Fault code 01 shown on the display with the fault icon on: Fan locked.
CauseFan fault.
Recommended fixReplace the fan.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Voltronic InfiniSolar V II 1.5KW Error Codes: Causes & Fixes (24 codes)
This is the complete fault table for the Voltronic InfiniSolar V II 1.5KW Inverter — all 24 codes from the official manual on one page. 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.
Last checked against the official manuals on July 27, 2026.
How to read the severity labels
- Fault(18)— output stops · red LED solid
- Warning(6)— unit keeps running · red LED flashing
Fault codes (18)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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
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:InfiniSolarVII_1.5KW_manual.pdf· page 27
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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Fault code 10 shown on the display with the fault icon on: PV current over.
CauseSurge.
Recommended fixRestart the unit, if the error happens again, please return to repair center.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Fault code 11 shown on the display with the fault icon on: PV voltage over.
CausePV voltage is over limitation.
Recommended fixReduce PV serial amount.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Fault code 12 shown on the display with the fault icon on: Charge Current over.
CauseDC over Current or surge.
Recommended fixReduce PV serial amount.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Fault code 51 shown on the display with the fault icon on: Over current or surge.
CauseOver current or surge.
Recommended fixReduce PV serial amount.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Fault code 52 shown on the display with the fault icon on: Bus voltage is too low.
CauseBus voltage is too low.
Recommended fixReduce PV serial amount.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Fault code 55 shown on the display with the fault icon on: Over DC offset in AC output.
CauseOutput voltage is unbalanced.
Recommended fixReduce PV serial amount.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Fault code 57 shown on the display with the fault icon on: Current sensor failed.
CauseInternal components failed.
Recommended fixReturn to repair center.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
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:InfiniSolarVII_1.5KW_manual.pdf· page 27InfiniSolarVII_1.5KW_manual.pdf· page 29
Warning codes (6)unit keeps running · red LED flashing
Warning code 01 flashing on the display: Fan locked.
CauseFan locked.
Recommended fixReplace the fan.
Source:InfiniSolarVII_1.5KW_manual.pdf· page 26
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:InfiniSolarVII_1.5KW_manual.pdf· page 26
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:InfiniSolarVII_1.5KW_manual.pdf· page 26
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:InfiniSolarVII_1.5KW_manual.pdf· page 26
Warning code 10 flashing on the display: Inverter power derating.
CauseInverter 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:InfiniSolarVII_1.5KW_manual.pdf· page 26
Warning code 15 flashing on the display: PV energy is low..
CausePV energy is 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:InfiniSolarVII_1.5KW_manual.pdf· page 26
Still seeing a code on your InfiniSolar V II 1.5KW?
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 II 1.5KW error codes
- What is the difference between a fault and a warning on the InfiniSolar V II 1.5KW?
- A fault cuts the unit's output and the red LED stays solid — this page lists 18 of them for the InfiniSolar V II 1.5KW. A warning only flashes the red LED and the unit keeps running; there are 6 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 InfiniSolar V II 1.5KW 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 InfiniSolarVII_1.5KW_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.