Fault code 01 shown on the display with the fault icon on: Fan locked.
CauseFan fault.
Recommended fixReplace the fan.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Voltronic InfiniSolar V Error Codes: Causes & Fixes (20 codes)
This is the complete fault table for the Voltronic InfiniSolar V Inverter family — 20 codes shared by 5 model numbers, transcribed from the official manual. On Voltronic units, a fault code means the unit has cut its output and the red LED stays solid; a warning flashes the red LED while the unit keeps running.
Also coversInfiniSolar V 1KWInfiniSolar V 2KWInfiniSolar V 3KWInfiniSolar V 4KWInfiniSolar V 5KW
Last checked against the official manuals on July 27, 2026.
How to read the severity labels
- Fault(16)— output stops · red LED solid
- Warning(4)— unit keeps running · red LED flashing
Fault codes (16)output stops · red LED solid
Fault code 02 shown on the display with the fault icon on: Over temperature.
CauseInternal temperature of inverter component is over 100°C.
Recommended fixReturn to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 03 shown on the display with the fault icon on: Battery voltage is too high.
CauseBattery is over-charged.
Recommended fixReturn to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 04 shown on the display with the fault icon on: 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:InfiniSolar-V-1KW-5KW-manual.pdf· page 28
Fault code 05 shown on the display with the fault icon on: Output short circuited.
CauseOutput short circuited.
Recommended fixCheck if wiring is connected well and remove abnormal load.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 06 shown on the display with the fault icon on: Output voltage abnormal.
CauseOutput abnormal (Inverter voltage below than 190Vac or is higher than 260Vac).
Recommended fix1. Reduce the connected load. 2. Return to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 07 shown on the display with the fault icon on: Over load time out.
CauseOverload error. The inverter is overload 110% and time is up.
Recommended fixReduce the connected load by switching off some equipment.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 08 shown on the display with the fault icon on: Bus voltage is too high.
CauseInternal components failed.
Recommended fixReturn to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 09 shown on the display with the fault icon on: Bus soft start failed.
CauseInternal components failed.
Recommended fixReturn to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 51 shown on the display with the fault icon on: Over current or surge.
CauseOver current or surge.
Recommended fixRestart the unit, if the error happens again, please return to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 52 shown on the display with the fault icon on: Bus voltage is too low.
CauseBus voltage is too low.
Recommended fixIf the battery is connected well, please return to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 53 shown on the display with the fault icon on: Inverter soft start failed.
CauseInternal components failed.
Recommended fixReturn to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 55 shown on the display with the fault icon on: Over DC offset in AC output.
CauseOutput voltage is unbalanced.
Recommended fixIf the battery is connected well, please return to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 56 shown on the display with the fault icon on: Battery disconnected.
CauseBattery is not connected well or fuse is burnt.
Recommended fixIf the battery is connected well, please return to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 57 shown on the display with the fault icon on: Current sensor failed.
CauseInternal components failed.
Recommended fixReturn to repair center.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Fault code 58 shown on the display with the fault icon on: 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:InfiniSolar-V-1KW-5KW-manual.pdf· page 28InfiniSolar-V-1KW-5KW-manual.pdf· page 30
Warning codes (4)unit keeps running · red LED flashing
Warning code 01 flashing on the display: Fan locked.
CauseFan locked.
Recommended fixReplace the fan.
Source:InfiniSolar-V-1KW-5KW-manual.pdf· page 28
Warning code 03 flashing on the display: Battery over charged.
CauseBattery over charged.
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:InfiniSolar-V-1KW-5KW-manual.pdf· page 28
Warning code 04 flashing on the display: Low battery.
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:InfiniSolar-V-1KW-5KW-manual.pdf· page 28
Warning code 07 flashing on the display: Overload.
CauseOverload.
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:InfiniSolar-V-1KW-5KW-manual.pdf· page 28
Still seeing a code on your InfiniSolar V?
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.
Keep troubleshooting
- All Voltronic error codesSearch every device and code in the database
- Voltronic & Axpert Error Codes by Model: Fault + Warning Code LookupThe step-by-step troubleshooting guide
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Common questions about InfiniSolar V error codes
- What is the difference between a fault and a warning on the InfiniSolar V?
- A fault cuts the unit's output and the red LED stays solid — this page lists 16 of them for the InfiniSolar V. A warning only flashes the red LED and the unit keeps running; there are 4 warning codes here. Resolve the cause of a fault before restarting; warnings can usually be cleared while the unit runs.
- Which model numbers does this page cover?
- The InfiniSolar V shares its firmware and fault table with 4 other model numbers: InfiniSolar V 1KW, InfiniSolar V 2KW, InfiniSolar V 3KW, InfiniSolar V 4KW, InfiniSolar V 5KW. If your unit is any of these, every code on this page applies to it.
- Where do these codes come from?
- Every entry was transcribed from InfiniSolar-V-1KW-5KW-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.