12Fault

Voltronic inverter error 12

DCDC over current

Fault — the inverter cuts its output and the red LED stays solid until the fault is cleared.

The exact meaning depends on your model:

Axpert MAX II TWIN

InverterFault

Also applies to:Axpert MAX II TWIN 8KWAxpert MAX II TWIN 11KWAxpert MAX II TWIN 12KWAxpert MAX II Duplex 8KWAxpert MAX II Duplex 11KWAxpert MAX II 8KWAxpert MAX II 11KWAxpert MAX 8K TWIN PV11K+12

What it means

DCDC over current — Fault code 12 shown on the display with the fault icon on: DCDC over current.

Cause: DCDC over current.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: Axpert-MAXII-8K-TWIN-Off-grid-manual.pdf, p.47 · Axpert-MAXII-11K-TWIN-Off-grid-manual.pdf, p.47 · Axpert-MAXII-8K-Duplex-Off-grid-manual.pdf, p.44 · +12 more official manuals

InfiniSolar V II

InverterFault

Also applies to:InfiniSolar V II 2KWInfiniSolar V II 3KWInfiniSolar V II 5KWInfiniSolar V II WP 2KWInfiniSolar V II WP 3KWInfiniSolar V II WP 5KW

What it means

Charge current over — Fault code 12 shown on the display with the fault icon on: Charge current over.

Cause: DC/DC over current or surge.

How to fix it

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

Source: InfiniSolarVII_2KW-3KW-5KW_manual.pdf, p.26 · InfiniSolarVII_2KW-3KW-5KW_manual.pdf, p.28 · InfiniSolar-VII-WP-2KW-3KW-5KW-manual-20201127.pdf, p.29 · +1 more official manuals

InfiniSolar V II 1.5KW

InverterFault

What it means

Charge Current over — Fault code 12 shown on the display with the fault icon on: Charge Current over.

Cause: DC over Current or surge.

How to fix it

Reduce PV serial amount.

Source: InfiniSolarVII_1.5KW_manual.pdf, p.27 · InfiniSolarVII_1.5KW_manual.pdf, p.29

InfiniSolar V II 6KW (Split Phase)

InverterFault

Also applies to:InfiniSolar V II 2P 6KW

What it means

Charge current is over — Fault code 12 shown on the display with the fault icon on: Charge current is over..

Cause: DC/DC over current or surge.

How to fix it

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

Source: InfiniSolar-VII-2P-6KW-manual-20201207.pdf, p.30 · InfiniSolar-VII-2P-6KW-manual-20201207.pdf, p.32

InfiniSolar WP LV 12KW Premium

InverterFault

What it means

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

Cause: GFCI fault.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: InfiniSolar-WP-LV-12KW-Premium-manual.pdf, p.52

InfiniSolar 10KW

InverterFault

Also applies to:InfiniSolar 15KWInfiniSolar Plus 5KW

What it means

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

Cause: Leakage current excceds the limit.

How to fix it

  1. Check the wire and panels which may cause the leakage
  2. If the error message still remains, please contact your installer.

Source: InfiniSolar-10KW-manual-20191126.pdf, p.51 · InfiniSolar-15K-manual-20200313.pdf, p.51 · InfiniSolar-Plus-5KW-manual.pdf, p.52

InfiniSolar E 5.5KW

InverterFault

What it means

Leakage current exceeds the allowable range — Fault code 12 shown on the display with the fault icon on: Leakage current exceeds the allowable range.

Cause: Leakage current exceeds the allowable range.

How to fix it

  1. Disconnect AC circuit breaker first.
  2. Then, disconnect DC circuit breaker.
  3. Until LCD screen completely shuts down, turn on DC breaker first.
  4. It will show "No Utility" in LCD screen.
  5. Then, turn on AC breaker.
  6. After 300 seconds, the system will automatically connect to the grid.
  7. If the error message still remains, please contact your installer.
  8. The internal temperature is higher than specified temperature.
  9. Leave inverter to cool down to room temperature.
  10. If the error message still remains, please contact your installer.
  11. Check if the open circuit voltage of PV modules is higher than 500VDC.
  12. If PV open circuit voltage is less than 500VDC and the error message remains, pelase contact your installer.
  13. Turn off the inverter.
  14. Then, restart the inverter.
  15. If the error message still remains, please contact your installer.
  16. The ground voltage is too high.
  17. Please disconnect AC breaker first and then DC breaker.
  18. Check if grounding is connected properly after LCD screen.

Source: InfiniSolarE-5.5KW-manual.pdf, p.43

InfiniSolar Super 4KW

InverterFault

What it means

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

Cause: Leakage current exceeds the limit.

How to fix it

  1. Check the wire and panels which may cause the leakage
  2. If the error message still.

Source: InfiniSolar-Super-4KW-manual.pdf, p.47

InfiniSolar 2KW/3KW

InverterFault

Also applies to:InfiniSolar 2KWInfiniSolar 3KW

What it means

Leakage current exceeds the allowable range — Fault code 12 shown on the display with the fault icon on: Leakage current exceeds the allowable range.

Cause: Leakage current exceeds the allowable range.

How to fix it

  1. The ground voltage is too high
  2. Please disconnect AC breaker first and then DC breaker. Check if grounding is connected properly after LCD screen completely shuts down
  3. If grounding is correctly connected, turn on DC brearker. After it displays "No Utility" in LCD screen, turn on AC breaker. After 300 seconds, the system will automatically connect to the grid
  4. If the error message still remains, please contact your installer.

Source: InfiniSolar-2KW3KW-manual.pdf, p.47

ESS510

Energy storage systemFault

What it means

Leakage current exceeds the allowable range — Fault code 12 shown on the display with the fault icon on: Leakage current exceeds the allowable range..

Cause: The ground voltage is too high.

How to fix it

  1. Please disconnect AC breaker first and then DC breaker.
  2. Check if grounding is connected properly after LCD screen completely shuts down.
  3. If grounding is correctly connected, turn on DC breaker.
  4. After it displays "No Utility" in LCD screen, turn on AC breaker.
  5. After 300 seconds, the system will automatically connect to the grid.
  6. If the error message still remains, please contact your installer.

Source: ESS510-manual.pdf, p.69

Galleon II 6K-10K

upsFault

Also applies to:Galleon II 6KGalleon II 10KGiant Elite 1P/1P 6K-10KWinner Pro 6KVAWinner Pro 10KVA

What it means

High Inverter voltage — Fault code 12 shown on the display; the UPS has detected a fault condition: High Inverter voltage.

Cause: High Inverter voltage.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: GalleonII-6-10K-Tower-RT-manual.pdf, p.29 · Giant-Elite-1P-1P_manual.pdf, p.26 · WinnerPro-6-10KVA_manual.pdf, p.23

Galleon III 1K-3K

upsFault

Also applies to:Galleon III 1KGalleon III 2KGalleon III 3KWinner Pro 1KVA-3KVAWinner Pro+ 1KWinner Pro+ 2KWinner Pro+ 3KOtima II 800VA-3KVA+1

What it means

Inverter voltage high — Fault code 12 shown on the display; the UPS has detected a fault condition: Inverter voltage high.

Cause: Inverter voltage high.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: Galleon-III-Tower-Rack-1-3K-manual.pdf, p.31 · Winner-Pro_manual.pdf, p.15 · WinnerProPlus-1-3K-Tower-Rack_manual.pdf, p.24 · +2 more official manuals

Galleon X9 6K-10K RT

upsFault

Also applies to:Galleon X9 6K RTGalleon X9 10K RT

What it means

Inv Volt High — Fault code 12 shown on the display; the UPS has detected a fault condition: Inv Volt High.

Cause: The internal inverter failed, so the inverter voltage is too high.

How to fix it

Contact the dealer to repair.

Source: Galleon-X9-6-10K-RT_manual.pdf, p.29

Giant Elite 3P/3P

upsFault

Also applies to:Giant Elite 3P/3P 10K-40KVA

What it means

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

Cause: INV voltage in L3 is too low.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: Giant-Elite-3P3P-manual.pdf, p.41

Frequently asked questions

What does error 12 mean on a Voltronic inverter?
It depends on the model — 35 devices use code 12. On the Axpert MAX II TWIN it means: DCDC over current. The card for each model on this page gives its exact meaning and fix.
Is error 12 a fault or a warning?
12 is a fault code: the inverter cuts its output and the red LED stays solid until it is cleared.
How do I clear or fix error 12?
Restart the unit. If the fault happens again, contact your installer or the repair centre. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the Axpert MAX II TWIN

All Axpert MAX II TWIN codes All Axpert MAX II Duplex codes All Axpert MAX II codes All Axpert MAX TWIN codes All Axpert MAX E TWIN codes All Axpert MAX E Duplex codes All Axpert MAX codes All Axpert MKS IV TWIN codes All Axpert MKS IV codes All Axpert MKS III TWIN codes All Axpert MKS II codes All Axpert WP TWIN codes All ESS-A510 codes

Other codes on the InfiniSolar V II

All InfiniSolar V II codes All InfiniSolar V II WP codes

Other codes on the InfiniSolar V II 1.5KW

All InfiniSolar V II 1.5KW codes

Other codes on the InfiniSolar V II 6KW (Split Phase)

All InfiniSolar V II 6KW (Split Phase) codes

Other codes on the InfiniSolar WP LV 12KW Premium

All InfiniSolar WP LV 12KW Premium codes

Other codes on the InfiniSolar 10KW

All InfiniSolar 10KW codes All InfiniSolar 15KW codes All InfiniSolar Plus 5KW codes

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