 07 shown on the display; the UPS has detected a fault condition: Overload time out.

CauseOverload error. The UPS is overload 110% and time is up.

Recommended fixReduce the connected load by switching off some equipment.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Bus voltage is too high.

Fault

Fault code 08 shown on the display; the UPS has detected a fault condition: Bus voltage is too high.

CauseInternal components failed.

Recommended fixReturn to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Bus soft start failed.

Fault

Fault code 09 shown on the display; the UPS has detected a fault condition: Bus soft start failed.

CauseInternal components failed.

Recommended fixReturn to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

PFC over current.

Fault

Fault code 50 shown on the display; the UPS has detected a fault condition: PFC over current.

CausePFC over current or surge.

Recommended fixRestart the unit, if the error happens again, please return to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

OP over current.

Fault

Fault code 51 shown on the display; the UPS has detected a fault condition: OP over current.

CauseOP over current or surge.

Recommended fixIf the battery is connected well, please return to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Bus voltage is too low.

Fault

Fault code 52 shown on the display; the UPS has detected a fault condition: Bus voltage is too low.

CauseBus voltage is too low.

Recommended fixIf the battery is connected well, please return to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Inverter soft start failed.

Fault

Fault code 53 shown on the display; the UPS has detected a fault condition: Inverter soft start failed.

CauseInternal components failed.

Recommended fixReturn to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Over DC voltage in AC output.

Fault

Fault code 55 shown on the display; the UPS has detected a fault condition: Over DC voltage in AC output.

CauseOutput voltage is unbalanced.

Recommended fixIf the battery is connected well, please return to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Battery is not connected.

Fault

Fault code 56 shown on the display; the UPS has detected a fault condition: Battery is not connected.

CauseBattery is not connected well or fuse is burnt.

Recommended fixIf the battery is connected well, please return to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Current sensor failed.

Fault

Fault code 57 shown on the display; the UPS has detected a fault condition: Current sensor failed.

CauseInternal components failed.

Recommended fixReturn to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Output voltage is too low.

Fault

Fault code 58 shown on the display; the UPS has detected a fault condition: Output voltage is too low.

CauseOutput abnormal (Inverter voltage below than 190Vac or is higher than 260Vac).

Recommended fix1. Reduce the connected load. 2. Return to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22GalleonOne-5KL-48V-manual.pdf· page 28

Power feedback protection.

Fault

Fault code 60 shown on the display; the UPS has detected a fault condition: Power feedback protection.

CausePower feedback protection.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

Firmware version inconsistent.

Fault

Fault code 71 shown on the display; the UPS has detected a fault condition: Firmware version inconsistent.

CauseFirmware version inconsistent.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

Current sharing fault.

Fault

Fault code 72 shown on the display; the UPS has detected a fault condition: Current sharing fault.

CauseCurrent sharing fault.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

CAN fault.

Fault

Fault code 80 shown on the display; the UPS has detected a fault condition: CAN fault.

CauseCAN fault.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

Host loss.

Fault

Fault code 81 shown on the display; the UPS has detected a fault condition: Host loss.

CauseHost loss.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

Synchronization loss.

Fault

Fault code 82 shown on the display; the UPS has detected a fault condition: Synchronization loss.

CauseSynchronization loss.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

Battery voltage detected different.

Fault

Fault code 83 shown on the display; the UPS has detected a fault condition: Battery voltage detected different.

CauseBattery voltage detected different.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

AC input voltage and frequency detected different.

Fault

Fault code 84 shown on the display; the UPS has detected a fault condition: AC input voltage and frequency detected different.

CauseAC input voltage and frequency detected different.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

AC output current unbalance.

Fault

Fault code 85 shown on the display; the UPS has detected a fault condition: AC output current unbalance.

CauseAC output current unbalance.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

AC output mode setting is different.

Fault

Fault code 86 shown on the display; the UPS has detected a fault condition: AC output mode setting is different.

CauseAC output mode setting is different.

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

Source:GalleonOne-5KL-48V-manual.pdf· page 41

Warning codes (9)unit keeps running · needs attention

W01

Fan is locked when UPS is on.

Warning

Warning code 01 flashing on the display: Fan is locked when UPS is on.. Audible alarm: beep three times every second.

CauseFan is locked when UPS is on.

Recommended fixReplace the fan.

Source:GalleonOne-5KL-48V-manual.pdf· page 22

W02

Over temperature.

Warning

Warning code 02 flashing on the display: Over temperature.

CauseOver temperature.

Recommended fixCheck whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:GalleonOne-5KL-48V-manual.pdf· page 22

W03

Battery is over-charged.

Warning

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

CauseBattery is over-charged.

Recommended fixReturn to repair center.

Source:GalleonOne-5KL-48V-manual.pdf· page 22

W04

Low battery.

Warning

Warning code 04 flashing on the display: Low battery. Audible alarm: beep once every second.

CauseLow battery.

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:GalleonOne-5KL-48V-manual.pdf· page 22

W07

Overload.

Warning

Warning code 07 flashing on the display: Overload. Audible alarm: beep once every 0.5 second.

CauseOverload.

Recommended fixReduce the connected load by switching off some equipment.

Source:GalleonOne-5KL-48V-manual.pdf· page 22

W10

Output power derating.

Warning

Warning code 10 flashing on the display: Output power derating. Audible alarm: beep twice every 3 seconds.

CauseOutput power derating.

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:GalleonOne-5KL-48V-manual.pdf· page 22

W12

EPO activated.

Warning

Warning code 12 flashing on the display: EPO activated.

CauseEPO activated.

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:GalleonOne-5KL-48V-manual.pdf· page 22

W13

Manual Bypass activated.

Warning

Warning code 13 flashing on the display: Manual Bypass activated.

CauseManual Bypass activated.

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:GalleonOne-5KL-48V-manual.pdf· page 22

W17

Phase Lock failed.

Warning

Warning code 17 flashing on the display: Phase Lock failed.

CausePhase Lock 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:GalleonOne-5KL-48V-manual.pdf· page 22

Still seeing a code on your Galleon One 5KL 48V?

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 Galleon One 5KL 48V error codes

What is the difference between a fault and a warning on the Galleon One 5KL 48V?: A fault puts the unit into protection and stops normal operation — this page lists 27 of them for the Galleon One 5KL 48V. A warning leaves the unit running; there are 9 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 Galleon One 5KL 48V 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 GalleonOne-5KL-48V-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 (27)operation stops until cleared

Fan is locked when inverter is off.

Over temperature.

Battery voltage is too high.

Battery voltage is too low.

Output short circuited or over temperature is detected by internal converter components.

Output voltage is too high.

Overload time out.

Bus voltage is too high.

Bus soft start failed.

PFC over current.

OP over current.

Bus voltage is too low.

Inverter soft start failed.

Over DC voltage in AC output.

Battery is not connected.

Current sensor failed.

Output voltage is too low.

Power feedback protection.

Firmware version inconsistent.

Current sharing fault.

CAN fault.

Host loss.

Synchronization loss.

Battery voltage detected different.

AC input voltage and frequency detected different.

AC output current unbalance.

AC output mode setting is different.

Warning codes (9)unit keeps running · needs attention

Fan is locked when UPS is on.

Over temperature.

Battery is over-charged.

Low battery.

Overload.

Output power derating.

EPO activated.

Manual Bypass activated.

Phase Lock failed.

Still seeing a code on your Galleon One 5KL 48V?

Keep troubleshooting

Related devices

Common questions about Galleon One 5KL 48V error codes