What is the difference between a fault and a warning on the InfiniSolar WP LV 12KW Premium?

A fault cuts the unit's output and the red LED stays solid — this page lists 16 of them for the InfiniSolar WP LV 12KW Premium. A warning only flashes the red LED and the unit keeps running; there are 19 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 WP LV 12KW Premium 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 InfiniSolar-WP-LV-12KW-Premium-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 InfiniSolar WP LV 12KW Premium Error Codes: Full List & Fixes

Fault codes (16)output stops · red LED solid

Bus voltage over.

Fault

Fault code 01 shown on the display with the fault icon on: Bus voltage over.

CauseBus voltage over.

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

Source:page 52

BUS voltage under.

Fault

Fault code 02 shown on the display with the fault icon on: BUS voltage under.

CauseBUS voltage under.

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

Source:page 52

BUS soft start time out.

Fault

Fault code 03 shown on the display with the fault icon on: BUS soft start time out.

CauseBUS soft start time out.

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

Source:page 52

INV soft start time out.

Fault

Fault code 04 shown on the display with the fault icon on: INV soft start time out.

CauseINV soft start time out.

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

Source:page 52

INV over current.

Fault

Fault code 05 shown on the display with the fault icon on: INV over current.

CauseINV over current.

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

Source:page 52

Over temperature.

Fault

Fault code 06 shown on the display with the fault icon on: Over temperature.

CauseOver temperature.

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

Source:page 52

Relay fault.

Fault

Fault code 07 shown on the display with the fault icon on: Relay fault.

CauseRelay fault.

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

Source:page 52

CT sensor fault.

Fault

Fault code 08 shown on the display with the fault icon on: CT sensor fault.

CauseCT sensor fault.

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

Source:page 52

power Solar input abnormal.

Fault

Fault code 09 shown on the display with the fault icon on: power Solar input abnormal.

Causepower Solar input abnormal.

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

Source:page 52

Solar over current.

Fault

Fault code 11 shown on the display with the fault icon on: Solar over current.

CauseSolar over current.

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

Source:page 52

GFCI fault.

Fault

Fault code 12 shown on the display with the fault icon on: GFCI fault.

CauseGFCI fault.

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

Source:page 52

PV ISO fault.

Fault

Fault code 13 shown on the display with the fault icon on: PV ISO fault.

CausePV ISO fault.

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

Source:page 52

INV DC current over.

Fault

Fault code 14 shown on the display with the fault icon on: INV DC current over.

CauseINV DC current over.

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

Source:page 52

Arc fault detected.

Fault

Fault code 15 shown on the display with the fault icon on: Arc fault detected.

CauseArc fault detected.

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

Source:page 52

GFCI sensor fault.

Fault

Fault code 16 shown on the display with the fault icon on: GFCI sensor fault.

CauseGFCI sensor fault.

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

Source:page 52

DSP and MCU Com. Loss.

Fault

Fault code 17 shown on the display with the fault icon on: DSP and MCU Com. Loss.

CauseDSP and MCU Com. Loss.

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

Source:page 52

Warning codes (19)unit keeps running · red LED flashing

W01

Line voltage high loss.

Warning

Warning code 01 flashing on the display: Line voltage high loss.

CauseGrid voltage is too high.

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:page 51

W02

Line voltage low loss.

Warning

Warning code 02 flashing on the display: Line voltage low loss.

CauseGrid voltage is too 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:page 51

W03

Line frequency high loss.

Warning

Warning code 03 flashing on the display: Line frequency high loss.

CauseGrid frequency is too high.

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:page 51

W04

Line frequency low loss.

Warning

Warning code 04 flashing on the display: Line frequency low loss.

CauseGrid frequency is too 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:page 51

W05

Line voltage loss for long time.

Warning

Warning code 05 flashing on the display: Line voltage loss for long time.

CauseGrid voltage is higher than 253V.

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:page 51

W06

Ground Loss.

Warning

Warning code 06 flashing on the display: Ground Loss.

CauseGround wire is not detected.

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:page 51

W07

Island detect.

Warning

Warning code 07 flashing on the display: Island detect.

CauseIsland operation is detected.

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:page 51

W08

Line waveform loss.

Warning

Warning code 08 flashing on the display: Line waveform loss.

CauseThe waveform of grid is not suitable for inverter.

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:page 51

W09

Line phase loss.

Warning

Warning code 09 flashing on the display: Line phase loss.

CauseThe phase of grid is not in right sequence.

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:page 51

W10

EPO detected.

Warning

Warning code 10 flashing on the display: EPO detected.

CauseEPO is 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:page 51

W11

Overload.

Warning

Warning code 11 flashing on the display: Overload.

CauseLoad exceeds rating value.

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:page 51

W12

Over temperature.

Warning

Warning code 12 flashing on the display: Over temperature.

CauseThe temperature is too high inside.

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:page 51

W13

Batter voltage low.

Warning

Warning code 13 flashing on the display: Batter voltage low.

CauseBattery discharges to low alarm point.

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:page 51

W14

Battery under-voltage when grid is loss.

Warning

Warning code 14 flashing on the display: Battery under-voltage when grid is loss.

CauseBattery discharges to shutdown point.

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:page 51

W15

Battery open.

Warning

Warning code 15 flashing on the display: Battery open.

CauseBattery is unconnected or too 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:page 51

W16

Battery under-voltage when grid is OK.

Warning

Warning code 16 flashing on the display: Battery under-voltage when grid is OK.

CauseBattery stops discharging when the grid is OK.

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:page 51

W17

Solar over voltage.

Warning

Warning code 17 flashing on the display: Solar over voltage.

CausePV voltage is too high.

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:page 51

W18

RSD is close.

Warning

Warning code 18 flashing on the display: RSD is close.

CauseRSD is close.

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:page 51

W32

Communication lost between DSP and communication board.

Warning

Warning code 32 flashing on the display: Communication lost between DSP and communication board.

CauseCommunication lost between DSP and communication board.

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:page 51

Buy the InfiniSolar WP LV 12KW Premium

Voltronic Hybrid Solar Inverter InfiniSolar WP LV 12kw Premium

Maximum DC Voltage: 600 VDC
Start-up Voltage / Initial Feeding Voltage: 125–160 VDC
MPP Voltage Range: 120 VDC - 550 VDC
Number of MPP Trackers / Maximum Input Current: 2–18 A (MAX 30A)

Price incl. VATAED 2,339

Details

Voltronic Split-Phase Hybrid Solar Inverter InfiniSolar WP LV 12kw Premium

Phase: 120V/240V Split phase, 120V/208V Split phase
Maximum PV Input Power: 12000W
Rated Output Power: 10000VA/10000W

Price incl. VATAED 2,339

Details

Still seeing a code on your InfiniSolar WP LV 12KW Premium?

Send us the code on your screen and a Voltronic technician will reply with the exact steps for your unit. If the unit needs replacing, order it online.

Message a technician on WhatsApp Order Voltronic products or use the contact form

This is the complete fault table for the Voltronic InfiniSolar WP LV 12KW Premium Inverter — all 35 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 27 July 2026.

Keep troubleshooting

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Common questions about InfiniSolar WP LV 12KW Premium error codes

What is the difference between a fault and a warning on the InfiniSolar WP LV 12KW Premium?: A fault cuts the unit's output and the red LED stays solid — this page lists 16 of them for the InfiniSolar WP LV 12KW Premium. A warning only flashes the red LED and the unit keeps running; there are 19 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 WP LV 12KW Premium 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 InfiniSolar-WP-LV-12KW-Premium-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.